Examples with KStreamTestDriver org.apache.kafka.test.KStreamTestDriver used on opensource projects

Example 66 with KStreamTestDriver

use of org.apache.kafka.test.KStreamTestDriver in project kafka by apache.

the class KTableKTableLeftJoinTest method testNotSendingOldValue.

@Test
public void testNotSendingOldValue() throws Exception {
    final KStreamBuilder builder = new KStreamBuilder();
    final int[] expectedKeys = new int[] { 0, 1, 2, 3 };
    final KTable<Integer, String> table1;
    final KTable<Integer, String> table2;
    final KTable<Integer, String> joined;
    final MockProcessorSupplier<Integer, String> proc;
    table1 = builder.table(intSerde, stringSerde, topic1, storeName1);
    table2 = builder.table(intSerde, stringSerde, topic2, storeName2);
    joined = table1.leftJoin(table2, MockValueJoiner.TOSTRING_JOINER);
    proc = new MockProcessorSupplier<>();
    builder.addProcessor("proc", proc, ((KTableImpl<?, ?, ?>) joined).name);
    driver = new KStreamTestDriver(builder, stateDir);
    driver.setTime(0L);
    assertTrue(((KTableImpl<?, ?, ?>) table1).sendingOldValueEnabled());
    assertFalse(((KTableImpl<?, ?, ?>) table2).sendingOldValueEnabled());
    assertFalse(((KTableImpl<?, ?, ?>) joined).sendingOldValueEnabled());
    for (int i = 0; i < 2; i++) {
        driver.process(topic1, expectedKeys[i], "X" + expectedKeys[i]);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(X0+null<-null)", "1:(X1+null<-null)");
    for (int i = 0; i < 2; i++) {
        driver.process(topic2, expectedKeys[i], "Y" + expectedKeys[i]);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(X0+Y0<-null)", "1:(X1+Y1<-null)");
    for (int expectedKey : expectedKeys) {
        driver.process(topic1, expectedKey, "X" + expectedKey);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(X0+Y0<-null)", "1:(X1+Y1<-null)", "2:(X2+null<-null)", "3:(X3+null<-null)");
    // push all items to the other stream. this should produce four items.
    for (int expectedKey : expectedKeys) {
        driver.process(topic2, expectedKey, "YY" + expectedKey);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(X0+YY0<-null)", "1:(X1+YY1<-null)", "2:(X2+YY2<-null)", "3:(X3+YY3<-null)");
    for (int expectedKey : expectedKeys) {
        driver.process(topic1, expectedKey, "X" + expectedKey);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(X0+YY0<-null)", "1:(X1+YY1<-null)", "2:(X2+YY2<-null)", "3:(X3+YY3<-null)");
    for (int i = 0; i < 2; i++) {
        driver.process(topic2, expectedKeys[i], null);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(X0+null<-null)", "1:(X1+null<-null)");
    for (int expectedKey : expectedKeys) {
        driver.process(topic1, expectedKey, "XX" + expectedKey);
    }
    driver.flushState();
    proc.checkAndClearProcessResult("0:(XX0+null<-null)", "1:(XX1+null<-null)", "2:(XX2+YY2<-null)", "3:(XX3+YY3<-null)");
}

Example 67 with KStreamTestDriver

use of org.apache.kafka.test.KStreamTestDriver in project kafka by apache.

the class KTableKTableOuterJoinTest method testJoin.

