diff --git a/pkg/analyzer/test/src/dart/constant/evaluation_test.dart b/pkg/analyzer/test/src/dart/constant/evaluation_test.dart
index 87f7c2761aa..08d5b9ee57c 100644
--- a/pkg/analyzer/test/src/dart/constant/evaluation_test.dart
+++ b/pkg/analyzer/test/src/dart/constant/evaluation_test.dart
@@ -37,7 +37,7 @@ const a = E(42);
 const x = a as int;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 42
   variable: <testLibrary>::@topLevelVariable::x
   typeNotExtensionTypeErased: E
@@ -51,7 +51,7 @@ extension type E(int? it) {}
 const x = null as E;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Null null
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -62,7 +62,7 @@ Null null
 const x = null as Never?;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Null null
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -75,7 +75,7 @@ extension type const E(int it) {}
 const x = 42 as E;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 42
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -90,7 +90,7 @@ const b = E(3);
 const x = (a as num) * (b as num);
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 6
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -137,7 +137,7 @@ class A {
 const v = A() == .new();
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -167,7 +167,7 @@ class A {
 const v = A() == .field;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -226,7 +226,7 @@ class A {
 const A a = .field;
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -425,7 +425,7 @@ E
 const v = true == false;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -436,7 +436,7 @@ bool false
 const v = true == true;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -447,7 +447,7 @@ bool true
 const v = 1.2 == Object();
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -458,7 +458,7 @@ bool false
 const v = 1 == 2;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -469,7 +469,7 @@ bool false
 const v = 1 == 1;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -481,7 +481,7 @@ const int? a = 1;
 const v = a == null;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -492,7 +492,7 @@ bool false
 const v = 1 == Object();
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -507,7 +507,7 @@ class A {
 const v = 1 == A();
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -536,7 +536,7 @@ const v = 1 == a;
 const v = <int>[] == <int>[];
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -547,7 +547,7 @@ bool true
 const v = [1, 2] == [1, 2];
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -558,7 +558,7 @@ bool true
 const v = const <int>[] == const <num>[];
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -569,7 +569,7 @@ bool false
 const v = <String, int>{} == <String, int>{};
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -580,7 +580,7 @@ bool true
 const v = {'x': 1, 'y': 2} == {'x': 1, 'y': 2};
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -591,7 +591,7 @@ bool true
 const v = const <String, int>{} == const <String, num>{};
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -603,7 +603,7 @@ const Object? a = null;
 const v = a == Object();
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -614,7 +614,7 @@ bool false
 const v = <int>{} == <int>{};
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -625,7 +625,7 @@ bool true
 const v = {1, 2} == {1, 2};
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -636,7 +636,7 @@ bool true
 const v = const <int>{} == const <num>{};
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -647,7 +647,7 @@ bool false
 const v = 'foo' == Object();
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -665,7 +665,9 @@ const v = A() == 0;
 // [diag.constEvalPrimitiveEquality] In constant expressions, operands of the equality operator must have primitive equality.
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_equalEqual_userClass_hasHashCode() async {
@@ -680,7 +682,9 @@ const v = A() == 0;
 // [diag.constEvalPrimitiveEquality] In constant expressions, operands of the equality operator must have primitive equality.
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_equalEqual_userClass_hasPrimitiveEquality_false() async {
@@ -693,7 +697,7 @@ class A {
 const v = A(0) == 0;
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -711,7 +715,9 @@ const v = A() == 0;
 // [diag.constEvalTypeBoolNumString] In constant expressions, operands of this operator must be of type 'bool', 'num', 'String' or 'null'.
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_equalEqual_userClass_hasPrimitiveEquality_true() async {
@@ -724,7 +730,7 @@ class A {
 const v = A(0) == A(0);
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::v
 ''');
@@ -1138,7 +1144,7 @@ class C<T> {
 const x = C<E>();
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 C<int>
   constructorInvocation
     constructor: ConstructorMember
@@ -1161,7 +1167,7 @@ class C<T> {
 const x = C(E(42));
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 C<int>
   f: int 42
     typeNotExtensionTypeErased: E
@@ -1184,7 +1190,7 @@ extension type const E(int it) {}
 const x = E(42);
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 42
   variable: <testLibrary>::@topLevelVariable::x
   typeNotExtensionTypeErased: E
@@ -1199,7 +1205,7 @@ const a = E(42);
 const x = a is String;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -1213,7 +1219,7 @@ const a = E(42);
 const x = a is int;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -1226,7 +1232,7 @@ extension type const E(String it) {}
 const x = 42 is E;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -1239,7 +1245,7 @@ extension type const E(int it) {}
 const x = 42 is E;
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 bool true
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -1252,7 +1258,7 @@ extension type const E(int it) {}
 const x = <E>[];
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   variable: <testLibrary>::@topLevelVariable::x
   typeNotExtensionTypeErased: List<E>
@@ -1266,7 +1272,7 @@ extension type const E(int it) {}
 const x = [E(0), E(1)];
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 0
@@ -1285,7 +1291,7 @@ extension type const E(int it) {}
 const x = {E(0): E(1)};
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<int, int>
   entries
     entry
@@ -1325,7 +1331,7 @@ class C {
 const c = C(x: 123, y: 456);
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 C
   _x: int 123
   _y: int 456
@@ -1344,7 +1350,7 @@ const dynamic d = 'foo';
 const int? c = d?.length;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 3
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -1356,7 +1362,7 @@ const dynamic d = null;
 const int? c = d?.length;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Null null
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -1368,7 +1374,7 @@ const List? l = null;
 const int? c = l?.length;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Null null
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -1380,7 +1386,7 @@ const String? s = 'foo';
 const int? c = s?.length;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 3
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -1392,7 +1398,7 @@ const String? s = null;
