langtools/test/tools/javac/lambda/MethodReference18.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 8003280
 * @summary Add lambda tests
 *  basic test for constructor references
 * @author  Maurizio Cimadamore
 * @run main MethodReference18
 */

public class MethodReference18 {

    static void assertTrue(boolean cond) {
        assertionCount++;
        if (!cond)
            throw new AssertionError();
    }

    static int assertionCount = 0;

    MethodReference18(Object o) {
        assertTrue(true);
    }

    MethodReference18(Number n) {
        assertTrue(false);
    }

    interface SAM {
        MethodReference18 m(Object o);
    }

    static void test(SAM s, Object arg) {
        s.m(arg);
    }

    public static void main(String[] args) {
        SAM s = MethodReference18::new;
        s.m("");
        test(MethodReference18::new, "");
        assertTrue(assertionCount == 2);
    }
}