Remove barback from the repo.

pkg/barback/test/package_graph/transform/concurrency_test.dart

Index: pkg/barback/test/package_graph/transform/concurrency_test.dart
diff --git a/pkg/barback/test/package_graph/transform/concurrency_test.dart b/pkg/barback/test/package_graph/transform/concurrency_test.dart
deleted file mode 100644
index f8927bb8c36b46644e60928a289971312fb98176..0000000000000000000000000000000000000000
--- a/pkg/barback/test/package_graph/transform/concurrency_test.dart
+++ /dev/null
@@ -1,594 +0,0 @@
-// 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.
-
-/// This library contains tests for transformer behavior that relates to actions
-/// happening concurrently or other complex asynchronous timing behavior.
-library barback.test.package_graph.transform.concurrency_test;
-
-import 'package:barback/src/utils.dart';
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../../utils.dart';
-
-main() {
-  initConfig();
-  test("runs transforms in the same phase in parallel", () {
-    var transformerA = new RewriteTransformer("txt", "a");
-    var transformerB = new RewriteTransformer("txt", "b");
-    initGraph(["app|foo.txt"], {"app": [[transformerA, transformerB]]});
-
-    transformerA.pauseApply();
-    transformerB.pauseApply();
-
-    updateSources(["app|foo.txt"]);
-
-    transformerA.waitUntilStarted();
-    transformerB.waitUntilStarted();
-
-    // They should both still be running.
-    expect(transformerA.isRunning, completion(isTrue));
-    expect(transformerB.isRunning, completion(isTrue));
-
-    transformerA.resumeApply();
-    transformerB.resumeApply();
-
-    expectAsset("app|foo.a", "foo.a");
-    expectAsset("app|foo.b", "foo.b");
-    buildShouldSucceed();
-  });
-
-  test("discards outputs from a transform whose primary input is removed "
-      "during processing", () {
-    var rewrite = new RewriteTransformer("txt", "out");
-    initGraph(["app|foo.txt"], {"app": [[rewrite]]});
-
-    rewrite.pauseApply();
-    updateSources(["app|foo.txt"]);
-    rewrite.waitUntilStarted();
-
-    removeSources(["app|foo.txt"]);
-    rewrite.resumeApply();
-    expectNoAsset("app|foo.out");
-    buildShouldSucceed();
-  });
-
-  test("applies the correct transform if an asset is modified during isPrimary",
-      () {
-    var check1 = new CheckContentTransformer("first", "#1");
-    var check2 = new CheckContentTransformer("second", "#2");
-    initGraph({
-      "app|foo.txt": "first",
-    }, {"app": [[check1, check2]]});
-
-    check1.pauseIsPrimary("app|foo.txt");
-    updateSources(["app|foo.txt"]);
-    // Ensure that we're waiting on check1's isPrimary.
-    schedule(pumpEventQueue);
-
-    modifyAsset("app|foo.txt", "second");
-    updateSources(["app|foo.txt"]);
-    check1.resumeIsPrimary("app|foo.txt");
-
-    expectAsset("app|foo.txt", "second#2");
-    buildShouldSucceed();
-  });
-
-  test("applies the correct transform if an asset is removed and added during "
-      "isPrimary", () {
-    var check1 = new CheckContentTransformer("first", "#1");
-    var check2 = new CheckContentTransformer("second", "#2");
-    initGraph({
-      "app|foo.txt": "first",
-    }, {"app": [[check1, check2]]});
-
-    check1.pauseIsPrimary("app|foo.txt");
-    updateSources(["app|foo.txt"]);
-    // Ensure that we're waiting on check1's isPrimary.
-    schedule(pumpEventQueue);
-
-    removeSources(["app|foo.txt"]);
-    modifyAsset("app|foo.txt", "second");
-    updateSources(["app|foo.txt"]);
-    check1.resumeIsPrimary("app|foo.txt");
-
-    expectAsset("app|foo.txt", "second#2");
-    buildShouldSucceed();
-  });
-
-  test("restarts processing if a change occurs during processing", () {
-    var transformer = new RewriteTransformer("txt", "out");
-    initGraph(["app|foo.txt"], {"app": [[transformer]]});
-
-    transformer.pauseApply();
-
-    updateSources(["app|foo.txt"]);
-    transformer.waitUntilStarted();
-
-    // Now update the graph during it.
