Roll Observatory packages and add a roll script

packages/barback/test/package_graph/get_all_assets_test.dart

+// Copyright (c) 2013, 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 barback.test.barback_test;
+
+import 'dart:async';
+
+import 'package:barback/barback.dart';
+import 'package:scheduled_test/scheduled_test.dart';
+
+import '../utils.dart';
+
+main() {
+  initConfig();
+
+  test("gets all source assets", () {
+    initGraph(["app|a.txt", "app|b.txt", "app|c.txt"]);
+    updateSources(["app|a.txt", "app|b.txt", "app|c.txt"]);
+    expectAllAssets(["app|a.txt", "app|b.txt", "app|c.txt"]);
+    buildShouldSucceed();
+  });
+
+  test("includes transformed outputs", () {
+    initGraph(["app|a.txt", "app|foo.blub"], {"app": [
+      [new RewriteTransformer("blub", "blab")]
+    ]});
+    updateSources(["app|a.txt", "app|foo.blub"]);
+    expectAllAssets(["app|a.txt", "app|foo.blub", "app|foo.blab"]);
+    buildShouldSucceed();
+  });
+
+  test("includes overwritten outputs", () {
+    initGraph(["app|a.txt", "app|foo.blub"], {"app": [
+      [new RewriteTransformer("blub", "blub")]
+    ]});
+    updateSources(["app|a.txt", "app|foo.blub"]);
+    expectAllAssets({
+      "app|a.txt": "a",
+      "app|foo.blub": "foo.blub"
+    });
+    buildShouldSucceed();
+  });
+
+  test("completes to an error if two transformers output the same file", () {
+    initGraph(["app|foo.a"], {"app": [
+      [
+        new RewriteTransformer("a", "b"),
+        new RewriteTransformer("a", "b")
+      ]
+    ]});
+    updateSources(["app|foo.a"]);
+    expectAllAssetsShouldFail(isAssetCollisionException("app|foo.b"));
+  });
+
+  test("completes to an error if a transformer fails", () {
+    initGraph(["app|foo.txt"], {"app": [
+      [new BadTransformer(["app|foo.out"])]
+    ]});
+
+    updateSources(["app|foo.txt"]);
+    expectAllAssetsShouldFail(isTransformerException(
+        equals(BadTransformer.ERROR)));
+  });
+
+  test("completes to an aggregate error if there are multiple errors", () {
+    initGraph(["app|foo.txt"], {"app": [
+      [
+        new BadTransformer(["app|foo.out"]),
+        new BadTransformer(["app|foo.out2"])
+      ]
+    ]});
+
+    updateSources(["app|foo.txt"]);
+    expectAllAssetsShouldFail(isAggregateException([
+      isTransformerException(equals(BadTransformer.ERROR)),
+      isTransformerException(equals(BadTransformer.ERROR))
+    ]));
+  });
+
+  // Regression test.
+  test("getAllAssets() is called synchronously after after initializing "
+      "barback", () {
+    var provider = new MockProvider({
+      "app|a.txt": "a",
+      "app|b.txt": "b",
+      "app|c.txt": "c"
+    });
+    var barback = new Barback(provider);
+    barback.updateSources([
+      new AssetId.parse("app|a.txt"),
+      new AssetId.parse("app|b.txt"),
+      new AssetId.parse("app|c.txt")
+    ]);
+
+    expect(barback.getAllAssets().then((assets) {
+      return Future.wait(assets.map((asset) => asset.readAsString()));
+    }), completion(unorderedEquals(["a", "b", "c"])));
+  });
+}