Best junit code snippet using org.junit.runners.model.FrameworkField
Source: Java8TestClass.java
...17 * See the License for the specific language governing permissions and18 * limitations under the License.19 * ââ£20 */21import org.junit.runners.model.FrameworkField;22import org.junit.runners.model.FrameworkMethod;23import org.junit.runners.model.TestClass;24import java.lang.annotation.Annotation;25import java.lang.reflect.Constructor;26import java.lang.reflect.Field;27import java.lang.reflect.InvocationTargetException;28import java.lang.reflect.Method;29import java.util.ArrayList;30import java.util.Arrays;31import java.util.List;32import java.util.Map;33import static java.util.Comparator.comparing;34public class Java8TestClass extends TestClass {35 public Java8TestClass(final Class<?> type) {36 super(type);37 }38 private Class<?> getType() {39 try {40 final Field field = TestClass.class.getDeclaredField("clazz");41 field.setAccessible(true);42 return (Class<?>) field.get(this);43 } catch (IllegalAccessException | NoSuchFieldException e) {44 throw new AssertionError(e);45 }46 }47 @Override48 protected void scanAnnotatedMembers(final Map<Class<? extends Annotation>, List<FrameworkMethod>> methodsForAnnotations,49 final Map<Class<? extends Annotation>, List<FrameworkField>> fieldsForAnnotations) {50 final Class<?> type = getType();51 for (final Method eachMethod : type.getMethods()) {52 addToAnnotationLists(new FrameworkMethod(eachMethod), methodsForAnnotations);53 }54 // ensuring fields are sorted to make sure that entries are inserted55 // and read from fieldForAnnotations in a deterministic order56 for (final Field eachField : getSortedDeclaredFields(type)) {57 addToAnnotationLists(newFrameworkField(eachField), fieldsForAnnotations);58 }59 }60 private Method[] getDeclaredMethods(final Class<?> clazz) {61 return clazz.getMethods();62 }63 private FrameworkField newFrameworkField(final Field eachField) {64 try {65 final Constructor<FrameworkField> constructor = FrameworkField.class.getDeclaredConstructor(Field.class);66 constructor.setAccessible(true);67 return constructor.newInstance(eachField);68 } catch (final NoSuchMethodException | IllegalAccessException | InvocationTargetException | InstantiationException e) {69 throw new AssertionError(e);70 }71 }72 private static List<Class<?>> getSuperClasses(final Class<?> testClass) {73 final ArrayList<Class<?>> results = new ArrayList<>();74 Class<?> current = testClass;75 while (current != null) {76 results.add(current);77 current = current.getSuperclass();78 }79 return results;...
Source: OSGiLessRunner.java
...7import javax.inject.Inject;8import org.daisy.common.spi.CreateOnStart;9import org.daisy.common.spi.ServiceLoader;10import org.junit.runners.BlockJUnit4ClassRunner;11import org.junit.runners.model.FrameworkField;12import org.junit.runners.model.FrameworkMethod;13import org.junit.runners.model.InitializationError;14import org.junit.runners.model.Statement;15public class OSGiLessRunner extends BlockJUnit4ClassRunner {16 /* class loader for creating and injecting services unique to this runner */17 private final ClassLoader classLoader;18 private boolean configurationDone = false;19 public OSGiLessRunner(Class<?> testClass) throws InitializationError {20 super(testClass);21 classLoader = new URLClassLoader(new URL[]{}, Thread.currentThread().getContextClassLoader());22 }23 24 // Overriding "withBefores" and not the more logical "methodInvoker" because with25 // "methodInvoker" it is not possible to inject the services *before* "@Before" methods are26 // invoked. Because of caching, the same services are injected for every test method in the27 // class.28 @Override29 protected Statement withBefores(FrameworkMethod method, final Object test, Statement statement) {30 final Statement invoker = super.withBefores(method, test, statement);31 final List<FrameworkField> injectFields = getTestClass().getAnnotatedFields(Inject.class);32 return new Statement() {33 @Override34 public void evaluate() throws Throwable {35 ClassLoader savedContextClassLoader = Thread.currentThread().getContextClassLoader();36 try {37 if (!configurationDone) {38 for (FrameworkMethod c : getTestClass().getAnnotatedMethods(OSGiLessConfiguration.class))39 c.invokeExplosively(test);40 configurationDone = true;41 }42 Thread.currentThread().setContextClassLoader(classLoader);43 for (CreateOnStart c : ServiceLoader.load(CreateOnStart.class));44 for (FrameworkField f : injectFields) {45 Field field = f.getField();46 Class<?> type = field.getType();47 Object o; {48 try {49 o = ServiceLoader.load(type).iterator().next();50 } catch (NoSuchElementException e) {51 throw new RuntimeException("Failed to inject a " + type.getCanonicalName());52 }53 }54 try {55 field.set(test, o);56 } catch (IllegalAccessException e) {57 throw new RuntimeException("Failed to inject a " + type.getCanonicalName() + "; "58 + field.getName() + " field is not visible.");...
