Allow multiple dirs per package in the data returned by "pub list".

pkg/analysis_server/test/package_uri_resolver_test.dart

 // Copyright (c) 2014, 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 test.resolver.package;
 
 import 'package:analysis_server/src/package_uri_resolver.dart';
 import 'package:analysis_server/src/resource.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:unittest/unittest.dart';
 
 import 'reflective_tests.dart';
 
 main() {
   groupSep = ' | ';
 
   group('PackageMapUriResolver', () {
     runReflectiveTests(_PackageMapUriResolverTest);
   });
 }
 
 
 @ReflectiveTestCase()
 class _PackageMapUriResolverTest {
-  static const EMPTY_MAP = const <String, Folder>{};
+  static const EMPTY_MAP = const <String, List<Folder>>{};
   MemoryResourceProvider provider = new MemoryResourceProvider();
 
   setUp() {
   }
 
   tearDown() {
   }
 
   void test_isPackageUri() {
     Uri uri = Uri.parse('package:test/test.dart');
@@ skipping 27 matching lines @@
     expect(uri.scheme, 'memfs');
     expect(PackageMapUriResolver.isPackageUri(uri), isFalse);
   }
 
   void test_resolve_OK() {
     const pkgFileA = '/pkgA/lib/libA.dart';
     const pkgFileB = '/pkgB/lib/libB.dart';
     provider.newFile(pkgFileA, 'library lib_a;');
     provider.newFile(pkgFileB, 'library lib_b;');
     PackageMapUriResolver resolver = new PackageMapUriResolver(provider,
-        <String, Folder>{
-      'pkgA': provider.getResource('/pkgA/lib/'),
-      'pkgB': provider.getResource('/pkgB/lib/')
+        <String, List<Folder>>{
+      'pkgA': [provider.getResource('/pkgA/lib/')],
+      'pkgB': [provider.getResource('/pkgB/lib/')]
     });
     {
       Uri uri = Uri.parse('package:pkgA/libA.dart');
       Source result = resolver.resolveAbsolute(uri);
       expect(result, isNotNull);
       expect(result.exists(), isTrue);
       expect(result.uriKind, UriKind.PACKAGE_URI);
       expect(result.fullName, pkgFileA);
     }
     {
       Uri uri = Uri.parse('package:pkgB/libB.dart');
       Source result = resolver.resolveAbsolute(uri);
       expect(result, isNotNull);
       expect(result.exists(), isTrue);
       expect(result.uriKind, UriKind.PACKAGE_URI);
       expect(result.fullName, pkgFileB);
     }
   }
 
+  void test_resolve_multiple_folders() {
+    const pkgFileA = '/part1/lib/libA.dart';
+    const pkgFileB = '/part2/lib/libB.dart';
+    provider.newFile(pkgFileA, 'library lib_a');
+    provider.newFile(pkgFileB, 'library lib_b');
+    PackageMapUriResolver resolver = new PackageMapUriResolver(provider,
+        <String, List<Folder>>{
+      'pkg': [provider.getResource('/part1/lib/'),
+              provider.getResource('/part2/lib/')]
+    });
+    {
+      Uri uri = Uri.parse('package:pkg/libA.dart');
+      Source result = resolver.resolveAbsolute(uri);
+      expect(result, isNotNull);
+      expect(result.exists(), isTrue);
+      expect(result.uriKind, UriKind.PACKAGE_URI);
+      expect(result.fullName, pkgFileA);
+    }
+    {
+      Uri uri = Uri.parse('package:pkg/libB.dart');
+      Source result = resolver.resolveAbsolute(uri);
+      expect(result, isNotNull);
+      expect(result.exists(), isTrue);
+      expect(result.uriKind, UriKind.PACKAGE_URI);
+      expect(result.fullName, pkgFileB);
+    }
+  }
+
   void test_resolve_nonPackage() {
     UriResolver resolver = new PackageMapUriResolver(provider, EMPTY_MAP);
     Uri uri = Uri.parse('dart:core');
     Source result = resolver.resolveAbsolute(uri);
     expect(result, isNull);
   }
 
   void test_resolve_package_invalid_leadingSlash() {
     UriResolver resolver = new PackageMapUriResolver(provider, EMPTY_MAP);
     Uri uri = Uri.parse('package:/foo');
@@ skipping 17 matching lines @@
 
   void test_resolve_package_notInMap() {
     UriResolver resolver = new PackageMapUriResolver(provider, EMPTY_MAP);
     Uri uri = Uri.parse('package:analyzer/analyzer.dart');
     Source result = resolver.resolveAbsolute(uri);
     expect(result, isNotNull);
     expect(result.exists(), isFalse);
     expect(result.fullName, 'package:analyzer/analyzer.dart');
   }
 }