Index: test/codegen/corelib/iterable_expand_test.dart |
diff --git a/test/codegen/corelib/iterable_expand_test.dart b/test/codegen/corelib/iterable_expand_test.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..9c60541f2f41523200972ef83f8ecd1337e06204 |
--- /dev/null |
+++ b/test/codegen/corelib/iterable_expand_test.dart |
@@ -0,0 +1,67 @@ |
+// 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 "package:expect/expect.dart"; |
+import 'dart:collection'; |
+ |
+class MyList extends ListBase { |
+ List list; |
+ MyList(this.list); |
+ |
+ get length => list.length; |
+ set length(val) { list.length = val; } |
+ |
+ operator [](index) => list[index]; |
+ operator []=(index, val) => list[index] = val; |
+ |
+ String toString() => "[" + join(", ") + "]"; |
+} |
+ |
+ |
+main() { |
+ test(expectation, iterable) { |
+ Expect.listEquals(expectation, iterable.toList()); |
+ } |
+ |
+ // Function not called on empty iterable. |
+ test([], [].expand((x) { throw "not called"; })); |
+ |
+ // Creating the iterable doesn't call the function. |
+ [1].expand((x) { throw "not called"; }); |
+ |
+ test([1], [1].expand((x) => [x])); |
+ test([1, 2, 3], [1, 2, 3].expand((x) => [x])); |
+ |
+ test([], [1].expand((x) => [])); |
+ test([], [1, 2, 3].expand((x) => [])); |
+ test([2], [1, 2, 3].expand((x) => x == 2 ? [2] : [])); |
+ |
+ test([1, 1, 2, 2, 3, 3], [1, 2, 3].expand((x) => [x, x])); |
+ test([1, 1, 2], [1, 2, 3].expand((x) => [x, x, x].skip(x))); |
+ |
+ test([1], new MyList([1]).expand((x) => [x])); |
+ test([1, 2, 3], new MyList([1, 2, 3]).expand((x) => [x])); |
+ |
+ test([], new MyList([1]).expand((x) => [])); |
+ test([], new MyList([1, 2, 3]).expand((x) => [])); |
+ test([2], new MyList([1, 2, 3]).expand((x) => x == 2 ? [2] : [])); |
+ |
+ test([1, 1, 2, 2, 3, 3], new MyList([1, 2, 3]).expand((x) => [x, x])); |
+ test([1, 1, 2], new MyList([1, 2, 3]).expand((x) => [x, x, x].skip(x))); |
+ |
+ // if function throws, iteration is stopped. |
+ Iterable iterable = [1, 2, 3].expand((x) { |
+ if (x == 2) throw "FAIL"; |
+ return [x, x]; |
+ }); |
+ Iterator it = iterable.iterator; |
+ Expect.isTrue(it.moveNext()); |
+ Expect.equals(1, it.current); |
+ Expect.isTrue(it.moveNext()); |
+ Expect.equals(1, it.current); |
+ Expect.throws(it.moveNext, (e) => e == "FAIL"); |
+ // After throwing, iteration is ended. |
+ Expect.equals(null, it.current); |
+ Expect.isFalse(it.moveNext()); |
+} |