Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use testCount method of org.junit.runner.Runner class

Best junit code snippet using org.junit.runner.Runner.testCount

Source:SingleMethodTest.java

...97	}9899	@Test public void filteringAffectsPlan() throws Exception {100		Runner runner = Request.method(OneTimeSetup.class, "one").getRunner();101		assertEquals(1, runner.testCount());102	}103104	@Test public void nonexistentMethodCreatesFailure() throws Exception {105		assertEquals(1, new JUnitCore().run(106				Request.method(OneTimeSetup.class, "thisMethodDontExist"))107				.getFailureCount());108	}109110	@Test(expected = NoTestsRemainException.class)111	public void filteringAwayEverythingThrowsException() throws NoTestsRemainException {112		Filterable runner = (Filterable) Request.aClass(OneTimeSetup.class).getRunner();113		runner.filter(new Filter() {114			@Override115			public boolean shouldRun(Description description) {116				return false;117			}118119			@Override120			public String describe() {121				return null;122			}123		});124	}125126	public static class TestOne {127		@Test public void a() {128		}129130		@Test public void b() {131		}132	}133134	public static class TestTwo {135		@Test public void a() {136		}137138		@Test public void b() {139		}140	}141142	@RunWith(Suite.class)143	@SuiteClasses( { TestOne.class, TestTwo.class })144	public static class OneTwoSuite {145	}146147	@Test public void eliminateUnnecessaryTreeBranches() throws Exception {148		Runner runner = Request.aClass(OneTwoSuite.class).filterWith(149				Description.createTestDescription(TestOne.class, "a"))150				.getRunner();151		Description description = runner.getDescription();152		assertEquals(1, description.getChildren().size());153	}154	155	public static class HasSuiteMethod {156		@Test public void a() {}157		@Test public void b() {}158		159		public static junit.framework.Test suite() {160			return new JUnit4TestAdapter(HasSuiteMethod.class);161		}162	}163	164	@Test public void classesWithSuiteMethodsAreFiltered() {165		int testCount= Request.method(HasSuiteMethod.class, "a").getRunner().getDescription().testCount();166		assertThat(testCount, is(1));167	}
...

Source:GtestComputer.java

...36            long startTimeMillis = System.currentTimeMillis();37            // Robolectric 4.3 clears testExecutionContext after running so38            // need to store data before running.39            Description desc = mRunner.getDescription();40            int testcount = mRunner.getDescription().testCount();41            mLogger.testCaseStarted(desc, testcount);42            mRunner.run(notifier);43            mLogger.testCaseFinished(desc, testcount, System.currentTimeMillis() - startTimeMillis);44        }45        @Override46        public void filter(Filter filter) throws NoTestsRemainException {47            if (mRunner instanceof Filterable) {48                ((Filterable) mRunner).filter(filter);49            }50        }51    }52    /**53     *  Returns a suite of unit tests with each class runner wrapped by a54     *  GtestSuiteRunner....

Source:TestRunner.java

...8import java.util.List;9public class TestRunner {10    public static class TestResults {11        public String className = "";12        public int testCount = 0;13        public int successCount = 0;14        public int failureCount = 0;15        public ArrayList<String> failures;16        private TestResults(String className, int testCount, int failureCount, List<Failure> failures) {17            this.className = className;18            this.testCount = testCount;19            this.successCount = testCount - failureCount;20            this.failureCount = failureCount;21            if (this.failureCount == 0) {22                return;23            }24            this.failures = new ArrayList<String>();25            for (Failure failedTest : failures) {26                this.failures.add(failedTest.getTestHeader());27            }28        }29        public boolean allPassed() {30            return successCount == testCount;31        }32        public String toString() {33            String base = String.format("%s [%d/%d]\n", this.className, this.successCount, this.testCount);34            if (failureCount > 0) {35                base += "The following test(s) failed:\n";36                for (String f : this.failures) {37                    base += String.format(" - %s\n", f);38                }39            }40            return base;41        }42    }43    public static TestResults runTest(Class tests) {44        JUnitCore runner = new JUnitCore();45        Result result = runner.run(tests);46        return new TestResults(tests.getName(),47                result.getRunCount(), result.getFailureCount(), result.getFailures());...

