changeset 8923:d08a60ab7ad0

New test for bridges in interfaces
author briangoetz
date Mon, 01 Jul 2013 15:29:56 -0400
parents 2ac2af0cc67c
children 7b87adcb45cf
files test-ng/tests/lambda/TestInterfaceBridges.java
diffstat 1 files changed, 76 insertions(+), 0 deletions(-) [+]
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-ng/tests/lambda/TestInterfaceBridges.java	Mon Jul 01 15:29:56 2013 -0400
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package lambda;
+
+import org.testng.annotations.Test;
+
+import static org.testng.Assert.assertEquals;
+
+/**
+ * TestInterfaceBridges
+ *
+ * @author Brian Goetz
+ */
+@Test
+public class TestInterfaceBridges {
+    public void testCovariantOverrideLambda() {
+        B b = () -> "Foo";
+        assertEquals("Foo", b.make());
+        assertEquals("Foo", ((A) b).make());
+    }
+
+    public void testCovariantOverrideIC() {
+        B b = new B() {
+            @Override
+            public String make() {
+                return "Foo";
+            }
+        };
+        assertEquals("Foo", b.make());
+        assertEquals("Foo", ((A) b).make());
+    }
+
+    public static interface A {
+        Object make();
+    }
+
+    public static interface B extends A {
+        String make();
+    }
+
+    public void testCovariantMerge() {
+        D d = () -> "Foo";
+        assertEquals("Foo", d.make());
+        assertEquals("Foo", ((A) d).make());
+        assertEquals("Foo", ((C) d).make());
+    }
+
+    public static interface C {
+        String make();
+    }
+
+    public static interface D extends A, C {
+    }
+}