testing/src/com/google/idea/testing/EdtRule.java

/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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.google.idea.testing;

import com.intellij.testFramework.EdtTestUtil;
import com.intellij.testFramework.TestRunnerUtil;
import com.intellij.util.ThrowableRunnable;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;

/** Rule to run tests on the EDT. */
public class EdtRule implements TestRule {

  @Override
  public Statement apply(Statement base, Description description) {
    return new Statement() {
      @Override
      public void evaluate() throws Throwable {
        TestRunnerUtil.replaceIdeEventQueueSafely();
        EdtTestUtil.runInEdtAndWait((ThrowableRunnable<Throwable>) base::evaluate);
      }
    };
  }
}