@Test
public void testJoin() throws Exception {
    KStreamBuilder builder = new KStreamBuilder();
    final int[] expectedKeys = new int[] { 0, 1, 2, 3 };
    KTable<Integer, String> table1;
    KTable<Integer, String> table2;
    KTable<Integer, String> joined;
    MockProcessorSupplier<Integer, String> processor;
    processor = new MockProcessorSupplier<>();
    table1 = builder.table(intSerde, stringSerde, topic1, storeName1);
    table2 = builder.table(intSerde, stringSerde, topic2, storeName2);
    joined = table1.outerJoin(table2, MockValueJoiner.TOSTRING_JOINER);
    joined.toStream().process(processor);
    Collection<Set<String>> copartitionGroups = builder.copartitionGroups();
    assertEquals(1, copartitionGroups.size());
    assertEquals(new HashSet<>(Arrays.asList(topic1, topic2)), copartitionGroups.iterator().next());
    KTableValueGetterSupplier<Integer, String> getterSupplier = ((KTableImpl<Integer, String, String>) joined).valueGetterSupplier();
    driver = new KStreamTestDriver(builder, stateDir);
    KTableValueGetter<Integer, String> getter = getterSupplier.get();
    getter.init(driver.context());
    for (int i = 0; i < 2; i++) {
        driver.process(topic1, expectedKeys[i], "X" + expectedKeys[i]);
    }
    // pass tuple with null key, it will be discarded in join process
    driver.process(topic1, null, "SomeVal");
    driver.flushState();
    processor.checkAndClearProcessResult("0:X0+null", "1:X1+null");
    checkJoinedValues(getter, kv(0, "X0+null"), kv(1, "X1+null"), kv(2, null), kv(3, null));
    for (int i = 0; i < 2; i++) {
        driver.process(topic2, expectedKeys[i], "Y" + expectedKeys[i]);
    }
    // pass tuple with null key, it will be discarded in join process
    driver.process(topic2, null, "AnotherVal");
    driver.flushState();
    processor.checkAndClearProcessResult("0:X0+Y0", "1:X1+Y1");
    checkJoinedValues(getter, kv(0, "X0+Y0"), kv(1, "X1+Y1"), kv(2, null), kv(3, null));
    for (int expectedKey : expectedKeys) {
        driver.process(topic1, expectedKey, "X" + expectedKey);
    }
    driver.flushState();
    processor.checkAndClearProcessResult("0:X0+Y0", "1:X1+Y1", "2:X2+null", "3:X3+null");
    checkJoinedValues(getter, kv(0, "X0+Y0"), kv(1, "X1+Y1"), kv(2, "X2+null"), kv(3, "X3+null"));
    // push all items to the other stream. this should produce four items.
    for (int expectedKey : expectedKeys) {
        driver.process(topic2, expectedKey, "YY" + expectedKey);
    }
    driver.flushState();
    processor.checkAndClearProcessResult("0:X0+YY0", "1:X1+YY1", "2:X2+YY2", "3:X3+YY3");
    checkJoinedValues(getter, kv(0, "X0+YY0"), kv(1, "X1+YY1"), kv(2, "X2+YY2"), kv(3, "X3+YY3"));
    for (int expectedKey : expectedKeys) {
        driver.process(topic1, expectedKey, "X" + expectedKey);
    }
    driver.flushState();
    processor.checkAndClearProcessResult("0:X0+YY0", "1:X1+YY1", "2:X2+YY2", "3:X3+YY3");
    checkJoinedValues(getter, kv(0, "X0+YY0"), kv(1, "X1+YY1"), kv(2, "X2+YY2"), kv(3, "X3+YY3"));
    for (int i = 0; i < 2; i++) {
        driver.process(topic2, expectedKeys[i], null);
    }
    driver.flushState();
    processor.checkAndClearProcessResult("0:X0+null", "1:X1+null");
    checkJoinedValues(getter, kv(0, "X0+null"), kv(1, "X1+null"), kv(2, "X2+YY2"), kv(3, "X3+YY3"));
    for (int expectedKey : expectedKeys) {
        driver.process(topic1, expectedKey, "XX" + expectedKey);
    }
    driver.flushState();
    processor.checkAndClearProcessResult("0:XX0+null", "1:XX1+null", "2:XX2+YY2", "3:XX3+YY3");
    checkJoinedValues(getter, kv(0, "XX0+null"), kv(1, "XX1+null"), kv(2, "XX2+YY2"), kv(3, "XX3+YY3"));
    for (int i = 1; i < 3; i++) {
        driver.process(topic1, expectedKeys[i], null);
    }
    driver.flushState();
    processor.checkAndClearProcessResult("1:null", "2:null+YY2");
    checkJoinedValues(getter, kv(0, "XX0+null"), kv(1, null), kv(2, "null+YY2"), kv(3, "XX3+YY3"));
}

Example 68 with KStreamTestDriver

use of org.apache.kafka.test.KStreamTestDriver in project kafka by apache.

the class KTableMapKeysTest method testMapKeysConvertingToStream.