 const int? c = s?.length;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Null null
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -1423,7 +1429,9 @@ class A<X> {
 }
 ''');
     var result = _localVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitBinaryExpression_extensionMethod() async {
@@ -1438,7 +1446,9 @@ const v2 = v1 + v1;
 // [diag.constEvalExtensionMethod] Extension methods can't be used in constant expressions.
 ''');
     var result = _topLevelVar(unitResult, 'v2');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitBinaryExpression_extensionType() async {
@@ -1453,7 +1463,9 @@ const v2 = v1 + 2;
 // [diag.constEvalExtensionTypeMethod] Extension type methods can't be used in constant expressions.
 ''');
     var result = _topLevelVar(unitResult, 'v2');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitBinaryExpression_extensionType_implementsInt() async {
@@ -1533,7 +1545,9 @@ const c = 0xFFFFFFFF >>> -2;
 // [diag.constEvalThrowsException] Evaluation of this constant expression throws an exception.
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitBinaryExpression_gtGtGt_negative_zeroBits() async {
@@ -1589,7 +1603,9 @@ const c = 0xFF >>> -2;
 // [diag.constEvalThrowsException] Evaluation of this constant expression throws an exception.
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitBinaryExpression_gtGtGt_positive_zeroBits() async {
@@ -1670,7 +1686,7 @@ const bool b = false;
 const void Function(int p) h = b ? g : g;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int, {int? q})
   element: <testLibrary>::@function::f
   typeArguments
@@ -1706,7 +1722,9 @@ class A {
 }
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitConditionalExpression_unknownCondition_undefinedIdentifier() async {
@@ -1720,7 +1738,9 @@ const x = kIsWeb ? a : b;
 // [diag.undefinedIdentifier] Undefined name 'b'.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitConstructorDeclaration_cycle() async {
@@ -2210,7 +2230,9 @@ const g = foo<true>;
 // [diag.missingIdentifier] Expected an identifier.
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitFunctionReference_explicitTypeArgs_functionName_tooFew() async {
@@ -2221,7 +2243,9 @@ const g = foo<int>;
 // [diag.wrongNumberOfTypeArgumentsElement] The function 'foo' is declared with 2 type parameters, but 1 type arguments are given.
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitFunctionReference_explicitTypeArgs_functionName_tooMany() async {
@@ -2232,7 +2256,9 @@ const g = foo<int, String>;
 // [diag.wrongNumberOfTypeArgumentsElement] The function 'foo' is declared with 1 type parameters, but 2 type arguments are given.
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitFunctionReference_explicitTypeArgs_functionName_typeParameter() async {
@@ -2828,7 +2854,9 @@ const x = [for (int i = 0; i < 3; i++) i];
 // [diag.constEvalForElement] Constant expressions don't support 'for' elements.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitListLiteral_ifElement_nonBoolCondition() async {
@@ -2839,7 +2867,9 @@ const x = [1, if (c) 2 else 3, 4];
 // [diag.nonBoolCondition] Conditions must have a static type of 'bool'.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitListLiteral_ifElement_nonBoolCondition_static() async {
@@ -2849,7 +2879,9 @@ const x = [1, if (1) 2 else 3, 4];
 // [diag.nonBoolCondition] Conditions must have a static type of 'bool'.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitListLiteral_listElement_explicitType() async {
@@ -2942,7 +2974,9 @@ const x = <int>[...a];
 // [diag.constSpreadExpectedListOrSet] A list or a set is expected in this spread.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitListLiteral_spreadElement_null() async {
@@ -2954,7 +2988,7 @@ const List<String> x = [
 ];
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<String>
   elements
     String anotherString
@@ -2971,7 +3005,7 @@ const List<String> x = [
 ];
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<String>
   elements
     String anotherString
@@ -3018,7 +3052,7 @@ void f(int a) {}
 const g = self.f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   variable: <testLibrary>::@topLevelVariable::g
@@ -3032,7 +3066,7 @@ void f<T>(T a) {}
 const void Function(int) g = self.f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   typeArguments
@@ -3050,7 +3084,7 @@ const g2 = f;
 const void Function(int) h = b ? g1 : g2;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   typeArguments
@@ -3067,7 +3101,7 @@ const g = f;
 const void Function(int) h = self.g;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   typeArguments
@@ -3084,7 +3118,7 @@ const g = f;
 const h = self.g;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function<T>(T)
   element: <testLibrary>::@function::f
   variable: <testLibrary>::@topLevelVariable::h
@@ -3112,7 +3146,7 @@ class RequiresNonEmptyList {
 const c = ~42;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int -43
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -3130,7 +3164,9 @@ const v2 = -v1;
 // [diag.constEvalExtensionMethod] Extension methods can't be used in constant expressions.
 ''');
     var result = _topLevelVar(unitResult, 'v2');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitPrefixExpression_extensionType() async {
@@ -3145,7 +3181,9 @@ const v2 = -v1;
 // [diag.constEvalExtensionTypeMethod] Extension type methods can't be used in constant expressions.
 ''');
     var result = _topLevelVar(unitResult, 'v2');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitPrefixExpression_extensionType_implementsInt() async {
@@ -3236,7 +3274,7 @@ class C {
 const g = self.C.f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@class::C::@method::f
   variable: <testLibrary>::@topLevelVariable::g
@@ -3252,7 +3290,7 @@ class C {
 const void Function(int) g = self.C.f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@class::C::@method::f
   typeArguments
@@ -3270,7 +3308,7 @@ extension E on int {
 const g = self.E.f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int Function(String)
   element: <testLibrary>::@extension::E::@method::f
   variable: <testLibrary>::@topLevelVariable::g
@@ -3286,7 +3324,7 @@ extension type ET(int it) {
 const g = self.ET.f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int Function(String)
   element: <testLibrary>::@extensionType::ET::@method::f
   variable: <testLibrary>::@topLevelVariable::g
@@ -3482,7 +3520,9 @@ const x = {1: null, for (final i in const []) i: null};
 // [diag.constEvalForElement] Constant expressions don't support 'for' elements.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitSetOrMapLiteral_map_forElement_nested() async {
@@ -3494,7 +3534,9 @@ const x = {1: null, if (true) for (final i in const []) i: null};
 // [diag.constEvalForElement] Constant expressions don't support 'for' elements.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitSetOrMapLiteral_map_ifElement_nonBoolCondition() async {
@@ -3505,7 +3547,9 @@ const c = const {if (nonBool) 'a' : 1};
 // [diag.nonBoolCondition] Conditions must have a static type of 'bool'.
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitSetOrMapLiteral_map_mapElement() async {
