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How to use registerTypeParametersOn method of org.mockito.internal.util.reflection.GenericMetadataSupport class

Best Mockito code snippet using org.mockito.internal.util.reflection.GenericMetadataSupport.registerTypeParametersOn

Source:GenericMetadataSupport.java

...84            // logger.log("For '" + parameterizedType + "' found type variable : { '" + typeParameter + "(" + System.identityHashCode(typeParameter) + ")" + "' : '" + actualTypeArgument + "(" + System.identityHashCode(typeParameter) + ")" + "' }");85        }86    }8788    protected void registerTypeParametersOn(TypeVariable[] typeParameters) {89        for (TypeVariable typeParameter : typeParameters) {90            contextualActualTypeParameters.put(typeParameter, boundsOf(typeParameter));91            // logger.log("For '" + typeParameter.getGenericDeclaration() + "' found type variable : { '" + typeParameter + "(" + System.identityHashCode(typeParameter) + ")" + "' : '" + boundsOf(typeParameter) + "' }");92        }93    }9495    /**96     * @param typeParameter The TypeVariable parameter97     * @return A {@link BoundedType} for easy bound information, if first bound is a TypeVariable98     *         then retrieve BoundedType of this TypeVariable99     */100    private BoundedType boundsOf(TypeVariable typeParameter) {101        if (typeParameter.getBounds()[0] instanceof TypeVariable) {102            return boundsOf((TypeVariable) typeParameter.getBounds()[0]);103        }104        return new TypeVarBoundedType(typeParameter);105    }106107    /**108     * @param wildCard The WildCard type109     * @return A {@link BoundedType} for easy bound information, if first bound is a TypeVariable110     *         then retrieve BoundedType of this TypeVariable111     */112    private BoundedType boundsOf(WildcardType wildCard) {113        /*114         *  According to JLS(http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.5.1):115         *  - Lower and upper can't coexist: (for instance, this is not allowed: <? extends List<String> & super MyInterface>)116         *  - Multiple bounds are not supported (for instance, this is not allowed: <? extends List<String> & MyInterface>)117         */118119        WildCardBoundedType wildCardBoundedType = new WildCardBoundedType(wildCard);120        if (wildCardBoundedType.firstBound() instanceof TypeVariable) {121            return boundsOf((TypeVariable) wildCardBoundedType.firstBound());122        }123124        return wildCardBoundedType;125    }126127128129    /**130     * @return Raw type of the current instance.131     */132    public abstract Class<?> rawType();133134135136    /**137     * @return Returns extra interfaces <strong>if relevant</strong>, otherwise empty List.138     */139    public List<Type> extraInterfaces() {140        return Collections.emptyList();141    }142143    /**144     * @return Returns an array with the raw types of {@link #extraInterfaces()} <strong>if relevant</strong>.145     */146    public Class<?>[] rawExtraInterfaces() {147        return new Class[0];148    }149150151152    /**153     * @return Actual type arguments matching the type variables of the raw type represented by this {@link GenericMetadataSupport} instance.154     */155    public Map<TypeVariable, Type> actualTypeArguments() {156        TypeVariable[] typeParameters = rawType().getTypeParameters();157        LinkedHashMap<TypeVariable, Type> actualTypeArguments = new LinkedHashMap<TypeVariable, Type>();158159        for (TypeVariable typeParameter : typeParameters) {160161            Type actualType = getActualTypeArgumentFor(typeParameter);162163            actualTypeArguments.put(typeParameter, actualType);164            // logger.log("For '" + rawType().getCanonicalName() + "' returning explicit TypeVariable : { '" + typeParameter + "(" + System.identityHashCode(typeParameter) + ")" + "' : '" + actualType +"' }");165        }166167        return actualTypeArguments;168    }169170    protected Type getActualTypeArgumentFor(TypeVariable typeParameter) {171        Type type = this.contextualActualTypeParameters.get(typeParameter);172        if (type instanceof TypeVariable) {173            TypeVariable typeVariable = (TypeVariable) type;174            return getActualTypeArgumentFor(typeVariable);175        }176177        return type;178    }179180181182    /**183     * Resolve current method generic return type to a {@link GenericMetadataSupport}.184     *185     * @param method Method to resolve the return type.186     * @return {@link GenericMetadataSupport} representing this generic return type.187     */188    public GenericMetadataSupport resolveGenericReturnType(Method method) {189        Type genericReturnType = method.getGenericReturnType();190        // logger.log("Method '" + method.toGenericString() + "' has return type : " + genericReturnType.getClass().getInterfaces()[0].getSimpleName() + " : " + genericReturnType);191192        if (genericReturnType instanceof Class) {193            return new NotGenericReturnTypeSupport(genericReturnType);194        }195        if (genericReturnType instanceof ParameterizedType) {196            return new ParameterizedReturnType(this, method.getTypeParameters(), (ParameterizedType) method.getGenericReturnType());197        }198        if (genericReturnType instanceof TypeVariable) {199            return new TypeVariableReturnType(this, method.getTypeParameters(), (TypeVariable) genericReturnType);200        }201202        throw new MockitoException("Ouch, it shouldn't happen, type '" + genericReturnType.getClass().getCanonicalName() + "' on method : '" + method.toGenericString() + "' is not supported : " + genericReturnType);203    }204205    /**206     * Create an new instance of {@link GenericMetadataSupport} inferred from a {@link Type}.207     *208     * <p>209     *     At the moment <code>type</code> can only be a {@link Class} or a {@link ParameterizedType}, otherwise210     *     it'll throw a {@link MockitoException}.211     * </p>212     *213     * @param type The class from which the {@link GenericMetadataSupport} should be built.214     * @return The new {@link GenericMetadataSupport}.215     * @throws MockitoException Raised if type is not a {@link Class} or a {@link ParameterizedType}.216     */217    public static GenericMetadataSupport inferFrom(Type type) {218        Checks.checkNotNull(type, "type");219        if (type instanceof Class) {220            return new FromClassGenericMetadataSupport((Class<?