text: /*
   * Copyright 2002-2017 the original author or authors.
   *
   * 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
   *
   *      https://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 org.springframework.test.context.junit4.statements;
  
  import java.lang.annotation.Annotation;
  import java.lang.reflect.Method;
  
  import org.junit.AssumptionViolatedException;
  import org.junit.runners.model.Statement;
  
  import org.springframework.core.annotation.AnnotatedElementUtils;
  import org.springframework.lang.Nullable;
  import org.springframework.test.annotation.IfProfileValue;
  import org.springframework.test.annotation.ProfileValueUtils;
  import org.springframework.util.Assert;
  
  /**
   * {@code ProfileValueChecker} is a custom JUnit {@link Statement} that checks
   * whether a test class or test method is enabled in the current environment
   * via Spring's {@link IfProfileValue @IfProfileValue} annotation.
   *
   * @author Sam Brannen
   * @author Philippe Marschall
   * @since 4.2
   * @see #evaluate()
   * @see IfProfileValue
   * @see ProfileValueUtils
   */
  public class ProfileValueChecker extends Statement {
  
  	private final Statement next;
  
  	private final Class<?> testClass;
  
  	@Nullable
  	private final Method testMethod;
  
  
  	/**
  	 * Construct a new {@code ProfileValueChecker} statement.
  	 * @param next the next {@code Statement} in the execution chain;
  	 * never {@code null}
  	 * @param testClass the test class to check; never {@code null}
  	 * @param testMethod the test method to check; may be {@code null} if
  	 * this {@code ProfileValueChecker} is being applied at the class level
  	 */
  	public ProfileValueChecker(Statement next, Class<?> testClass, @Nullable Method testMethod) {
  		Assert.notNull(next, "The next statement must not be null");
  		Assert.notNull(testClass, "The test class must not be null");
  		this.next = next;
  		this.testClass = testClass;
  		this.testMethod = testMethod;
  	}
  
  
  	/**
  	 * Determine if the test specified by arguments to the
  	 * {@linkplain #ProfileValueChecker constructor} is <em>enabled</em> in
  	 * the current environment, as configured via the {@link IfProfileValue
  	 * &#064;IfProfileValue} annotation.
  	 * <p>If the test is not annotated with {@code @IfProfileValue} it is
  	 * considered enabled.
  	 * <p>If a test is not enabled, this method will abort further evaluation
  	 * of the execution chain with a failed assumption; otherwise, this method
  	 * will simply evaluate the next {@link Statement} in the execution chain.
  	 * @see ProfileValueUtils#isTestEnabledInThisEnvironment(Class)
  	 * @see ProfileValueUtils#isTestEnabledInThisEnvironment(Method, Class)
  	 * @throws AssumptionViolatedException if the test is disabled
  	 * @throws Throwable if evaluation of the next statement fails
  	 */
  	@Override
  	public void evaluate() throws Throwable {
  		if (this.testMethod == null) {
  			if (!ProfileValueUtils.isTestEnabledInThisEnvironment(this.testClass)) {
  				Annotation ann = AnnotatedElementUtils.findMergedAnnotation(this.testClass, IfProfileValue.class);
  				throw new AssumptionViolatedException(String.format(
  						"Profile configured via [%s] is not enabled in this environment for test class [%s].",
  						ann, this.testClass.getName()));
  			}
  		}
  		else {
  			if (!ProfileValueUtils.isTestEnabledInThisEnvironment(this.testMethod, this.testClass)) {
  				throw new AssumptionViolatedException(String.format(
  						"Profile configured via @IfProfileValue is not enabled in this environment for test method [%s].",
  						this.testMethod));
  			}
  		}
  
  		this.next.evaluate();
  	}
  
  }
  