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// Copyright (c) 2020, 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 "package:expect/expect.dart";
testIntIterable(iterable) {
Expect.isTrue(iterable is Iterable<int>, "${iterable.runtimeType}");
Expect.isFalse(iterable is Iterable<String>, "${iterable.runtimeType}");
}
void testIterable(Iterable<int> iterable, [int depth = 3]) {
testIntIterable(iterable);
if (depth > 0) {
testIterable(iterable.where((x) => true), depth - 1);
testIterable(iterable.skip(1), depth - 1);
testIterable(iterable.take(1), depth - 1);
testIterable(iterable.skipWhile((x) => false), depth - 1);
testIterable(iterable.takeWhile((x) => true), depth - 1);
testList(iterable.toList(growable: true), depth - 1);
testList(iterable.toList(growable: false), depth - 1);
testIterable(iterable.toSet(), depth - 1);
}
}
void testList(List<int> list, [int depth = 3]) {
testIterable(list, depth);
if (depth > 0) {
testIterable(list.getRange(0, list.length), depth - 1);
testIterable(list.reversed, depth - 1);
testMap(list.asMap(), depth - 1);
}
}
void testMap(Map<int, int> map, [int depth = 3]) {
Expect.isTrue(map is Map<int, int>);
Expect.isFalse(map is Map<int, String>);
Expect.isFalse(map is Map<String, int>);
if (depth > 0) {
testIterable(map.keys, depth - 1);
testIterable(map.values, depth - 1);
}
}