How to use Annotation Type Parameterized.AfterParam class of org.junit.runners package

Best junit code snippet using org.junit.runners.Annotation Type Parameterized.AfterParam

Source:BlockJUnit4ClassRunnerWithParameters.java

1package org.junit.runners.parameterized;2import java.lang.annotation.Annotation;3import java.lang.reflect.Field;4import java.util.List;5import org.junit.internal.runners.statements.RunAfters;6import org.junit.internal.runners.statements.RunBefores;7import org.junit.runner.RunWith;8import org.junit.runner.notification.RunNotifier;9import org.junit.runners.BlockJUnit4ClassRunner;10import org.junit.runners.Parameterized;11import org.junit.runners.Parameterized.Parameter;12import org.junit.runners.model.FrameworkField;13import org.junit.runners.model.FrameworkMethod;14import org.junit.runners.model.InitializationError;15import org.junit.runners.model.Statement;16/**17 * A {@link BlockJUnit4ClassRunner} with parameters support. Parameters can be18 * injected via constructor or into annotated fields.19 */20public class BlockJUnit4ClassRunnerWithParameters extends21        BlockJUnit4ClassRunner {22    private enum InjectionType {23        CONSTRUCTOR, FIELD24    }25    private final Object[] parameters;26    private final String name;27    public BlockJUnit4ClassRunnerWithParameters(TestWithParameters test)28            throws InitializationError {29        super(test.getTestClass());30        parameters = test.getParameters().toArray(31                new Object[test.getParameters().size()]);32        name = test.getName();33    }34    @Override35    public Object createTest() throws Exception {36        InjectionType injectionType = getInjectionType();37        switch (injectionType) {38            case CONSTRUCTOR:39                return createTestUsingConstructorInjection();40            case FIELD:41                return createTestUsingFieldInjection();42            default:43                throw new IllegalStateException("The injection type "44                        + injectionType + " is not supported.");45        }46    }47    private Object createTestUsingConstructorInjection() throws Exception {48        return getTestClass().getOnlyConstructor().newInstance(parameters);49    }50    private Object createTestUsingFieldInjection() throws Exception {51        List<FrameworkField> annotatedFieldsByParameter = getAnnotatedFieldsByParameter();52        if (annotatedFieldsByParameter.size() != parameters.length) {53            throw new Exception(54                    "Wrong number of parameters and @Parameter fields."55                            + " @Parameter fields counted: "56                            + annotatedFieldsByParameter.size()57                            + ", available parameters: " + parameters.length58                            + ".");59        }60        Object testClassInstance = getTestClass().getJavaClass().newInstance();61        for (FrameworkField each : annotatedFieldsByParameter) {62            Field field = each.getField();63            Parameter annotation = field.getAnnotation(Parameter.class);64            int index = annotation.value();65            try {66                field.set(testClassInstance, parameters[index]);67            } catch (IllegalAccessException e) {68                IllegalAccessException wrappedException = new IllegalAccessException(69                        "Cannot set parameter '" + field.getName()70                                + "'. Ensure that the field '" + field.getName()71                                + "' is public.");72                wrappedException.initCause(e);73                throw wrappedException;74            } catch (IllegalArgumentException iare) {75                throw new Exception(getTestClass().getName()76                        + ": Trying to set " + field.getName()77                        + " with the value " + parameters[index]78                        + " that is not the right type ("79                        + parameters[index].getClass().getSimpleName()80                        + " instead of " + field.getType().getSimpleName()81                        + ").", iare);82            }83        }84        return testClassInstance;85    }86    @Override87    protected String getName() {88        return name;89    }90    @Override91    protected String testName(FrameworkMethod method) {92        return method.getName() + getName();93    }94    @Override95    protected void validateConstructor(List<Throwable> errors) {96        validateOnlyOneConstructor(errors);97        if (getInjectionType() != InjectionType.CONSTRUCTOR) {98            validateZeroArgConstructor(errors);99        }100    }101    @Override102    protected void validateFields(List<Throwable> errors) {103        super.validateFields(errors);104        if (getInjectionType() == InjectionType.FIELD) {105            List<FrameworkField> annotatedFieldsByParameter = getAnnotatedFieldsByParameter();106            int[] usedIndices = new int[annotatedFieldsByParameter.size()];107            for (FrameworkField each : annotatedFieldsByParameter) {108                int index = each.getField().getAnnotation(Parameter.class)109                        .value();110                if (index < 0 || index > annotatedFieldsByParameter.size() - 1) {111                    errors.add(new Exception("Invalid @Parameter value: "112                            + index + ". @Parameter fields counted: "113                            + annotatedFieldsByParameter.size()114                            + ". Please use an index between 0 and "115                            + (annotatedFieldsByParameter.size() - 1) + "."));116                } else {117                    usedIndices[index]++;118                }119            }120            for (int index = 0; index < usedIndices.length; index++) {121                int numberOfUse = usedIndices[index];122                if (numberOfUse == 0) {123                    errors.add(new Exception("@Parameter(" + index124                            + ") is never used."));125                } else if (numberOfUse > 1) {126                    errors.add(new Exception("@Parameter(" + index127                            + ") is used more than once (" + numberOfUse + ")."));128                }129            }130        }131    }132    @Override133    protected Statement classBlock(RunNotifier notifier) {134        Statement statement = childrenInvoker(notifier);135        statement = withBeforeParams(statement);136        statement = withAfterParams(statement);137        return statement;138    }139    private Statement withBeforeParams(Statement statement) {140        List<FrameworkMethod> befores = getTestClass()141                .getAnnotatedMethods(Parameterized.BeforeParam.class);142        return befores.isEmpty() ? statement : new RunBeforeParams(statement, befores);143    }144    private class RunBeforeParams extends RunBefores {145        RunBeforeParams(Statement next, List<FrameworkMethod> befores) {146            super(next, befores, null);147        }148        @Override149        protected void invokeMethod(FrameworkMethod method) throws Throwable {150            int paramCount = method.getMethod().getParameterTypes().length;151            method.invokeExplosively(null, paramCount == 0 ? (Object[]) null : parameters);152        }153    }154    private Statement withAfterParams(Statement statement) {155        List<FrameworkMethod> afters = getTestClass()156                .getAnnotatedMethods(Parameterized.AfterParam.class);157        return afters.isEmpty() ? statement : new RunAfterParams(statement, afters);158    }159    private class RunAfterParams extends RunAfters {160        RunAfterParams(Statement next, List<FrameworkMethod> afters) {161            super(next, afters, null);162        }163        @Override164        protected void invokeMethod(FrameworkMethod method) throws Throwable {165            int paramCount = method.getMethod().getParameterTypes().length;166            method.invokeExplosively(null, paramCount == 0 ? (Object[]) null : parameters);167        }168    }169    @Override170    protected Annotation[] getRunnerAnnotations() {171        Annotation[] allAnnotations = super.getRunnerAnnotations();172        Annotation[] annotationsWithoutRunWith = new Annotation[allAnnotations.length - 1];173        int i = 0;174        for (Annotation annotation: allAnnotations) {175            if (!annotation.annotationType().equals(RunWith.class)) {176                annotationsWithoutRunWith[i] = annotation;177                ++i;178            }179        }180        return annotationsWithoutRunWith;181    }182    private List<FrameworkField> getAnnotatedFieldsByParameter() {183        return getTestClass().getAnnotatedFields(Parameter.class);184    }185    private InjectionType getInjectionType() {186        if (fieldsAreAnnotated()) {187            return InjectionType.FIELD;188        } else {189            return InjectionType.CONSTRUCTOR;190        }191    }192    private boolean fieldsAreAnnotated() {193        return !getAnnotatedFieldsByParameter().isEmpty();194    }195}...

