Best junit code snippet using org.junit.runners.model.InvalidTestError
InvalidTestError
Using AI Code Generation
1import org.junit.runners.model.InvalidTestError;2import org.junit.rules.TestRule;3import org.junit.runner.Description;4import org.junit.runners.model.Statement;5public class CustomTestRule implements TestRule {6 public Statement apply(Statement base, Description description) {7 return new CustomStatement(base);8 }9}10class CustomStatement extends Statement {11 private final Statement base;12 public CustomStatement(Statement base) {13 this.base = base;14 }15 public void evaluate() throws Throwable {16 try {17 base.evaluate();18 } catch (Throwable t) {19 throw new InvalidTestError("Invalid test");20 }21 }22}23public class CustomTestRuleExample {24 public CustomTestRule rule = new CustomTestRule();25 public void test() {26 System.out.println("Running test");27 }28}29public class CustomTestRuleExample {30 public CustomTestRule rule = new CustomTestRule();31 public void test() {32 System.out.println("Running test");33 throw new RuntimeException("Error");34 }35}36 at CustomStatement.evaluate(CustomTestRuleExample.java:24)37 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)38 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)39 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)40 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)41 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)42 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)43 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)44 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)45 at org.junit.runners.ParentRunner.run(ParentRunner.java:309)46 at org.junit.runner.JUnitCore.run(JUnitCore.java:160)47 at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4I
InvalidTestError
Using AI Code Generation
1import org.junit.runners.model.InvalidTestError;2import org.junit.runner.RunWith;3import org.junit.runners.Parameterized;4import org.junit.runners.Parameterized.Parameters;5import org.junit.runners.Parameterized.Parameter;6import org.junit.Test;7import org.junit.Assert;8import java.util.Arrays;9import java.util.Collection;10@RunWith(Parameterized.class)11public class ParameterizedTest {12 @Parameter(0)13 public int number;14 @Parameter(1)15 public boolean isPrime;16 @Parameters(name = "{index}: isPrime({0}) = {1}")17 public static Collection<Object[]> data() {18 return Arrays.asList(new Object[][] {19 { 2, true },20 { 6, false },21 { 19, true },22 { 22, false },23 { 23, true }24 });25 }26 public void testPrimeNumberChecker() {27 System.out.println("Parameterized Number is : " + number);28 Assert.assertEquals(isPrime, ParameterizedTest.isPrime(number));29 }30 private static boolean isPrime(int number) {31 for (int i = 2; i < (number / 2); i++) {32 if (number % i == 0) {33 return false;34 }35 }36 return true;37 }38}39[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ parameterized ---40[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ parameterized ---41[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ parameterized ---
InvalidTestError
Using AI Code Generation
1import org.junit.runners.model.InvalidTestError;2import org.junit.Test;3import org.junit.runners.model.TestClass;4import org.junit.runners.model.InvalidTestClassError;5import org.junit.runner.RunWith;6import org.junit.runners.BlockJUnit4ClassRunner;7import org.junit.runners.Parameterized;8import org.junit.runners.Parameterized.Parameters;9import org.junit.runner.RunWith;10import org.junit.runners.Parameterized;11import org.junit.runners.Parameterized.Parameters;12import org.junit.runner.RunWith;13import org.junit.runners.Parameterized;14import org.junit.runners.Parameterized.Parameters;15import org.junit.runner.RunWith;16import org.junit.runners.Parameterized;17import org.junit.runners.Parameterized.Parameters;18import org.junit.runner.RunWith;19import org.junit.runners.Parameterized;20import org.junit.runners.Parameterized.Parameters;21import org.junit.runner.RunWith;22import org.junit.runners.Parameterized;23import org.junit.runners.Parameterized.Parameters;24import org.junit.runner.RunWith;25import org
InvalidTestError
Using AI Code Generation
1import org.junit.runners.model.InvalidTestError;2import org.junit.Test;3import org.junit.Before;4import org.junit.After;5import org.junit.runner.RunWith;6import org.junit.runners.Parameterized;7import org.junit.runners.Parameterized.Parameters;8import java.util.Collection;9import java.util.Arrays;10import java.util.ArrayList;11import java.util.List;12import org.junit.Assert;13import org.junit.runner.Result;14import org.junit.runner.JUnitCore;15import org.junit.runners.BlockJUnit4ClassRunner;16import org.junit.runners.model.InitializationError;17import org.junit.runners.model.FrameworkMethod;18import org.junit.runners.model.Statement;19import org.junit.runners.model.TestClass;20import org.junit.runners.model.FrameworkField;21import org.junit.runners.model.FrameworkMember;22import org.junit.runners.model.TestClass;23import org.junit.runners.model.Statement;24import org.junit.runners.model.FrameworkMethod;
InvalidTestError
Using AI Code Generation
