Don't run 'pub list-package-dirs' if there is no pubpsec.lock file.

pkg/analyzer/test/source/package_map_provider_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.package.map.provider;
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/source/package_map_provider.dart';
 import 'package:analyzer/source/pub_package_map_provider.dart';
+import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:unittest/unittest.dart';
 
+import '../reflective_tests.dart';
 import '../utils.dart';
 
 main() {
   initializeTestEnvironment();
+  runReflectiveTests(PubPackageMapProviderTest);
+}
 
-  group('PubPackageMapProvider', () {
-    group('parsePackageMap', () {
-      MemoryResourceProvider resourceProvider;
-      PubPackageMapProvider packageMapProvider;
-      const String projectPath = '/path/to/project';
-      Folder projectFolder;
+@reflectiveTest
+class PubPackageMapProviderTest {
+  static const String projectPath = '/path/to/project';
 
-      setUp(() {
-        resourceProvider = new MemoryResourceProvider();
-        packageMapProvider = new PubPackageMapProvider(
-            resourceProvider, DirectoryBasedDartSdk.defaultSdk);
-        projectFolder = resourceProvider.newFolder(projectPath);
-      });
+  DartSdk sdk = DirectoryBasedDartSdk.defaultSdk;
+  MemoryResourceProvider resourceProvider;
+  PubPackageMapProvider packageMapProvider;
+  Folder projectFolder;
 
-      PackageMapInfo parsePackageMap(Object obj) {
-        return packageMapProvider.parsePackageMap(obj, projectFolder);
+  PackageMapInfo parsePackageMap(Map obj) {
+    return packageMapProvider.parsePackageMap(obj, projectFolder);
+  }
+
+  void setUp() {
+    resourceProvider = new MemoryResourceProvider();
+    packageMapProvider = new PubPackageMapProvider(resourceProvider, sdk);
+    projectFolder = resourceProvider.newFolder(projectPath);
+  }
+
+  void test_computePackageMap_noLockFile() {
+    packageMapProvider =
+        new PubPackageMapProvider(resourceProvider, sdk, (Folder folder) {
+      fail('Unexpected "pub list" invocation');
+    });
+    PackageMapInfo info = packageMapProvider.computePackageMap(projectFolder);
+    expect(info.packageMap, isNull);
+    expect(info.dependencies, unorderedEquals(['$projectPath/pubspec.lock']));
+  }
+
+  void test_parsePackageMap_dontIgnoreNonExistingFolder() {
+    String packageName = 'foo';
+    String folderPath = '/path/to/folder';
+    Map<String, List<Folder>> result = parsePackageMap({
+      'packages': {packageName: folderPath}
+    }).packageMap;
+    expect(result, hasLength(1));
+    expect(result.keys, contains(packageName));
+    expect(result[packageName], hasLength(1));
+    expect(result[packageName][0], new isInstanceOf<Folder>());
+    expect(result[packageName][0].path, equals(folderPath));
+  }
+
+  void test_parsePackageMap_handleDependencies() {
+    String path1 = '/path/to/folder1/pubspec.lock';
+    String path2 = '/path/to/folder2/pubspec.lock';
+    resourceProvider.newFile(path1, '...');
+    resourceProvider.newFile(path2, '...');
+    Set<String> dependencies = parsePackageMap({
+      'packages': {},
+      'input_files': [path1, path2]
+    }).dependencies;
+    expect(dependencies, hasLength(2));
+    expect(dependencies, contains(path1));
+    expect(dependencies, contains(path2));
+  }
+
+  void test_parsePackageMap_normalFolder() {
+    String packageName = 'foo';
+    String folderPath = '/path/to/folder';
+    resourceProvider.newFolder(folderPath);
+    Map<String, List<Folder>> result = parsePackageMap({
+      'packages': {packageName: folderPath}
+    }).packageMap;
+    expect(result, hasLength(1));
+    expect(result.keys, contains(packageName));
+    expect(result[packageName], hasLength(1));
+    expect(result[packageName][0], new isInstanceOf<Folder>());
+    expect(result[packageName][0].path, equals(folderPath));
+  }
+
+  void test_parsePackageMap_packageMapsToList() {
+    String packageName = 'foo';
+    String folderPath1 = '/path/to/folder1';
+    String folderPath2 = '/path/to/folder2';
+    resourceProvider.newFolder(folderPath1);
+    resourceProvider.newFolder(folderPath2);
+    Map<String, List<Folder>> result = parsePackageMap({
+      'packages': {
+        packageName: [folderPath1, folderPath2]
       }
+    }).packageMap;
+    expect(result, hasLength(1));
+    expect(result.keys, contains(packageName));
+    expect(result[packageName], hasLength(2));
+    for (int i = 0; i < 2; i++) {
+      expect(result[packageName][i], new isInstanceOf<Folder>());
+      expect(result[packageName][i].path, isIn([folderPath1, folderPath2]));
+    }
+  }
 
