content: /*
   * Created on Mar 19, 2009
   *
   * 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 @2009 the original author or authors.
   */
  package org.fest.swing.junit.ant;
  
  import static org.fest.reflect.core.Reflection.method;
  import static org.fest.swing.junit.ant.CommonConstants.UNKNOWN;
  
  import java.lang.reflect.Method;
  
  import junit.framework.Test;
  import junit.framework.TestCase;
  
  /**
   * Understands utility methods related to JUnit tests.
   *
   * @author Alex Ruiz
   */
  final class Tests {
  
    private static final String JUNIT4_TEST_CASE_FACADE_TYPE = "junit.framework.JUnit4TestCaseFacade";
  
    private static Method testCaseName = nameMethodIn(TestCase.class);
  
    static String testMethodNameFrom(Test test) {
      if (test == null) return UNKNOWN;
      if (isJUnit4TestCaseFacade(test)) return trimClassNameFromMethodName(test.toString());
      if (test instanceof TestCase && testCaseName != null) return invokeNameMethod(testCaseName, test);
      return invokeNameMethod(nameMethodIn(test.getClass()), test);
    }
  
    private static boolean isJUnit4TestCaseFacade(Test test) {
      return isJunit4TestCaseFacade(test);
    }
  
    // Self-describing as of JUnit 4 (#38811). But trim "(ClassName)".
    private static String trimClassNameFromMethodName(String name) {
      if (!name.endsWith(")")) return name;
      return name.substring(0, name.lastIndexOf('('));
    }
  
    private static Method nameMethodIn(Class<?> type) {
      return methodInType(type, "getName", "name");
    }
  
    private static Method methodInType(Class<?> type, String name, String alternativeName) {
      Method m = methodInType(type, name);
      if (m != null) return m;
      return methodInType(type, alternativeName);
    }
  
    private static Method methodInType(Class<?> type, String name) {
      try {
        return type.getMethod(name, new Class[0]);
      } catch (Exception e) {
        return null;
      }
    }
  
    private static String invokeNameMethod(Method m, Object target) {
      if (m == null || m.getReturnType() != String.class) return UNKNOWN;
      try {
        return (String) m.invoke(target, new Object[0]);
      } catch (Exception e) {
        return UNKNOWN;
      }
    }
  
    static String testClassNameFrom(Test test) {
      String className = classNameOf(test);
      if (className.endsWith("VmExitErrorTest")) return classNameFromVmExitErrorTest(test);
      if (isJunit4TestCaseFacade(test)) return testClassNameFromJUnit4TestCaseFacade(test);
      return className;
    }
  
    private static String classNameFromVmExitErrorTest(Test test) {
      try {
        return method("getClassName").withReturnType(String.class).in(test).invoke();
      } catch (Exception e) {
        return UNKNOWN;
      }
    }
  
    private static boolean isJunit4TestCaseFacade(Test test) {
      return classNameOf(test).equals(JUNIT4_TEST_CASE_FACADE_TYPE);
    }
  
    // JUnit 4 wraps solo tests this way. We can extract the original test name with a little hack.
    private static String testClassNameFromJUnit4TestCaseFacade(Test test) {
      String name = test.toString();
      int i = name.lastIndexOf('(');
      if (i == -1) return classNameOf(test);
      if (!name.endsWith(")")) return classNameOf(test);
      return name.substring(i + 1, name.length() - 1);
    }
  
    private static String classNameOf(Test test) {
      return test.getClass().getName();
    }
  }
  