LambdaConv09.java revision 1414:01c9d4161882 
1/*
2 * @test /nodynamiccopyright/
3 * @bug 8003280
4 * @summary Add lambda tests
5 *  check that SAM conversion handles Object members correctly
6 * @author  Alex Buckley
7 * @author  Maurizio Cimadamore
8 * @compile/fail/ref=LambdaConv09.out -XDrawDiagnostics LambdaConv09.java
9 */
10
11class LambdaConv09 {
12
13    // Not a SAM type; not enough abstract methods
14    interface Foo1 {}
15
16    // SAM type; Foo has no abstract methods
17    interface Foo2 { boolean equals(Object object); }
18
19
20    // Not a SAM type; Foo still has no abstract methods
21    interface Foo3 extends Foo2 { public abstract String toString(); }
22
23    // SAM type; Bar has one abstract non-Object method
24    interface Foo4<T> extends Foo2 { int compare(T o1, T o2); }
25
26    // Not a SAM type; still no valid abstract methods
27    interface Foo5 {
28        boolean equals(Object object);
29        String toString();
30    }
31
32    // SAM type; Foo6 has one abstract non-Object method
33    interface Foo6<T> {
34        boolean equals(Object obj);
35        int compare(T o1, T o2);
36    }
37
38    // SAM type; Foo6 has one abstract non-Object method
39    interface Foo7<T> extends Foo2, Foo6<T> { }
40
41    void test() {
42        Foo1 f1 = ()-> { };
43        Foo2 f2 = ()-> { };
44        Foo3 f3 = x -> true;
45        Foo4 f4 = (x, y) -> 1;
46        Foo5 f5 = x -> true;
47        Foo6 f6 = (x, y) -> 1;
48        Foo7 f7 = (x, y) -> 1;
49    }
50}
51