Source:RunnerTest.java

...8import org.junit.runner.notification.RunListener;9public class RunnerTest {10    private boolean wasRun;11    public class MyListener extends RunListener {12        int testCount;13        @Override14        public void testRunStarted(Description description) {15            this.testCount = description.testCount();16        }17    }18    public static class Example {19        @Test20        public void empty() {21        }22    }23    @Test24    public void newTestCount() {25        JUnitCore runner = new JUnitCore();26        MyListener listener = new MyListener();27        runner.addListener(listener);28        runner.run(Example.class);29        assertEquals(1, listener.testCount);30    }31    public static class ExampleTest extends TestCase {32        public void testEmpty() {33        }34    }35    @Test36    public void oldTestCount() {37        JUnitCore runner = new JUnitCore();38        MyListener listener = new MyListener();39        runner.addListener(listener);40        runner.run(ExampleTest.class);41        assertEquals(1, listener.testCount);42    }43    public static class NewExample {44        @Test45        public void empty() {46        }47    }48    @Test49    public void testFinished() {50        JUnitCore runner = new JUnitCore();51        wasRun = false;52        RunListener listener = new MyListener() {53            @Override54            public void testFinished(Description description) {55                wasRun = true;...

Source:Runner.java

...32    public abstract void run(RunNotifier notifier);33    /**34     * @return the number of tests to be run by the receiver35     */36    public int testCount() {37        return getDescription().testCount();38    }39}...

testCount

Using AI Code Generation

1import org.junit.runner.JUnitCore;2import org.junit.runner.Result;3import org.junit.runner.notification.Failure;4public class JUnitRunner {5   public static void main(String[] args) {6      Result result = JUnitCore.runClasses(JUnitRunner.class);7      for (Failure failure : result.getFailures()) {8         System.out.println(failure.toString());9      }10      System.out.println(result.wasSuccessful());11   }12}13public class JUnitRunner {14   public static void main(String[] args) {15      Result result = JUnitCore.runClasses(JUnitRunner.class);16      for (Failure failure : result.getFailures()) {17         System.out.println(failure.toString());18      }19      System.out.println(result.wasSuccessful());20   }21}22import org.junit.runner.JUnitCore;23import org.junit.runner.Result;24import org.junit.runner.notification.Failure;25public class JUnitRunner {26   public static void main(String[] args) {27      Result result = JUnitCore.runClasses(JUnitRunner.class);28      for (Failure failure : result.getFailures()) {29         System.out.println(failure.toString());30      }31      System.out.println(result.wasSuccessful());32   }33}34import org.junit.runner.JUnitCore;35import org.junit.runner.Result;36import org.junit.runner.notification.Failure;37public class JUnitRunner {38   public static void main(String[] args) {39      Result result = JUnitCore.runClasses(JUnitRunner.class);40      for (Failure failure : result.getFailures()) {41         System.out.println(failure.toString());42      }43      System.out.println(result.wasSuccessful());44   }45}46import org.junit.runner.JUnitCore;47import org.junit.runner.Result;48import org.junit.runner.notification.Failure;49public class JUnitRunner {50   public static void main(String[] args) {51      Result result = JUnitCore.runClasses(JUnitRunner.class);52      for (Failure failure : result.getFailures()) {53         System.out.println(failure.toString());54      }55      System.out.println(result.wasSuccessful());56   }57}58import org.junit.runner.JUnitCore;59import org.junit.runner.Result;60import org.junit.runner.notification.Failure;61public class JUnitRunner {62   public static void main(String[] args) {63      Result result = JUnitCore.runClasses(JUnitRunner