-      test('normal folder', () {
-        String packageName = 'foo';
-        String folderPath = '/path/to/folder';
-        resourceProvider.newFolder(folderPath);
-        Map<String, List<Folder>> result = parsePackageMap({
-          'packages': {packageName: folderPath}
-        }).packageMap;
-        expect(result, hasLength(1));
-        expect(result.keys, contains(packageName));
-        expect(result[packageName], hasLength(1));
-        expect(result[packageName][0], new isInstanceOf<Folder>());
-        expect(result[packageName][0].path, equals(folderPath));
-      });
+  void test_parsePackageMap_relativePahInPackages() {
+    String packagePath = '/path/to/package';
+    String relativePackagePath = '../package';
+    String packageName = 'foo';
+    resourceProvider.newFolder(projectPath);
+    resourceProvider.newFolder(packagePath);
+    Map<String, List<Folder>> result = parsePackageMap({
+      'packages': {
+        packageName: [relativePackagePath]
+      }
+    }).packageMap;
+    expect(result[packageName][0].path, equals(packagePath));
+  }
 
-      test("don't ignore nonexistent folder", () {
-        String packageName = 'foo';
-        String folderPath = '/path/to/folder';
-        Map<String, List<Folder>> result = parsePackageMap({
-          'packages': {packageName: folderPath}
-        }).packageMap;
-        expect(result, hasLength(1));
-        expect(result.keys, contains(packageName));
-        expect(result[packageName], hasLength(1));
-        expect(result[packageName][0], new isInstanceOf<Folder>());
-        expect(result[packageName][0].path, equals(folderPath));
-      });
-
-      test('package maps to list', () {
-        String packageName = 'foo';
-        String folderPath1 = '/path/to/folder1';
-        String folderPath2 = '/path/to/folder2';
-        resourceProvider.newFolder(folderPath1);
-        resourceProvider.newFolder(folderPath2);
-        Map<String, List<Folder>> result = parsePackageMap({
-          'packages': {
-            packageName: [folderPath1, folderPath2]
-          }
-        }).packageMap;
-        expect(result, hasLength(1));
-        expect(result.keys, contains(packageName));
-        expect(result[packageName], hasLength(2));
-        for (int i = 0; i < 2; i++) {
-          expect(result[packageName][i], new isInstanceOf<Folder>());
-          expect(result[packageName][i].path, isIn([folderPath1, folderPath2]));
-        }
-      });
-
-      test('Handle dependencies', () {
-        String path1 = '/path/to/folder1/pubspec.lock';
-        String path2 = '/path/to/folder2/pubspec.lock';
-        resourceProvider.newFile(path1, '...');
-        resourceProvider.newFile(path2, '...');
-        Set<String> dependencies = parsePackageMap({
-          'packages': {},
-          'input_files': [path1, path2]
-        }).dependencies;
-        expect(dependencies, hasLength(2));
-        expect(dependencies, contains(path1));
-        expect(dependencies, contains(path2));
-      });
-
-      test('Relative path in packages', () {
-        String packagePath = '/path/to/package';
-        String relativePackagePath = '../package';
-        String packageName = 'foo';
-        resourceProvider.newFolder(projectPath);
-        resourceProvider.newFolder(packagePath);
-        Map<String, List<Folder>> result = parsePackageMap({
-          'packages': {
-            packageName: [relativePackagePath]
-          }
-        }).packageMap;
-        expect(result[packageName][0].path, equals(packagePath));
-      });
-
-      test('Relative path in dependencies', () {
-        String dependencyPath = '/path/to/pubspec.lock';
-        String relativeDependencyPath = '../pubspec.lock';
-        resourceProvider.newFolder(projectPath);
-        resourceProvider.newFile(dependencyPath, 'contents');
-        Set<String> dependencies = parsePackageMap({
-          'packages': {},
-          'input_files': [relativeDependencyPath]
-        }).dependencies;
-        expect(dependencies, hasLength(1));
-        expect(dependencies, contains(dependencyPath));
-      });
-    });
-  });
+  void test_parsePackageMap_relativePathInDependencies() {
+    String dependencyPath = '/path/to/pubspec.lock';
+    String relativeDependencyPath = '../pubspec.lock';
+    resourceProvider.newFolder(projectPath);
+    resourceProvider.newFile(dependencyPath, 'contents');
+    Set<String> dependencies = parsePackageMap({
+      'packages': {},
+      'input_files': [relativeDependencyPath]
+    }).dependencies;
+    expect(dependencies, hasLength(1));
+    expect(dependencies, contains(dependencyPath));
+  }
 }