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Unified Diff: pkg/kernel/testcases/reify/reuse_type_variables_test.dart

Issue 2697873007: Merge the work on Generic Types Reification from 'dart-lang/reify' repo (Closed)
Patch Set: Get back parameter erroneously removed by previous commit Created 3 years, 10 months ago
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Index: pkg/kernel/testcases/reify/reuse_type_variables_test.dart
diff --git a/pkg/kernel/testcases/reify/reuse_type_variables_test.dart b/pkg/kernel/testcases/reify/reuse_type_variables_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..1e6cdc23f79f42d444c3d15d5113e01455eb71d1
--- /dev/null
+++ b/pkg/kernel/testcases/reify/reuse_type_variables_test.dart
@@ -0,0 +1,42 @@
+// 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.
+
+library reuse_type_variables_test;
+
+import 'test_base.dart';
+
+class X {}
+
+class Y {}
+
+class Z {}
+
+class C<T, U, V> {
+ foo() => new D<T, U, V>();
+ bar() => new E<T, U>();
+ hest() => new D<T, V, U>();
+}
+
+class D<T, U, V> {
+ baz() => new C<T, U, V>();
+}
+
+class E<T, U> {
+ qux() => new C<T, U, U>();
+}
+
+main() {
+ var c = new C<X, Y, Z>();
+ var d = c.foo();
+ expectTrue(d is D<X, Y, Z>);
+ d = c.hest();
+ expectTrue(d is! D<X, Y, Z>);
+ expectTrue(d is D<X, Z, Y>);
+ c = d.baz();
+ expectTrue(c is C<X, Z, Y>);
+ var e = c.bar();
+ expectTrue(e is E<X, Z>);
+ c = e.qux();
+ expectTrue(c is C<X, Z, Z>);
+}

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