diff --git a/pkg/analyzer/test/src/diagnostics/wrong_number_of_parameters_for_operator_test.dart b/pkg/analyzer/test/src/diagnostics/wrong_number_of_parameters_for_operator_test.dart
index 304dda3078e..1d3634043b2 100644
--- a/pkg/analyzer/test/src/diagnostics/wrong_number_of_parameters_for_operator_test.dart
+++ b/pkg/analyzer/test/src/diagnostics/wrong_number_of_parameters_for_operator_test.dart
@@ -2,7 +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/diagnostic/diagnostic.dart' as diag;
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../dart/resolution/context_collection_resolution.dart';
@@ -17,45 +16,267 @@ main() {
 
 @reflectiveTest
 class WrongNumberOfParametersForOperatorTest extends PubPackageResolutionTest {
-  test_binaryOperators() async {
-    await _checkTooFewAndTooMany('<');
-    await _checkTooFewAndTooMany('>');
-    await _checkTooFewAndTooMany('<=');
-    await _checkTooFewAndTooMany('>=');
-    await _checkTooFewAndTooMany('+');
-    await _checkTooFewAndTooMany('/');
-    await _checkTooFewAndTooMany('~/');
-    await _checkTooFewAndTooMany('*');
-    await _checkTooFewAndTooMany('%');
-    await _checkTooFewAndTooMany('|');
-    await _checkTooFewAndTooMany('^');
-    await _checkTooFewAndTooMany('&');
-    await _checkTooFewAndTooMany('<<');
-    await _checkTooFewAndTooMany('>>');
-    await _checkTooFewAndTooMany('>>>');
-    await _checkTooFewAndTooMany('[]');
+  test_ampersand_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator &() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '&' should declare exactly 1 parameters, but 0 found.
+}
+''');
   }
 
-  test_correct_number_of_parameters_binary() async {
-    await _checkCorrectSingle("<");
-    await _checkCorrectSingle(">");
-    await _checkCorrectSingle("<=");
-    await _checkCorrectSingle(">=");
-    await _checkCorrectSingle("+");
-    await _checkCorrectSingle("/");
-    await _checkCorrectSingle("~/");
-    await _checkCorrectSingle("*");
-    await _checkCorrectSingle("%");
-    await _checkCorrectSingle("|");
-    await _checkCorrectSingle("^");
-    await _checkCorrectSingle("&");
-    await _checkCorrectSingle("<<");
-    await _checkCorrectSingle(">>");
-    await _checkCorrectSingle(">>>");
-    await _checkCorrectSingle("[]");
+  test_ampersand_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator &(a) {}
+}
+''');
   }
 
-  test_correct_number_of_parameters_index_assignment() async {
+  test_ampersand_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator &(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '&' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_ampersand_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator &(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '&' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_ampersand_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator &(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '&' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_caret_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ^() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '^' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_caret_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ^(a) {}
+}
+''');
+  }
+
+  test_caret_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ^(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '^' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_caret_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ^(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '^' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_caret_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ^(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '^' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_greater_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '>' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_greater_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >(a) {}
+}
+''');
+  }
+
+  test_greater_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_greater_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_greater_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_greaterEqual_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >=() {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>=' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_greaterEqual_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >=(a) {}
+}
+''');
+  }
+
+  test_greaterEqual_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >=(a, {b}) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>=' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_greaterEqual_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >=(a, b) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>=' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_greaterEqual_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >=(a, [b]) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>=' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_index_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator []() {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_index_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator [](a) {}
+}
+''');
+  }
+
+  test_index_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator [](a, {b}) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_index_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator [](a, b) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_index_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator [](a, [b]) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_indexEq_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator []=() {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]=' should declare exactly 2 parameters, but 0 found.
+}
+''');
+  }
+
+  test_indexEq_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator []=(a) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]=' should declare exactly 2 parameters, but 1 found.
+}
+''');
+  }
+
+  test_indexEq_rP_rP() async {
     await resolveTestCodeWithDiagnostics(r'''
 class A {
   operator []=(a, b) {}
@@ -63,12 +284,149 @@ class A {
 ''');
   }
 
-  test_correct_number_of_parameters_minus() async {
-    await _checkCorrect("-", "");
-    await _checkCorrect("-", "a");
+  test_indexEq_rP_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator []=(a, b, {c}) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]=' should declare exactly 2 parameters, but 3 found.
+}
+''');
   }
 