-    updateSources(["app|foo.txt"]);
-    transformer.resumeApply();
-
-    expectAsset("app|foo.out", "foo.out");
-    buildShouldSucceed();
-
-    expect(transformer.numRuns, completion(equals(2)));
-  });
-
-  test("aborts processing if the primary input is removed during processing",
-      () {
-    var transformer = new RewriteTransformer("txt", "out");
-    initGraph(["app|foo.txt"], {"app": [[transformer]]});
-
-    transformer.pauseApply();
-
-    updateSources(["app|foo.txt"]);
-    transformer.waitUntilStarted();
-
-    // Now remove its primary input while it's running.
-    removeSources(["app|foo.txt"]);
-    transformer.resumeApply();
-
-    expectNoAsset("app|foo.out");
-    buildShouldSucceed();
-
-    expect(transformer.numRuns, completion(equals(1)));
-  });
-
-  test("restarts processing if a change to a new secondary input occurs during "
-      "processing", () {
-    var transformer = new ManyToOneTransformer("txt");
-    initGraph({
-      "app|foo.txt": "bar.inc",
-      "app|bar.inc": "bar"
-    }, {"app": [[transformer]]});
-
-    transformer.pauseApply();
-
-    updateSources(["app|foo.txt", "app|bar.inc"]);
-    transformer.waitUntilStarted();
-
-    // Give the transform time to load bar.inc the first time.
-    schedule(pumpEventQueue);
-
-    // Now update the secondary input before the transform finishes.
-    modifyAsset("app|bar.inc", "baz");
-    updateSources(["app|bar.inc"]);
-    // Give bar.inc enough time to be loaded and marked available before the
-    // transformer completes.
-    schedule(pumpEventQueue);
-
-    transformer.resumeApply();
-
-    expectAsset("app|foo.out", "baz");
-    buildShouldSucceed();
-
-    expect(transformer.numRuns, completion(equals(2)));
-  });
-
-  test("doesn't restart processing if a change to an old secondary input "
-      "occurs during processing", () {
-    var transformer = new ManyToOneTransformer("txt");
-    initGraph({
-      "app|foo.txt": "bar.inc",
-      "app|bar.inc": "bar",
-      "app|baz.inc": "baz"
-    }, {"app": [[transformer]]});
-
-    updateSources(["app|foo.txt", "app|bar.inc", "app|baz.inc"]);
-    expectAsset("app|foo.out", "bar");
-    buildShouldSucceed();
-
-    transformer.pauseApply();
-    modifyAsset("app|foo.txt", "baz.inc");
-    updateSources(["app|foo.txt"]);
-    transformer.waitUntilStarted();
-
-    // Now update the old secondary input before the transform finishes.
-    modifyAsset("app|bar.inc", "new bar");
-    updateSources(["app|bar.inc"]);
-    // Give bar.inc enough time to be loaded and marked available before the
-    // transformer completes.
-    schedule(pumpEventQueue);
-
-    transformer.resumeApply();
-    expectAsset("app|foo.out", "baz");
-    buildShouldSucceed();
-
-    // Should have run once the first time, then again when switching to
-    // baz.inc. Should not run a third time because of bar.inc being modified.
-    expect(transformer.numRuns, completion(equals(2)));
-  });
-
-  test("restarts before finishing later phases when a change occurs", () {
-    var txtToInt = new RewriteTransformer("txt", "int");
-    var intToOut = new RewriteTransformer("int", "out");
-    initGraph(["app|foo.txt", "app|bar.txt"],
-        {"app": [[txtToInt], [intToOut]]});
-
-    txtToInt.pauseApply();
-
-    updateSources(["app|foo.txt"]);
-    txtToInt.waitUntilStarted();
-
-    // Now update the graph during it.
-    updateSources(["app|bar.txt"]);
-    txtToInt.resumeApply();
-
-    expectAsset("app|foo.out", "foo.int.out");
-    expectAsset("app|bar.out", "bar.int.out");
-    buildShouldSucceed();
-
-    // Should only have run each transform once for each primary.
