KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use Stopwatch class of org.junit.rules package

Best junit code snippet using org.junit.rules.Stopwatch

Source:JunitRuleTest.java

1package com.github.testframework.junit4;2import com.google.common.base.Stopwatch;3import lombok.extern.slf4j.Slf4j;4import org.apache.commons.io.FileUtils;5import org.junit.Rule;6import org.junit.Test;7import org.junit.rules.ExpectedException;8import org.junit.rules.MethodRule;9import org.junit.rules.RuleChain;10import org.junit.rules.TemporaryFolder;11import org.junit.rules.TestName;12import org.junit.rules.TestRule;13import org.junit.rules.Timeout;14import org.junit.runner.Description;15import org.junit.runner.RunWith;16import org.junit.runners.model.FrameworkMethod;17import org.junit.runners.model.Statement;18import org.springframework.boot.test.context.SpringBootTest;19import org.springframework.test.context.junit4.SpringRunner;20import java.io.File;21import java.util.concurrent.TimeUnit;22/**23 * JunitRuleTest24 *25 * @author dongdaiming(è£ä»£æ)26 * @date 2019-07-2227 * @see <a href="https://blog.csdn.net/kingmax54212008/article/details/89003076">Junit Ruleçä½¿ç¨</a>28 */29@Slf4j30@RunWith(SpringRunner.class)31@SpringBootTest32public class JunitRuleTest {33    // TemporaryFolderå¯ç¨äºå¨æµè¯æ¶çææä»¶å¹¶å¨æµè¯å®åèªå¨å é¤34    @Rule35    public TemporaryFolder temporaryFolder = new TemporaryFolder(new File("/temp/junit"));36    // TestNameå¯ä»¥è·åå°å½åæµè¯æ¹æ³çåç§°37    @Rule38    public TestName testName = new TestName();39    // Timeoutå¯ä»¥è®¾ç½®å¨å±çè¶æ¶æ¶é´40    @Rule41    public Timeout timeout = Timeout.seconds(15);42    // èªå®ä¹æ¹æ³è§å-æå°æµè¯æ¹æ³åä¸èæ¶43    @Rule44    public MethodLoggingRule methodLogger = new MethodLoggingRule();45    // ExpectedExceptionå¯ä»¥å¹éå¼å¸¸ç±»ååå¼å¸¸message46    @Rule47    public ExpectedException expectedException = ExpectedException.none();48    @Rule49    public RuleChain ruleChain = RuleChain.outerRule(new LoggingRule(3)).around(new LoggingRule(2)).around(new LoggingRule(1));50    @Test51    public void testTemporaryFolder() throws Exception {52        File file = temporaryFolder.newFile();53        log.info("file: {}", file.getAbsolutePath());54        FileUtils.writeStringToFile(file, "abc", "utf-8", true);55        log.info("read data: {}", FileUtils.readFileToString(file, "utf-8"));56        TimeUnit.SECONDS.sleep(10);57    }58    @Test59    public void testTimeout() throws InterruptedException {60        TimeUnit.SECONDS.sleep(20);61    }62    @Test63    public void testNotTimeout() throws InterruptedException {64        TimeUnit.SECONDS.sleep(1);65    }66    @Test67    public void testMethodLogRule() throws InterruptedException {68        TimeUnit.MILLISECONDS.sleep(1234);69    }70    @Test71    public void testExpectException1() {72        expectedException.expect(NumberFormatException.class);73        expectedException.expectMessage("For input string: \"a\"");74        Integer.parseInt("a");75    }76    @Test(expected = ArithmeticException.class)77    public void testExpectException2() {78        int n = 1 / 0;79    }80    @Test81    public void testRuleChain() {82    }83    @Slf4j84    private static class MethodLoggingRule implements MethodRule {85        @Override86        public Statement apply(Statement base, FrameworkMethod method, Object target) {87            String flag = target.getClass().getSimpleName() + "." + method.getName();88            return new Statement() {89                @Override90                public void evaluate() throws Throwable {91                    Stopwatch watch = Stopwatch.createStarted();92                    base.evaluate();93                    log.info("finished {}, duration: {} ms.", flag, watch.elapsed(TimeUnit.MILLISECONDS));94                }95            };96        }97    }98    @Slf4j99    private static class LoggingRule implements TestRule {100        private int priority;101        public LoggingRule(int priority) {102            this.priority = priority;103        }104        @Override105        public Statement apply(Statement base, Description description) {...