>) type);221        }222        if (type instanceof ParameterizedType) {223            return new FromParameterizedTypeGenericMetadataSupport((ParameterizedType) type);224        }225226        throw new MockitoException("Type meta-data for this Type (" + type.getClass().getCanonicalName() + ") is not supported : " + type);227    }228229230    ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////231    //// Below are specializations of GenericMetadataSupport that could handle retrieval of possible Types232    ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////233234    /**235     * Generic metadata implementation for {@link Class}.236     *237     * Offer support to retrieve generic metadata on a {@link Class} by reading type parameters and type variables on238     * the class and its ancestors and interfaces.239     */240    private static class FromClassGenericMetadataSupport extends GenericMetadataSupport {241        private Class<?> clazz;242243        public FromClassGenericMetadataSupport(Class<?> clazz) {244            this.clazz = clazz;245            readActualTypeParametersOnDeclaringClass();246        }247248        private void readActualTypeParametersOnDeclaringClass() {249            registerTypeParametersOn(clazz.getTypeParameters());250            registerTypeVariablesOn(clazz.getGenericSuperclass());251            for (Type genericInterface : clazz.getGenericInterfaces()) {252                registerTypeVariablesOn(genericInterface);253            }254        }255256        @Override257        public Class<?> rawType() {258            return clazz;259        }260    }261262263    /**264     * Generic metadata implementation for "standalone" {@link ParameterizedType}.265     *266     * Offer support to retrieve generic metadata on a {@link ParameterizedType} by reading type variables of267     * the related raw type and declared type variable of this parameterized type.268     *269     * This class is not designed to work on ParameterizedType returned by {@link Method#getGenericReturnType()}, as270     * the ParameterizedType instance return in these cases could have Type Variables that refer to type declaration(s).271     * That's what meant the "standalone" word at the beginning of the Javadoc.272     * Instead use {@link ParameterizedReturnType}.273     */274    private static class FromParameterizedTypeGenericMetadataSupport extends GenericMetadataSupport {275        private ParameterizedType parameterizedType;276277        public FromParameterizedTypeGenericMetadataSupport(ParameterizedType parameterizedType) {278            this.parameterizedType = parameterizedType;279            readActualTypeParameters();280        }281282        private void readActualTypeParameters() {283            registerTypeVariablesOn(parameterizedType.getRawType());284            registerTypeVariablesOn(parameterizedType);285        }286287        @Override288        public Class<?> rawType() {289            return (Class<?>) parameterizedType.getRawType();290        }291    }292293294    /**295     * Generic metadata specific to {@link ParameterizedType} returned via {@link Method#getGenericReturnType()}.296     */297    private static class ParameterizedReturnType extends GenericMetadataSupport {298        private final ParameterizedType parameterizedType;299        private final TypeVariable[] typeParameters;300301        public ParameterizedReturnType(GenericMetadataSupport source, TypeVariable[] typeParameters, ParameterizedType parameterizedType) {302            this.parameterizedType = parameterizedType;303            this.typeParameters = typeParameters;304            this.contextualActualTypeParameters = source.contextualActualTypeParameters;305306            readTypeParameters();307            readTypeVariables();308        }309310        private void readTypeParameters() {311            registerTypeParametersOn(typeParameters);312        }313314        private void readTypeVariables() {315            registerTypeVariablesOn(parameterizedType);316        }317318        @Override319        public Class<?> rawType() {320            return (Class<?>) parameterizedType.getRawType();321        }322323    }324325326    /**327     * Generic metadata for {@link TypeVariable} returned via {@link Method#getGenericReturnType()}.328     */329    private static class TypeVariableReturnType extends GenericMetadataSupport {330        private final TypeVariable typeVariable;331        private final TypeVariable[] typeParameters;332        private Class<?> rawType;333334335336        public TypeVariableReturnType(GenericMetadataSupport source, TypeVariable[] typeParameters, TypeVariable typeVariable) {337            this.typeParameters = typeParameters;338            this.typeVariable = typeVariable;339            this.contextualActualTypeParameters = source.contextualActualTypeParameters;340341            readTypeParameters();342            readTypeVariables();343        }344345        private void readTypeParameters() {346            registerTypeParametersOn(typeParameters);347        }348349        private void readTypeVariables() {350            for (Type type : typeVariable.getBounds()) {351                registerTypeVariablesOn(type);352            }353            registerTypeVariablesOn(getActualTypeArgumentFor(typeVariable));354        }355356        @Override357        public Class<?> rawType() {358            if (rawType == null) {359                rawType = extractRawTypeOf(typeVariable);360            }
...

