How to use getReturnType method of org.junit.runners.model.FrameworkMethod class

Best junit code snippet using org.junit.runners.model.FrameworkMethod.getReturnType

Source:TestSuite.java

...54        FrameworkMethod method = getParametersMethod(klass);55        List<File> javaFiles;56        //We will have either a method getTestDirs which returns String [] or getTestFiles57        //which returns List<Object []> or getParametersMethod would fail58        if (method.getReturnType().isArray()) {59            String [] dirs = (String[]) method.invokeExplosively(null);60            javaFiles = TestUtilities.findNestedJavaTestFiles(dirs);61        } else {62            javaFiles = (List<File>) method.invokeExplosively(null);63        }64        List<Object []> argumentLists = new ArrayList<>();65        for (File javaFile : javaFiles) {66            argumentLists.add(new Object[]{javaFile});67        }68        return argumentLists;69    }70    /** Returns method annotated @Parameters, typically the getTestDirs or getTestFiles method. */71    private FrameworkMethod getParametersMethod(TestClass testClass) {72        final List<FrameworkMethod> parameterMethods = testClass.getAnnotatedMethods(Parameters.class);73        if (parameterMethods.size() != 1) {74            StringBuilder methods = new StringBuilder();75            if (parameterMethods.isEmpty()) {76                 methods.append("[No methods specified]");77            } else {78                boolean first = true;79                for (FrameworkMethod method : parameterMethods) {80                    if (!first) {81                        methods.append(", ");82                    } else {83                        first = false;84                    }85                    methods.append(method.getName());86                }87            }88            throw new RuntimeException("Exactly one of the following methods should be declared:\n"89                                     + requiredFormsMessage + "\n"90                                     + "testClass=" + testClass.getName() + "\n"91                                     + "parameterMethods=" + methods.toString()92            );93        } //else94        FrameworkMethod method = parameterMethods.get(0);95        Class<?> returnType = method.getReturnType();96        String methodName = method.getName();97        switch (methodName) {98            case "getTestDirs":99                if (returnType.isArray()) {100                    if (!returnType.getComponentType().equals(String.class)) {101                        throw new RuntimeException("Component type of getTestDirs must be java.lang.String, found "102                                                  + returnType.getComponentType().getCanonicalName()103                        );104                    }105                }106                break;107            case "getTestFiles":108                //we'll force people to return a List for now but enforcing exactl List<File> or a109                //subtype thereof is not easy...

Source:PerFileSuite.java

...69    // which returns List<Object []> or getParametersMethod would fail70    if (method == null) {71      throw new BugInCF("no method annotated with @Parameters");72    }73    if (method.getReturnType().isArray()) {74      String[] dirs = (String[]) method.invokeExplosively(null);75      javaFiles = TestUtilities.findNestedJavaTestFiles(dirs);76    } else {77      javaFiles = (List<File>) method.invokeExplosively(null);78    }79    List<Object[]> argumentLists =80        CollectionsPlume.mapList((File javaFile) -> new Object[] {javaFile}, javaFiles);81    return argumentLists;82  }83  /** Returns method annotated @Parameters, typically the getTestDirs or getTestFiles method. */84  private FrameworkMethod getParametersMethod(TestClass testClass) {85    final List<FrameworkMethod> parameterMethods = testClass.getAnnotatedMethods(Parameters.class);86    if (parameterMethods.size() != 1) {87      // Construct error message88      String methods;89      if (parameterMethods.isEmpty()) {90        methods = "[No methods specified]";91      } else {92        StringJoiner sj = new StringJoiner(", ");93        for (FrameworkMethod method : parameterMethods) {94          sj.add(method.getName());95        }96        methods = sj.toString();97      }98      throw new BugInCF(requiredFormsMessage, testClass.getName(), methods);99    } // else100    FrameworkMethod method = parameterMethods.get(0);101    Class<?> returnType = method.getReturnType();102    String methodName = method.getName();103    switch (methodName) {104      case "getTestDirs":105        if (returnType.isArray()) {106          if (returnType.getComponentType() != String.class) {107            throw new RuntimeException(108                "Component type of getTestDirs must be java.lang.String, found "109                    + returnType.getComponentType().getCanonicalName());110          }111        }112        break;113      case "getTestFiles":114        // We'll force people to return a List for now but enforcing exactly List<File> or a115        // subtype thereof is not easy....