@@ -3513,7 +3557,7 @@ const c = const {if (nonBool) 'a' : 1};
 const x = {'a' : 'm', 'b' : 'n', 'c' : 'o'};
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, String>
   entries
     entry
@@ -3538,7 +3582,7 @@ const Map<String, int> alwaysInclude = {
 };
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -3570,7 +3614,7 @@ const Map<String, int> x = {
 };
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -3593,7 +3637,7 @@ const cm0 = C(-0.0);
 const a = {cp0, cm0};
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<C>
   elements
     C
@@ -3624,7 +3668,9 @@ const x = {for (final i in set) i};
 // [diag.constEvalForElement] Constant expressions don't support 'for' elements.
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitSetOrMapLiteral_set_ifElement_nonBoolCondition() async {
@@ -3635,7 +3681,9 @@ const c = const {if (nonBool) 3};
 // [diag.nonBoolCondition] Conditions must have a static type of 'bool'.
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitSetOrMapLiteral_set_spread_list() async {
@@ -3647,7 +3695,7 @@ const Set<String> x = {
 };
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<String>
   elements
     String anotherString
@@ -3665,7 +3713,7 @@ const Set<String> x = {
 };
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<String>
   elements
     String anotherString
@@ -3679,7 +3727,7 @@ const a = C;
 class C {}
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Type
   toTypeValue: C
   toTypeValueNotExtensionTypeErased: C
@@ -3693,7 +3741,7 @@ const a = E;
 extension type E(int it);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Type
   toTypeValue: int
   toTypeValueNotExtensionTypeErased: E
@@ -3707,7 +3755,7 @@ const a = E(0);
 extension type const E(int it);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 0
   variable: <testLibrary>::@topLevelVariable::a
   typeNotExtensionTypeErased: E
@@ -3720,7 +3768,7 @@ void f(int a) {}
 const g = f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   variable: <testLibrary>::@topLevelVariable::g
@@ -3733,7 +3781,7 @@ void f<T>(T a) {}
 const void Function(int) g = f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   typeArguments
@@ -3748,7 +3796,7 @@ void f(int a) {}
 const void Function(int) g = f;
 ''');
     var result = _topLevelVar(unitResult, 'g');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   variable: <testLibrary>::@topLevelVariable::g
@@ -3762,7 +3810,7 @@ const g = f;
 const void Function(int) h = g;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int)
   element: <testLibrary>::@function::f
   typeArguments
@@ -3778,7 +3826,7 @@ const g = f;
 const h = g;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function<T>(T)
   element: <testLibrary>::@function::f
   variable: <testLibrary>::@topLevelVariable::h
@@ -3795,7 +3843,7 @@ class C {
 }
 ''');
     var result = _field(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int, {int? b})
   element: <testLibrary>::@function::f
   typeArguments
@@ -3816,7 +3864,7 @@ class C {
 const c = C(f);
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 C
   h: void Function(int, {int? b})
     element: <testLibrary>::@function::f
@@ -3840,7 +3888,7 @@ const void Function<T>(T a) g = f;
 const void Function(int a) h = g;
 ''');
     var result = _topLevelVar(unitResult, 'h');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 void Function(int, {int? b})
   element: <testLibrary>::@function::f
   typeArguments
@@ -3861,7 +3909,9 @@ const v2 = -v1;
 // [diag.constEvalExtensionTypeMethod] Extension type methods can't be used in constant expressions.
 ''');
     var result = _topLevelVar(unitResult, 'v2');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   void _assertHasPrimitiveEqualityFalse(
@@ -3892,7 +3942,7 @@ mixin ConstantVisitorTestCases on ConstantVisitorTestSupport {
 const c = [1, if (1 < 0) 2 else 3, 4];
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 1
@@ -3906,7 +3956,7 @@ List<int>
 const c = [1, if (1 < 0) 2, 3];
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 1
@@ -3919,7 +3969,7 @@ List<int>
 const c = [1, if (1 > 0) 2 else 3, 4];
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 1
@@ -3933,7 +3983,7 @@ List<int>
 const c = [1, if (1 > 0) 2, 3];
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 1
@@ -3947,7 +3997,7 @@ List<int>
 const c = [1, if (1 > 0) if (2 > 1) 2, 3];
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 1
@@ -3961,7 +4011,7 @@ List<int>
 const c = [1, ...[2, 3], 4];
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 List<int>
   elements
     int 1
@@ -3976,7 +4026,7 @@ List<int>
 const c = {'a' : 1, if (1 < 0) 'b' : 2 else 'c' : 3, 'd' : 4};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -3996,7 +4046,7 @@ Map<String, int>
 const c = {'a' : 1, if (1 < 0) 'b' : 2, 'c' : 3};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -4013,7 +4063,7 @@ Map<String, int>
 const c = {'a' : 1, if (1 > 0) 'b' : 2 else 'c' : 3, 'd' : 4};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -4033,7 +4083,7 @@ Map<String, int>
 const c = {'a' : 1, if (1 > 0) 'b' : 2, 'c' : 3};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -4053,7 +4103,7 @@ Map<String, int>
 const c = {'a' : 1, if (1 > 0) if (2 > 1) ...{'b' : 2}, 'c' : 3};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -4073,7 +4123,7 @@ Map<String, int>
 const c = {'a' : 1, ...{'b' : 2, 'c' : 3}, 'd' : 4};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Map<String, int>
   entries
     entry
@@ -4096,7 +4146,7 @@ Map<String, int>
 const c = {1, if (1 < 0) 2 else 3, 4};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<int>
   elements
     int 1
@@ -4110,7 +4160,7 @@ Set<int>
 const c = {1, if (1 < 0) 2, 3};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<int>
   elements
     int 1
@@ -4123,7 +4173,7 @@ Set<int>
 const c = {1, if (1 > 0) 2 else 3, 4};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<int>
   elements
     int 1
@@ -4137,7 +4187,7 @@ Set<int>
 const c = {1, if (1 > 0) 2, 3};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<int>
   elements
     int 1
@@ -4151,7 +4201,7 @@ Set<int>
 const c = {1, if (1 > 0) if (2 > 1) 2, 3};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<int>
   elements
     int 1
@@ -4165,7 +4215,7 @@ Set<int>
 const c = {1, ...{2, 3}, 4};
 ''');
     var result = _evaluateConstant(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Set<int>
   elements
     int 1
@@ -4180,7 +4230,7 @@ Set<int>
 const c = 'abc' 'def';
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 String abcdef
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -4196,8 +4246,22 @@ class A {
   const A();
 }
 ''');
-    DartObjectImpl resultA = _evaluateConstant(result, 'a');
-    DartObjectImpl resultB = _evaluateConstant(result, 'b');
+
+    var resultA = _evaluateConstant(result, 'a');
+    assertDartObjectText(resultA, r'''
+A
+  constructorInvocation
+    constructor: <testLibrary>::@class::A::@constructor::new
+''');
+
+    var resultB = _evaluateConstant(result, 'b');
+    assertDartObjectText(resultB, r'''
+A
+  constructorInvocation
+    constructor: <testLibrary>::@class::A::@constructor::new
+  variable: <testLibrary>::@topLevelVariable::a
+''');
+
     expect(resultB, resultA);
   }
 