Source: RuleFieldValidator.java
...3import java.util.List;4import org.junit.ClassRule;5import org.junit.Rule;6import org.junit.rules.TestRule;7import org.junit.runners.model.FrameworkField;8import org.junit.runners.model.TestClass;9/**10 * A RuleFieldValidator validates the rule fields of a11 * {@link org.junit.runners.model.TestClass}. All reasons for rejecting the12 * {@code TestClass} are written to a list of errors.13 * 14 * There are two slightly different validators. The {@link #CLASS_RULE_VALIDATOR}15 * validates fields with a {@link ClassRule} annotation and the16 * {@link #RULE_VALIDATOR} validates fields with a {@link Rule} annotation.17 */18public enum RuleFieldValidator {19 /**20 * Validates fields with a {@link ClassRule} annotation.21 */22 CLASS_RULE_VALIDATOR(ClassRule.class, true),23 /**24 * Validates fields with a {@link Rule} annotation.25 */26 RULE_VALIDATOR(Rule.class, false);27 private final Class<? extends Annotation> fAnnotation;28 private final boolean fOnlyStaticFields;29 private RuleFieldValidator(Class<? extends Annotation> annotation,30 boolean onlyStaticFields) {31 this.fAnnotation= annotation;32 this.fOnlyStaticFields= onlyStaticFields;33 }34 /**35 * Validate the {@link org.junit.runners.model.TestClass} and adds reasons36 * for rejecting the class to a list of errors.37 * @param target the {@code TestClass} to validate.38 * @param errors the list of errors.39 */40 public void validate(TestClass target, List<Throwable> errors) {41 List<FrameworkField> fields= target.getAnnotatedFields(fAnnotation);42 for (FrameworkField each : fields)43 validateField(each, errors);44 }45 private void validateField(FrameworkField field, List<Throwable> errors) {46 optionallyValidateStatic(field, errors);47 validatePublic(field, errors);48 validateTestRuleOrMethodRule(field, errors);49 }50 private void optionallyValidateStatic(FrameworkField field,51 List<Throwable> errors) {52 if (fOnlyStaticFields && !field.isStatic())53 addError(errors, field, "must be static.");54 }55 private void validatePublic(FrameworkField field, List<Throwable> errors) {56 if (!field.isPublic())57 addError(errors, field, "must be public.");58 }59 private void validateTestRuleOrMethodRule(FrameworkField field,60 List<Throwable> errors) {61 if (!isMethodRule(field) && !isTestRule(field))62 addError(errors, field, "must implement MethodRule or TestRule.");63 }64 private boolean isTestRule(FrameworkField target) {65 return TestRule.class.isAssignableFrom(target.getType());66 }67 @SuppressWarnings("deprecation")68 private boolean isMethodRule(FrameworkField target) {69 return org.junit.rules.MethodRule.class.isAssignableFrom(target70 .getType());71 }72 private void addError(List<Throwable> errors, FrameworkField field,73 String suffix) {74 String message= "The @" + fAnnotation.getSimpleName() + " '"75 + field.getName() + "' " + suffix;76 errors.add(new Exception(message));77 }78}...