Source:Stopwatch.java

2import java.util.concurrent.TimeUnit;3import org.junit.AssumptionViolatedException;4import org.junit.runner.Description;5import org.junit.runners.model.Statement;6public abstract class Stopwatch implements TestRule {7    private final Clock clock;8    private volatile long endNanos;9    private volatile long startNanos;10    public Stopwatch() {11        this(new Clock());12    }13    Stopwatch(Clock clock2) {14        this.clock = clock2;15    }16    public long runtime(TimeUnit unit) {17        return unit.convert(getNanos(), TimeUnit.NANOSECONDS);18    }19    /* access modifiers changed from: protected */20    public void succeeded(long nanos, Description description) {21    }22    /* access modifiers changed from: protected */23    public void failed(long nanos, Throwable e, Description description) {24    }25    /* access modifiers changed from: protected */26    public void skipped(long nanos, AssumptionViolatedException e, Description description) {27    }28    /* access modifiers changed from: protected */29    public void finished(long nanos, Description description) {30    }31    /* access modifiers changed from: private */32    /* access modifiers changed from: public */33    private long getNanos() {34        if (this.startNanos != 0) {35            long currentEndNanos = this.endNanos;36            if (currentEndNanos == 0) {37                currentEndNanos = this.clock.nanoTime();38            }39            return currentEndNanos - this.startNanos;40        }41        throw new IllegalStateException("Test has not started");42    }43    /* access modifiers changed from: private */44    /* access modifiers changed from: public */45    private void starting() {46        this.startNanos = this.clock.nanoTime();47        this.endNanos = 0;48    }49    /* access modifiers changed from: private */50    /* access modifiers changed from: public */51    private void stopping() {52        this.endNanos = this.clock.nanoTime();53    }54    @Override // org.junit.rules.TestRule55    public final Statement apply(Statement base, Description description) {56        return new InternalWatcher().apply(base, description);57    }58    private class InternalWatcher extends TestWatcher {59        private InternalWatcher() {60        }61        /* access modifiers changed from: protected */62        @Override // org.junit.rules.TestWatcher63        public void starting(Description description) {64            Stopwatch.this.starting();65        }66        /* access modifiers changed from: protected */67        @Override // org.junit.rules.TestWatcher68        public void finished(Description description) {69            Stopwatch stopwatch = Stopwatch.this;70            stopwatch.finished(stopwatch.getNanos(), description);71        }72        /* access modifiers changed from: protected */73        @Override // org.junit.rules.TestWatcher74        public void succeeded(Description description) {75            Stopwatch.this.stopping();76            Stopwatch stopwatch = Stopwatch.this;77            stopwatch.succeeded(stopwatch.getNanos(), description);78        }79        /* access modifiers changed from: protected */80        @Override // org.junit.rules.TestWatcher81        public void failed(Throwable e, Description description) {82            Stopwatch.this.stopping();83            Stopwatch stopwatch = Stopwatch.this;84            stopwatch.failed(stopwatch.getNanos(), e, description);85        }86        /* access modifiers changed from: protected */87        @Override // org.junit.rules.TestWatcher88        public void skipped(AssumptionViolatedException e, Description description) {89            Stopwatch.this.stopping();90            Stopwatch stopwatch = Stopwatch.this;91            stopwatch.skipped(stopwatch.getNanos(), e, description);92        }93    }94    /* access modifiers changed from: package-private */95    public static class Clock {96        Clock() {97        }98        public long nanoTime() {99            return System.nanoTime();100        }101    }102}...

Source:CommonUnitTest.java

...16import java.util.concurrent.TimeUnit;17import org.junit.rules.TestRule;18import org.junit.rules.TestWatcher;19import org.junit.runner.Description;20import com.google.common.base.Stopwatch;21/**22 * Class providing uniform unit test functionality.23 * 24 * @author James G. Willmore25 *26 */27public class CommonUnitTest extends TestWatcher implements TestRule {28  /** The logger. */29  private static Logger logger = LoggerFactory.getLogger(CommonUnitTest.class);30  /** The test stopwatch. */31  private final Stopwatch testStopwatch = Stopwatch.createUnstarted();32  /**33   * @see org.junit.rules.TestWatcher#starting(org.junit.runner.Description)34   */35  protected void starting(Description description) {36    logger.info("===== BEGIN {} [{}] =====", description.getMethodName(),37        description.getClassName());38    testStopwatch.start();39  }40  /**41   * @see org.junit.rules.TestWatcher#finished(org.junit.runner.Description)42   */43  protected void finished(Description description) {44    testStopwatch.stop();45    long elapsed = testStopwatch.elapsed(TimeUnit.MILLISECONDS);46    logger.info("Elapsed time: {} ms", elapsed);47    logger.info("=====  END  {} [{}] =====", description.getMethodName(),48        description.getClassName());49  }50}...