@@ -4212,8 +4276,28 @@ class B extends A {
   const B();
 }
 ''');
-    DartObjectImpl resultA = _evaluateConstant(result, 'a');
-    DartObjectImpl resultB = _evaluateConstant(result, 'b');
+
+    var resultA = _evaluateConstant(result, 'a');
+    assertDartObjectText(resultA, r'''
+B
+  (super): A
+    constructorInvocation
+      constructor: <testLibrary>::@class::A::@constructor::new
+  constructorInvocation
+    constructor: <testLibrary>::@class::B::@constructor::new
+''');
+
+    var resultB = _evaluateConstant(result, 'b');
+    assertDartObjectText(resultB, r'''
+B
+  (super): A
+    constructorInvocation
+      constructor: <testLibrary>::@class::A::@constructor::new
+  constructorInvocation
+    constructor: <testLibrary>::@class::B::@constructor::new
+  variable: <testLibrary>::@topLevelVariable::a
+''');
+
     expect(resultB, resultA);
   }
 
@@ -4231,7 +4315,9 @@ class B extends A {
 }
 ''');
     var result = _topLevelVar(unitResult, 'b');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitAsExpression_instanceOfUnrelatedClass() async {
@@ -4248,7 +4334,9 @@ class B {
 }
 ''');
     var result = _topLevelVar(unitResult, 'b');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitAsExpression_potentialConst() async {
@@ -4356,8 +4444,10 @@ const c = a && true;
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = false & true;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_and_bool_known_unknown() async {
@@ -4365,8 +4455,10 @@ const c = false & true;
 const b = bool.fromEnvironment('y');
 const c = false & b;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_and_bool_true_invalid() async {
@@ -4383,8 +4475,10 @@ const c = true && a;
 const a = bool.fromEnvironment('x');
 const c = a & true;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_and_bool_unknown_unknown() async {
@@ -4393,8 +4487,10 @@ const a = bool.fromEnvironment('x');
 const b = bool.fromEnvironment('y');
 const c = a & b;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_and_int() async {
@@ -4596,8 +4692,10 @@ const c = a || true;
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = false | true;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool true
+''');
   }
 
