Quelle LambdaExpr01.java Sprache: JAVA

/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
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* 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.
*
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* or visit www.oracle.com if you need additional information or have any
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*/

/*
* @test
* @bug 8003280
* @summary Add lambda tests
*  basic test for simple lambda expressions in multiple scopes
* @author  Brian Goetz
* @author  Maurizio Cimadamore
* @run main LambdaExpr01
*/

public class LambdaExpr01 {

    static int assertionCount = 0;

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

    interface S_int {
        int m();
    }

    interface S_Integer {
        Integer m();
    }

    interface S_int_int {
        int m(int i);
    }

    interface S_Integer_int {
        int m(Integer i);
    }

    interface S_int_Integer {
        Integer m(int i);
    }

    interface S_Integer_Integer {
        Integer m(Integer i);
    }

    static {
        S_int s_i = ()-> 3;
        assertTrue(3 == s_i.m());
        S_Integer s_I = ()-> 3;
        assertTrue(3 == s_I.m());
        S_int_int s_i_i = (int x)-> x+1;
        assertTrue(4 == s_i_i.m(3));
        S_int_Integer s_i_I = (int x)-> x+1;
        assertTrue(4 == s_i_I.m(3));
        S_Integer_int s_I_i = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_i.m(3));
        S_Integer_Integer s_I_I = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_I.m(3));
    }

    {
        S_int s_i = ()-> 3;
        assertTrue(3 == s_i.m());
        S_Integer s_I = ()-> 3;
        assertTrue(3 == s_I.m());
        S_int_int s_i_i = (int x)-> x+1;
        assertTrue(4 == s_i_i.m(3));
        S_int_Integer s_i_I = (int x)-> x+1;
        assertTrue(4 == s_i_I.m(3));
        S_Integer_int s_I_i = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_i.m(3));
        S_Integer_Integer s_I_I = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_I.m(3));
    }

    static void test1() {
        S_int s_i = ()-> 3;
        assertTrue(3 == s_i.m());
        S_Integer s_I = ()-> 3;
        assertTrue(3 == s_I.m());
        S_int_int s_i_i = (int x)-> x+1;
        assertTrue(4 == s_i_i.m(3));
        S_int_Integer s_i_I = (int x)-> x+1;
        assertTrue(4 == s_i_I.m(3));
        S_Integer_int s_I_i = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_i.m(3));
        S_Integer_Integer s_I_I = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_I.m(3));
    }

    void test2() {
        S_int s_i = ()-> 3;
        assertTrue(3 == s_i.m());
        S_Integer s_I = ()-> 3;
        assertTrue(3 == s_I.m());
        S_int_int s_i_i = (int x)-> x+1;
        assertTrue(4 == s_i_i.m(3));
        S_int_Integer s_i_I = (int x)-> x+1;
        assertTrue(4 == s_i_I.m(3));
        S_Integer_int s_I_i = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_i.m(3));
        S_Integer_Integer s_I_I = (Integer x) -> x.intValue() + 1;
        assertTrue(4 == s_I_I.m(3));
    }

    public static void main(String[] args) {
        test1();
        new LambdaExpr01().test2();
        assertTrue(assertionCount == 24);
    }
}

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