Source:TimingRules.java

1package ru.javaprojects.restaurant_vote_system;2import org.junit.rules.ExternalResource;3import org.junit.rules.Stopwatch;4import org.junit.runner.Description;5import org.slf4j.Logger;6import org.slf4j.LoggerFactory;7import java.util.concurrent.TimeUnit;8public class TimingRules {9    private static final Logger log = LoggerFactory.getLogger("result");10    private static StringBuilder results = new StringBuilder();11    // http://stackoverflow.com/questions/14892125/what-is-the-best-practice-to-determine-the-execution-time-of-the-bussiness-relev12    public static final Stopwatch STOPWATCH = new Stopwatch() {13        @Override14        protected void finished(long nanos, Description description) {15            String result = String.format("%-95s %7d", description.getDisplayName(), TimeUnit.NANOSECONDS.toMillis(nanos));16            results.append(result).append('\n');17            log.info(result + " ms\n");18        }19    };20    public static final ExternalResource SUMMARY = new ExternalResource() {21        @Override22        protected void before() throws Throwable {23            results.setLength(0);24        }25        @Override26        protected void after() {...

Source:AbstractServiceTest.java

2import org.junit.ClassRule;3import org.junit.Rule;4import org.junit.rules.ExpectedException;5import org.junit.rules.ExternalResource;6import org.junit.rules.Stopwatch;7import org.junit.runner.RunWith;8import org.slf4j.bridge.SLF4JBridgeHandler;9import org.springframework.test.context.ContextConfiguration;10import org.springframework.test.context.jdbc.Sql;11import org.springframework.test.context.jdbc.SqlConfig;12import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;13import ru.kolesnikov.votingsystem.TimingRules;14@ContextConfiguration({15        "classpath:spring/spring-app.xml",16        "classpath:spring/spring-db.xml"17})18@RunWith(SpringJUnit4ClassRunner.class)19@Sql(scripts = "classpath:db/populateDB.sql", config = @SqlConfig(encoding = "UTF-8"))20public abstract class AbstractServiceTest {21    @ClassRule22    public static ExternalResource summary = TimingRules.SUMMARY;23    @Rule24    public Stopwatch stopwatch = TimingRules.STOPWATCH;25    @Rule26    public ExpectedException thrown = ExpectedException.none();27    static {28        // needed only for java.util.logging (postgres driver)29        SLF4JBridgeHandler.install();30    }31}

Source:AbstractBaseRepositoryTest.java

2import org.assertj.core.api.Assertions;3import org.junit.ClassRule;4import org.junit.Rule;5import org.junit.rules.ExternalResource;6import org.junit.rules.Stopwatch;7import org.junit.runner.RunWith;8import org.springframework.test.context.ContextConfiguration;9import org.springframework.test.context.jdbc.Sql;10import org.springframework.test.context.jdbc.SqlConfig;11import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;12import ru.javaprojects.restaurant_vote_system.TimingRules;13@ContextConfiguration({14        "classpath:spring/spring-database.xml"15})16@RunWith(SpringJUnit4ClassRunner.class)17@Sql(scripts = {"/db/init_db_hsql.sql", "/db/populate_db_with_test_data_hsql.sql"}, config = @SqlConfig(encoding = "UTF-8"))18public abstract class AbstractBaseRepositoryTest extends Assertions {19    @ClassRule20    public static ExternalResource SUMMARY = TimingRules.SUMMARY;21    @Rule22    public Stopwatch stopwatch = TimingRules.STOPWATCH;23}...

Source:BaseJobTest.java

1package ru.sber.ekvit.job;2import org.junit.ClassRule;3import org.junit.Rule;4import org.junit.rules.ExternalResource;5import org.junit.rules.Stopwatch;6import org.junit.runner.RunWith;7import org.springframework.boot.test.context.SpringBootTest;8import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;9import static org.junit.Assert.*;10@RunWith(SpringJUnit4ClassRunner.class)11@SpringBootTest12public abstract class BaseJobTest {13    @ClassRule14    public static ExternalResource SUMMARY = TimingRules.SUMMARY;15    @Rule16    public Stopwatch stopwatch = TimingRules.STOPWATCH;17}...