-  test_unaryMinus() async {
+  test_indexEq_rP_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator []=(a, b, c) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]=' should declare exactly 2 parameters, but 3 found.
+}
+''');
+  }
+
+  test_indexEq_rP_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator []=(a, b, [c]) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '[]=' should declare exactly 2 parameters, but 3 found.
+}
+''');
+  }
+
+  test_less_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '<' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_less_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <(a) {}
+}
+''');
+  }
+
+  test_less_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '<' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_less_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '<' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_less_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '<' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_lessEqual_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <=() {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<=' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_lessEqual_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <=(a) {}
+}
+''');
+  }
+
+  test_lessEqual_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <=(a, {b}) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<=' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_lessEqual_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <=(a, b) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<=' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_lessEqual_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <=(a, [b]) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<=' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_minus_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator -() {}
+}
+''');
+  }
+
+  test_minus_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator -(a) {}
+}
+''');
+  }
+
+  test_minus_rP_rP() async {
     await resolveTestCodeWithDiagnostics(r'''
 class A {
   operator -(a, b) {}
@@ -78,40 +436,475 @@ class A {
 ''');
   }
 
-  test_unaryTilde() async {
-    await _check('~', 'a');
-    await _check('~', 'a, b');
-    await _check('~', 'a, [b]');
-    await _check('~', 'a, {b}');
-  }
-
-  Future<void> _check(String name, String parameters) async {
-    await assertErrorsInCode(
-      '''
+  test_percent_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
 class A {
-  operator $name($parameters) {}
-}
-''',
-      [error(diag.wrongNumberOfParametersForOperator, 21, 1)],
-    );
-  }
-
-  Future<void> _checkCorrect(String name, String parameters) async {
-    await resolveTestCodeWithDiagnostics('''
-class A {
-  operator $name($parameters) {}
+  operator %() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '%' should declare exactly 1 parameters, but 0 found.
 }
 ''');
   }
 
-  Future<void> _checkCorrectSingle(String name) async {
-    await _checkCorrect(name, 'a');
+  test_percent_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator %(a) {}
+}
+''');
   }
 
-  Future<void> _checkTooFewAndTooMany(String name) async {
-    await _check(name, '');
-    await _check(name, 'a, b');
-    await _check(name, 'a, [b]');
-    await _check(name, 'a, {b}');
+  test_percent_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator %(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '%' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_percent_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator %(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '%' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_percent_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator %(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '%' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_pipe_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator |() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '|' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_pipe_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator |(a) {}
+}
+''');
+  }
+
+  test_pipe_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator |(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '|' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_pipe_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator |(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '|' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_pipe_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator |(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '|' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_plus_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator +() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '+' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_plus_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator +(a) {}
+}
+''');
+  }
+
+  test_plus_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator +(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '+' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_plus_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator +(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '+' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_plus_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator +(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '+' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_shiftLeft_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <<() {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<<' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_shiftLeft_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <<(a) {}
+}
+''');
+  }
+
+  test_shiftLeft_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <<(a, {b}) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<<' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_shiftLeft_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <<(a, b) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<<' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_shiftLeft_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator <<(a, [b]) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '<<' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_shiftRight_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>() {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_shiftRight_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>(a) {}
+}
+''');
+  }
+
+  test_shiftRight_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>(a, {b}) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_shiftRight_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>(a, b) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_shiftRight_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>(a, [b]) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_slash_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator /() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '/' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_slash_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator /(a) {}
+}
+''');
+  }
+
+  test_slash_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator /(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '/' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_slash_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator /(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '/' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_slash_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator /(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '/' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_star_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator *() {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '*' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_star_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator *(a) {}
+}
+''');
+  }
+
+  test_star_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator *(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '*' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_star_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator *(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '*' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_star_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator *(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '*' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tilde_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~(a) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '~' should declare exactly 0 parameters, but 1 found.
+}
+''');
+  }
+
+  test_tilde_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~(a, {b}) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '~' should declare exactly 0 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tilde_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~(a, b) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '~' should declare exactly 0 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tilde_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~(a, [b]) {}
+//         ^
+// [diag.wrongNumberOfParametersForOperator] Operator '~' should declare exactly 0 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tildeSlash_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~/() {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '~/' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_tildeSlash_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~/(a) {}
+}
+''');
+  }
+
+  test_tildeSlash_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~/(a, {b}) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '~/' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tildeSlash_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~/(a, b) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '~/' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tildeSlash_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator ~/(a, [b]) {}
+//         ^^
+// [diag.wrongNumberOfParametersForOperator] Operator '~/' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tripleShiftRight_none() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>>() {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>>' should declare exactly 1 parameters, but 0 found.
+}
+''');
+  }
+
+  test_tripleShiftRight_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>>(a) {}
+}
+''');
+  }
+
+  test_tripleShiftRight_rP_rn() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>>(a, {b}) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tripleShiftRight_rP_rP() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>>(a, b) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>>' should declare exactly 1 parameters, but 2 found.
+}
+''');
+  }
+
+  test_tripleShiftRight_rP_rp() async {
+    await resolveTestCodeWithDiagnostics(r'''
+class A {
+  operator >>>(a, [b]) {}
+//         ^^^
+// [diag.wrongNumberOfParametersForOperator] Operator '>>>' should declare exactly 1 parameters, but 2 found.
+}
+''');
   }
 }