#2846. Add unquoted imports tests for parts (#2890)

LanguageFeatures/Unquoted-imports/lib/co19_unquoted_imports.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion We make a breaking change and remove support for the
+/// long-deprecated library name syntax from `part of` directives. An unquoted
+/// series of identifiers after `part of` then gets unambiguously interpreted as
+/// this proposal's semantics. In other words, `part of foo.bar;` is part of the
+/// library at `package:foo/bar.dart`, not part of the library with name
+/// `foo.bar`.
+///
+/// @description Checks that unquoted syntax can be used in `part` and `part of`
+/// directives.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports,enhanced-parts
+
+part of co19_unquoted_imports/part_A01_t02;
+part co19_unquoted_imports/co19_unquoted_imports_part;
+
+String partId = "co19_unquoted_imports.dart";

LanguageFeatures/Unquoted-imports/lib/co19_unquoted_imports_part.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion We make a breaking change and remove support for the
+/// long-deprecated library name syntax from `part of` directives. An unquoted
+/// series of identifiers after `part of` then gets unambiguously interpreted as
+/// this proposal's semantics. In other words, `part of foo.bar;` is part of the
+/// library at `package:foo/bar.dart`, not part of the library with name
+/// `foo.bar`.
+///
+/// @description Checks that unquoted syntax can be used in `part` and `part of`
+/// directives.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports,enhanced-parts
+
+part of co19_unquoted_imports;
+
+String partId2 = "co19_unquoted_imports_part.dart";

LanguageFeatures/Unquoted-imports/lib/part_A01_t01.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion We make a breaking change and remove support for the
+/// long-deprecated library name syntax from `part of` directives. An unquoted
+/// series of identifiers after `part of` then gets unambiguously interpreted as
+/// this proposal's semantics. In other words, `part of foo.bar;` is part of the
+/// library at `package:foo/bar.dart`, not part of the library with name
+/// `foo.bar`.
+///
+/// @description Checks that unquoted syntax can be used in `part` and `part of`
+/// directives.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports
+
+part co19_unquoted_imports/part_A01_t01_part;
+
+main() {
+  if (partId != "part_A01_t01_part.dart") { // Cannot use expect.dart here
+    throw "Wrong part '$partId'";
+  }
+}

LanguageFeatures/Unquoted-imports/lib/part_A01_t01_part.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion We make a breaking change and remove support for the
+/// long-deprecated library name syntax from `part of` directives. An unquoted
+/// series of identifiers after `part of` then gets unambiguously interpreted as
+/// this proposal's semantics. In other words, `part of foo.bar;` is part of the
+/// library at `package:foo/bar.dart`, not part of the library with name
+/// `foo.bar`.
+///
+/// @description Checks that unquoted syntax can be used in `part` and `part of`
+/// directives.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports
+
+part of co19_unquoted_imports/part_A01_t01;
+
+String partId = "part_A01_t01_part.dart";

LanguageFeatures/Unquoted-imports/lib/part_A01_t02.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion We make a breaking change and remove support for the
+/// long-deprecated library name syntax from `part of` directives. An unquoted
+/// series of identifiers after `part of` then gets unambiguously interpreted as
+/// this proposal's semantics. In other words, `part of foo.bar;` is part of the
+/// library at `package:foo/bar.dart`, not part of the library with name
+/// `foo.bar`.
+///
+/// @description Checks that unquoted syntax can be used in `part` and `part of`
+/// directives.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports,enhanced-parts
+
+part co19_unquoted_imports;
+
+main() {
+  if (partId != "co19_unquoted_imports.dart") { // Cannot use expect.dart here
+    throw "Wrong part '$partId'";
+  }
+  if (partId2 != "co19_unquoted_imports_part.dart") {
+    throw "Wrong part '$partId2'";
+  }
+}

LanguageFeatures/Unquoted-imports/of.parts.test/lib/part_A02_t01.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion There are two directives for working with part files, `part` and
+/// `part of`. This means that when the parser sees `part of`, it doesn't
+/// immediately know if it is looking at a `part` directive followed by an
+/// unquoted identifier like `part of`; or `part of.some/other.thing;` versus a
+/// `part of` directive like `part of thing;` or `part of 'uri.dart';` It must
+/// lookahead past the of identifier to see if the next token is `;`, `.`, `/`,
+/// or another identifier.
+///
+/// @description Checks that `part of.parts.test` is parsed like a
+/// `part 'package:of.parts.test/test.dart';`.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports
+
+part of.parts.test;
+
+main() {
+  if (partId != "test") { // Cannot use expect.dart here
+    throw "Wrong part '$partId'";
+  }
+}

LanguageFeatures/Unquoted-imports/of.parts.test/lib/test.dart

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+// Copyright (c) 2024, 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.
+
+/// @assertion There are two directives for working with part files, `part` and
+/// `part of`. This means that when the parser sees `part of`, it doesn't
+/// immediately know if it is looking at a `part` directive followed by an
+/// unquoted identifier like `part of`; or `part of.some/other.thing;` versus a
+/// `part of` directive like `part of thing;` or `part of 'uri.dart';` It must
+/// lookahead past the of identifier to see if the next token is `;`, `.`, `/`,
+/// or another identifier.
+///
+/// @description Checks that `part of.parts.test` is parsed like a
+/// `part 'package:of.parts.test/test.dart';`.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=unquoted-imports
+
+part of of.parts.test/part_A02_t01;
+
+String partId = "test";

LanguageFeatures/Unquoted-imports/of.parts.test/pubspec.yaml

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+name: of.parts.test
+description: Internal package used by co19 tests for Unquoted imports feature
+
+# This tests isn't intended for publishing on pub.dev.
+publish_to: none
+
+environment:
+  sdk: '>=3.6.0-255.0.dev'