   test_visitBinaryExpression_or_bool_known_unknown() async {
@@ -4605,8 +4703,10 @@ const c = false | true;
 const b = bool.fromEnvironment('y');
 const c = false | b;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_or_bool_true_invalid() async {
@@ -4625,8 +4725,10 @@ const c = true || a;
 const a = bool.fromEnvironment('x');
 const c = a | true;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool true
+''');
   }
 
   test_visitBinaryExpression_or_bool_unknown_unknown() async {
@@ -4635,16 +4737,20 @@ const a = bool.fromEnvironment('x');
 const b = bool.fromEnvironment('y');
 const c = a | b;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_or_int() async {
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = 3 | 5;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.intType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+int 7
+''');
   }
 
   test_visitBinaryExpression_or_known_known() async {
@@ -4678,9 +4784,10 @@ const c = 'a' ?? 'b';
 //               ^^^
 // [diag.deadNullAwareExpression] The left operand can't be null, so the right operand is never executed.
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.stringType);
-    expect(result.toStringValue(), 'a');
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+String a
+''');
   }
 
   test_visitBinaryExpression_questionQuestion_null_invalid() async {
@@ -4696,25 +4803,30 @@ class C {}
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = null ?? 'b';
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.stringType);
-    expect(result.toStringValue(), 'b');
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+String b
+''');
   }
 
   test_visitBinaryExpression_questionQuestion_null_null() async {
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = null ?? null;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.isNull, isTrue);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+Null null
+''');
   }
 
   test_visitBinaryExpression_xor_bool_known_known() async {
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = false ^ true;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool true
+''');
   }
 
   test_visitBinaryExpression_xor_bool_known_unknown() async {
@@ -4722,8 +4834,10 @@ const c = false ^ true;
 const b = bool.fromEnvironment('y');
 const c = false ^ b;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_xor_bool_unknown_known() async {
@@ -4731,8 +4845,10 @@ const c = false ^ b;
 const a = bool.fromEnvironment('x');
 const c = a ^ true;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool true
+''');
   }
 
   test_visitBinaryExpression_xor_bool_unknown_unknown() async {
@@ -4741,16 +4857,20 @@ const a = bool.fromEnvironment('x');
 const b = bool.fromEnvironment('y');
 const c = a ^ b;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.boolType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+bool false
+''');
   }
 
   test_visitBinaryExpression_xor_int() async {
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const c = 3 ^ 5;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'c');
-    expect(result.type, unitResult.typeProvider.intType);
+    var result = _evaluateConstant(unitResult, 'c');
+    assertDartObjectText(result, r'''
+int 6
+''');
   }
 
   test_visitBinaryExpression_xor_mixed() async {
@@ -4945,9 +5065,10 @@ double 3.45
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const double d = 3;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'd');
-    expect(result.type, unitResult.typeProvider.doubleType);
-    expect(result.toDoubleValue(), 3.0);
+    var result = _evaluateConstant(unitResult, 'd');
+    assertDartObjectText(result, r'''
+double 3.0
+''');
   }
 
   test_visitIntegerLiteral_integer() async {
@@ -5091,7 +5212,7 @@ bool true
 const c = null;
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 Null null
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -5122,7 +5243,7 @@ const x = prefix.E.v;
 ''');
 
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 42
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -5159,7 +5280,9 @@ const v2 = v1.length;
 // [diag.constEvalExtensionTypeMethod] Extension type methods can't be used in constant expressions.
 ''');
     var result = _topLevelVar(unitResult, 'v2');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_visitPropertyAccess_length_extensionType_implementsString() async {
@@ -5198,9 +5321,12 @@ const y = B(x);
     var unitResult = await resolveTestCodeWithDiagnostics('''
 const a = dynamic;
 ''');
-    DartObjectImpl result = _evaluateConstant(unitResult, 'a');
-    expect(result.type, unitResult.typeProvider.typeType);
-    expect(result.toTypeValue(), unitResult.typeProvider.dynamicType);
+    var result = _evaluateConstant(unitResult, 'a');
+    assertDartObjectText(result, r'''
+Type
+  toTypeValue: dynamic
+  toTypeValueNotExtensionTypeErased: dynamic
+''');
   }
 
   test_visitSimpleIdentifier_variable() async {
@@ -5209,7 +5335,7 @@ const a = 42;
 const b = a;
 ''');
     var result = _topLevelVar(unitResult, 'b');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 int 42
   variable: <testLibrary>::@topLevelVariable::b
 ''');
@@ -5252,7 +5378,7 @@ int 3
 const c = 'abc';
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 String abc
   variable: <testLibrary>::@topLevelVariable::c
 ''');
@@ -5281,10 +5407,6 @@ String a3c
 }
 
