Best junit code snippet using org.junit.experimental.theories.Theories.TheoryAnchor
Source: Theories.java
...229/* */ {230/* */ public void evaluate() throws Throwable {231/* */ try {232/* 232 */ statement.evaluate();233/* 233 */ Theories.TheoryAnchor.this.handleDataPointSuccess();234/* 234 */ } catch (AssumptionViolatedException e) {235/* 235 */ Theories.TheoryAnchor.this.handleAssumptionViolation(e);236/* 236 */ } catch (Throwable e) {237/* 237 */ Theories.TheoryAnchor.this.reportParameterizedError(e, complete.getArgumentStrings(Theories.TheoryAnchor.this.nullsOk()));238/* */ } 239/* */ }240/* */ };241/* */ }242/* */ 243/* */ 244/* */ 245/* */ 246/* */ protected Statement methodInvoker(FrameworkMethod method, Object test) {247/* 247 */ return Theories.TheoryAnchor.this.methodCompletesWithParameters(method, complete, test);248/* */ }249/* */ 250/* */ 251/* */ public Object createTest() throws Exception {252/* 252 */ Object[] params = complete.getConstructorArguments();253/* */ 254/* 254 */ if (!Theories.TheoryAnchor.this.nullsOk()) {255/* 255 */ Assume.assumeNotNull(params);256/* */ }257/* */ 258/* 258 */ return getTestClass().getOnlyConstructor().newInstance(params);259/* */ }260/* */ }).methodBlock(this.testMethod).evaluate();261/* */ }262/* */ 263/* */ 264/* */ private Statement methodCompletesWithParameters(final FrameworkMethod method, final Assignments complete, final Object freshInstance) {265/* 265 */ return new Statement()266/* */ {267/* */ public void evaluate() throws Throwable {268/* 268 */ Object[] values = complete.getMethodArguments();269/* */ 270/* 270 */ if (!Theories.TheoryAnchor.this.nullsOk()) {271/* 271 */ Assume.assumeNotNull(values);272/* */ }273/* */ 274/* 274 */ method.invokeExplosively(freshInstance, values);275/* */ }276/* */ };277/* */ }278/* */ 279/* */ protected void handleAssumptionViolation(AssumptionViolatedException e) {280/* 280 */ this.fInvalidParameters.add(e);281/* */ }282/* */ 283/* */ 284/* */ protected void reportParameterizedError(Throwable e, Object... params) throws Throwable {...
Source: MemoryXmlToJavaTest.java
1package be.cm.apps.playground.jaxb;23import static org.junit.Assert.assertEquals;4import static org.junit.Assert.assertNotNull;5import generated.Parameter;67import java.io.Reader;8import java.io.StringReader;910import javax.xml.bind.JAXBContext;11import javax.xml.bind.JAXBException;12import javax.xml.bind.Unmarshaller;13import javax.xml.bind.ValidationEvent;14import javax.xml.bind.ValidationEventHandler;15import javax.xml.validation.Schema;16import javax.xml.validation.SchemaFactory;1718import org.junit.experimental.theories.DataPoint;19import org.junit.experimental.theories.Theory;20import org.junit.runner.RunWith;21import org.xml.sax.SAXException;2223import be.cm.apps.playground.util.Concurrent;24import be.cm.apps.playground.util.ConcurrentJunitRunner;25import be.cm.apps.playground.util.NanoMeter;2627/**28 * JAXB example that parses an xml from memory using jaxb.29 * 30 * It uses the EclipseLink JAXB and the Sun JAXB implementations.31 * 32 * It demonstrates validating the xml using the setSchema() method.33 * 34 * It demonstrates using an EvenHandler for error handling.35 * 36 * It uses the ConcurrentJunitRunner to run the test with multiple threads.37 * 38 * It uses the DataPoint and Theory annotation to run different combinations of tests.39 * 40 * TODO: investigate the error i get when running with multiple threads sometimes i get an error -> maybe create a jira issue in eclipselink41 * (if it's eclipselink related...) org.junit.experimental.theories.internal.ParameterizedAssertionError: parseXmlString02(eclipseLinkJaxb,42 * runValidationOn) at org.junit.experimental.theories.Theories$TheoryAnchor.reportParameterizedError(Theories.java:183) at43 * org.junit.experimental.theories.Theories$TheoryAnchor$1$1.evaluate(Theories.java:138) at44 * org.junit.experimental.theories.Theories$TheoryAnchor.runWithCompleteAssignment(Theories.java:119) at45 * org.junit.experimental.theories.Theories$TheoryAnchor.runWithAssignment(Theories.java:103) at46 * org.junit.experimental.theories.Theories$TheoryAnchor.runWithIncompleteAssignment(Theories.java:112) at47 * org.junit.experimental.theories.Theories$TheoryAnchor.runWithAssignment(Theories.java:101) at48 * org.junit.experimental.theories.Theories$TheoryAnchor.runWithIncompleteAssignment(Theories.java:112) at49 * org.junit.experimental.theories.Theories$TheoryAnchor.runWithAssignment(Theories.java:101) at50 * org.junit.experimental.theories.Theories$TheoryAnchor.evaluate(Theories.java:89) at51 * org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) at52 * org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) at53 * org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) at54 * org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at55 * java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at56 * java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at57 * java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at58 * java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at59 * java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by:60 * java.lang.LinkageError: loader (instance of org/eclipse/persistence/internal/jaxb/JaxbClassLoader): attempted duplicate class definition61 * for name: "org/eclipse/persistence/jaxb/generated0" at java.lang.ClassLoader.defineClass1(Native Method) at62 * java.lang.ClassLoader.defineClass(ClassLoader.java:621) at java.lang.ClassLoader.defineClass(ClassLoader.java:466) at63 * org.eclipse.persistence.internal.jaxb.JaxbClassLoader.generateClass(JaxbClassLoader.java:108) at64 * org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateWrapperClass(MappingsGenerator.java:2427) at65 * org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateWrapperClassAndDescriptor(MappingsGenerator.java:2217) at66 * org.eclipse.persistence.jaxb.compiler.MappingsGenerator.processGlobalElements(MappingsGenerator.java:2158) at67 * org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateProject(MappingsGenerator.java:189) at68 * org.eclipse.persistence.jaxb.compiler.Generator.generateProject(Generator.java:172) at69 * org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:313) at70 * org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:245) at71 * org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:207) at72 * org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:104) at73 * org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:94) at74 * sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at75 * sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at76 * sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597)77 * at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:202) at javax.xml.bind.ContextFinder.find(ContextFinder.java:343) at78 * javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574) at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:522) at79 * be.cm.apps.playground.jaxb.MemoryJaxbTest.parseXmlString(MemoryJaxbTest.java:129) at80 * be.cm.apps.playground.jaxb.MemoryJaxbTest.parseXmlString02(MemoryJaxbTest.java:84) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native81 * Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at82 * sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597)83 * at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at84 * org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at85 * org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at86 * org.junit.experimental.theories.Theories$TheoryAnchor$2.evaluate(Theories.java:167) at87 * org.junit.experimental.theories.Theories$TheoryAnchor$1$1.evaluate(Theories.java:133) ... 20 more88 * 89 * It could be a class loading issue that is not thread safe: http://jira.codehaus.org/browse/JETTY-41890 * 91 * 92 * 93 * @author Ivan94 * 95 */96@RunWith(ConcurrentJunitRunner.class)97@Concurrent(threads = 4)98public class MemoryXmlToJavaTest {99100 private static Object lock = new Object(); // dummy object to synchronize on101102 private static final String XML_DECLARATION = "<?xml version='1.0' encoding='UTF-8'?>\n";103 private static final String XML_INPUT_STRING = XML_DECLARATION104 + "<parameter><name>PROPERTY1</name><value>VALUE1</value></parameter>";105106 private static final String XSD_PARAMETER = "parameter.xsd";107108 @DataPoint109 public static boolean runValidationOn = true;110 @DataPoint111 public static boolean runValidationOff = false;112113 @DataPoint114 public static final String ECLIPSELINK_FACTORY = "org.eclipse.persistence.jaxb.JAXBContextFactory";115116 @DataPoint117 public static final String SUN_FACTORY = "com.sun.xml.internal.bind.v2.ContextFactory";118119 /*120 * To be able to test the thread-safety i have created n number of indentical test cases.121 */122 @Theory123 public void parseXmlString00(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {124 parseXmlString(jaxbImplementation, validating);125 }126127 @Theory128 public void parseXmlString01(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {129 parseXmlString(jaxbImplementation, validating);130 }131132 @Theory133 public void parseXmlString02(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {134 parseXmlString(jaxbImplementation, validating);135 }136137 @Theory138 public void parseXmlString03(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {139 parseXmlString(jaxbImplementation, validating);140 }141142 @Theory143 public void parseXmlString04(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {144 parseXmlString(jaxbImplementation, validating);145 }146147 @Theory148 public void parseXmlString05(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {149 parseXmlString(jaxbImplementation, validating);150 }151152 @Theory153 public void parseXmlString06(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {154 parseXmlString(jaxbImplementation, validating);155 }156157 @Theory158 public void parseXmlString07(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {159 parseXmlString(jaxbImplementation, validating);160 }161162 @Theory163 public void parseXmlString08(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {164 parseXmlString(jaxbImplementation, validating);165 }166167 @Theory168 public void parseXmlString09(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {169 parseXmlString(jaxbImplementation, validating);170 }171172 @Theory173 public void parseXmlString(String jaxbImplementation, boolean validating) throws JAXBException, SAXException {174 System.setProperty("javax.xml.bind.JAXBContext", jaxbImplementation);175176 NanoMeter logger = new NanoMeter();177 logger.log("=== " + Thread.currentThread().getName());178179 // newInstance is not thread safe in eclipselink180 JAXBContext ctx;181 synchronized (lock) {182 ctx = JAXBContext.newInstance(Parameter.class);183 }184 Unmarshaller um = ctx.createUnmarshaller();185186 // we will continue processing when we encounter errors187 MyEventHandler handler = new MyEventHandler();188 um.setEventHandler(handler);189190 logger.log("created JAXBContext " + ctx.getClass().getName());191 if (validating) {192 logger.log("setting schema");193 // let's set the schema so that the marshaller validates the xml194 SchemaFactory sf = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");195 Schema schema = sf.newSchema(this.getClass().getResource(XSD_PARAMETER));196 um.setSchema(schema);197 }198199 logger.log("starting unmarshal");200 Reader stringReader = new StringReader(XML_INPUT_STRING);201 Parameter param = (Parameter) um.unmarshal(stringReader);202203 logger.log("unmarshal done");204 assertNotNull("unmarshal", param);205206 // we should have found no errors207 assertEquals(0, handler.errorCounter);208209 assertEquals("First property", "PROPERTY1", param.getName());210 assertEquals("First value", "VALUE1", param.getValue());211212 }213214 /*215 * Simple EvenHandler that count's the events.216 */217 private final class MyEventHandler implements ValidationEventHandler {218 public int errorCounter = 0;219220 public boolean handleEvent(ValidationEvent event) {221 System.err.println(event);222 errorCounter++;223 return false;224 }225 }226227}
...
Source: Theories$TheoryAnchor.java
1public class org.junit.experimental.theories.Theories$TheoryAnchor extends org.junit.runners.model.Statement {2 public org.junit.experimental.theories.Theories$TheoryAnchor(org.junit.runners.model.FrameworkMethod, org.junit.runners.model.TestClass);3 public void evaluate() throws java.lang.Throwable;4 protected void runWithAssignment(org.junit.experimental.theories.internal.Assignments) throws java.lang.Throwable;5 protected void runWithIncompleteAssignment(org.junit.experimental.theories.internal.Assignments) throws java.lang.Throwable;6 protected void runWithCompleteAssignment(org.junit.experimental.theories.internal.Assignments) throws java.lang.Throwable;7 protected void handleAssumptionViolation(org.junit.internal.AssumptionViolatedException);8 protected void reportParameterizedError(java.lang.Throwable, java.lang.Object...) throws java.lang.Throwable;9 protected void handleDataPointSuccess();10 static boolean access$000(org.junit.experimental.theories.Theories$TheoryAnchor);11 static org.junit.runners.model.Statement access$100(org.junit.experimental.theories.Theories$TheoryAnchor, org.junit.runners.model.FrameworkMethod, org.junit.experimental.theories.internal.Assignments, java.lang.Object);12}...
