floitsch@google.com
6dcfe3ca41
Committed: https://code.google.com/p/dart/source/detail?r=17207 Reverted: https://code.google.com/p/dart/source/detail?r=17210 Review URL: https://codereview.chromium.org//11971016 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@17213 260f80e4-7a28-3924-810f-c04153c831b5
81 lines
3.2 KiB
Dart
81 lines
3.2 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library iterable_min_max_test;
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import "dart:collection";
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class C {
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final x;
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const C(this.x);
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int get hashCode => x.hashCode;
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bool operator==(var other) => other is C && x == other.x;
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}
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const inf = double.INFINITY;
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var intList = const [0, 1, -1, -5, 5, -1000, 1000, -7, 7];
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var doubleList = const [-0.0, 0.0, -1.0, 1.0, -1000.0, 1000.0, -inf, inf];
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var stringList = const ["bbb", "bba", "bab", "abb", "bbc", "bcb", "cbb", "bb"];
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var cList = const [const C(5), const C(3), const C(8),
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const C(0), const C(10), const C(6)];
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int compareC(C a, C b) => a.x.compareTo(b.x);
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testMinMax(iterable, min, max) {
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Expect.equals(min, iterable.min());
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Expect.equals(min, iterable.min(Comparable.compare));
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Expect.equals(min, IterableMixinWorkaround.min(iterable));
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Expect.equals(min, IterableMixinWorkaround.min(iterable, Comparable.compare));
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Expect.equals(max, iterable.min((a, b) => Comparable.compare(b, a)));
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Expect.equals(max, iterable.max());
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Expect.equals(max, iterable.max(Comparable.compare));
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Expect.equals(max, IterableMixinWorkaround.max(iterable));
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Expect.equals(max, IterableMixinWorkaround.max(iterable, Comparable.compare));
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Expect.equals(min, iterable.max((a, b) => Comparable.compare(b, a)));
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}
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main() {
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testMinMax(const [], null, null);
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testMinMax([], null, null);
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testMinMax(new Set(), null, null);
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testMinMax(intList, -1000, 1000); // Const list.
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testMinMax(new List.from(intList), -1000, 1000); // Non-const list.
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testMinMax(new Set.from(intList), -1000, 1000); // Set.
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testMinMax(doubleList, -inf, inf);
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testMinMax(new List.from(doubleList), -inf, inf);
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testMinMax(new Set.from(doubleList), -inf, inf);
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testMinMax(stringList, "abb", "cbb");
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testMinMax(new List.from(stringList), "abb", "cbb");
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testMinMax(new Set.from(stringList), "abb", "cbb");
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// Objects that are not Comparable.
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Expect.equals(const C(0), cList.min(compareC));
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Expect.equals(const C(0), IterableMixinWorkaround.min(cList, compareC));
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Expect.equals(const C(0), new List.from(cList).min(compareC));
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Expect.equals(const C(0), IterableMixinWorkaround.min(new List.from(cList), compareC));
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Expect.equals(const C(0), new Set.from(cList).min(compareC));
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Expect.equals(const C(0), IterableMixinWorkaround.min(new Set.from(cList), compareC));
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Expect.equals(const C(10), cList.max(compareC));
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Expect.equals(const C(10), IterableMixinWorkaround.max(cList, compareC));
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Expect.equals(const C(10), new List.from(cList).max(compareC));
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Expect.equals(const C(10), IterableMixinWorkaround.max(new List.from(cList), compareC));
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Expect.equals(const C(10), new Set.from(cList).max(compareC));
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Expect.equals(const C(10), IterableMixinWorkaround.max(new Set.from(cList), compareC));
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bool checkedMode = false;
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assert(checkedMode = true);
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Expect.throws(cList.min, (e) => checkedMode ? e is TypeError
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: e is NoSuchMethodError);
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Expect.throws(cList.max, (e) => checkedMode ? e is TypeError
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: e is NoSuchMethodError);
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}
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