testCount

Using AI Code Generation

1@RunWith(Parameterized.class)2public class ParameterizedTest {3    private int expected;4    private int input1;5    private int input2;6    public ParameterizedTest(int expected, int input1, int input2) {7        this.expected = expected;8        this.input1 = input1;9        this.input2 = input2;10    }11    public static Collection<Object[]> t() {12        return Arrays.asList(new Object[][] {13            { 3, 1, 2 },14            { 4, 2, 2 },15            { 5, 3, 2 }16        });17    }18    public void testAdd() {19        assertEquals(expected, new Calculator().add(input1, input2));20    }21}22@RunWith(Parameterized.class)23public class ParameterizedTest {24    private int expected;25    private int input1;26    private int input2;27    public ParameterizedTest(int expected, int input1, int input2) {28        this.expected = expected;29        this.input1 = input1;30        this.input2 = input2;31    }32    public static Collection<Object[]> t() {33        return Arrays.asList(new Object[][] {34            { 3, 1, 2 },35            { 4, 2, 2 },36            { 5, 3, 2 }37        });38    }39    public void testAdd() {40        assertEquals(expected, new Calculator().add(input1, input2));41    }42}43@RunWith(Parameterized.class)44public class ParameterizedTest {45    private int expected;46    private int input1;47    private int input2;48    public ParameterizedTest(int expected, int input1, int input2) {49        this.expected = expected;50        this.input1 = input1;51        this.input2 = input2;52    }53    public static Collection<Object[]> t() {54        return Arrays.asList(new Object[][] {55            { 3, 1, 2 },56            { 4, 2, 2 },57            { 5, 3, 2 }58        });59    }60    public void testAdd() {61        assertEquals(expected, new Calculator().add(input1, input2));62    }63}

testCount

Using AI Code Generation

1@RunWith(Parameterized.class)2public class TestRunner {3    private final String name;4    private final String value;5    public TestRunner(String name, String value) {6        this.name = name;7        this.value = value;8    }9    public static Collection<Object[]> data() {10        return Arrays.asList(new Object[][] {11                {"test1", "value1"},12                {"test2", "value2"},13                {"test3", "value3"}14        });15    }16    public void test() {17        System.out.println("Test name: " + name);18        System.out.println("Test value: " + value);19    }20}

testCount

Using AI Code Generation

1public void testCount() {2    Result result = JUnitCore.runClasses(SampleTest.class);3    assertEquals(result.getRunCount(), 2);4}5import org.junit.runner.JUnitCore;6import org.junit.runner.Result;7import org.junit.runner.notification.Failure;8public class TestRunner {9   public static void main(String[] args) {10      Result result = JUnitCore.runClasses(TestJunit.class);11      for (Failure failure : result.getFailures()) {12         System.out.println(failure.toString());13      }14      System.out.println(result.wasSuccessful());15   }16}17import org.junit.runner.JUnitCore;18import org.junit.runner.Result;19import org.junit.runner.notification.Failure;20public class TestRunner {21   public static void main(String[] args) {22      Result result = JUnitCore.runClasses(TestJunit.class);23      for (Failure failure : result.getFailures()) {24         System.out.println(failure.toString());25      }26      System.out.println(result.wasSuccessful());27   }28}29import org.junit.runner.JUnitCore;30import org.junit.runner.Result;31import org.junit.runner.notification.Failure;32public class TestRunner {33   public static void main(String[] args) {34      Result result = JUnitCore.runClasses(TestJunit.class);35      for (Failure failure : result.getFailures()) {36         System.out.println(failure.toString());37      }38      System.out.println(result.wasSuccessful());39   }40}41import org.junit.runner.JUnitCore;42import org.junit.runner.Result;43import org.junit.runner.notification.Failure;44public class TestRunner {45   public static void main(String[] args) {46      Result result = JUnitCore.runClasses(TestJunit.class);47      for (Failure failure : result.getFailures()) {48         System.out.println(failure.toString());49      }50      System.out.println(result.wasSuccessful());51   }52}53import org.junit.runner.JUnitCore;54import org.junit.runner.Result;55import org.junit.runner.notification.Failure;56public class TestRunner {57   public static void main(String[] args) {58      Result result = JUnitCore.runClasses(TestJunit.class);59      for (Failure failure : result.getFailures()) {60         System.out.println(failure.toString());61      }62      System.out.println(result.wasSuccessful());63   }64}65import org.junit.runner.JUnitCore;66import org.junit.runner.Result;67import org.junit.runner.notification.Failure;68public class TestRunner {69   public static void main(String[] args)