-    expect(txtToInt.numRuns, completion(equals(2)));
-    expect(intToOut.numRuns, completion(equals(2)));
-  });
-
-  test("doesn't return an asset until it's finished rebuilding", () {
-    initGraph(["app|foo.in"], {"app": [
-      [new RewriteTransformer("in", "mid")],
-      [new RewriteTransformer("mid", "out")]
-    ]});
-
-    updateSources(["app|foo.in"]);
-    expectAsset("app|foo.out", "foo.mid.out");
-    buildShouldSucceed();
-
-    pauseProvider();
-    modifyAsset("app|foo.in", "new");
-    updateSources(["app|foo.in"]);
-    expectAssetDoesNotComplete("app|foo.out");
-    buildShouldNotBeDone();
-
-    resumeProvider();
-    expectAsset("app|foo.out", "new.mid.out");
-    buildShouldSucceed();
-  });
-
-  test("doesn't return an asset until its in-place transform is done", () {
-    var rewrite = new RewriteTransformer("txt", "txt");
-    initGraph(["app|foo.txt"], {"app": [[rewrite]]});
-
-    rewrite.pauseApply();
-    updateSources(["app|foo.txt"]);
-    expectAssetDoesNotComplete("app|foo.txt");
-
-    rewrite.resumeApply();
-    expectAsset("app|foo.txt", "foo.txt");
-    buildShouldSucceed();
-  });
-
-  test("doesn't return an asset that's removed during isPrimary", () {
-    var rewrite = new RewriteTransformer("txt", "txt");
-    initGraph(["app|foo.txt"], {"app": [[rewrite]]});
-
-    rewrite.pauseIsPrimary("app|foo.txt");
-    updateSources(["app|foo.txt"]);
-    // Make sure we're waiting on isPrimary.
-    schedule(pumpEventQueue);
-
-    removeSources(["app|foo.txt"]);
-    rewrite.resumeIsPrimary("app|foo.txt");
-    expectNoAsset("app|foo.txt");
-    buildShouldSucceed();
-  });
-
-  test("doesn't transform an asset that goes from primary to non-primary "
-      "during isPrimary", () {
-    var check = new CheckContentTransformer(new RegExp(r"^do$"), "ne");
-    initGraph({
-      "app|foo.txt": "do"
-    }, {"app": [[check]]});
-
-    check.pauseIsPrimary("app|foo.txt");
-    updateSources(["app|foo.txt"]);
-    // Make sure we're waiting on isPrimary.
-    schedule(pumpEventQueue);
-
-    modifyAsset("app|foo.txt", "don't");
-    updateSources(["app|foo.txt"]);
-    check.resumeIsPrimary("app|foo.txt");
-
-    expectAsset("app|foo.txt", "don't");
-    buildShouldSucceed();
-  });
-
-  test("transforms an asset that goes from non-primary to primary "
-      "during isPrimary", () {
-    var check = new CheckContentTransformer("do", "ne");
-    initGraph({
-      "app|foo.txt": "don't"
-    }, {"app": [[check]]});
-
-    check.pauseIsPrimary("app|foo.txt");
-    updateSources(["app|foo.txt"]);
-    // Make sure we're waiting on isPrimary.
-    schedule(pumpEventQueue);
-
-    modifyAsset("app|foo.txt", "do");
-    updateSources(["app|foo.txt"]);
-    check.resumeIsPrimary("app|foo.txt");
-
-    expectAsset("app|foo.txt", "done");
-    buildShouldSucceed();
-  });
-
-  test("doesn't return an asset that's removed during another transformer's "
-      "isPrimary", () {
-    var rewrite1 = new RewriteTransformer("txt", "txt");
-    var rewrite2 = new RewriteTransformer("md", "md");
-    initGraph(["app|foo.txt", "app|foo.md"], {"app": [[rewrite1, rewrite2]]});
-
-    rewrite2.pauseIsPrimary("app|foo.md");
-    updateSources(["app|foo.txt", "app|foo.md"]);
-    // Make sure we're waiting on the correct isPrimary.
-    schedule(pumpEventQueue);
-
-    removeSources(["app|foo.txt"]);
-    rewrite2.resumeIsPrimary("app|foo.md");
-    expectNoAsset("app|foo.txt");
-    expectAsset("app|foo.md", "foo.md");
-    buildShouldSucceed();
-  });
-
-  test("doesn't transform an asset that goes from primary to non-primary "
-      "during another transformer's isPrimary", () {
-    var rewrite = new RewriteTransformer("md", "md");
-    var check = new CheckContentTransformer(new RegExp(r"^do$"), "ne");
-    initGraph({
-      "app|foo.txt": "do",
-      "app|foo.md": "foo"
-    }, {"app": [[rewrite, check]]});
-
-    rewrite.pauseIsPrimary("app|foo.md");
-    updateSources(["app|foo.txt", "app|foo.md"]);
-    // Make sure we're waiting on the correct isPrimary.
