content: /*
   * Created on May 18, 2007
   * 
   * 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.
   * 
   * Copyright @2007-2013 the original author or authors.
   */
  package org.fest.reflect.core;
  
  import org.fest.reflect.reference.TypeRef;
  import org.junit.Test;
  
  import java.math.BigDecimal;
  import java.util.Iterator;
  import java.util.List;
  
  import static java.math.BigDecimal.ONE;
  import static org.fest.util.Lists.newArrayList;
  import static org.junit.Assert.assertEquals;
  
  /**
   * Tests for {@link Reflection#method(String)}.
   *
   * @author Alex Ruiz
   */
  public class Reflection_method_Test {
    @Test
    public void should_invoke_method_without_parameters_and_return_type_void() {
      List<String> list = newArrayList();
      list.add("Test");
      Reflection.method("clear").in(list).invoke();
      assertEquals(0, list.size());
    }
  
    @Test
    public void should_invoke_method_with_parameters_and_return_type_void() {
      List<String> list = newArrayList();
      Reflection.method("add").withParameterTypes(int.class, Object.class).in(list).invoke(0, "Test");
      assertEquals(1, list.size());
      assertEquals("Test", list.get(0));
    }
  
    @Test
    public void should_invoke_method_without_parameters_and_primitive_return_type() {
      List<String> list = newArrayList();
      list.add("Test");
      int size = Reflection.method("size").withReturnType(int.class).in(list).invoke();
      assertEquals(1, size);
    }
  
    @Test
    public void should_invoke_method_without_parameters_and_Object_return_type() {
      List<String> list = newArrayList();
      list.add("Test");
      Object[] array = Reflection.method("toArray").withReturnType(Object[].class).in(list).invoke();
      assertEquals(1, array.length);
      assertEquals("Test", array[0]);
    }
  
    @Test
    public void should_invoke_method_without_parameters_and_TypeRef_return_type() {
      List<String> list = newArrayList();
      list.add("Test");
      Iterator<String> iterator =
          Reflection.method("iterator").withReturnType(new TypeRef<Iterator<String>>() {
          }).in(list).invoke();
      assertEquals(list, newArrayList(iterator));
    }
  
    @Test
    public void should_invoke_method_with_primitive_parameters_and_primitive_return_type() {
      Counter counter = new Counter();
      counter.value = 2;
      int result = Reflection.method("add").withReturnType(int.class).withParameterTypes(int.class).in(counter).invoke(6);
      assertEquals(8, result);
    }
  
    @Test
    public void should_invoke_method_with_Object_parameters_and_Object_return_type() {
      BigDecimal number = new BigDecimal("10.00");
      BigDecimal result = Reflection.method("add").withReturnType(BigDecimal.class)
          .withParameterTypes(BigDecimal.class)
          .in(number)
          .invoke(ONE);
      assertEquals(new BigDecimal("11.00"), result);
    }
  
    static class Counter {
      int value;
  
      int add(int value) {
        this.value += value;
        return this.value;
      }
    }
  }
  