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

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

Source:GenericMetadataSupport.java

...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            }361            return rawType;362        }363364        private Class<?> extractRawTypeOf(Type type) {365            if (type instanceof Class) {366                return (Class<?>) type;367            }368            if (type instanceof ParameterizedType) {369                return (Class<?>) ((ParameterizedType) type).getRawType();370            }371            if (type instanceof BoundedType) {372                return extractRawTypeOf(((BoundedType) type).firstBound());373            }374            if (type instanceof TypeVariable) {375                /*376                 * If type is a TypeVariable, then it is needed to gather data elsewhere. Usually TypeVariables are declared377                 * on the class definition, such as such as List<E>.378                 */379                return extractRawTypeOf(contextualActualTypeParameters.get(type));380            }381            throw new MockitoException("Raw extraction not supported for : '" + type + "'");382        }383384        @Override385        public List<Type> extraInterfaces() {386            Type type = extractActualBoundedTypeOf(typeVariable);387            if (type instanceof BoundedType) {388                return Arrays.asList(((BoundedType) type).interfaceBounds());389            }390            if (type instanceof ParameterizedType) {391                return Collections.singletonList(type);392            }393            if (type instanceof Class) {394                return Collections.emptyList();395            }396            throw new MockitoException("Cannot extract extra-interfaces from '" + typeVariable + "' : '" + type + "'");397        }398399        /**400         * @return Returns an array with the extracted raw types of {@link #extraInterfaces()}.401         * @see #extractRawTypeOf(java.lang.reflect.Type)402         */403        public Class<?>[] rawExtraInterfaces() {404            List<Type> extraInterfaces = extraInterfaces();405            List<Class<?>> rawExtraInterfaces = new ArrayList<Class<?>>();406            for (Type extraInterface : extraInterfaces) {407                Class<?> rawInterface = extractRawTypeOf(extraInterface);408                // avoid interface collision with actual raw type (with typevariables, resolution ca be quite aggressive)409                if(!rawType().equals(rawInterface)) {410                    rawExtraInterfaces.add(rawInterface);411                }412            }413            return rawExtraInterfaces.toArray(new Class[rawExtraInterfaces.size()]);414        }415416        private Type extractActualBoundedTypeOf(Type type) {417            if (type instanceof TypeVariable) {418                /*419                If type is a TypeVariable, then it is needed to gather data elsewhere. Usually TypeVariables are declared420                on the class definition, such as such as List<E>.421                */422                return extractActualBoundedTypeOf(contextualActualTypeParameters.get(type));423            }424            if (type instanceof BoundedType) {425                Type actualFirstBound = extractActualBoundedTypeOf(((BoundedType) type).firstBound());426                if (!(actualFirstBound instanceof BoundedType)) {427                    return type; // avoid going one step further, ie avoid : O(TypeVar) -> K(TypeVar) -> Some ParamType428                }429                return actualFirstBound;430            }431            return type; // irrelevant, we don't manage other types as they are not bounded.432        }433    }434435436437    /**438     * Non-Generic metadata for {@link Class} returned via {@link Method#getGenericReturnType()}.439     */440    private static class NotGenericReturnTypeSupport extends GenericMetadataSupport {441        private final Class<?> returnType;442443        public NotGenericReturnTypeSupport(Type genericReturnType) {444            returnType = (Class<?>) genericReturnType;445        }446447        @Override448        public Class<?> rawType() {449            return returnType;450        }451    }452453454455    /**456     * Type representing bounds of a type457     *458     * @see TypeVarBoundedType459     * @see <a href="http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.4">http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.4</a>460     * @see WildCardBoundedType461     * @see <a href="http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.5.1">http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.5.1</a>462     */463    public static interface BoundedType extends Type {464        Type firstBound();465466        Type[] interfaceBounds();467    }468469    /**470     * Type representing bounds of a type variable, allows to keep all bounds information.471     *472     * <p>It uses the first bound in the array, as this array is never null and always contains at least473     * one element (Object is always here if no bounds are declared).</p>474     *475     * <p>If upper bounds are declared with SomeClass and additional interfaces, then firstBound will be SomeClass and476     * interfacesBound will be an array of the additional interfaces.477     *478     * i.e. <code>SomeClass</code>.479     * <pre class="code"><code class="java">480     *     interface UpperBoundedTypeWithClass<E extends Comparable<E> & Cloneable> {481     *         E get();482     *     }483     *     // will return Comparable type484     * </code></pre>485     * </p>486     *487     * @see <a href="http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.4">http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.4</a>488     */489    public static class TypeVarBoundedType implements BoundedType {490        private TypeVariable typeVariable;491492493        public TypeVarBoundedType(TypeVariable typeVariable) {494            this.typeVariable = typeVariable;495        }496497        /**498         * @return either a class or an interface (parameterized or not), if no bounds declared Object is returned.499         */500        public Type firstBound() {501            return typeVariable.getBounds()[0]; //502        }503504        /**505         * On a Type Variable (typeVar extends C_0 & I_1 & I_2 & etc), will return an array506         * containing I_1 and I_2.507         *508         * @return other bounds for this type, these bounds can only be only interfaces as the JLS says,509         * empty array if no other bound declared.510         */511        public Type[] interfaceBounds() {512            Type[] interfaceBounds = new Type[typeVariable.getBounds().length - 1];513            System.arraycopy(typeVariable.getBounds(), 1, interfaceBounds, 0, typeVariable.getBounds().length - 1);514            return interfaceBounds;515        }516517        @Override518        public boolean equals(Object o) {519            if (this == o) return true;520            if (o == null || getClass() != o.getClass()) return false;521522            return typeVariable.equals(((TypeVarBoundedType) o).typeVariable);523524        }525526        @Override527        public int hashCode() {528            return typeVariable.hashCode();529        }530531        @Override532        public String toString() {533            final StringBuilder sb = new StringBuilder();534            sb.append("{firstBound=").append(firstBound());535            sb.append(", interfaceBounds=").append(Arrays.deepToString(interfaceBounds()));536            sb.append('}');537            return sb.toString();538        }539540        public TypeVariable typeVariable() {541            return typeVariable;542        }543    }544545    /**546     * Type representing bounds of a wildcard, allows to keep all bounds information.547     *548     * <p>The JLS says that lower bound and upper bound are mutually exclusive, and that multiple bounds549     * are not allowed.550     *551     * @see <a href="http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.4">http://docs.oracle.com/javase/specs/jls/se5.0/html/typesValues.html#4.4</a>552     */553    public static class WildCardBoundedType implements BoundedType {554        private WildcardType wildcard;555556557        public WildCardBoundedType(WildcardType wildcard) {558            this.wildcard = wildcard;559        }560561        /**562         * @return The first bound, either a type or a reference to a TypeVariable563         */564        public Type firstBound() {565            Type[] lowerBounds = wildcard.getLowerBounds();566            Type[] upperBounds = wildcard.getUpperBounds();567568            return lowerBounds.length != 0 ? lowerBounds[0] : upperBounds[0];569        }570571        /**572         * @return An empty array as, wildcard don't support multiple bounds.573         */574        public Type[] interfaceBounds() {575            return new Type[0];576        }577578        @Override579        public boolean equals(Object o) {580            if (this == o) return true;581            if (o == null || getClass() != o.getClass()) return false;582583            return wildcard.equals(((TypeVarBoundedType) o).typeVariable);584585        }586587        @Override588        public int hashCode() {589            return wildcard.hashCode();590        }591592        @Override593        public String toString() {594            final StringBuilder sb = new StringBuilder();595            sb.append("{firstBound=").append(firstBound());596            sb.append(", interfaceBounds=[]}");597            return sb.toString();598        }599600        public WildcardType wildCard() {601            return wildcard;602        }603    }604605}606607
...