-    schedule(pumpEventQueue);
-
-    modifyAsset("app|foo.txt", "don't");
-    updateSources(["app|foo.txt"]);
-    rewrite.resumeIsPrimary("app|foo.md");
-
-    expectAsset("app|foo.txt", "don't");
-    expectAsset("app|foo.md", "foo.md");
-    buildShouldSucceed();
-  });
-
-  test("transforms an asset that goes from non-primary to primary "
-      "during another transformer's isPrimary", () {
-    var rewrite = new RewriteTransformer("md", "md");
-    var check = new CheckContentTransformer("do", "ne");
-    initGraph({
-      "app|foo.txt": "don't",
-      "app|foo.md": "foo"
-    }, {"app": [[rewrite, check]]});
-
-    rewrite.pauseIsPrimary("app|foo.md");
-    updateSources(["app|foo.txt", "app|foo.md"]);
-    // Make sure we're waiting on the correct isPrimary.
-    schedule(pumpEventQueue);
-
-    modifyAsset("app|foo.txt", "do");
-    updateSources(["app|foo.txt"]);
-    rewrite.resumeIsPrimary("app|foo.md");
-
-    expectAsset("app|foo.txt", "done");
-    expectAsset("app|foo.md", "foo.md");
-    buildShouldSucceed();
-  });
-
-  test("returns an asset even if an unrelated build is running", () {
-    initGraph([
-      "app|foo.in",
-      "app|bar.in",
-    ], {"app": [[new RewriteTransformer("in", "out")]]});
-
-    updateSources(["app|foo.in", "app|bar.in"]);
-    expectAsset("app|foo.out", "foo.out");
-    expectAsset("app|bar.out", "bar.out");
-    buildShouldSucceed();
-
-    pauseProvider();
-    modifyAsset("app|foo.in", "new");
-    updateSources(["app|foo.in"]);
-    expectAssetDoesNotComplete("app|foo.out");
-    expectAsset("app|bar.out", "bar.out");
-    buildShouldNotBeDone();
-
-    resumeProvider();
-    expectAsset("app|foo.out", "new.out");
-    buildShouldSucceed();
-  });
-
-  test("doesn't report AssetNotFound until all builds are finished", () {
-    initGraph([
-      "app|foo.in",
-    ], {"app": [[new RewriteTransformer("in", "out")]]});
-
-    updateSources(["app|foo.in"]);
-    expectAsset("app|foo.out", "foo.out");
-    buildShouldSucceed();
-
-    pauseProvider();
-    updateSources(["app|foo.in"]);
-    expectAssetDoesNotComplete("app|foo.out");
-    expectAssetDoesNotComplete("app|non-existent.out");
-    buildShouldNotBeDone();
-
-    resumeProvider();
-    expectAsset("app|foo.out", "foo.out");
-    expectNoAsset("app|non-existent.out");
-    buildShouldSucceed();
-  });
-
-  test("doesn't emit a result until all builds are finished", () {
-    var rewrite = new RewriteTransformer("txt", "out");
-    initGraph([
-      "pkg1|foo.txt",
-      "pkg2|foo.txt"
-    ], {"pkg1": [[rewrite]], "pkg2": [[rewrite]]});
-
-    // First, run both packages' transformers so both packages are successful.
-    updateSources(["pkg1|foo.txt", "pkg2|foo.txt"]);
-    expectAsset("pkg1|foo.out", "foo.out");
-    expectAsset("pkg2|foo.out", "foo.out");
-    buildShouldSucceed();
-
-    // pkg1 is still successful, but pkg2 is waiting on the provider, so the
-    // overall build shouldn't finish.
-    pauseProvider();
-    updateSources(["pkg2|foo.txt"]);
-    expectAsset("pkg1|foo.out", "foo.out");
-    buildShouldNotBeDone();
-
-    // Now that the provider is unpaused, pkg2's transforms finish and the
-    // overall build succeeds.
-    resumeProvider();
-    buildShouldSucceed();
-  });
-
-  test("one transformer takes a long time while the other finishes, then "
-      "the input is removed", () {
-    var rewrite1 = new RewriteTransformer("txt", "out1");
-    var rewrite2 = new RewriteTransformer("txt", "out2");
-    initGraph(["app|foo.txt"], {"app": [[rewrite1, rewrite2]]});
-
-    rewrite1.pauseApply();
-
-    updateSources(["app|foo.txt"]);
-
-    // Wait for rewrite1 to pause and rewrite2 to finish.
-    schedule(pumpEventQueue);
-
-    removeSources(["app|foo.txt"]);
-
-    // Make sure the removal is processed completely before we restart rewrite2.