 class ConstantVisitorTestSupport extends PubPackageResolutionTest {
-  void _assertNull(DartObjectImpl? result) {
-    expect(result, isNull);
-  }
-
   DartObjectImpl _evaluateConstant(
     TestResolvedUnitResult unitResult,
     String name, {
@@ -5412,7 +5534,7 @@ class A {
 const a = const A();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -5435,7 +5557,7 @@ const a = A(x: 0);
 // [diag.constEvalThrowsException][context 1] Evaluation of this constant expression throws an exception.
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 <null>
 ''');
   }
@@ -5454,7 +5576,7 @@ class A {
 const a = A(x: 1, y: 2);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   _x: int 1
   _y: int 2
@@ -5478,7 +5600,7 @@ class A {
 const a = A(x: 1);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   _x: int 1
   constructorInvocation
@@ -5512,7 +5634,7 @@ class A {
 const c = const A(E.b);
 ''');
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -5558,7 +5680,7 @@ class A {
 const a = const A(0);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -5589,7 +5711,7 @@ class A {
 const v = const A(0);
 ''');
     var result = _topLevelVar(unitResult, 'v');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -5622,7 +5744,7 @@ class A {
 const a = const A();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -5661,7 +5783,7 @@ class B extends A {
 const b = const B();
 ''');
     var result = _topLevelVar(unitResult, 'b');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 B
   (super): A
     constructorInvocation
@@ -5724,7 +5846,7 @@ class A {
 const a = const A(1);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -5739,13 +5861,13 @@ A
 const a = bool.fromEnvironment('a');
 const b = bool.fromEnvironment('b', defaultValue: true);
 ''');
-    assertDartObjectText(_topLevelVar(result, 'a'), '''
+    assertDartObjectText(_topLevelVar(result, 'a'), r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::a
 ''');
     assertDartObjectText(
       _evaluateConstant(result, 'a', declaredVariables: {'a': 'true'}),
-      '''
+      r'''
 bool true
 ''',
     );
@@ -5755,7 +5877,7 @@ bool true
       'b',
       declaredVariables: {'b': 'bbb'},
     );
-    assertDartObjectText(bResult, '''
+    assertDartObjectText(bResult, r'''
 bool true
 ''');
   }
@@ -5766,7 +5888,7 @@ bool true
 const a = bool.fromEnvironment('dart.library.js_interop');
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::a
 ''');
@@ -5778,7 +5900,7 @@ const a = bool.fromEnvironment('dart.library.js_interop');
 const a = bool.fromEnvironment('dart.library.js_util');
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::a
 ''');
@@ -5792,12 +5914,12 @@ const left = [3, 1, 2, 4] == b;
 const right = b == [3, 1, 2, 4];
 ''');
     var leftResult = _topLevelVar(result, 'left');
-    assertDartObjectText(leftResult, '''
+    assertDartObjectText(leftResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::left
 ''');
     var rightResult = _topLevelVar(result, 'right');
-    assertDartObjectText(rightResult, '''
+    assertDartObjectText(rightResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::right
 ''');
@@ -5811,12 +5933,12 @@ const left = [3, if (a) ...[1] else ...[1, 2], 4] == b;
 const right = b == [3, if (a) ...[1] else ...[1, 2], 4];
 ''');
     var leftResult = _topLevelVar(result, 'left');
-    assertDartObjectText(leftResult, '''
+    assertDartObjectText(leftResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::left
 ''');
     var rightResult = _topLevelVar(result, 'right');
-    assertDartObjectText(rightResult, '''
+    assertDartObjectText(rightResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::right
 ''');
@@ -5828,7 +5950,7 @@ const a = bool.fromEnvironment('dart.library.js_util');
 const x = {3:'3', if (a) 1:'1' else 2:'2', 4:'4'};
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 <unknown> Map<int, String>
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -5842,12 +5964,12 @@ const left = {3:'3', 2:'2', 4:'4'} == b;
 const right = b == {3:'3', 2:'2', 4:'4'};
 ''');
     var leftResult = _topLevelVar(result, 'left');
-    assertDartObjectText(leftResult, '''
+    assertDartObjectText(leftResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::left
 ''');
     var rightResult = _topLevelVar(result, 'right');
-    assertDartObjectText(rightResult, '''
+    assertDartObjectText(rightResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::right
 ''');
@@ -5861,12 +5983,12 @@ const left = {3:'3', if (a) 1:'1' else 2:'2', 4:'4'} == b;
 const right = b == {3:'3', if (a) 1:'1' else 2:'2', 4:'4'};
 ''');
     var leftResult = _topLevelVar(result, 'left');
-    assertDartObjectText(leftResult, '''
+    assertDartObjectText(leftResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::left
 ''');
     var rightResult = _topLevelVar(result, 'right');
-    assertDartObjectText(rightResult, '''
+    assertDartObjectText(rightResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::right
 ''');
@@ -5892,7 +6014,7 @@ const a = bool.fromEnvironment('dart.library.js_util');
 const x = {3, if (a) ...[1] else ...[1, 2], 4};
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 <unknown> Set<int>
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -5906,12 +6028,12 @@ const left = {3, 1, 4} == b;
 const right = b == {3, 1, 4};
 ''');
     var leftResult = _topLevelVar(result, 'left');
-    assertDartObjectText(leftResult, '''
+    assertDartObjectText(leftResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::left
 ''');
     var rightResult = _topLevelVar(result, 'right');
-    assertDartObjectText(rightResult, '''
+    assertDartObjectText(rightResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::right
 ''');
@@ -5925,12 +6047,12 @@ const left = {3, if (a) ...[1] else ...[1, 2], 4} == b;
 const right = b == {3, if (a) ...[1] else ...[1, 2], 4};
 ''');
     var leftResult = _topLevelVar(result, 'left');
-    assertDartObjectText(leftResult, '''
+    assertDartObjectText(leftResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::left
 ''');
     var rightResult = _topLevelVar(result, 'right');
-    assertDartObjectText(rightResult, '''
+    assertDartObjectText(rightResult, r'''
 <unknown> bool
   variable: <testLibrary>::@topLevelVariable::right
 ''');
@@ -5956,7 +6078,7 @@ const a = bool.fromEnvironment('dart.library.js_util');
 const x = [3, if (a) ...[1] else ...[1, 2], 4];
 ''');
     var result = _topLevelVar(unitResult, 'x');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 <unknown> List<int>
   variable: <testLibrary>::@topLevelVariable::x
 ''');
@@ -5980,13 +6102,13 @@ class A {
     var result = await resolveTestCodeWithDiagnostics('''
 const a = bool.hasEnvironment('a');
 ''');
-    assertDartObjectText(_topLevelVar(result, 'a'), '''
+    assertDartObjectText(_topLevelVar(result, 'a'), r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::a
 ''');
     assertDartObjectText(
       _evaluateConstant(result, 'a', declaredVariables: {'a': '42'}),
-      '''
+      r'''
 bool true
 ''',
     );
@@ -6931,7 +7053,7 @@ class A {
 const A a = .new();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -6962,7 +7084,7 @@ class A {
 const A a = .new(.b);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -7006,13 +7128,13 @@ B
 const bool a = .fromEnvironment('a');
 const bool b = .fromEnvironment('b', defaultValue: true);
 ''');
-    assertDartObjectText(_topLevelVar(result, 'a'), '''
+    assertDartObjectText(_topLevelVar(result, 'a'), r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::a
 ''');
     assertDartObjectText(
       _evaluateConstant(result, 'a', declaredVariables: {'a': 'true'}),
-      '''
+      r'''
 bool true
 ''',
     );
@@ -7022,7 +7144,7 @@ bool true
       'b',
       declaredVariables: {'b': 'bbb'},
     );
-    assertDartObjectText(bResult, '''
+    assertDartObjectText(bResult, r'''
 bool true
 ''');
   }
@@ -7031,13 +7153,13 @@ bool true
     var result = await resolveTestCodeWithDiagnostics('''
 const bool a = .hasEnvironment('a');
 ''');
-    assertDartObjectText(_topLevelVar(result, 'a'), '''
+    assertDartObjectText(_topLevelVar(result, 'a'), r'''
 bool false
   variable: <testLibrary>::@topLevelVariable::a
 ''');
     assertDartObjectText(
       _evaluateConstant(result, 'a', declaredVariables: {'a': '42'}),
-      '''
+      r'''
 bool true
 ''',
     );
@@ -7053,7 +7175,7 @@ extension type const B(A a) {}
 const B b = .new(A());
 ''');
     var result = _topLevelVar(unitResult, 'b');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   constructorInvocation
     constructor: <testLibrary>::@class::A::@constructor::new
@@ -7075,7 +7197,7 @@ const C c = .new();
 ''');
 