@Test
public void testMapKeysConvertingToStream() {
    final KStreamBuilder builder = new KStreamBuilder();
    String topic1 = "topic_map_keys";
    KTable<Integer, String> table1 = builder.table(integerSerde, stringSerde, topic1, "anyStoreName");
    final Map<Integer, String> keyMap = new HashMap<>();
    keyMap.put(1, "ONE");
    keyMap.put(2, "TWO");
    keyMap.put(3, "THREE");
    KeyValueMapper<Integer, String, String> keyMapper = new KeyValueMapper<Integer, String, String>() {

        @Override
        public String apply(Integer key, String value) {
            return keyMap.get(key);
        }
    };
    KStream<String, String> convertedStream = table1.toStream(keyMapper);
    final String[] expected = new String[] { "ONE:V_ONE", "TWO:V_TWO", "THREE:V_THREE" };
    final int[] originalKeys = new int[] { 1, 2, 3 };
    final String[] values = new String[] { "V_ONE", "V_TWO", "V_THREE" };
    MockProcessorSupplier<String, String> processor = new MockProcessorSupplier<>();
    convertedStream.process(processor);
    driver = new KStreamTestDriver(builder, stateDir);
    for (int i = 0; i < originalKeys.length; i++) {
        driver.process(topic1, originalKeys[i], values[i]);
    }
    driver.flushState();
    assertEquals(3, processor.processed.size());
    for (int i = 0; i < expected.length; i++) {
        assertEquals(expected[i], processor.processed.get(i));
    }
}

Example 69 with KStreamTestDriver

use of org.apache.kafka.test.KStreamTestDriver in project kafka by apache.

the class KTableMapValuesTest method testSendingOldValue.

@Test
public void testSendingOldValue() throws IOException {
    KStreamBuilder builder = new KStreamBuilder();
    String topic1 = "topic1";
    KTableImpl<String, String, String> table1 = (KTableImpl<String, String, String>) builder.table(stringSerde, stringSerde, topic1, "anyStoreName");
    KTableImpl<String, String, Integer> table2 = (KTableImpl<String, String, Integer>) table1.mapValues(new ValueMapper<String, Integer>() {

        @Override
        public Integer apply(String value) {
            return new Integer(value);
        }
    });
    table2.enableSendingOldValues();
    MockProcessorSupplier<String, Integer> proc = new MockProcessorSupplier<>();
    builder.addProcessor("proc", proc, table2.name);
    driver = new KStreamTestDriver(builder, stateDir, null, null);
    assertTrue(table1.sendingOldValueEnabled());
    assertTrue(table2.sendingOldValueEnabled());
    driver.process(topic1, "A", "01");
    driver.process(topic1, "B", "01");
    driver.process(topic1, "C", "01");
    driver.flushState();
    proc.checkAndClearProcessResult("A:(1<-null)", "B:(1<-null)", "C:(1<-null)");
    driver.process(topic1, "A", "02");
    driver.process(topic1, "B", "02");
    driver.flushState();
    proc.checkAndClearProcessResult("A:(2<-1)", "B:(2<-1)");
    driver.process(topic1, "A", "03");
    driver.flushState();
    proc.checkAndClearProcessResult("A:(3<-2)");
    driver.process(topic1, "A", null);
    driver.flushState();
    proc.checkAndClearProcessResult("A:(null<-3)");
}

Example 70 with KStreamTestDriver

use of org.apache.kafka.test.KStreamTestDriver in project kafka by apache.

the class KeyValuePrinterProcessorTest method testPrintKeyValueWithProvidedSerde.

@Test
public void testPrintKeyValueWithProvidedSerde() throws Exception {
    Serde<MockObject> mockObjectSerde = Serdes.serdeFrom(new MockSerializer(), new MockDeserializer());
    KeyValuePrinter<String, MockObject> keyValuePrinter = new KeyValuePrinter<>(printStream, stringSerde, mockObjectSerde, null);
    KStream<String, MockObject> stream = builder.stream(stringSerde, mockObjectSerde, topicName);
    stream.process(keyValuePrinter);
    driver = new KStreamTestDriver(builder);
    String suppliedKey = null;
    byte[] suppliedValue = "{\"name\":\"print\", \"label\":\"test\"}".getBytes(Charset.forName("UTF-8"));
    driver.process(topicName, suppliedKey, suppliedValue);
    String expectedPrintedValue = "[null]: null , name:print label:test";
    String capturedValue = new String(baos.toByteArray(), Charset.forName("UTF-8")).trim();
    assertEquals(capturedValue, expectedPrintedValue);
}