8003280: Add lambda tests

Turn on lambda expression, method reference and default method support

Reviewed-by: jjg

langtools/test/tools/javac/lambda/LambdaCapture01.java

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2011, 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
+ *  basic test for capture of non-mutable locals
+ * @author  Brian Goetz
+ * @author  Maurizio Cimadamore
+ * @run main LambdaCapture01
+ */
+
+public class LambdaCapture01 {
+
+    static int assertionCount = 0;
+
+    static void assertTrue(boolean cond) {
+        assertionCount++;
+        if (!cond)
+            throw new AssertionError();
+    }
+
+    interface Tester {
+        void test();
+    }
+
+    interface TU<T, U> {
+        public T foo(U u);
+    }
+
+    public static <T, U> T exec(TU<T, U> lambda, U x) {
+        return lambda.foo(x);
+    }
+
+    public int n = 5;
+
+    //Simple local capture
+    void test1() {
+        final int N = 1;
+        int res = LambdaCapture01.<Integer,Integer>exec((Integer x) -> x + N, 3);
+        assertTrue(4 == res);
+    }
+
+    //Local capture with multiple scopes (anon class)
+    void test2() {
+        final int N = 1;
+        new Tester() {
+            public void test() {
+                final int M = 2;
+                int res = LambdaCapture01.<Integer,Integer>exec((Integer x) -> x + N + M, 3);
+                assertTrue(6 == res);
+            }
+        }.test();
+    }
+
+    //Local capture with multiple scopes (local class)
+    void test3() {
+        final int N = 1;
+        class MyTester implements Tester {
+            public void test() {
+                final int M = 2;
+                int res = LambdaCapture01.<Integer,Integer>exec((Integer x) -> x + N + M, 3);
+                assertTrue(6 == res);
+            }
+        }
+        new MyTester().test();
+    }
+
+    //access to field from enclosing scope
+    void test4() {
+        final int N = 4;
+        int res1 = LambdaCapture01.<Integer,Integer>exec((Integer x) -> x + n + N, 3);
+        assertTrue(12 == res1);
+        int res2 = LambdaCapture01.<Integer,Integer>exec((Integer x) -> x + LambdaCapture01.this.n + N, 3);
+        assertTrue(12 == res2);
+    }
+
+    public static void main(String[] args) {
+        LambdaCapture01 t = new LambdaCapture01();
+        t.test1();
+        t.test2();
+        t.test3();
+        t.test4();
+        assertTrue(assertionCount == 5);
+    }
+}