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How to use collectAnnotatedFieldValues method of org.junit.runners.model.Test class

Best junit code snippet using org.junit.runners.model.Test.collectAnnotatedFieldValues

Source:TestClass.java

...11  public java.lang.reflect.Constructor<?> getOnlyConstructor();12  public java.lang.annotation.Annotation[] getAnnotations();13  public <T extends java.lang.annotation.Annotation> T getAnnotation(java.lang.Class<T>);14  public <T> java.util.List<T> getAnnotatedFieldValues(java.lang.Object, java.lang.Class<? extends java.lang.annotation.Annotation>, java.lang.Class<T>);15  public <T> void collectAnnotatedFieldValues(java.lang.Object, java.lang.Class<? extends java.lang.annotation.Annotation>, java.lang.Class<T>, org.junit.runners.model.MemberValueConsumer<T>);16  public <T> java.util.List<T> getAnnotatedMethodValues(java.lang.Object, java.lang.Class<? extends java.lang.annotation.Annotation>, java.lang.Class<T>);17  public <T> void collectAnnotatedMethodValues(java.lang.Object, java.lang.Class<? extends java.lang.annotation.Annotation>, java.lang.Class<T>, org.junit.runners.model.MemberValueConsumer<T>);18  public boolean isPublic();19  public boolean isANonStaticInnerClass();20  public int hashCode();21  public boolean equals(java.lang.Object);22  static {};23}...

Source:MemberValueConsumer.java

1package org.junit.runners.model;2/**3 * Represents a receiver for values of annotated fields/methods together with the declaring member.4 *5 * @see TestClass#collectAnnotatedFieldValues(Object, Class, Class, MemberValueConsumer)6 * @see TestClass#collectAnnotatedMethodValues(Object, Class, Class, MemberValueConsumer)7 * @since 4.138 */9public interface MemberValueConsumer<T> {10    /**11     * Receives the next value and its declaring member.12     *13     * @param member declaring member ({@link FrameworkMethod or {@link FrameworkField}}14     * @param value the value of the next member15     */16    void accept(FrameworkMember member, T value);17}

collectAnnotatedFieldValues

Using AI Code Generation

1        Class<?> testClass = Class.forName("org.junit.runners.model.Test");2        Method method = testClass.getMethod("collectAnnotatedFieldValues", Object.class, Class.class, Class.class);3        Object result = method.invoke(null, this, annotation, field);4        return (List<T>) result;5    }6    private void collectAnnotatedFields(Class<? extends Annotation> annotation, List<Field> fields) {7        collectAnnotatedFields(annotation, fields, testClass);8    }9    private void collectAnnotatedFields(Class<? extends Annotation> annotation, List<Field> fields, Class<?> clazz) {10        for (Field each : clazz.getDeclaredFields()) {11            if (each.isAnnotationPresent(annotation)) {12                fields.add(each);13            }14        }15        if (clazz.getSuperclass() != null) {16            collectAnnotatedFields(annotation, fields, clazz.getSuperclass());17        }18    }19    private void validateNoDuplicateValues(List<?> values, String annotationName) {20        Set<Object> nonDuplicates = new HashSet<Object>();21        for (Object each : values) {22            if (!nonDuplicates.add(each)) {23                throw new InitializationError(String.format("class '%s' has duplicate values for %s", getTestClass().getName(), annotationName));24            }25        }26    }27    private void validateConstructor(List<Throwable> errors) throws Exception {28        validateOnlyOneConstructor(errors);29        if (errors.isEmpty()) {30            validateZeroArgConstructor(errors);31        }32    }33    private void validateOnlyOneConstructor(List<Throwable> errors) {34        if (testClass.getConstructors().length != 1) {35            String gripe = "Test class should have exactly one public constructor";36            errors.add(new Exception(gripe));37        }38    }39    private void validateZeroArgConstructor(List<Throwable> errors) throws Exception {40        Constructor<?> constructor = testClass.getConstructor();41        if (!Modifier.isPublic(constructor.getModifiers())) {42            String gripe = "Test class should have public zero-argument constructor";43            errors.add(new Exception(gripe));44        }45    }46    private void validateFields(List<Throwable> errors) {47        validatePublicVoidNoArgMethods(After.class, false, errors);48        validatePublicVoidNoArgMethods(Before.class, false, errors);49        validateTestMethods(errors);50        validateNoStaticFields(errors);51    }52    private void validateNoStaticFields(List<Throwable> errors) {53        for (Field each : testClass

collectAnnotatedFieldValues

Using AI Code Generation

1import org.junit.runner.RunWith;2import org.junit.runners.Parameterized;3import org.junit.runners.Parameterized.Parameters;4import org.junit.runners.model.TestClass;5import java.lang.reflect.Field;6import java.util.ArrayList;7import java.util.List;8@RunWith(Parameterized.class)9public class ParameterizedTest {10    private String name;11    public ParameterizedTest(String name) {12        this.name = name;13    }14    public static List<Object[]> data() {15        TestClass testClass = new TestClass(ParameterizedTest.class);16        List<Object[]> list = new ArrayList<Object[]>();17        for (Field field : testClass.getAnnotatedFields(Test.class)) {18            for (Object value : testClass.collectAnnotatedFieldValues(field)) {19                list.add(new Object[] { value });20            }21        }22        return list;23    }24}

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Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
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Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
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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.