Source: FrameworkField.java
1package org.junit.runners.model;2import java.lang.annotation.Annotation;3import java.lang.reflect.Field;4public class FrameworkField extends FrameworkMember<FrameworkField> {5 private final Field field;6 FrameworkField(Field field2) {7 if (field2 != null) {8 this.field = field2;9 return;10 }11 throw new NullPointerException("FrameworkField cannot be created without an underlying field.");12 }13 @Override // org.junit.runners.model.FrameworkMember14 public String getName() {15 return getField().getName();16 }17 @Override // org.junit.runners.model.Annotatable18 public Annotation[] getAnnotations() {19 return this.field.getAnnotations();20 }21 @Override // org.junit.runners.model.Annotatable22 public <T extends Annotation> T getAnnotation(Class<T> annotationType) {23 return (T) this.field.getAnnotation(annotationType);24 }25 public boolean isShadowedBy(FrameworkField otherMember) {26 return otherMember.getName().equals(getName());27 }28 /* access modifiers changed from: protected */29 @Override // org.junit.runners.model.FrameworkMember30 public int getModifiers() {31 return this.field.getModifiers();32 }33 public Field getField() {34 return this.field;35 }36 @Override // org.junit.runners.model.FrameworkMember37 public Class<?> getType() {38 return this.field.getType();39 }...
FrameworkField
Using AI Code Generation
1public class FrameworkField {2 private final Field field;3 public FrameworkField(Field field) {4 this.field = field;5 }6 public Field getField() {7 return field;8 }9 public Class<?> getType() {10 return field.getType();11 }12 public String getName() {13 return field.getName();14 }15 public boolean isShadowedBy(FrameworkField other) {16 return field.getName().equals(other.getName());17 }18 public boolean isShadowedBy(List<FrameworkField> fields) {19 for (FrameworkField each : fields) {20 if (isShadowedBy(each)) {21 return true;22 }23 }24 return false;25 }26 public Object get(Object target) throws IllegalArgumentException,27 IllegalAccessException {28 return field.get(target);29 }30 public void validatePublicVoidNoArg(boolean isStatic, List<Throwable> errors) {31 validatePublicVoid(isStatic, errors);32 if (field.getType() != Void.TYPE) {33 errors.add(new Exception("Method " + getName()34 + " should be void"));35 }36 if (field.getParameterTypes().length != 0) {37 errors.add(new Exception("Method " + getName()38 + " should have no parameters"));39 }40 }41 public void validatePublicVoid(boolean isStatic, List<Throwable> errors) {42 int modifiers = field.getModifiers();43 if (!Modifier.isPublic(modifiers)) {44 errors.add(new Exception("Method " + getName()45 + " should be public"));46 }47 if (isStatic != Modifier.isStatic(modifiers)) {48 if (isStatic) {49 errors.add(new Exception("Method " + getName()50 + " should be static"));51 } else {52 errors.add(new Exception("Method " + getName()53 + " should not be static"));54 }55 }56 }57}
FrameworkField
Using AI Code Generation
1public class FrameworkField extends Field implements FrameworkMember<FrameworkField> {2 private final Field field;3 private final Object target;4 public FrameworkField(Field field) {5 this(field, null);6 }7 public FrameworkField(Field field, Object target) {8 this.field = field;9 this.target = target;10 }11 public Class<?> getType() {12 return field.getType();13 }14 public int getModifiers() {15 return field.getModifiers();16 }17 public String getName() {18 return field.getName();19 }20 public boolean isShadowedBy(FrameworkField other) {21 return false;22 }23 public boolean isShadowedBy(FrameworkMethod other) {24 return false;25 }26 public boolean isStatic() {27 return Modifier.isStatic(getModifiers());28 }29 public boolean isSynthetic() {30 return field.isSynthetic();31 }32 public void validatePublicVoidNoArg(boolean isStatic, List<Throwable> errors) {33 }34 public boolean equals(Object obj) {35 return super.equals(obj);36 }37 public int hashCode() {38 return super.hashCode();39 }40 public String toString() {41 return super.toString();42 }43 public Object get(Object target) throws IllegalAccessException {44 return field.get(target);45 }46 public void set(Object target, Object value) throws IllegalAccessException {47 field.set(target, value);48 }49 public void setAccessible(boolean flag) throws SecurityException {50 field.setAccessible(flag);51 }52 public boolean isAccessible() {53 return field.isAccessible();54 }55 public Annotation[] getAnnotations() {56 return field.getAnnotations();57 }58 public <T extends Annotation> T getAnnotation(Class<T> annotationType) {59 return field.getAnnotation(annotationType);60 }61 public <T extends Annotation> boolean isAnnotationPresent(Class<T> annotationType) {