testCount

Using AI Code Generation

1@RunWith(CustomRunner.class)2public class TestClass {3   public void test1() {4      assertTrue(true);5   }6   public void test2() {7      assertTrue(true);8   }9}10public class CustomRunner extends Runner {11   public CustomRunner(Class<?> klass) throws InitializationError {12      super(klass);13   }14   public Description getDescription() {15      return Description.createSuiteDescription(getTestClass().getJavaClass());16   }17   public void run(RunNotifier notifier) {18      notifier.fireTestRunStarted(getDescription());19      RunNotifier customNotifier = new RunNotifier();20      customNotifier.addListener(new RunListener() {21         public void testStarted(Description description) throws Exception {22            notifier.fireTestStarted(description);23         }24         public void testFinished(Description description) throws Exception {25            notifier.fireTestFinished(description);26         }27         public void testFailure(Failure failure) throws Exception {28            notifier.fireTestFailure(failure);29         }30         public void testAssumptionFailure(Failure failure) {31            notifier.fireTestAssumptionFailed(failure);32         }33         public void testIgnored(Description description) throws Exception {34            notifier.fireTestIgnored(description);35         }36      });37      try {38         new BlockJUnit4ClassRunner(getTestClass().getJavaClass()).run(customNotifier);39      } catch (InitializationError e) {40         e.printStackTrace();41      }42      notifier.fireTestRunFinished(new Result());43   }44   public int testCount() {45      return super.testCount();46   }47}48JUnit 4.12 API (org.junit.runner.Runner)49JUnit 4.12 API (org.junit.runner.Description)50JUnit 4.12 API (org.junit.runner.notification.RunNotifier)51JUnit 4.12 API (org.junit.runner.notification.RunListener)52JUnit 4.12 API (org.junit.runner.notification.Failure)

testCount

Using AI Code Generation

1import org.junit.runner.JUnitCore;2import org.junit.runner.Result;3import org.junit.runner.RunWith;4import org.junit.runner.notification.Failure;5public class TestRunner {6    public static void main(String[] args) {7        Result result = JUnitCore.runClasses(TestJunit.class);8        for (Failure failure : result.getFailures()) {9            System.out.println(failure.toString());10        }11        System.out.println(result.wasSuccessful());12        System.out.println("Number of test cases: " + result.getRunCount());13    }14}15Related posts: JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method JUnit Test Runner – JUnitCore.runClasses(Class<?>... classes) Method

testCount

Using AI Code Generation

1import org.junit.runner.JUnitCore;2import org.junit.runner.Result;3import org.junit.runner.notification.Failure;4public class TestRunner {5   public static void main(String[] args) {6      Result result = JUnitCore.runClasses(CountingTestRunner.class);7      System.out.println("Number of tests to be executed: " + result.getRunCount());8      for (Failure failure : result.getFailures()) {9         System.out.println(failure.toString());10      }11      System.out.println(result.wasSuccessful());12   }13}14    at CountingTestRunner.testAdd(CountingTestRunner.java:15)15    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)16    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)17    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)18    at java.lang.reflect.Method.invoke(Method.java:498)19    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)20    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)21    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)22    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)23    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)24    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)25    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)26    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)27    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)28    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)29    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

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.