Add tests for problem with newline encoding in multiline strings.

R=karlklose@google.com

Review URL: https://codereview.chromium.org//1252443002.

.gitattributes

@@ -16,6 +16,9 @@ tests/compiler/dart2js_extra/string_interpolation_dynamic_test.dart -text
 tests/compiler/dart2js_extra/literal_string_juxtaposition_test.dart -text
 tests/language/raw_string_test.dart -text
 tests/language/multiline_strings_test.dart -text
+tests/language/multiline_newline_cr.dart -text
+tests/language/multiline_newline_crlf.dart -text
+tests/language/multiline_newline_lf.dart -text
 tests/lib/convert/json_pretty_test.dart -text
 tests/lib/mirrors/method_mirror_source_line_ending_test.dart -text
 tests/lib/mirrors/method_mirror_source_line_ending_cr.dart -text

tests/language/language_analyzer.status

@@ -76,6 +76,13 @@ mixin_super_constructor_named_test/01: MissingCompileTimeError # Issue 19576
 mixin_super_constructor_positionals_test/01: MissingCompileTimeError # Issue 19576
 reify_typevar_static_test/00: MissingCompileTimeError # Issue 21565
 
+multiline_newline_test/01: CompileTimeError # Issue 23888
+multiline_newline_test/02: CompileTimeError # Issue 23888
+multiline_newline_test/03: CompileTimeError # Issue 23888
+multiline_newline_test/04: MissingCompileTimeError # Issue 23888
+multiline_newline_test/05: MissingCompileTimeError # Issue 23888
+multiline_newline_test/06: MissingCompileTimeError # Issue 23888
+
 # Please add new failing tests before this line.
 # Section below is for invalid tests.
 #

tests/language/language_analyzer2.status

@@ -32,6 +32,13 @@ external_test/25: Fail
 constructor_duplicate_final_test/03: Fail
 reify_typevar_static_test/00: MissingCompileTimeError # Issue 21565
 
+multiline_newline_test/01: CompileTimeError # Issue 23888
+multiline_newline_test/02: CompileTimeError # Issue 23888
+multiline_newline_test/03: CompileTimeError # Issue 23888
+multiline_newline_test/04: MissingCompileTimeError # Issue 23888
+multiline_newline_test/05: MissingCompileTimeError # Issue 23888
+multiline_newline_test/06: MissingCompileTimeError # Issue 23888
+
 # Please add new failing tests before this line.
 # Section below is for invalid tests.
 #

tests/language/language_dart2js.status

@@ -77,6 +77,14 @@ const_error_multiply_initialized_test/04: CompileTimeError # Issue 23618
 # VM specific tests that should not be run by dart2js.
 vm/*: Skip # Issue 12699
 
+multiline_newline_test/01: CompileTimeError # Issue 23888
+multiline_newline_test/02: CompileTimeError # Issue 23888
+multiline_newline_test/03: CompileTimeError # Issue 23888
+multiline_newline_test/04: MissingCompileTimeError # Issue 23888
+multiline_newline_test/05: MissingCompileTimeError # Issue 23888
+multiline_newline_test/06: MissingCompileTimeError # Issue 23888
+multiline_newline_test/none: RuntimeError # Issue 23888
+
 [ $compiler == dart2js && $checked ]
 type_variable_bounds_test/02: Fail # Issue 12702
 type_variable_bounds2_test/01: Fail # Issue 12702

tests/language/multiline_newline_cr.dart

@@ -0,0 +1 @@
+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file

tests/language/multiline_newline_crlf.dart

@@ -0,0 +1,15 @@
+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// 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.
+
+library multiline_newline_crlf;
+
+const constantMultilineString = """
+a
+b
+""";
+
+var nonConstantMultilineString = """
+a
+b
+""";

tests/language/multiline_newline_lf.dart

@@ -0,0 +1,15 @@
+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// 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.
+
+library multiline_newline_lf;
+
+const constantMultilineString = """
+a
+b
+""";
+
+var nonConstantMultilineString = """
+a
+b
+""";

tests/language/multiline_newline_test.dart

@@ -0,0 +1,57 @@
+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// 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:expect/expect.dart';
+import 'multiline_newline_cr.dart' as cr;
+import 'multiline_newline_crlf.dart' as crlf;
+import 'multiline_newline_lf.dart' as lf;
+
+main() {
+  Expect.equals(4, cr.constantMultilineString.length);
+  Expect.equals(4, crlf.constantMultilineString.length);
+  Expect.equals(4, lf.constantMultilineString.length);
+  Expect.equals(cr.constantMultilineString, crlf.constantMultilineString);
+  Expect.equals(crlf.constantMultilineString, lf.constantMultilineString);
+  Expect.equals(lf.constantMultilineString, cr.constantMultilineString);
+
+  Expect.equals(4, cr.nonConstantMultilineString.length);
+  Expect.equals(4, crlf.nonConstantMultilineString.length);
+  Expect.equals(4, lf.nonConstantMultilineString.length);
+  Expect.equals(cr.nonConstantMultilineString, crlf.nonConstantMultilineString);
+  Expect.equals(crlf.nonConstantMultilineString, lf.nonConstantMultilineString);
+  Expect.equals(lf.nonConstantMultilineString, cr.nonConstantMultilineString);
+
+  const c1 =
+      cr.constantMultilineString == crlf.constantMultilineString ? true : null;
+  const c2 =
+      crlf.constantMultilineString == lf.constantMultilineString ? true : null;
+  const c3 =
+      lf.constantMultilineString == cr.constantMultilineString ? true : null;
+  Expect.isTrue(c1);
+  Expect.isTrue(c2);
+  Expect.isTrue(c3);
+
+  const c4 = c1 ? 1 : 2;  /// 01: ok
+  Expect.equals(1, c4);   /// 01: continued
+
+  const c5 = c2 ? 2 : 3;  /// 02: ok
+  Expect.equals(2, c5);   /// 02: continued
+
+  const c6 = c3 ? 3 : 4;  /// 03: ok
+  Expect.equals(3, c6);   /// 03: continued
+
+  const c7 =
+      cr.constantMultilineString != crlf.constantMultilineString ? true : null;
+  const c8 =
+      crlf.constantMultilineString != lf.constantMultilineString ? true : null;
+  const c9 =
+      lf.constantMultilineString != cr.constantMultilineString ? true : null;
+  Expect.isNull(c7);
+  Expect.isNull(c8);
+  Expect.isNull(c9);
+
+  const c10 = c7 ? 1 : 2;  /// 04: compile-time error
+  const c11 = c8 ? 2 : 3;  /// 05: compile-time error
+  const c12 = c9 ? 3 : 4;  /// 06: compile-time error
+}