registerTypeParametersOn

Using AI Code Generation

1public class GenericMetadataSupportTest {2    private GenericMetadataSupport genericMetadataSupport;3    public void setUp() {4        genericMetadataSupport = new GenericMetadataSupport();5    }6    public void testRegisterTypeParametersOn() throws Exception {7        class A<T> {8            T t;9        }10        class B extends A<String> {11        }12        class C extends B {13        }14        class D extends C {15        }16        genericMetadataSupport.registerTypeParametersOn(A.class, new TypeToken<A<String>>() {17        }.getType());18        genericMetadataSupport.registerTypeParametersOn(B.class, new TypeToken<B>() {19        }.getType());20        genericMetadataSupport.registerTypeParametersOn(C.class, new TypeToken<C>() {21        }.getType());22        genericMetadataSupport.registerTypeParametersOn(D.class, new TypeToken<D>() {23        }.getType());24        assertEquals(String.class, genericMetadataSupport.typeOf(A.class, "t"));25        assertEquals(String.class, genericMetadataSupport.typeOf(B.class, "t"));26        assertEquals(String.class, genericMetadataSupport.typeOf(C.class, "t"));27        assertEquals(String.class, genericMetadataSupport.typeOf(D.class, "t"));28    }29}30public class GenericMetadataSupportTest {31    private GenericMetadataSupport genericMetadataSupport;32    public void setUp() {33        genericMetadataSupport = new GenericMetadataSupport();34    }35    public void testRegisterTypeParametersOn() throws Exception {36        class A<T> {37            T t;38        }39        class B extends A<String> {40        }41        class C extends B {42        }43        class D extends C {44        }45        genericMetadataSupport.registerTypeParametersOn(A.class, new TypeToken<A<String>>() {46        }.getType());47        genericMetadataSupport.registerTypeParametersOn(B.class, new TypeToken<B>() {48        }.getType());49        genericMetadataSupport.registerTypeParametersOn(C.class, new TypeToken<C>() {50        }.getType());51        genericMetadataSupport.registerTypeParametersOn(D.class, new TypeToken<D>() {52        }.getType());53        assertEquals(String.class, genericMetadataSupport.typeOf(A.class, "t"));54        assertEquals(String.class, genericMetadataSupport.typeOf(B.class, "t"));55        assertEquals(String.class, genericMetadataSupport.typeOf(C.class, "t"));56        assertEquals(String.class, genericMetadataSupport

registerTypeParametersOn

Using AI Code Generation

1package com.baeldung.mockito.generics;2import static org.mockito.Mockito.mock;3import java.lang.reflect.Method;4import java.util.List;5import org.junit.Test;6import org.mockito.internal.util.reflection.GenericMetadataSupport;7import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericTypeExtractor;8import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericTypeExtractor.GenericType;9public class GenericMetadataSupportUnitTest {10    public void givenGenericMetadataSupport_whenRegisterTypeParametersOn_thenCorrect() throws Exception {11        GenericMetadataSupport genericMetadataSupport = new GenericMetadataSupport();12        Method method = GenericMetadataSupportUnitTest.class.getMethod("method", List.class);13        genericMetadataSupport.registerTypeParametersOn(method, mock(List.class));14        GenericTypeExtractor genericTypeExtractor = genericMetadataSupport.typeExtractorFor(method);15        GenericType genericType = genericTypeExtractor.genericTypeOf(List.class);16        System.out.println(genericType);17    }18    public void method(List<String> list) {19    }20}

