Revert "Handle the case of Stream.take(0) better." This reverts commit 8cead4090cc0b1184a2ad552003a…

tests/lib/async/stream_take_test.dart

-// Copyright (c) 2016, 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:expect/expect.dart";
-import "package:async_helper/async_helper.dart";
-
-class A { const A(); }
-class B extends A { const B(); }
-
-/// Stream which emits an error if it's not canceled at the correct time.
-///
-/// Must be canceled after at most [maxEvents] events.
-Stream makeStream(int maxEvents) {
-  var c;
-  int event = 0;
-  bool canceled = false;
-  c = new StreamController(onListen: () {
-    new Timer.periodic(const Duration(milliseconds: 10), (t) {
-      if (canceled) {
-        t.cancel();
-        return;
-      }
-      if (event == maxEvents) {
-        c.addError("NOT CANCELED IN TIME: $maxEvents");
-        c.close();
-        t.cancel();
-      } else {
-        c.add(event++);
-      }
-    });
-  }, onCancel: () {
-    canceled = true;
-  });
-  return c.stream;
-}
-
-main() {
-  asyncStart();
-  tests().then((_) { asyncEnd(); });
-}
-
-tests() async {
-  await expectThrowsAsync(makeStream(4).take(5).toList(), "5/4");
-  await expectThrowsAsync(makeStream(0).take(1).toList(), "1/0");
-
-  Expect.listEquals([0, 1, 2, 3, 4], await makeStream(5).take(5).toList());
-
-  Expect.listEquals([0, 1, 2, 3], await makeStream(5).take(4).toList());
-
-  Expect.listEquals([0], await makeStream(5).take(1).toList());
-
-  Expect.listEquals([], await makeStream(5).take(0).toList());
-
-  Expect.listEquals([], await makeStream(0).take(0).toList());
-}
-
-Future expectThrowsAsync(Future computation, String name) {
-  return computation.then((_) {
-    Expect.fail("$name: Did not throw");
-  }, onError: (e, s){});
-}