1import org.junit.internal.runners.model.InvalidTestError;2public class TestRunner {3 public static void main(String[] args) {4 Result result = JUnitCore.runClasses(TestJunit1.class);5 for (Failure failure : result.getFailures()) {6 System.out.println(failure.toString());7 }8 System.out.println(result.wasSuccessful());9 }10}11org.junit.internal.runners.model.InvalidTestError: Invalid @Test method: public void com.java2novice.junit.TestJunit1.testException()12 at org.junit.internal.runners.model.ReflectiveCallable.validatePublicVoidNoArg(ReflectiveCallable.java:32)13 at org.junit.internal.runners.model.ReflectiveCallable.validatePublicVoidNoArg(ReflectiveCallable.java:26)14 at org.junit.runners.model.FrameworkMethod.validatePublicVoidNoArg(FrameworkMethod.java:129)15 at org.junit.runners.BlockJUnit4ClassRunner.validateTestMethods(BlockJUnit4ClassRunner.java:265)16 at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:262)17 at org.junit.runners.BlockJUnit4ClassRunner.validate(BlockJUnit4ClassRunner.java:241)18 at org.junit.runners.ParentRunner.<init>(ParentRunner.java:64)19 at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:70)20 at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)21 at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)22 at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)23 at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)24 at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:33)25 at org.junit.internal.requests.SortingRequest.getRunner(SortingRequest.java:33)26 at org.junit.runner.JUnitCore.run(JUnitCore.java:137)27 at org.junit.runner.JUnitCore.run(JUnitCore.java:115)28 at com.java2novice.junit.TestRunner.main(TestRunner.java:9)
InvalidTestError
Using AI Code Generation
1import org.junit.runners.model.InvalidTestError;2import org.junit.Test;3import org.junit.Assert;4public class TestClass {5 public void testMethod() throws InvalidTestError {6 }7}8 at org.junit.runners.model.FrameworkMethod.validatePublicVoidNoArg(FrameworkMethod.java:22)9 at org.junit.runners.model.FrameworkMethod.validate(FrameworkMethod.java:16)10 at org.junit.runners.BlockJUnit4ClassRunner.validateTestMethods(BlockJUnit4ClassRunner.java:205)11 at org.junit.runners.BlockJUnit4ClassRunner.validate(BlockJUnit4ClassRunner.java:195)12 at org.junit.runners.ParentRunner.<init>(ParentRunner.java:82)13 at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:52)14 at org.junit.runners.JUnit4.<init>(JUnit4.java:61)15 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)16 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)17 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)18 at java.lang.reflect.Constructor.newInstance(Constructor.java:526)19 at java.lang.Class.newInstance(Class.java:374)20 at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:10)21 at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)22 at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)23 at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)24 at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)25 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:87)26 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:69)27 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:46)28 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)29 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)30 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
JUnit 4 Expected Exception type
java: how to mock Calendar.getInstance()?
Changing names of parameterized tests
Mocking a class vs. mocking its interface
jUnit ignore @Test methods from base class
Important frameworks/tools to learn
Unit testing a Java Servlet
Meaning of delta or epsilon argument of assertEquals for double values
Different teardown for each @Test in jUnit
Best way to automagically migrate tests from JUnit 3 to JUnit 4?
There's actually an alternative to the @Test(expected=Xyz.class)
in JUnit 4.7 using Rule
and ExpectedException
In your test case you declare an ExpectedException
annotated with @Rule
, and assign it a default value of ExpectedException.none()
. Then in your test that expects an exception you replace the value with the actual expected value. The advantage of this is that without using the ugly try/catch method, you can further specify what the message within the exception was
@Rule public ExpectedException thrown= ExpectedException.none();
@Test
public void myTest() {
thrown.expect( Exception.class );
thrown.expectMessage("Init Gold must be >= 0");
rodgers = new Pirate("Dread Pirate Rodgers" , -100);
}
Using this method, you might be able to test for the message in the generic exception to be something specific.
ADDITION
Another advantage of using ExpectedException
is that you can more precisely scope the exception within the context of the test case. If you are only using @Test(expected=Xyz.class)
annotation on the test, then the Xyz exception can be thrown anywhere in the test code -- including any test setup or pre-asserts within the test method. This can lead to a false positive.
Using ExpectedException, you can defer specifying the thrown.expect(Xyz.class)
until after any setup and pre-asserts, just prior to actually invoking the method under test. Thus, you more accurately scope the exception to be thrown by the actual method invocation rather than any of the test fixture itself.
JUnit 5 NOTE:
JUnit 5 JUnit Jupiter has removed @Test(expected=...)
, @Rule
and ExpectedException
altogether. They are replaced with the new assertThrows()
, which requires the use of Java 8 and lambda syntax. ExpectedException
is still available for use in JUnit 5 through JUnit Vintage. Also JUnit Jupiter will also continue to support JUnit 4 ExpectedException
through use of the junit-jupiter-migrationsupport module, but only if you add an additional class-level annotation of @EnableRuleMigrationSupport
.
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