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 C
   one: int 1
   constructorInvocation
@@ -7097,7 +7219,7 @@ const C c = .new(1);
 ''');
 
     var result = _topLevelVar(unitResult, 'c');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 C
   one: int 1
   constructorInvocation
@@ -7360,7 +7482,7 @@ class A<T> {
 const a = const A<int>();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A<int>
   f: void Function(int)
     element: <testLibrary>::@function::g
@@ -7383,7 +7505,7 @@ class A<T> {
 const a = const A<int>();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A<int>
   f: Type
     toTypeValue: int
@@ -7405,7 +7527,7 @@ class A<T> {
 const a = const A();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A<dynamic>
   f: Type
     toTypeValue: dynamic
@@ -7428,7 +7550,7 @@ typedef B<S> = A<int, S>;
 const a = const B<String>();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A<int, String>
   f: Type
     toTypeValue: int
@@ -7459,7 +7581,9 @@ const a = const A<int>();
 // [diag.constTypeParameter][context 1] Type parameters can't be used in a constant expression.
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    _assertNull(result);
+    assertDartObjectText(result, r'''
+<null>
+''');
   }
 
   test_fieldInitializer_visitAsExpression_potentialConstType() async {
@@ -7483,13 +7607,13 @@ const a = int.fromEnvironment('a');
 const b = int.fromEnvironment('b', defaultValue: 42);
 ''');
 
