test/langtools/tools/javac/lambda/LambdaExpr01.java

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 * 2 along with this work; if not, write to the Free Software Foundation,
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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);
    }
}