Start sketching out a buildAll() method.

pkg/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 '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, but not consumed ones", () {
+    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.blab"]);
+    buildShouldSucceed();
+  });
+
+  test("includes non-primary inputs to transformers", () {
+    var transformer = new ManyToOneTransformer("txt");
+    initGraph({
+      "app|a.txt": "a.inc",
+      "app|a.inc": "a"
+    }, {"app": [[transformer]]});
+
+    updateSources(["app|a.txt", "app|a.inc"]);
+    expectAllAssets(["app|a.inc", "app|a.out"]);
+    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([
+      isTransformerException(equals(BadTransformer.ERROR)),
+      isTransformerException(equals(BadTransformer.ERROR))
+    ]);
+  });
+}