Source:PerDirectorySuite.java

...64    // or getParametersMethod would fail.65    if (method == null) {66      throw new BugInCF("no method annotated with @Parameters");67    }68    if (!method.getReturnType().isArray()) {69      throw new BugInCF(70          "@Parameters annotation on method that does not return an array: " + method);71    }72    String[] dirs = (String[]) method.invokeExplosively(null);73    return TestUtilities.findJavaFilesPerDirectory(new File("tests"), dirs);74  }75  /** Returns method annotated @Parameters, typically the getTestDirs or getTestFiles method. */76  private FrameworkMethod getParametersMethod(TestClass testClass) {77    final List<FrameworkMethod> parameterMethods = testClass.getAnnotatedMethods(Parameters.class);78    if (parameterMethods.size() != 1) {79      // Construct error message80      String methods;81      if (parameterMethods.isEmpty()) {82        methods = "[No methods specified]";83      } else {84        StringJoiner sj = new StringJoiner(", ");85        for (FrameworkMethod method : parameterMethods) {86          sj.add(method.getName());87        }88        methods = sj.toString();89      }90      throw new BugInCF(91          "Exactly one of the following methods should be declared:%n%s%n"92              + "testClass=%s%n"93              + "parameterMethods=%s",94          requiredFormsMessage, testClass.getName(), methods);95    }96    FrameworkMethod method = parameterMethods.get(0);97    Class<?> returnType = method.getReturnType();98    String methodName = method.getName();99    switch (methodName) {100      case "getTestDirs":101        if (!(returnType.isArray() && returnType.getComponentType() == String.class)) {102          throw new RuntimeException("getTestDirs should return String[], found " + returnType);103        }104        break;105      default:106        throw new RuntimeException(107            requiredFormsMessage108                + "%n"109                + "testClass="110                + testClass.getName()111                + "%n"...

Source:WicketJUnitRunner.java

...125				{126					Method javaMethod = clazz.getDeclaredMethod(methodName, parameterTypes);127					if (javaMethod != null &&128						Modifier.isProtected(javaMethod.getModifiers()) &&129						(javaMethod.getReturnType().equals(Void.TYPE) || javaMethod.getReturnType()130							.equals(Void.class)))131					{132						javaMethod.setAccessible(true);133						junitMethods.add(new FrameworkMethod(javaMethod));134						break;135					}136				}137				catch (NoSuchMethodException nsmx)138				{139				}140				clazz = clazz.getSuperclass();141			}142		}143		catch (Exception e)144		{145			throw new RuntimeException(e);146		}147	}148	/**149	 * Checks whether the passes {@code javaMethod} is JUnit 3 test method150	 * 151	 * @param javaMethod152	 *            the method to check153	 * @return {@code true} if the method passes all conditions to be JUnit3 method, otherwise154	 *         {@code false}155	 */156	private boolean isJUnitMethod(final Method javaMethod)157	{158		return Modifier.isPublic(javaMethod.getModifiers()) &&159			// is not JUnit 4 test method160			javaMethod.getAnnotation(Test.class) == null &&161			(Void.TYPE.equals(javaMethod.getReturnType()) || Void.class.equals(javaMethod.getReturnType())) &&162			javaMethod.getName().startsWith("test");163	}164}...

Source:FrameworkMethod.java

...43        }44        if (!isPublic()) {45            errors.add(new Exception("Method " + this.method.getName() + "() should be public"));46        }47        if (this.method.getReturnType() != Void.TYPE) {48            errors.add(new Exception("Method " + this.method.getName() + "() should be void"));49        }50    }51    /* access modifiers changed from: protected */52    @Override // org.junit.runners.model.FrameworkMember53    public int getModifiers() {54        return this.method.getModifiers();55    }56    public Class<?> getReturnType() {57        return this.method.getReturnType();58    }59    @Override // org.junit.runners.model.FrameworkMember60    public Class<?> getType() {61        return getReturnType();62    }63    @Override // org.junit.runners.model.FrameworkMember64    public Class<?> getDeclaringClass() {65        return this.method.getDeclaringClass();66    }67    public void validateNoTypeParametersOnArgs(List<Throwable> errors) {68        new NoGenericTypeParametersValidator(this.method).validate(errors);69    }70    public boolean isShadowedBy(FrameworkMethod other) {71        if (!(other.getName().equals(getName()) && other.getParameterTypes().length == getParameterTypes().length)) {72            return false;73        }74        for (int i = 0; i < other.getParameterTypes().length; i++) {75            if (!other.getParameterTypes()[i].equals(getParameterTypes()[i])) {76                return false;77            }78        }79        return true;80    }81    public boolean equals(Object obj) {82        if (!FrameworkMethod.class.isInstance(obj)) {83            return false;84        }85        return ((FrameworkMethod) obj).method.equals(this.method);86    }87    public int hashCode() {88        return this.method.hashCode();89    }90    @Deprecated91    public boolean producesType(Type type) {92        return getParameterTypes().length == 0 && (type instanceof Class) && ((Class) type).isAssignableFrom(this.method.getReturnType());93    }94    private Class<?>[] getParameterTypes() {95        return this.method.getParameterTypes();96    }97    @Override // org.junit.runners.model.Annotatable98    public Annotation[] getAnnotations() {99        return this.method.getAnnotations();100    }101    @Override // org.junit.runners.model.Annotatable102    public <T extends Annotation> T getAnnotation(Class<T> annotationType) {103        return (T) this.method.getAnnotation(annotationType);104    }105    public String toString() {106        return this.method.toString();...

