示例#1
0
  @Test
  public void testChain() throws Exception {
    io.freefair.util.function.Function<Integer, Integer> a =
        new io.freefair.util.function.Function<Integer, Integer>() {
          @Nullable
          @Override
          public Integer apply(@Nullable Integer value) {
            return value * 3;
          }
        };

    io.freefair.util.function.Function<Integer, Integer> b =
        new io.freefair.util.function.Function<Integer, Integer>() {
          @Nullable
          @Override
          public Integer apply(@Nullable Integer value) {
            return value + 3;
          }
        };

    io.freefair.util.function.Function<Integer, Integer> chain1 =
        io.freefair.util.function.Functions.chain(a, b);
    io.freefair.util.function.Function<Integer, Integer> chain2 = Functions.chain(b, a);

    for (int i = -3; i < 3; i++) {
      assertEquals((i * 3) + 3, (int) chain1.apply(i));
      assertEquals((i + 3) * 3, (int) chain2.apply(i));
    }
  }
示例#2
0
  @Test
  public void testIdentity() throws Exception {
    Collection<Object> objects = new ArrayList<>();

    objects.add("Hallo");
    objects.add(55);
    objects.add(new ArithmeticException());

    io.freefair.util.function.Function<Object, Object> identity =
        io.freefair.util.function.Functions.identity();

    for (Object obj : objects) {
      assertSame(obj, identity.apply(obj));
    }
  }