FrameworkField
Using AI Code Generation
1import org.junit.runners.model.FrameworkField;2import org.junit.runners.model.TestClass;3import org.junit.runners.model.FrameworkMethod;4import org.junit.runner.RunWith;5import org.junit.runners.Parameterized;6import org.junit.runners.Parameterized.Parameters;7import org.junit.BeforeClass;8import org.junit.AfterClass;9import org.junit.Before;10import org.junit.After;11import org.junit.Test;12import org.junit.Assert;13import java.util.ArrayList;14import java.util.List;15import java.util.Collection;16import java.util.Arrays;17import java.util.Date;18import java.text.DateFormat;19import java.text.SimpleDateFormat;20import org.openqa.selenium.WebDriver;21import org.openqa.selenium.firefox.FirefoxDriver;22import org.openqa.selenium.chrome.ChromeDriver;23import org.openqa.selenium.ie.InternetExplorerDriver;24import org.openqa.selenium.By;25import org.openqa.selenium.WebElement;26import org.openqa.selenium.support.ui.ExpectedConditions;27import org.openqa.selenium.support.ui.WebDriverWait;28import java.util.concurrent.TimeUnit;
FrameworkField
Using AI Code Generation
1public class FrameworkFieldTest {2 private FrameworkField frameworkField;3 public void setUp() throws Exception {4 frameworkField = new FrameworkField(Example.class.getField("exampleField"));5 }6 public void testGetAnnotation() throws Exception {7 Example example = new Example();8 assertNotNull(frameworkField.getAnnotation(ExampleAnnotation.class));9 assertNull(frameworkField.getAnnotation(Test.class));10 assertEquals("exampleField", frameworkField.getAnnotation(ExampleAnnotation.class).value());11 frameworkField.getField().set(example, "example");12 assertEquals("example", example.getExampleField());13 }14 public void testGetAnnotations() throws Exception {15 assertEquals(1, frameworkField.getAnnotations().length);16 assertEquals(0, frameworkField.getAnnotationsByType(Test.class).length);17 assertEquals(1, frameworkField.getAnnotationsByType(ExampleAnnotation.class).length);18 }19 public void testGetDeclaredAnnotation() throws Exception {20 assertNotNull(frameworkField.getDeclaredAnnotation(ExampleAnnotation.class));21 assertNull(frameworkField.getDeclaredAnnotation(Test.class));22 assertEquals("exampleField", frameworkField.getDeclaredAnnotation(ExampleAnnotation.class).value());23 }24 public void testGetDeclaredAnnotations() throws Exception {25 assertEquals(1, frameworkField.getDeclaredAnnotations().length);26 assertEquals(0, frameworkField.getDeclaredAnnotationsByType(Test.class).length);27 assertEquals(1, frameworkField.getDeclaredAnnotationsByType(ExampleAnnotation.class).length);28 }29 public void testGetField() throws Exception {30 assertEquals(Example.class.getField("exampleField"), frameworkField.getField());31 }32 public void testGetName() throws Exception {33 assertEquals("exampleField", frameworkField.getName());34 }35 public void testGetType() throws Exception {36 assertEquals(String.class, frameworkField.getType());37 }38 public void testSetValue() throws Exception {39 Example example = new Example();40 frameworkField.setValue(example, "example");41 assertEquals("example", example.getExampleField());42 }43 private class Example {44 @ExampleAnnotation("exampleField")45 private String exampleField;46 public String getExampleField() {47 return exampleField;48 }49 }50 private @interface ExampleAnnotation {51 String value();52 }53}54package org.junit.tests.running.classes;
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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