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Unified Diff: pkg/sequence_zip/test/stream_test.dart

Issue 113883002: Create associated packages for the dart:collection and dart:async libs. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Update SDK dependency to 1.0.0 Created 7 years ago
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Index: pkg/sequence_zip/test/stream_test.dart
diff --git a/pkg/sequence_zip/test/stream_test.dart b/pkg/sequence_zip/test/stream_test.dart
deleted file mode 100644
index 2f0de8fd4c1d3e9405a15e4eb0c2a6fb58597b39..0000000000000000000000000000000000000000
--- a/pkg/sequence_zip/test/stream_test.dart
+++ /dev/null
@@ -1,231 +0,0 @@
-// 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.
-
-import "dart:async";
-import "package:sequence_zip/stream_zip.dart";
-import "package:unittest/unittest.dart";
-
-/// Create an error with the same values as [base], except that it throwsA
-/// when seeing the value [errorValue].
-Stream streamError(Stream base, int errorValue, error) {
- return base.map((x) => (x == errorValue) ? throw error : x);
-}
-
-/// Make a [Stream] from an [Iterable] by adding events to a stream controller
-/// at periodic intervals.
-Stream mks(Iterable iterable) {
- Iterator iterator = iterable.iterator;
- StreamController controller = new StreamController();
- // Some varying time between 3 and 10 ms.
- int ms = ((++ctr) * 5) % 7 + 3;
- new Timer.periodic(new Duration(milliseconds: ms), (Timer timer) {
- if (iterator.moveNext()) {
- controller.add(iterator.current);
- } else {
- controller.close();
- timer.cancel();
- }
- });
- return controller.stream;
-}
-
-/// Counter used to give varying delays for streams.
-int ctr = 0;
-
-main() {
- // Test that zipping [streams] gives the results iterated by [expectedData].
- testZip(Iterable streams, Iterable expectedData) {
- List data = [];
- Stream zip = new StreamZip(streams);
- zip.listen(data.add, onDone: expectAsync0(() {
- expect(data, equals(expectedData));
- }));
- }
-
- test("Basic", () {
- testZip([mks([1, 2, 3]), mks([4, 5, 6]), mks([7, 8, 9])],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- });
-
- test("Uneven length 1", () {
- testZip([mks([1, 2, 3, 99, 100]), mks([4, 5, 6]), mks([7, 8, 9])],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- });
-
- test("Uneven length 2", () {
- testZip([mks([1, 2, 3]), mks([4, 5, 6, 99, 100]), mks([7, 8, 9])],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- });
-
- test("Uneven length 3", () {
- testZip([mks([1, 2, 3]), mks([4, 5, 6]), mks([7, 8, 9, 99, 100])],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- });
-
- test("Uneven length 4", () {
- testZip([mks([1, 2, 3, 98]), mks([4, 5, 6]), mks([7, 8, 9, 99, 100])],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- });
-
- test("Empty 1", () {
- testZip([mks([]), mks([4, 5, 6]), mks([7, 8, 9])], []);
- });
-
- test("Empty 2", () {
- testZip([mks([1, 2, 3]), mks([]), mks([7, 8, 9])], []);
- });
-
- test("Empty 3", () {
- testZip([mks([1, 2, 3]), mks([4, 5, 6]), mks([])], []);
- });
-
- test("Empty source", () {
- testZip([], []);
- });
-
- test("Single Source", () {
- testZip([mks([1, 2, 3])], [[1], [2], [3]]);
- });
-
- test("Other-streams", () {
- Stream st1 = mks([1, 2, 3, 4, 5, 6]).where((x) => x < 4);
- Stream st2 = new Stream.periodic(const Duration(milliseconds: 5),
- (x) => x + 4).take(3);
- StreamController c = new StreamController.broadcast();
- Stream st3 = c.stream;
- testZip([st1, st2, st3],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- c..add(7)..add(8)..add(9)..close();
- });
-
- test("Error 1", () {
- expect(new StreamZip([streamError(mks([1, 2, 3]), 2, "BAD-1"),
- mks([4, 5, 6]),
- mks([7, 8, 9])]).toList(),
- throwsA(equals("BAD-1")));
- });
-
- test("Error 2", () {
- expect(new StreamZip([mks([1, 2, 3]),
- streamError(mks([4, 5, 6]), 5, "BAD-2"),
- mks([7, 8, 9])]).toList(),
- throwsA(equals("BAD-2")));
- });
-
- test("Error 3", () {
- expect(new StreamZip([mks([1, 2, 3]),
- mks([4, 5, 6]),
- streamError(mks([7, 8, 9]), 8, "BAD-3")]).toList(),
- throwsA(equals("BAD-3")));
- });
-
- test("Error at end", () {
- expect(new StreamZip([mks([1, 2, 3]),
- streamError(mks([4, 5, 6]), 6, "BAD-4"),
- mks([7, 8, 9])]).toList(),
- throwsA(equals("BAD-4")));
- });
-
- test("Error before first end", () {
- // StreamControllers' streams with no "close" called will never be done,
- // so the fourth event of the first stream is guaranteed to come first.
