Implement package linking for Bazel.

pkg/analyzer/test/src/summary/bazel_summary_test.dart

 // Copyright (c) 2016, 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:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
@@ skipping 31 matching lines @@
     sourceFactory = new SourceFactory(<UriResolver>[
       sdkResolver,
       resourceResolver,
       new _TestPackageResolver(resourceProvider)
     ], null, resourceProvider);
     context.sourceFactory = sourceFactory;
     // Create a new SummaryProvider instance.
     manager = new SummaryProvider(resourceProvider, _getOutputFolder, context);
   }
 
+  test_getLinkedPackages_null_missingBundle() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    // We don't write 'aaa', so we cannot get its package.
+    // Ask the package for the URI.
+    Source source = _resolveUri('package:components.aaa/a.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, isNull);
+  }
+
+  test_getLinkedPackages_null_missingDirectDependency() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    _setComponentFile(
+        'bbb',
+        'b.dart',
+        r'''
+import 'package:components.aaa/a.dart';
+class B extends A {}
+''');
+    _writeUnlinkedBundle('components.bbb');
+    // We cannot find 'aaa' bundle, so 'bbb' linking fails.
+    Source source = _resolveUri('package:components.bbb/b.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, isNull);
+  }
+
+  test_getLinkedPackages_null_missingIndirectDependency() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    _setComponentFile(
+        'bbb',
+        'b.dart',
+        r'''
+import 'package:components.aaa/a.dart';
+class B extends A {}
+''');
+    _setComponentFile(
+        'ccc',
+        'c.dart',
+        r'''
+import 'package:components.bbb/b.dart';
+class C extends B {}
+''');
+    _writeUnlinkedBundle('components.bbb');
+    _writeUnlinkedBundle('components.ccc');
+    // We cannot find 'aaa' bundle, so 'ccc' linking fails.
+    Source source = _resolveUri('package:components.ccc/c.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, isNull);
+  }
+
+  test_getLinkedPackages_withDependency_export() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    _setComponentFile(
+        'bbb',
+        'b.dart',
+        r'''
+export 'package:components.aaa/a.dart';
+''');
+    _writeUnlinkedBundle('components.aaa');
+    _writeUnlinkedBundle('components.bbb');
+    Source source = _resolveUri('package:components.bbb/b.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, hasLength(2));
+  }
+
+  test_getLinkedPackages_withDependency_import() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    _setComponentFile(
+        'bbb',
+        'b.dart',
+        r'''
+import 'package:components.aaa/a.dart';
+class B extends A {}
+''');
+    _writeUnlinkedBundle('components.aaa');
+    _writeUnlinkedBundle('components.bbb');
+    Source source = _resolveUri('package:components.bbb/b.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, hasLength(2));
+  }
+
+  test_getLinkedPackages_withDependency_import_cycle() {
+    _setComponentFile(
+        'aaa',
+        'a.dart',
+        r'''
+import 'package:components.bbb/b.dart';
+class A {}
+class A2 extends B {}
+''');
+    _setComponentFile(
+        'bbb',
+        'b.dart',
+        r'''
+import 'package:components.aaa/a.dart';
+class B extends A {}
+class B2 extends A2 {}
+''');
+    _writeUnlinkedBundle('components.aaa');
+    _writeUnlinkedBundle('components.bbb');
+    Source source = _resolveUri('package:components.bbb/b.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, hasLength(2));
+  }
+
+  test_getLinkedPackages_withDependency_import_indirect() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    _setComponentFile(
+        'bbb',
+        'b.dart',
+        r'''
+import 'package:components.aaa/a.dart';
+class B extends A {}
+''');
+    _setComponentFile(
+        'ccc',
+        'c.dart',
+        r'''
+import 'package:components.bbb/b.dart';
+class C extends B {}
+''');
+    _writeUnlinkedBundle('components.aaa');
+    _writeUnlinkedBundle('components.bbb');
+    _writeUnlinkedBundle('components.ccc');
+    Source source = _resolveUri('package:components.ccc/c.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, hasLength(3));
+  }
+
+  test_getLinkedPackages_withoutDependencies() {
+    _setComponentFile('aaa', 'a.dart', 'class A {}');
+    _writeUnlinkedBundle('components.aaa');
+    // Ask the package for the URI.
+    Source source = _resolveUri('package:components.aaa/a.dart');
+    List<Package> packages = manager.getLinkedPackages(source);
+    expect(packages, hasLength(1));
+  }
+
   test_getUnlinkedForUri() {
     _setComponentFile('aaa', 'a1.dart', 'class A1 {}');
     _setComponentFile('aaa', 'a2.dart', 'class A2 {}');
     _writeUnlinkedBundle('components.aaa');
     // Ask the package for the URI.
     Source source1 = _resolveUri('package:components.aaa/a1.dart');
     Source source2 = _resolveUri('package:components.aaa/a2.dart');
     Package package = manager.getUnlinkedForUri(source1.uri);
     expect(package, isNotNull);
     // The same instance is returned to another URI in the same package.
@@ skipping 136 matching lines @@
       }
     }
     return null;
   }
 
   @override
   Uri restoreAbsolute(Source source) {
     throw new UnimplementedError();
   }
 }