Spit pub tests into smaller suites.

utils/tests/pub/install/hosted/stay_locked_test.dart

+// Copyright (c) 2012, 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('pub_tests');
+
+#import('dart:io');
+
+#import('../../test_pub.dart');
+#import('../../../../../pkg/unittest/unittest.dart');
+
+main() {
+  test('keeps a pub server package locked to the version in the lockfile', () {
+    servePackages([package("foo", "1.0.0")]);
+
+    appDir([dependency("foo")]).scheduleCreate();
+
+    // This install should lock the foo dependency to version 1.0.0.
+    schedulePub(args: ['install'],
+        output: const RegExp(r"Dependencies installed!$"));
+
+    packagesDir({"foo": "1.0.0"}).scheduleValidate();
+
+    // Delete the packages path to simulate a new checkout of the application.
+    dir(packagesPath).scheduleDelete();
+
+    // Start serving a newer package as well.
+    servePackages([package("foo", "1.0.1")]);
+
+    // This install shouldn't update the foo dependency due to the lockfile.
+    schedulePub(args: ['install'],
+        output: const RegExp(r"Dependencies installed!$"));
+
+    packagesDir({"foo": "1.0.0"}).scheduleValidate();
+
+    run();
+  });
+}