com.fitbur.jestify.junit.spring.injector.TypeMockInjector.java Source code

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Here is the source code for com.fitbur.jestify.junit.spring.injector.TypeMockInjector.java

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/*
 * Copyright 2015 Sharmarke Aden <saden1 at gmail.org>.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.fitbur.jestify.junit.spring.injector;

import com.fitbur.jestify.api.Mock;
import com.fitbur.jestify.core.TestContext;
import com.fitbur.jestify.core.TestInjector;
import com.fitbur.jestify.core.TestReifier;
import com.fitbur.jestify.core.descriptor.DescriptorKey;
import com.fitbur.jestify.core.descriptor.FieldDescriptor;
import com.fitbur.jestify.core.descriptor.ParameterDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.Parameter;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.Map;
import java.util.Optional;
import javax.inject.Provider;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.core.ResolvableType;

/**
 *
 * @author saden1
 */
public class TypeMockInjector implements TestInjector {

    private final TestContext context;
    private final TestReifier testReifier;
    private final AnnotationConfigApplicationContext applicationContext;
    private final FieldDescriptor fieldDescriptor;
    private final Object[] arguments;

    public TypeMockInjector(TestContext context, TestReifier testReifier,
            AnnotationConfigApplicationContext applicationContext, FieldDescriptor fieldDescriptor,
            Object[] arguments) {
        this.context = context;
        this.testReifier = testReifier;
        this.applicationContext = applicationContext;
        this.fieldDescriptor = fieldDescriptor;
        this.arguments = arguments;
    }

    @Override
    public void inject() {
        Map<DescriptorKey, ParameterDescriptor> parameterDescriptors = context.getParamaterDescriptors();
        Field field = fieldDescriptor.getField();

        Mock mock = fieldDescriptor.getMock().get();
        Type fieldType = field.getGenericType();
        String fieldName = field.getName();
        DescriptorKey descriptorKey = new DescriptorKey(fieldType, fieldName);

        //if there is a parameter descriptor that matches the field then lets use that
        if (parameterDescriptors.containsKey(descriptorKey)) {
            ParameterDescriptor descriptor = parameterDescriptors.get(descriptorKey);
            Parameter parameter = descriptor.getParameter();
            Integer index = descriptor.getIndex();
            ResolvableType resolver = ResolvableType.forType(fieldType);

            Class rawType;

            if (resolver.hasGenerics()) {
                if (resolver.isAssignableFrom(Provider.class) || resolver.isAssignableFrom(Optional.class)) {
                    rawType = resolver.getRawClass();
                } else {
                    rawType = resolver.resolve();
                }
            } else {
                rawType = (Class) fieldType;
            }
            Object instance = testReifier.reifyField(fieldDescriptor, descriptor);
            arguments[index] = instance;
        } else {
            //otherwise find the right parameter based on the type of the field
            Collection<ParameterDescriptor> descriptors = parameterDescriptors.values();
            for (ParameterDescriptor descriptor : descriptors) {
                Parameter parameter = descriptor.getParameter();
                Type parameterType = parameter.getParameterizedType();
                Integer index = descriptor.getIndex();

                ResolvableType resolver = ResolvableType.forType(parameterType);

                Class rawType;

                if (resolver.hasGenerics()) {
                    if (resolver.isAssignableFrom(Provider.class) || resolver.isAssignableFrom(Optional.class)) {
                        rawType = resolver.getRawClass();
                    } else {
                        rawType = resolver.resolve();
                    }
                } else {
                    rawType = resolver.resolve();
                }

                if (arguments[index] != null) {
                    continue;
                }

                if (parameterType.equals(fieldType)) {
                    Object instance = testReifier.reifyField(fieldDescriptor, descriptor);
                    arguments[index] = instance;
                    break;
                }

            }
        }

    }

}