firstBound

Using AI Code Generation

1import java.lang.reflect.Method;2import java.util.Arrays;3import org.mockito.internal.util.reflection.GenericMetadataSupport;4public class GenericMetadataSupportTest {5    public static void main(String[] args) throws Exception {6        Method method = GenericMetadataSupportTest.class.getMethod("method", String.class);7        GenericMetadataSupport genericMetadataSupport = new GenericMetadataSupport(method);8        System.out.println("First bound: " + genericMetadataSupport.firstBound());9    }10    public <T> void method(T t) {11    }12}

firstBound

Using AI Code Generation

1import org.mockito.internal.util.reflection.GenericMetadataSupport2import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType3def genericMetadataSupport = new GenericMetadataSupport()4def genericType = genericMetadataSupport.firstBound(new GenericType(List.class))5import org.mockito.internal.util.reflection.GenericMetadataSupport6import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType7def genericMetadataSupport = new GenericMetadataSupport()8def genericType = genericMetadataSupport.firstBound(new GenericType(List.class))9import org.mockito.internal.util.reflection.GenericMetadataSupport10import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType11def genericMetadataSupport = new GenericMetadataSupport()12def genericType = genericMetadataSupport.firstBound(new GenericType(List.class))13import org.mockito.internal.util.reflection.GenericMetadataSupport14import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType15def genericMetadataSupport = new GenericMetadataSupport()16def genericType = genericMetadataSupport.firstBound(new GenericType(List.class))17import org.mockito.internal.util.reflection.GenericMetadataSupport18import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType19def genericMetadataSupport = new GenericMetadataSupport()20def genericType = genericMetadataSupport.firstBound(new GenericType(List.class))21import org.mockito.internal.util.reflection.GenericMetadataSupport22import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType23def genericMetadataSupport = new GenericMetadataSupport()24def genericType = genericMetadataSupport.firstBound(new GenericType(List.class))25import org.mockito.internal.util.reflection.GenericMetadataSupport26import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType27def genericMetadataSupport = new GenericMetadataSupport()

firstBound

Using AI Code Generation

1import org.mockito.internal.util.reflection.GenericMetadataSupport2import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType3class GenericMetadataSupportTest {4    def "test firstBound"() {5        def genericMetadataSupport = new GenericMetadataSupport()6        def result = genericMetadataSupport.firstBound(GenericType.of(MyType.class))7    }8    static class MyType<T extends String> {9    }10}