-    schedule(pumpEventQueue);
-    rewrite1.resumeApply();
-
-    buildShouldSucceed();
-    expectNoAsset("app|foo.out1");
-    expectNoAsset("app|foo.out2");
-  });
-
-  test("a transformer in a later phase gets a slow secondary input from an "
-      "earlier phase", () {
-    var rewrite = new RewriteTransformer("in", "in");
-    initGraph({
-      "app|foo.in": "foo",
-      "app|bar.txt": "foo.in"
-    }, {"app": [
-      [rewrite],
-      [new ManyToOneTransformer("txt")]
-    ]});
-
-    rewrite.pauseApply();
-    updateSources(["app|foo.in", "app|bar.txt"]);
-    expectAssetDoesNotComplete("app|bar.out");
-
-    rewrite.resumeApply();
-    expectAsset("app|bar.out", "foo.in");
-    buildShouldSucceed();
-  });
-
-  test("materializes a passed-through asset that was emitted before it was "
-      "available", () {
-    initGraph(["app|foo.in"], {"app": [
-      [new RewriteTransformer("txt", "txt")]
-    ]});
-
-    pauseProvider();
-    updateSources(["app|foo.in"]);
-    expectAssetDoesNotComplete("app|foo.in");
-
-    resumeProvider();
-    expectAsset("app|foo.in", "foo");
-    buildShouldSucceed();
-  });
-
-  test("re-runs if the primary input is invalidated before accessing", () {
-    var transformer1 = new RewriteTransformer("txt", "mid");
-    var transformer2 = new RewriteTransformer("mid", "out");
-
-    initGraph([
-      "app|foo.txt"
-    ], {"app": [
-      [transformer1],
-      [transformer2]
-    ]});
-
-    transformer2.pausePrimaryInput();
-    updateSources(["app|foo.txt"]);
-
-    // Wait long enough to ensure that transformer1 has completed and
-    // transformer2 has started.
-    schedule(pumpEventQueue);
-
-    // Update the source again so that transformer1 invalidates the primary
-    // input of transformer2.
-    transformer1.pauseApply();
-    modifyAsset("app|foo.txt", "new foo");
-    updateSources(["app|foo.txt"]);
-
-    transformer2.resumePrimaryInput();
-    transformer1.resumeApply();
-
-    expectAsset("app|foo.out", "new foo.mid.out");
-    buildShouldSucceed();
-
-    expect(transformer1.numRuns, completion(equals(2)));
-    expect(transformer2.numRuns, completion(equals(2)));
-  });
-
-  // Regression test for issue 19038.
-  test("a secondary input that's marked dirty followed by the primary input "
-      "being synchronously marked dirty re-runs a transformer", () {
-    // Issue 19038 was caused by the following sequence of events:
-    //
-    // * Several inputs are marked dirty at once, causing dirty events to
-    //   propagate synchronously throughout the transform graph.
-    //
-    // * A transform (ManyToOneTransformer in this test case) has a secondary
-    //   input ("one.in") and a primary input ("foo.txt") that will both be
-    //   marked dirty.
-    //
-    // * The secondary input is marked dirty before the primary input. This
-    //   causes the transform to start running `apply`. Since as far as it knows
-    //   its primary input is still available, it passes that input to `apply`.
-    //
-    // * Now the primary input is marked dirty. The transform node checks to see
-    //   if this primary input has already been added to the transform
-    //   controller. This is where the bug existed: the answer to this was
-    //   incorrectly "no" until after some asynchronous processing occurred.
-    //
-    // * Since the transform thought the primary input hadn't yet been passed to
-    //   the transform controller, it didn't bother restarting the transform,
-    //   causing the old output to be preserved incorrectly.
-    initGraph({
-      "app|foo.txt": "one",
-      "app|one.in": "1",
-      "app|two.in": "2"
-    }, {"app": [
-      // We need to use CheckContentTransformer here so that
-      // ManyToOneTransformer reads its primary input from memory rather than
-      // from the filesystem. If it read from the filesystem, it might
-      // accidentally get the correct output despite accessing the incorrect
-      // asset, which would cause false positives for the test.
-      [new CheckContentTransformer(new RegExp("one|two"), ".in")],
-      [new ManyToOneTransformer("txt")]
-    ]});
-
-    updateSources(["app|foo.txt", "app|one.in", "app|two.in"]);
-    expectAsset("app|foo.out", "1");
-    buildShouldSucceed();
-
-    modifyAsset("app|foo.txt", "two");
-
-    // It's important that "one.in" come first in this list, since
-    // ManyToOneTransformer needs to see its secondary input change first.
-    updateSources(["app|one.in", "app|foo.txt"]);
-
-    expectAsset("app|foo.out", "2");
-    buildShouldSucceed();
-  });
-}