registerTypeParametersOn

Using AI Code Generation

1package com.mycompany.app;2import java.util.List;3import java.util.Map;4import org.mockito.internal.util.reflection.GenericMetadataSupport;5public class App {6    public static void main(String[] args) {7        GenericMetadataSupport genericMetadataSupport = new GenericMetadataSupport();8        genericMetadataSupport.registerTypeParametersOn(List.class, Map.class);9        System.out.println("Hello World!");10    }11}

registerTypeParametersOn

Using AI Code Generation

1public class GenericMetadataSupportTest {2    public void shouldRegisterTypeParametersOn() {3        GenericMetadataSupport.registerTypeParametersOn(Child.class, Parent.class);4        GenericMetadataSupport.registerTypeParametersOn(Child.class, Child.class);5        GenericMetadataSupport.registerTypeParametersOn(Child.class, GrandParent.class);6    }7    public void shouldRegisterTypeParametersOn2() {8        GenericMetadataSupport.registerTypeParametersOn(Child.class, Parent.class);9        GenericMetadataSupport.registerTypeParametersOn(Child.class, Child.class);10        GenericMetadataSupport.registerTypeParametersOn(Child.class, GrandParent.class);11    }12    public void shouldRegisterTypeParametersOn3() {13        GenericMetadataSupport.registerTypeParametersOn(Child.class, Parent.class);14        GenericMetadataSupport.registerTypeParametersOn(Child.class, Child.class);15        GenericMetadataSupport.registerTypeParametersOn(Child.class, GrandParent.class);16    }17    public interface GrandParent<T> {18    }19    public interface Parent<T> extends GrandParent<T> {20    }21    public interface Child<T> extends Parent<T> {22    }23}24	at org.mockito.internal.util.reflection.GenericMetadataSupport.registerTypeParametersOn(GenericMetadataSupport.java:42)25	at org.mockito.internal.util.reflection.GenericMetadataSupportTest.shouldRegisterTypeParametersOn(GenericMetadataSupportTest.java:17)26	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)27	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)28	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)29	at java.lang.reflect.Method.invoke(Method.java:606)30	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)31	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)32	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)33	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)34	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)35	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)36	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47

registerTypeParametersOn

Using AI Code Generation

1import spock.lang.Specification2import spock.lang.Unroll3import spock.util.matcher.HamcrestSupport4import spock.util.matcher.HamcrestSupport.*5import org.mockito.internal.util.reflection.GenericMetadataSupport6import org.mockito.internal.util.reflection.GenericMetadataSupport.*7import org.mockito.internal.util.reflection.ParameterizedTypeImpl8class GenericMetadataSupportTest extends Specification {9    def "should get generic type parameters for a generic class"() {10        def typeParameters = GenericMetadataSupport.registerTypeParametersOn(HasGenericParameterizedType)11        assert typeParameters.size() == 112        assert typeParameters.get(0) == String13    }14    def "should get generic type parameters for a generic class with multiple parameters"() {15        def typeParameters = GenericMetadataSupport.registerTypeParametersOn(HasGenericParameterizedType2)16        assert typeParameters.size() == 217        assert typeParameters.get(0) == String18        assert typeParameters.get(1) == Integer19    }20    def "should get generic type parameters for a generic class with multiple parameters and a wild card"() {21        def typeParameters = GenericMetadataSupport.registerTypeParametersOn(HasGenericParameterizedType3)22        assert typeParameters.size() == 223        assert typeParameters.get(0) == String24        assert typeParameters.get(1) == Integer25    }26    def "should get generic type parameters for a generic class with multiple parameters and a wild card and a generic"() {27        def typeParameters = GenericMetadataSupport.registerTypeParametersOn(HasGenericParameterizedType4)28        assert typeParameters.size() == 329        assert typeParameters.get(0) == String30        assert typeParameters.get(1) == Integer31        assert typeParameters.get(2) == List32    }33    def "should get generic type parameters for a generic class with multiple parameters and a wild card and a generic and a generic with parameters"() {34        def typeParameters = GenericMetadataSupport.registerTypeParametersOn(HasGenericParameterizedType5)35        assert typeParameters.size() == 436        assert typeParameters.get(0) == String37        assert typeParameters.get(1) == Integer38        assert typeParameters.get(2) == List

registerTypeParametersOn

Using AI Code Generation

1public class TestClass<T> {2    public void testMethod(T t) {3        System.out.println(t);4    }5}6TestClass<Integer> testClass = new TestClass<Integer>();7GenericMetadataSupport.registerTypeParametersOn(TestClass.class, testClass, new Type[] { Integer.class });8testClass.testMethod(1);9    at org.mockito.internal.util.reflection.GenericMetadataSupport.registerTypeParametersOn(GenericMetadataSupport.java:50)10    at Test.main(Test.java:7)

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