Source:Stopwatch$InternalWatcher.java

1class org.junit.rules.Stopwatch$InternalWatcher extends org.junit.rules.TestWatcher {2  final org.junit.rules.Stopwatch this$0;3  protected void starting(org.junit.runner.Description);4  protected void finished(org.junit.runner.Description);5  protected void succeeded(org.junit.runner.Description);6  protected void failed(java.lang.Throwable, org.junit.runner.Description);7  protected void skipped(org.junit.AssumptionViolatedException, org.junit.runner.Description);8  org.junit.rules.Stopwatch$InternalWatcher(org.junit.rules.Stopwatch, org.junit.rules.Stopwatch$1);9}...

Stopwatch

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.Stopwatch;4import org.junit.runner.Description;5import java.util.concurrent.TimeUnit;6public class StopwatchTest {7    public Stopwatch stopwatch = new Stopwatch() {8        protected void finished(long nanos, Description description) {9            System.out.println("Test " + description.getMethodName() + " took " + nanos + " nanoseconds");10        }11    };12    public void test1() throws InterruptedException {13        TimeUnit.SECONDS.sleep(1);14    }15    public void test2() throws InterruptedException {16        TimeUnit.SECONDS.sleep(2);17    }18}19import org.junit.jupiter.api.Test;20import org.junit.platform.commons.util.StopWatch;21import java.util.concurrent.TimeUnit;22public class StopwatchTest {23    public void test1() throws InterruptedException {24        StopWatch stopWatch = StopWatch.start();25        TimeUnit.SECONDS.sleep(1);26        stopWatch.stop();27        System.out.println("Test 1 took " + stopWatch.getTotalTimeMillis() + " milliseconds");28    }29    public void test2() throws InterruptedException {30        StopWatch stopWatch = StopWatch.start();31        TimeUnit.SECONDS.sleep(2);32        stopWatch.stop();33        System.out.println("Test 2 took " + stopWatch.getTotalTimeMillis() + " milliseconds");34    }35}36How to use JUnit 5 @RepeatedTest and @RepeatedTest(value = 5, name = "{displayName} {currentRepetition}/{totalRepetitions}") annotations ?

Stopwatch

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.Stopwatch;4import org.junit.runner.Description;5import java.util.concurrent.TimeUnit;6public class StopwatchTest {7    public Stopwatch stopwatch = new Stopwatch() {8        protected void finished(long nanos, Description description) {9            System.out.println(description.getDisplayName() + " took " + nanos + " nanoseconds.");10        }11    };12    public void test1() throws Exception {13        Thread.sleep(1000);14    }15    public void test2() throws Exception {16        Thread.sleep(2000);17    }18}19package com.journaldev.junit.rules;20import org.junit.Rule;21import org.junit.Test;22import org.junit.rules.Stopwatch;23import org.junit.runner.Description;24import java.util.concurrent.TimeUnit;25public class StopwatchExample {26    public Stopwatch stopwatch = new Stopwatch() {27        protected void finished(long nanos, Description description) {28            System.out.println(description.getDisplayName() + " took " + nanos / 1000000 + " milliseconds.");29        }30    };31    public void test1() throws Exception {32        Thread.sleep(1000);33    }34    public void test2() throws Exception {35        Thread.sleep(2000);36    }37}38package com.journaldev.junit.rules;39import org.junit.Rule;40import org.junit.Test;41import org.junit.rules.Stopwatch;42import org.junit.runner.Description;43import java.util.concurrent.TimeUnit;44public class StopwatchTimeoutExample {45    public Stopwatch stopwatch = new Stopwatch() {46        protected void finished(long nanos, Description description) {

Stopwatch

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.Stopwatch;4public class StopwatchTest {5    public Stopwatch stopwatch = new Stopwatch() {6        protected void succeeded(long nanos, org.junit.runner.Description description) {7            System.out.println("Test " + description.getDisplayName() + " succeeded");8        }9        protected void failed(long nanos, Throwable e, org.junit.runner.Description description) {10            System.out.println("Test " + description.getDisplayName() + " failed");11        }12        protected void finished(long nanos, org.junit.runner.Description description) {13            System.out.println("Test " + description.getDisplayName() + " finished");14        }15    };16    public void testOne() throws InterruptedException {17        Thread.sleep(1000);18    }19    public void testTwo() throws InterruptedException {20        Thread.sleep(2000);21    }22}23Test testOne() succeeded24Test testOne() finished25Test testTwo() succeeded26Test testTwo() finished27public Stopwatch stopwatch = new Stopwatch();28protected void succeeded(long nanos, Description description)29protected void failed(long nanos, Throwable e, Description description)30protected void finished(long nanos, Description description)31import org.junit.Rule;32import org.junit.Test;33import org.junit.rules.Stopwatch;34import org.junit.runner.Description;35public class StopwatchTest {36    public Stopwatch stopwatch = new Stopwatch() {37        protected void succeeded(long nanos, Description description) {38            System.out.println("Test " + description.getDisplayName() + " succeeded");39        }40        protected void failed(long nanos, Throwable e, Description description) {41            System.out.println("Test " + description.getDisplayName() + " failed");42        }43        protected void finished(long nanos, Description description) {44            System.out.println("Test " + description.getDisplayName() + " finished");45        }46    };47    public void testOne() throws InterruptedException {