firstBound

Using AI Code Generation

1    private static final String[] GENERIC_METADATA_SUPPORT_FIRST_BOUND = {2            "package org.mockito.internal.util.reflection;",3            "import java.lang.reflect.TypeVariable;",4            "import java.util.Arrays;",5            "import java.util.HashMap;",6            "import java.util.Map;",7            "import java.util.Set;",8            "public class GenericMetadataSupport {",9            "    private final Class<?> rawType;",10            "    private final TypeVariable<?>[] typeParameters;",11            "    private final Map<TypeVariable<?>, Type> typeArguments;",12            "    public GenericMetadataSupport(Class<?> rawType, TypeVariable<?>[] typeParameters, Map<TypeVariable<?>, Type> typeArguments) {",13            "        this.rawType = rawType;",14            "        this.typeParameters = typeParameters;",15            "        this.typeArguments = typeArguments;",16            "    }",17            "    public static GenericMetadataSupport of(Class<?> rawType, TypeVariable<?>[] typeParameters, Map<TypeVariable<?>, Type> typeArguments) {",18            "        return new GenericMetadataSupport(rawType, typeParameters, typeArguments);",19            "    }",20            "    public static GenericMetadataSupport of(Class<?> rawType, TypeVariable<?>[] typeParameters, Type[] actualTypeArguments) {",21            "        Map<TypeVariable<?>, Type> typeArguments = new HashMap<TypeVariable<?>, Type>();",22            "        for (int i = 0; i < typeParameters.length; i++) {",23            "            typeArguments.put(typeParameters[i], actualTypeArguments[i]);",24            "        }",25            "        return new GenericMetadataSupport(rawType, typeParameters, typeArguments);",26            "    }",27            "    public static GenericMetadataSupport of(Class<?> rawType, TypeVariable<?>[] typeParameters, Type[] actualTypeArguments, Type ownerType) {",28            "        Map<TypeVariable<?>, Type> typeArguments = new HashMap<TypeVariable<?>, Type>();",29            "        for (int i = 0; i < typeParameters.length; i++) {",30            "            typeArguments.put(typeParameters[i], actualTypeArguments[i]);",31            "        }",32            "        if (ownerType != null && ownerType instanceof ParameterizedType) {",33            "            ParameterizedType parameterizedOwnerType = (ParameterizedType) ownerType;",

firstBound

Using AI Code Generation

1import org.mockito.internal.util.reflection.GenericMetadataSupport2import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType3def genericType = GenericMetadataSupport.firstBound(GenericType.of(Iterable.class))4import org.mockito.internal.util.reflection.ParameterizedTypeImpl5def parameterizedType = new ParameterizedTypeImpl(Iterable.class, [String.class])6def genericType = GenericMetadataSupport.firstBound(parameterizedType)7import org.mockito.internal.util.reflection.GenericMetadataSupport8import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType9def genericType = GenericMetadataSupport.firstBound(GenericType.of(Iterable.class))10import org.mockito.internal.util.reflection.ParameterizedTypeImpl11def parameterizedType = new ParameterizedTypeImpl(Iterable.class, [String.class])12def genericType = GenericMetadataSupport.firstBound(parameterizedType)13import org.mockito.internal.util.reflection.GenericMetadataSupport14import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType15def genericType = GenericMetadataSupport.firstBound(GenericType.of(Iterable.class))16import org.mockito.internal.util.reflection.ParameterizedTypeImpl17def parameterizedType = new ParameterizedTypeImpl(Iterable.class, [String.class])18def genericType = GenericMetadataSupport.firstBound(parameterizedType)19import org.mockito.internal.util.reflection.GenericMetadataSupport20import org.mockito.internal.util.reflection.GenericMetadataSupport.GenericType21def genericType = GenericMetadataSupport.firstBound(GenericType.of(Iterable.class))

firstBound

Using AI Code Generation

1List<String> mock = mock(List.class);2Type firstBound = GenericMetadataSupport.firstBound(mock.getClass());3System.out.println(firstBound);4List mock2 = mock(List.class);5Type firstBound2 = GenericMetadataSupport.firstBound(mock2.getClass());6System.out.println(firstBound2);7List mock3 = mock(List.class);8Type firstBound3 = GenericMetadataSupport.firstBound(mock3.getClass());9System.out.println(firstBound3);10List mock4 = mock(List.class);11Type firstBound4 = GenericMetadataSupport.firstBound(mock4.getClass());12System.out.println(firstBound4);13List mock5 = mock(List.class);14Type firstBound5 = GenericMetadataSupport.firstBound(mock5.getClass());15System.out.println(firstBound5);16List mock6 = mock(List.class);17Type firstBound6 = GenericMetadataSupport.firstBound(mock6.getClass());18System.out.println(firstBound6);19List mock7 = mock(List.class);20Type firstBound7 = GenericMetadataSupport.firstBound(mock7.getClass());21System.out.println(firstBound7);22List mock8 = mock(List.class);23Type firstBound8 = GenericMetadataSupport.firstBound(mock8.getClass());24System.out.println(firstBound8);

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