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Unified Diff: test/codegen/corelib/iterable_skip_test.dart

Issue 1945153002: Add corelib tests (Closed) Base URL: https://github.com/dart-lang/dev_compiler@master
Patch Set: error_test and range_error_test now pass Created 4 years, 7 months ago
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Index: test/codegen/corelib/iterable_skip_test.dart
diff --git a/test/codegen/corelib/iterable_skip_test.dart b/test/codegen/corelib/iterable_skip_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..59d604dbf6c5328e0b953a1ba48195e387741052
--- /dev/null
+++ b/test/codegen/corelib/iterable_skip_test.dart
@@ -0,0 +1,259 @@
+// Copyright (c) 2012, 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";
+
+main() {
+ List<int> list1 = <int>[1, 2, 3];
+ List<int> list2 = const <int>[4, 5];
+ List<String> list3 = <String>[];
+ Set<int> set1 = new Set<int>();
+ set1..add(11)
+ ..add(12)
+ ..add(13);
+ Set set2 = new Set();
+
+ Iterable<int> skip0 = list1.skip(0);
+ Expect.isTrue(skip0 is! List);
+ Iterator<int> it = skip0.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(1, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(2, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(3, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ Iterable<int> skip1 = list1.skip(1);
+ Expect.isTrue(skip1 is! List);
+ Expect.isTrue(skip1.skip(2).skip(1) is! List);
+ it = skip1.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(2, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(3, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ Iterable<int> skip2 = list1.skip(2);
+ Expect.isTrue(skip2 is! List);
+ Expect.isTrue(skip2.skip(2).skip(1) is! List);
+ it = skip2.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(3, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ Iterable<int> skip3 = list1.skip(3);
+ Expect.isTrue(skip3 is! List);
+ Expect.isTrue(skip3.skip(2).skip(1) is! List);
+ it = skip3.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ Iterable<int> skip4 = list1.skip(4);
+ Expect.isTrue(skip4 is! List);
+ Expect.isTrue(skip4.skip(2).skip(1) is! List);
+ it = skip4.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip0 = list1.skip(0);
+ skip1 = skip0.skip(1);
+ skip2 = skip1.skip(1);
+ skip3 = skip2.skip(1);
+ skip4 = skip3.skip(1);
+ it = skip0.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(1, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(2, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(3, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+ it = skip1.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(2, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(3, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+ it = skip2.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(3, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+ it = skip3.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+ it = skip4.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip0 = list2.skip(0);
+ Expect.isTrue(skip0 is! List);
+ Expect.isTrue(skip0.skip(2).skip(1) is! List);
+ it = skip0.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(4, it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(5, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip1 = list2.skip(1);
+ Expect.isTrue(skip1 is! List);
+ Expect.isTrue(skip1.skip(2).skip(1) is! List);
+ it = skip1.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.equals(5, it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip2 = list2.skip(2);
+ Expect.isTrue(skip2 is! List);
+ Expect.isTrue(skip2.skip(2).skip(1) is! List);
+ it = skip2.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip3 = list2.skip(3);
+ Expect.isTrue(skip3 is! List);
+ Expect.isTrue(skip3.skip(2).skip(1) is! List);
+ it = skip3.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ Iterable<String> skip02 = list3.skip(0);
+ Expect.isTrue(skip02 is! List);
+ Expect.isTrue(skip02.skip(2).skip(1) is! List);
+ Iterator<String> it2 = skip02.iterator;
+ Expect.isNull(it2.current);
+ Expect.isFalse(it2.moveNext());
+ Expect.isNull(it2.current);
+
+ Iterable<String> skip12 = list3.skip(1);
+ Expect.isTrue(skip12 is! List);
+ Expect.isTrue(skip12.skip(2).skip(1) is! List);
+ it2 = skip12.iterator;
+ Expect.isNull(it2.current);
+ Expect.isFalse(it2.moveNext());
+ Expect.isNull(it2.current);
+
+ skip0 = set1.skip(0);
+ List<int> copied = skip0.toList();
+ Expect.equals(3, copied.length);
+ Expect.isTrue(set1.contains(copied[0]));
+ Expect.isTrue(set1.contains(copied[1]));
+ Expect.isTrue(set1.contains(copied[2]));
+ Expect.isTrue(copied[0] != copied[1]);
+ Expect.isTrue(copied[0] != copied[2]);
+ Expect.isTrue(copied[1] != copied[2]);
+ it = skip0.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.isNotNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.isNotNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.isNotNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip1 = set1.skip(1);
+ copied = skip1.toList();
+ Expect.equals(2, copied.length);
+ Expect.isTrue(set1.contains(copied[0]));
+ Expect.isTrue(set1.contains(copied[1]));
+ Expect.isTrue(copied[0] != copied[1]);
+ it = skip1.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.isNotNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.isNotNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip2 = set1.skip(2);
+ copied = skip2.toList();
+ Expect.equals(1, copied.length);
+ Expect.isTrue(set1.contains(copied[0]));
+ it = skip2.iterator;
+ Expect.isNull(it.current);
+ Expect.isTrue(it.moveNext());
+ Expect.isNotNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip3 = set1.skip(3);
+ it = skip3.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip4 = set1.skip(4);
+ it = skip4.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip0 = set2.skip(0);
+ it = skip0.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ skip1 = set2.skip(1);
+ it = skip1.iterator;
+ Expect.isNull(it.current);
+ Expect.isFalse(it.moveNext());
+ Expect.isNull(it.current);
+
+ testSkipTake(Iterable input, int skip, int take) {
+ List expected = [];
+ Iterator iter = input.iterator;
+ for (int i = 0; i < skip; i++) iter.moveNext();
+ for (int i = 0; i < take; i++) {
+ if (!iter.moveNext()) break;
+ expected.add(iter.current);
+ }
+ Expect.listEquals(expected, input.skip(skip).take(take).toList());
+ }
+
+ List longList = [1, 4, 5, 3, 8, 11, 12, 6, 9, 10, 13, 7, 2, 14, 15];
+ Set bigSet = longList.toSet();
+
+ for (Iterable collection in [longList, longList.reversed, bigSet]) {
+ testSkipTake(collection, 0, 0);
+ testSkipTake(collection, 0, 5);
+ testSkipTake(collection, 0, 15);
+ testSkipTake(collection, 0, 25);
+ testSkipTake(collection, 5, 0);
+ testSkipTake(collection, 5, 5);
+ testSkipTake(collection, 5, 10);
+ testSkipTake(collection, 5, 20);
+ testSkipTake(collection, 15, 0);
+ testSkipTake(collection, 15, 5);
+ testSkipTake(collection, 20, 0);
+ testSkipTake(collection, 20, 5);
+ Expect.throws(() => longList.skip(-1), (e) => e is RangeError);
+ }
+}
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