Stopwatch

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.Stopwatch;4import org.junit.runner.Description;5public class TestStopwatch {6    public Stopwatch stopwatch = new Stopwatch() {7        protected void finished(long nanos, Description description) {8            System.out.println("Finished in " + nanos + " nanos");9        }10    };11    public void test() throws Exception {12        Thread.sleep(1000);13    }14}15import org.junit.Rule;16import org.junit.Test;17import org.junit.rules.Stopwatch;18import org.junit.runner.Description;19public class TestStopwatch {20    public Stopwatch stopwatch = new Stopwatch() {21        protected void finished(long nanos, Description description) {22            System.out.println("Finished in " + nanos + " nanos");23        }24    };25    public void test() throws Exception {26        Thread.sleep(1000);27    }28}29Stopwatch class of org.junit.rules package is used to measure the time taken by a test method to run. It can be used to find out the performance of a test method. It is used by creating an anonymous class of Stopwatch and overriding the finished() method. The finished() method is

Stopwatch

Using AI Code Generation

1package com.javatpoint;  2import org.junit.rules.*;  3import org.junit.runner.Description;  4import org.junit.runners.model.Statement;  5public class Stopwatch implements TestRule {  6private final Stopwatch stopwatch = new Stopwatch();  7public Statement apply(Statement base, Description description) {  8return statement(base, description);  9}  10private Statement statement(final Statement base, Description description) {  11return new Statement() {  12public void evaluate() throws Throwable {  13Stopwatch.this.before();  14try {  15base.evaluate();  16} finally {  17Stopwatch.this.after();  18}  19}  20};  21}  22protected void before() throws Throwable {  23System.out.println("before test execution");  24}  25protected void after() {  26System.out.println("after test execution");  27}  28}29package com.javatpoint;  30import org.junit.Rule;  31import org.junit.Test;  32public class TestStopwatch {  33public Stopwatch stopwatch = new Stopwatch();  34public void test1() {  35System.out.println("test1 executed");  36}  37public void test2() {  38System.out.println("test2 executed");  39}  40}

Stopwatch

Using AI Code Generation

1import org.junit.rules.Stopwatch;2import java.util.concurrent.TimeUnit;3@RunWith(Parameterized.class)4public class TestRunner {5    public Stopwatch stopwatch = new Stopwatch() {6        protected void finished(long nanos, Description description) {7            System.out.println(description.getDisplayName() + " finished in " +8                    TimeUnit.NANOSECONDS.toMillis(nanos) + " ms");9        }10    };11    public static Collection<Object[]> data() {12        return Arrays.asList(new Object[][]{13                {1, 2, 3}, {2, 3, 5}, {3, 4, 7}14        });15    }16    private int a, b, c;17    public TestRunner(int a, int b, int c) {18        this.a = a;19        this.b = b;20        this.c = c;21    }22    public void test() {23        assertEquals(c, a + b);24    }25}26test(1,2,3) finished in 0 ms27test(2,3,5) finished in 0 ms28test(3,4,7) finished in 0 ms29import org.junit.Rule;30import org.junit.Test;31import org.junit.rules.TemporaryFolder;32import java.io.File;33import java.io.IOException;34import static org.junit.Assert.assertTrue;35public class TestRunner {36    public TemporaryFolder folder = new TemporaryFolder();37    public void testUsingTempFolder() throws IOException {38        File createdFolder = folder.newFolder("newfolder");39        File createdFile = folder.newFile("myfilefile.txt");40        assertTrue(createdFolder.exists());41        assertTrue(createdFile.exists());42    }43}44import org.junit.Rule;45import org.junit.Test;46import org.junit.rules.ErrorCollector;47import static org.hamcrest.CoreMatchers.is;48import static org.hamcrest.CoreMatchers.notNullValue;49import static org.junit.Assert.assertThat;50public class TestRunner {

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.