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Assertj-Swing JUnit4 extension

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/*
 * 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 2012-2018 the original author or authors.
 */
package org.assertj.swing.junit.runner;

import java.lang.reflect.Method;

/**
 * Understands formatting utilities for AssertJ-Swing JUnit runners.
 *
 * @author Alex Ruiz
 * @author Yvonne Wang
 */
public final class Formatter {

  /**
   * Returns the name of a test given its class and method names.
   *
   * @param type the name of the test class.
   * @param method the name of the test method.
   * @return the name of a test.
   */
  public static String testNameFrom(Class type, Method method) {
    return type.getName() + "." + method.getName() + format(method.getParameterTypes());
  }

  private static String format(Class[] parameterTypes) {
    if (parameterTypes == null || parameterTypes.length == 0)
      return "";
    StringBuilder b = new StringBuilder("(");
    for (int i = 0; i < parameterTypes.length; i++) {
      b.append(parameterTypes[i].getName());
      if (i < parameterTypes.length - 1)
        b.append(", ");
    }
    b.append(")");
    return b.toString();
  }

  private Formatter() {}
}