Examples with StringStartsWith org.hamcrest.core.StringStartsWith used on opensource projects

Example 11 with StringStartsWith

use of org.hamcrest.core.StringStartsWith in project flink by apache.

the class DataStreamTest method testEnumKeyRejection.

@Test
public void testEnumKeyRejection() {
    KeySelector<Tuple2<TestEnum, String>, TestEnum> keySelector = value -> value.f0;
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
    DataStream<Tuple2<TestEnum, String>> input = env.fromElements(Tuple2.of(TestEnum.FOO, "Foo"), Tuple2.of(TestEnum.BAR, "Bar"));
    expectedException.expect(InvalidProgramException.class);
    expectedException.expectMessage(new StringStartsWith("Type " + EnumTypeInfo.of(TestEnum.class) + " cannot be used as key."));
    input.keyBy(keySelector);
}