Source:TestObject.java

...23        }24        return testClass.getOnlyConstructor().newInstance();25    }26    private void validateFactoryMethod(Method factoryMethod) throws InitializationError {27        if (!factoryMethod.getReturnType().isAssignableFrom(testClass.getJavaClass())) {28            throw new InitializationError("Illegal factory method return type.");29        }30        if (!Modifier.isStatic(factoryMethod.getModifiers())) {31            throw new InitializationError("@FactoryMethod must be static!");32        }33    }34}...

getReturnType

Using AI Code Generation

1import org.junit.Test;2import org.junit.runner.RunWith;3import org.junit.runners.JUnit4;4import org.junit.runners.model.FrameworkMethod;5@RunWith(JUnit4.class)6public class GetReturnTypeTest {7    public void testGetReturnType() throws NoSuchMethodException {8        FrameworkMethod frameworkMethod = new FrameworkMethod(GetReturnTypeTest.class.getMethod("testGetReturnType"));9        Class<?> returnType = frameworkMethod.getReturnType();10        System.out.println(returnType);11    }12}

getReturnType

Using AI Code Generation

1public class FrameworkMethodReturnTypeTest {2    public void testReturnType() throws Exception {3        FrameworkMethod method = new FrameworkMethod(FrameworkMethodReturnTypeTest.class.getMethod("testReturnType"));4        Class<?> returnType = method.getReturnType();5        System.out.println(returnType);6    }7}8public class FrameworkMethodReturnTypeTest {9    public void testReturnType() throws Exception {10        Method method = FrameworkMethodReturnTypeTest.class.getMethod("testReturnType");11        Class<?> returnType = method.getReturnType();12        System.out.println(returnType);13    }14}

getReturnType

Using AI Code Generation

1import java.lang.reflect.Method;2import java.lang.reflect.Type;3import java.util.Arrays;4import java.util.List;5import org.junit.runners.model.FrameworkMethod;6public class FrameworkMethodReturnType {7    public static void main(String[] args) throws Exception {8        FrameworkMethodReturnType obj = new FrameworkMethodReturnType();9        obj.getReturnType();10    }11    public void getReturnType() throws Exception {12        Method method = FrameworkMethodReturnType.class.getMethod("getReturnType");13        FrameworkMethod frameworkMethod = new FrameworkMethod(method);14        Type returnType = frameworkMethod.getReturnType();15        System.out.println("Return type: " + returnType);16    }17}18import java.lang.reflect.Method;19import java.lang.reflect.Type;20import java.util.Arrays;21import java.util.List;22import org.junit.runners.model.FrameworkMethod;23public class FrameworkMethodReturnType {24    public static void main(String[] args) throws Exception {25        FrameworkMethodReturnType obj = new FrameworkMethodReturnType();26        obj.getGenericReturnType();27    }28    public List<String> getGenericReturnType() throws Exception {29        Method method = FrameworkMethodReturnType.class.getMethod("getGenericReturnType");30        FrameworkMethod frameworkMethod = new FrameworkMethod(method);31        Type returnType = frameworkMethod.getGenericReturnType();32        System.out.println("Return type: " + returnType);33        return Arrays.asList("Hello", "World");34    }35}36import java.lang.reflect.Method;37import java.lang.reflect.Type;38import java.util.Arrays;39import java.util.List;40import org.junit.runners.model.FrameworkMethod;41public class FrameworkMethodReturnType {42    public static void main(String[] args) throws Exception {43        FrameworkMethodReturnType obj = new FrameworkMethodReturnType();44        obj.getReturnType();45    }46    public List<String> getReturnType() throws Exception {47        Method method = FrameworkMethodReturnType.class.getMethod("getReturnType");48        FrameworkMethod frameworkMethod = new FrameworkMethod(method);49        Type returnType = frameworkMethod.getReturnType();50        System.out.println("Return type: " + returnType);51        return Arrays.asList("Hello", "World");52    }53}

getReturnType

Using AI Code Generation

1public class TestReturn {2    public String test1(){3        return "test1";4    }5    public void test2(){6        System.out.println("test2");7    }8    public int test3(){9        return 3;10    }11    public static void main(String[] args) throws Exception {12        TestReturn testReturn = new TestReturn();13        Class<?> clazz = testReturn.getClass();14        Method method = clazz.getMethod("test1");15        System.out.println(method.getReturnType());16        method = clazz.getMethod("test2");17        System.out.println(method.getReturnType());18        method = clazz.getMethod("test3");19        System.out.println(method.getReturnType());20    }21}

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
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.