Annotation Type Parameterized.AfterParam

Using AI Code Generation

1import org.junit.runners.Parameterized;2import org.junit.runners.Parameterized.Parameters;3import org.junit.runners.Parameterized.Parameter;4import org.junit.runner.RunWith;5import org.junit.Test;6import static org.junit.Assert.assertEquals;7@RunWith(Parameterized.class)8public class AfterParamTest {9    private int input;10    private int expected;11    @Parameter(value = 0)12    public void setInput(int input) {13        this.input = input;14    }15    @Parameter(value = 1)16    public void setExpected(int expected) {17        this.expected = expected;18    }19    public static Object[][] data() {20        return new Object[][] {21            {1, 1},22            {2, 2},23            {3, 3},24            {4, 4},25            {5, 5}26        };27    }28    public void test() {29        assertEquals(expected, input);30    }31}32OK (1 test)

Annotation Type Parameterized.AfterParam

Using AI Code Generation

1import org.junit.runners.Parameterized;2public class ParameterizedExample {3    public static Iterable<Object[]> data1() {4        return Arrays.asList(new Object[][] { { 1, 1 }, { 2, 2 }, { 8, 8 }, { 4, 4 } });5    }6    @Parameterized.Parameter(0)7    public int fInput;8    @Parameterized.Parameter(1)9    public int fExpected;10    public void test() {11        assertEquals(fExpected, fInput);12    }13}14import org.junit.runners.Parameterized;15public class ParameterizedExample {16    public static Iterable<Object[]> data1() {17        return Arrays.asList(new Object[][] { { 1, 1 }, { 2, 2 }, { 8, 8 }, { 4, 4 } });18    }19    @Parameterized.Parameter(0)20    public int fInput;21    @Parameterized.Parameter(1)22    public int fExpected;23    public void test() {24        assertEquals(fExpected, fInput);25    }26}27import org.junit.runners.Parameterized;28public class ParameterizedExample {29    public static Iterable<Object[]> data1() {30        return Arrays.asList(new Object[][] { { 1, 1 }, { 2, 2 }, { 8, 8 }, { 4, 4 } });31    }32    @Parameterized.Parameter(0)33    public int fInput;34    @Parameterized.Parameter(1)35    public int fExpected;36    public void test() {37        assertEquals(fExpected, fInput);38    }39}40import org.junit.runners.Parameterized;41public class ParameterizedExample {42    public static Iterable<Object[]> data1() {43        return Arrays.asList(new Object[][] { { 1, 1 }, { 2, 2 }, { 8, 8 }, { 4, 4 } });44    }45    @Parameterized.Parameter(0)46    public int fInput;47    @Parameterized.Parameter(1)

Annotation Type Parameterized.AfterParam

Using AI Code Generation

1import org.junit.runners.Parameterized;2import org.junit.runners.Parameterized.AfterParam;3public class ParameterizedTest {4	public static void afterParam(Object param) {5		System.out.println("After Parameterized Test: " + param);6	}7}8import org.junit.runners.Parameterized;9import org.junit.runners.Parameterized.BeforeParam;10public class ParameterizedTest {11	public static void beforeParam(Object param) {12		System.out.println("Before Parameterized Test: " + param);13	}14}15import org.junit.runners.Parameterized;16import org.junit.runners.Parameterized.Parameters;17public class ParameterizedTest {18	public static Collection<Object[]> data() {19		return Arrays.asList(new Object[][] { { 0, false }, { 5, false }, { 6, true }, { 10, true }, { 11, false }, });20	}21	private int fInput;22	private boolean fExpected;23	public ParameterizedTest(int input, boolean expected) {24		fInput = input;25		fExpected = expected;26	}27	public void test() {28		assertEquals(fExpected, fInput % 2 == 0);29	}30}31import org.junit.runners.Parameterized;32import org.junit.runners.Parameterized.UseParametersRunnerFactory;33public class ParameterizedTest {34	@UseParametersRunnerFactory(CustomRunnerFactory.class)35	public static class CustomRunnerFactory implements ParametersRunnerFactory {36		public Runner createRunnerForTestWithParameters(TestWithParameters test) throws InitializationError {37			return new BlockJUnit4ClassRunnerWithParameters(test);38		}39	}40}41import org.junit.runners.Parameterized;42import org.junit.runners.Parameterized.UseParametersRunnerFactory;43public class ParameterizedTest {44	@UseParametersRunnerFactory(CustomRunnerFactory.class)45	public static class CustomRunnerFactory implements ParametersRunnerFactory {46		public Runner createRunnerForTestWithParameters(TestWithParameters test) throws InitializationError {47			return new BlockJUnit4ClassRunnerWithParameters(test);48		}49	}50}

Annotation Type Parameterized.AfterParam

Using AI Code Generation

1@RunWith(Parameterized.class)2public class TestRunner {3    private String name;4    private int age;5    private String address;6    public TestRunner(String name, int age, String address) {7        this.name = name;8        this.age = age;9        this.address = address;10    }11    public static Collection<Object[]> data() {12        Object[][] data = new Object[][] { { "John", 20, "USA" }, { "Peter", 25, "UK" }, { "Mark", 30, "China" } };13        return Arrays.asList(data);14    }15    public void test() {16        System.out.println("Name: " + name + ", Age: " + age + ", Address: " + address);17    }18}

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