Support self-referential package: imports with Pub.

utils/tests/pub/pub_test.dart

Index: utils/tests/pub/pub_test.dart
diff --git a/utils/tests/pub/pub_test.dart b/utils/tests/pub/pub_test.dart
index 34046bd345a451d99f83d00df2264ceb7c3a64ac..2f99b6849ea1c6bfc56eb10b5221916998646645 100644
--- a/utils/tests/pub/pub_test.dart
+++ b/utils/tests/pub/pub_test.dart
@@ -90,6 +90,45 @@ listCommand() {
 }
 
 installCommand() {
+  group('requires', () {
+    test('a pubspec', () {
+      dir(appPath, []).scheduleCreate();
+
+      schedulePub(args: ['install'],
+          error: const RegExp(@'^Could not find a file named "pubspec.yaml"'));
+
+      run();
+    });
+
+    test('a pubspec with a "name" key', () {
+      dir(appPath, [
+        pubspec({"dependencies": {"foo": null}})
+      ]).scheduleCreate();
+
+      schedulePub(args: ['install'],
+          error: const RegExp(@'^"pubspec.yaml" must contain a "name" key\.'));
+
+      run();
+    });
+  });
+
+  test('creates a self-referential symlink', () {
+    // The symlink should use the name in the pubspec, not the name of the
+    // directory.
+    dir(appPath, [
+      pubspec({"name": "myapp_name"})
+    ]).scheduleCreate();
+
+    schedulePub(args: ['install'],
+        output: const RegExp(@"Dependencies installed!$"));
+
+    dir(packagesPath, [
+      dir("myapp_name", [pubspec({"name": "myapp_name"})])
+    ]).scheduleValidate();
+
+    run();
+  });
+
   test('checks out a package from the SDK', () {
     dir(sdkPath, [
       file('revision', '1234'),
@@ -97,7 +136,7 @@ installCommand() {
     ]).scheduleCreate();
 
     dir(appPath, [
-      pubspec({"dependencies": {"foo": null}})
+      pubspec({"name": "myapp", "dependencies": {"foo": null}})
     ]).scheduleCreate();
 
     schedulePub(args: ['install'],
@@ -633,6 +672,28 @@ installCommand() {
 }
 
 updateCommand() {
+  group('requires', () {
+    test('a pubspec', () {
+      dir(appPath, []).scheduleCreate();
+
+      schedulePub(args: ['update'],
+          error: const RegExp(@'^Could not find a file named "pubspec.yaml"'));
+
+      run();
+    });
+
+    test('a pubspec with a "name" key', () {
+      dir(appPath, [
+        pubspec({"dependencies": {"foo": null}})
+      ]).scheduleCreate();
+
+      schedulePub(args: ['update'],
+          error: const RegExp(@'^"pubspec.yaml" must contain a "name" key\.'));
+
+      run();
+    });
+  });
+
   test("updates locked Git packages", () {
     ensureGit();