Java TestUtils.randomString方法代码示例

import org.apache.kafka.test.TestUtils; //导入方法依赖的package包/类
public static void checkClientConnection(Selector selector, String node, int minMessageSize, int messageCount) throws Exception {

        waitForChannelReady(selector, node);
        String prefix = TestUtils.randomString(minMessageSize);
        int requests = 0;
        int responses = 0;
        selector.send(new NetworkSend(node, ByteBuffer.wrap((prefix + "-0").getBytes())));
        requests++;
        while (responses < messageCount) {
            selector.poll(0L);
            assertEquals("No disconnects should have occurred.", 0, selector.disconnected().size());

            for (NetworkReceive receive : selector.completedReceives()) {
                assertEquals(prefix + "-" + responses, new String(Utils.toArray(receive.payload())));
                responses++;
            }

            for (int i = 0; i < selector.completedSends().size() && requests < messageCount && selector.isChannelReady(node); i++, requests++) {
                selector.send(new NetworkSend(node, ByteBuffer.wrap((prefix + "-" + requests).getBytes())));
            }
        }
    }
 

import org.apache.kafka.test.TestUtils; //导入方法依赖的package包/类
@Test
public void shouldAcceptValidTopicNames() {
    String maxLengthString = TestUtils.randomString(249);
    String[] validTopicNames = {"valid", "TOPIC", "nAmEs", "ar6", "VaL1d", "_0-9_.", "...", maxLengthString};

    for (String topicName : validTopicNames) {
        Topic.validate(topicName);
    }
}
 

import org.apache.kafka.test.TestUtils; //导入方法依赖的package包/类
/**
 * Tests that time spent on the network thread is accumulated on each channel
 */
@Test
public void testNetworkThreadTimeRecorded() throws Exception {
    selector.close();
    this.selector = new Selector(NetworkReceive.UNLIMITED, 5000, new Metrics(), Time.SYSTEM,
            "MetricGroup", new HashMap<String, String>(), false, true, channelBuilder);

    String node = "0";
    server = createEchoServer(SecurityProtocol.SSL);
    InetSocketAddress addr = new InetSocketAddress("localhost", server.port());
    selector.connect(node, addr, BUFFER_SIZE, BUFFER_SIZE);

    String message = TestUtils.randomString(10 * 1024);
    NetworkTestUtils.waitForChannelReady(selector, node);
    KafkaChannel channel = selector.channel(node);
    assertTrue("SSL handshake time not recorded", channel.getAndResetNetworkThreadTimeNanos() > 0);
    assertEquals("Time not reset", 0, channel.getAndResetNetworkThreadTimeNanos());

    selector.mute(node);
    selector.send(new NetworkSend(node, ByteBuffer.wrap(message.getBytes())));
    while (selector.completedSends().isEmpty()) {
        selector.poll(100L);
    }
    assertTrue("Send time not recorded", channel.getAndResetNetworkThreadTimeNanos() > 0);
    assertEquals("Time not reset", 0, channel.getAndResetNetworkThreadTimeNanos());

    selector.unmute(node);
    while (selector.completedReceives().isEmpty()) {
        selector.poll(100L);
    }
    assertTrue("Receive time not recorded", channel.getAndResetNetworkThreadTimeNanos() > 0);
}
 

import org.apache.kafka.test.TestUtils; //导入方法依赖的package包/类
/**
 * Validate that we can send and receive a message larger than the receive and send buffer size
 */
@Test
public void testSendLargeRequest() throws Exception {
    String node = "0";
    blockingConnect(node);
    String big = TestUtils.randomString(10 * BUFFER_SIZE);
    assertEquals(big, blockingRequest(node, big));
}
 

import org.apache.kafka.test.TestUtils; //导入方法依赖的package包/类
@Test
public void testLargeMessageSequence() throws Exception {
    int bufferSize = 512 * 1024;
    String node = "0";
    int reqs = 50;
    InetSocketAddress addr = new InetSocketAddress("localhost", server.port);
    connect(node, addr);
    String requestPrefix = TestUtils.randomString(bufferSize);
    sendAndReceive(node, requestPrefix, 0, reqs);
}
 

import org.apache.kafka.test.TestUtils; //导入方法依赖的package包/类
@Before
public void before() {
    stateDir = new File(TestUtils.IO_TMP_DIR, TestUtils.randomString(5));
    directory = new StateDirectory(applicationId, stateDir.getPath(), time);
    appDir = new File(stateDir, applicationId);
}