-    assertDartObjectText(_topLevelVar(result, 'a'), '''
+    assertDartObjectText(_topLevelVar(result, 'a'), r'''
 int 0
   variable: <testLibrary>::@topLevelVariable::a
 ''');
     assertDartObjectText(
       _evaluateConstant(result, 'a', declaredVariables: {'a': '5'}),
-      '''
+      r'''
 int 5
 ''',
     );
@@ -7499,7 +7623,7 @@ int 5
       'b',
       declaredVariables: {'b': 'bbb'},
     );
-    assertDartObjectText(bResult, '''
+    assertDartObjectText(bResult, r'''
 int 42
 ''');
   }
@@ -7577,7 +7701,7 @@ class A<T> {
 const a = const A<int>();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A<int>
   f: Type
     toTypeValue: int
@@ -7625,13 +7749,13 @@ C<int>
     var result = await resolveTestCodeWithDiagnostics('''
 const a = String.fromEnvironment('a');
 ''');
-    assertDartObjectText(_topLevelVar(result, 'a'), '''
+    assertDartObjectText(_topLevelVar(result, 'a'), r'''
 String <empty>
   variable: <testLibrary>::@topLevelVariable::a
 ''');
     assertDartObjectText(
       _evaluateConstant(result, 'a', declaredVariables: {'a': 'test'}),
-      '''
+      r'''
 String test
 ''',
     );
@@ -8034,7 +8158,7 @@ class B<T> extends A<T> {
 const a = const B<int>();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 B<int>
   (super): A<int>
     f: Type
@@ -8068,7 +8192,7 @@ class B<T> extends A {
 const a = const B<int>();
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 B<int>
   (super): A
     f: Type
@@ -8098,7 +8222,7 @@ class A {
 const a = const A(1);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 A
   _: int 1
   constructorInvocation
@@ -8135,7 +8259,7 @@ class B extends A {
 const a = const B(1);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 B
   (super): A
     _: int 1
@@ -8166,7 +8290,7 @@ class B extends A {
 const a = const B(10);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 B
   (super): A
     _: int 10
@@ -8198,7 +8322,7 @@ class B extends A {
 const a = const B(1, 2);
 ''');
     var result = _topLevelVar(unitResult, 'a');
-    assertDartObjectText(result, '''
+    assertDartObjectText(result, r'''
 B
   (super): A
     _: int 1
diff --git a/pkg/analyzer/test/src/dart/resolution/constant_test.dart b/pkg/analyzer/test/src/dart/resolution/constant_test.dart
index 828bbc18615..d4592b45a40 100644
--- a/pkg/analyzer/test/src/dart/resolution/constant_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/constant_test.dart
@@ -2,8 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/src/dart/constant/value.dart';
-import 'package:analyzer/src/dart/element/element.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -41,7 +39,9 @@ const a = const A();
     // To evaluate `const A()` we have to evaluate `{int p}`.
     // Even if its value is `null`.
     expect(p.isConstantEvaluated, isTrue);
-    expect(p.computeConstantValue()!.isNull, isTrue);
+    assertDartObjectText(p.computeConstantValue(), r'''
+Null null
+''');
   }
 
   test_constFactoryRedirection_super() async {
@@ -66,7 +66,19 @@ main() {}
 
     var node = result.findNode.annotation('@I');
     var value = node.elementAnnotation!.computeConstantValue()!;
-    expect(value.getField('(super)')!.getField('f')!.toIntValue(), 42);
+    assertDartObjectText(value, r'''
+B
+  (super): A
+    f: int 42
+    constructorInvocation
+      constructor: <testLibrary>::@class::A::@constructor::new
+      positionalArguments
+        0: int 42
+  constructorInvocation
+    constructor: <testLibrary>::@class::I::@constructor::new
+    positionalArguments
+      0: int 42
+''');
   }
 
   test_constList_withNullAwareElement() async {
@@ -212,7 +224,10 @@ import 'a.dart';
 
     var import_ = result.findElement.importFind('package:test/a.dart');
     var a = import_.topVar('a');
-    expect(a.computeConstantValue()!.toIntValue(), 42);
+    assertDartObjectText(a.computeConstantValue(), r'''
+int 42
+  variable: package:test/a.dart::@topLevelVariable::a
+''');
   }
 
   test_imported_prefixedIdentifier_staticField_extension() async {
@@ -231,7 +246,10 @@ import 'a.dart';
 
     var import_ = result.findElement.importFind('package:test/a.dart');
     var a = import_.topVar('a');
-    expect(a.computeConstantValue()!.toIntValue(), 42);
+    assertDartObjectText(a.computeConstantValue(), r'''
+int 42
+  variable: package:test/a.dart::@topLevelVariable::a
+''');
   }
 
   test_imported_prefixedIdentifier_staticField_mixin() async {
@@ -252,7 +270,10 @@ import 'a.dart';
 
     var import_ = result.findElement.importFind('package:test/a.dart');
     var a = import_.topVar('a');
-    expect(a.computeConstantValue()!.toIntValue(), 42);
+    assertDartObjectText(a.computeConstantValue(), r'''
+int 42
+  variable: package:test/a.dart::@topLevelVariable::a
+''');
   }
 
   test_imported_super_defaultFieldFormalParameter() async {
@@ -281,10 +302,18 @@ class B extends A {
     });
     var aResult = results[a]!;
 
-    var bElement = aResult.findElement.field('b') as FieldElementImpl;
-    var bValue = bElement.evaluationResult as DartObjectImpl;
-    var superFields = bValue.getField(GenericState.SUPERCLASS_FIELD);
-    expect(superFields!.getField('f1')!.toBoolValue(), false);
+    var bElement = aResult.findElement.field('b');
+    assertDartObjectText(bElement.computeConstantValue(), r'''
+B
+  (super): A
+    f1: bool false
+    f2: bool false
+    constructorInvocation
+      constructor: package:test/a.dart::@class::A::@constructor::new
+  constructorInvocation
+    constructor: <testLibrary>::@class::B::@constructor::new
+  variable: package:test/a.dart::@class::A::@field::b
+''');
   }
 
   test_local_prefixedIdentifier_staticField_extension() async {
@@ -296,6 +325,9 @@ extension E on int {
 }
 ''');
     var a = result.findElement.topVar('a');
-    expect(a.computeConstantValue()!.toIntValue(), 42);
+    assertDartObjectText(a.computeConstantValue(), r'''
+int 42
+  variable: <testLibrary>::@topLevelVariable::a
+''');
   }
 }