- expect(new StreamZip(
- [streamError(mks([1, 2, 3, 4]), 4, "BAD-5"),
- (new StreamController()..add(4)..add(5)..add(6)).stream,
- (new StreamController()..add(7)..add(8)..add(9)).stream]
- ).toList(),
- throwsA(equals("BAD-5")));
- });
-
- test("Error after first end", () {
- StreamController controller = new StreamController();
- controller..add(7)..add(8)..add(9);
- // Transformer that puts error into controller when one of the first two
- // streams have sent a done event.
- StreamTransformer trans = new StreamTransformer.fromHandlers(
- handleDone: (EventSink s) {
- Timer.run(() { controller.addError("BAD-6"); });
- s.close();
- });
- testZip([mks([1, 2, 3]).transform(trans),
- mks([4, 5, 6]).transform(trans),
- controller.stream],
- [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
- });
-
- test("Pause/Resume", () {
- var done = expectAsync0((){}); // Call to complete test.
-
- int sc1p = 0;
- StreamController c1 = new StreamController(
- onPause: () {
- sc1p++;
- },
- onResume: () {
- sc1p--;
- });
-
- int sc2p = 0;
- StreamController c2 = new StreamController(
- onPause: () {
- sc2p++;
- },
- onResume: () {
- sc2p--;
- });
- Stream zip = new StreamZip([c1.stream, c2.stream]);
-
- const ms25 = const Duration(milliseconds: 25);
-
- // StreamIterator uses pause and resume to control flow.
- StreamIterator it = new StreamIterator(zip);
-
- it.moveNext().then((hasMore) {
- expect(hasMore, isTrue);
- expect(it.current, equals([1, 2]));
- return it.moveNext();
- }).then((hasMore) {
- expect(hasMore, isTrue);
- expect(it.current, equals([3, 4]));
- c2.add(6);
- return it.moveNext();
- }).then((hasMore) {
- expect(hasMore, isTrue);
- expect(it.current, equals([5, 6]));
- new Future.delayed(ms25).then((_) { c2.add(8); });
- return it.moveNext();
- }).then((hasMore) {
- expect(hasMore, isTrue);
- expect(it.current, equals([7, 8]));
- c2.add(9);
- return it.moveNext();
- }).then((hasMore) {
- expect(hasMore, isFalse);
- done();
- });
-
- c1..add(1)..add(3)..add(5)..add(7)..close();
- c2..add(2)..add(4);
- });
-
- test("pause-resume2", () {
- var s1 = new Stream.fromIterable([0, 2, 4, 6, 8]);
- var s2 = new Stream.fromIterable([1, 3, 5, 7]);
- var sz = new StreamZip([s1, s2]);
- int ctr = 0;
- var sub;
- sub = sz.listen(expectAsync1((v) {
- expect(v, equals([ctr * 2, ctr * 2 + 1]));
- if (ctr == 1) {
- sub.pause(new Future.delayed(const Duration(milliseconds: 25)));
- } else if (ctr == 2) {
- sub.pause();
- new Future.delayed(const Duration(milliseconds: 25)).then((_) {
- sub.resume();
- });
- }
- ctr++;
- }, count: 4));
- });
-}
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