Source: Theories$TheoryAnchor$1.java
1class org.junit.experimental.theories.Theories$TheoryAnchor$1 extends org.junit.runners.BlockJUnit4ClassRunner {2 final org.junit.experimental.theories.internal.Assignments val$complete;3 final org.junit.experimental.theories.Theories$TheoryAnchor this$0;4 org.junit.experimental.theories.Theories$TheoryAnchor$1(org.junit.experimental.theories.Theories$TheoryAnchor, org.junit.runners.model.TestClass, org.junit.experimental.theories.internal.Assignments);5 protected void collectInitializationErrors(java.util.List<java.lang.Throwable>);6 public org.junit.runners.model.Statement methodBlock(org.junit.runners.model.FrameworkMethod);7 protected org.junit.runners.model.Statement methodInvoker(org.junit.runners.model.FrameworkMethod, java.lang.Object);8 public java.lang.Object createTest() throws java.lang.Exception;9}...
Source: Theories$TheoryAnchor$2.java
1class org.junit.experimental.theories.Theories$TheoryAnchor$2 extends org.junit.runners.model.Statement {2 final org.junit.experimental.theories.internal.Assignments val$complete;3 final org.junit.runners.model.FrameworkMethod val$method;4 final java.lang.Object val$freshInstance;5 final org.junit.experimental.theories.Theories$TheoryAnchor this$0;6 org.junit.experimental.theories.Theories$TheoryAnchor$2(org.junit.experimental.theories.Theories$TheoryAnchor, org.junit.experimental.theories.internal.Assignments, org.junit.runners.model.FrameworkMethod, java.lang.Object);7 public void evaluate() throws java.lang.Throwable;8}...
Source: Theories$TheoryAnchor$1$1.java
1class org.junit.experimental.theories.Theories$TheoryAnchor$1$1 extends org.junit.runners.model.Statement {2 final org.junit.runners.model.Statement val$statement;3 final org.junit.experimental.theories.Theories$TheoryAnchor$1 this$1;4 org.junit.experimental.theories.Theories$TheoryAnchor$1$1(org.junit.experimental.theories.Theories$TheoryAnchor$1, org.junit.runners.model.Statement);5 public void evaluate() throws java.lang.Throwable;6}...
Theories.TheoryAnchor
Using AI Code Generation
1import org.junit.experimental.theories.DataPoints;2import org.junit.experimental.theories.Theories;3import org.junit.experimental.theories.Theory;4import org.junit.runner.RunWith;5@RunWith(Theories.class)6public class TheoriesTest {7 public static int[] ints() {8 return new int[] { 1, 2, 3 };9 }10 public void testTheory(int i) {11 System.out.println("i = " + i);12 }13}
Theories.TheoryAnchor
Using AI Code Generation
1import org.junit.experimental.theories.Theories;2import org.junit.experimental.theories.Theory;3import org.junit.runner.RunWith;4@RunWith(Theories.class)5public class TheoriesTest {6 public void test(@TheoryAnchor String str) throws Exception {7 System.out.println("test: " + str);8 }9}10 Last modified 2017-6-30; size 1137 bytes11 #9 = Utf8 ()V
Theories.TheoryAnchor
Using AI Code Generation
1public class TheoryAnchorTest {2 public void testTheoryAnchor(@FromDataPoints("data") int value) {3 System.out.println("Value: " + value);4 }5 @DataPoints("data")6 public static int[] data = {10, 20, 30, 40, 50};7}
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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