8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

test/langtools/tools/javac/lambda/methodReference/BridgeMethod.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2011, 2013, 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.
+ *
+ * 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.
+ */
+
+/**
+ * @test
+ * @bug 8003280
+ * @summary Add lambda tests
+ *   Test bridge methods in certain SAM conversion
+ * @compile BridgeMethod.java
+ * @run main BridgeMethod
+ */
+
+import java.lang.reflect.Method;
+import java.util.HashSet;
+import java.util.Set;
+
+public class BridgeMethod {
+
+    interface H {Object m();}
+
+    interface K<T> {void m(T t);}
+
+    interface L extends K<String> {} //generic substitution
+
+    interface M {void m(String s);}
+
+    interface KM extends K<String>, M{} //generic substitution
+
+    interface N extends H {String m();} //covariant return
+
+    private static void assertTrue(boolean cond) {
+        if (!cond)
+            throw new AssertionError();
+    }
+
+    static void bar(String s) {
+        System.out.println("BridgeMethod.bar(String) " + s);
+    }
+
+    String moo() {
+        return "moo";
+    }
+
+    private static Set<String> setOfStringObject() {
+        Set<String> s = new HashSet<>();
+        s.add("java.lang.String");
+        s.add("java.lang.Object");
+        return s;
+    }
+
+    public static void main(String[] args) {
+        L la = BridgeMethod::bar; //static reference
+        la.m("hi");
+        Class<? extends L> c1 = la.getClass();
+        Method[] methods = c1.getDeclaredMethods();
+        Set<String> types = setOfStringObject();
+        System.out.println("methods in SAM conversion of L:");
+        for(Method m : methods) {
+            System.out.println(m.toGenericString());
+            assertTrue(m.getName().equals("m"));
+            Class[] parameterTypes = m.getParameterTypes();
+            assertTrue(parameterTypes.length == 1);
+            assertTrue(types.remove(parameterTypes[0].getName()));
+        }
+        assertTrue(types.isEmpty() || (types.size() == 1 && types.contains("java.lang.String")));
+
+        KM km = BridgeMethod::bar;
+        //km.m("hi"); //will be uncommented when CR7028808 fixed
+        Class<? extends KM> c2 = km.getClass();
+        methods = c2.getDeclaredMethods();
+        types = setOfStringObject();
+        System.out.println("methods in SAM conversion of KM:");
+        for(Method m : methods) {
+            System.out.println(m.toGenericString());
+            assertTrue(m.getName().equals("m"));
+            Class<?>[] parameterTypes = m.getParameterTypes();
+            assertTrue(parameterTypes.length == 1);
+            assertTrue(types.remove(parameterTypes[0].getName()));
+        }
+        assertTrue(types.isEmpty());
+
+        N n = new BridgeMethod()::moo; //instance reference
+        assertTrue( n.m().equals("moo") );
+        assertTrue( ((H)n).m().equals("moo") );
+        Class<? extends N> c3 = n.getClass();
+        methods = c3.getDeclaredMethods();
+        types = setOfStringObject();
+        System.out.println("methods in SAM conversion of N:");
+        for(Method m : methods) {
+            System.out.println(m.toGenericString());
+            if (m.getName().equals("m")) {
+                Class<?> returnType = m.getReturnType();
+                assertTrue(types.remove(returnType.getName()));
+            }
+        }
+        assertTrue(types.size() == 1); //there's a bridge
+    }
+}