JUnitDependencyScopeSuggester.java

/*
 * Copyright 2000-2012 JetBrains s.r.o.
 *
 * 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.intellij.execution.junit;

import com.intellij.openapi.roots.DependencyScope;
import com.intellij.openapi.roots.LibraryDependencyScopeSuggester;
import com.intellij.openapi.roots.OrderRootType;
import com.intellij.openapi.roots.libraries.Library;
import com.intellij.openapi.roots.libraries.LibraryUtil;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Collections;

/**
 * @author nik
 */
public class JUnitDependencyScopeSuggester extends LibraryDependencyScopeSuggester {
  private static final String[] JUNIT_JAR_MARKERS = {
    "org.junit.Test", "junit.framework.TestCase", "org.hamcrest.Matcher", "org.hamcrest.Matchers"
  };

  @Nullable
  @Override
  public DependencyScope getDefaultDependencyScope(@NotNull Library library) {
    VirtualFile[] files = library.getFiles(OrderRootType.CLASSES);
    if (files.length == 0) return null;
    for (VirtualFile file : files) {
      if (!isTestJarRoot(file)) {
        return null;
      }
    }
    return DependencyScope.TEST;
  }

  private static boolean isTestJarRoot(VirtualFile file) {
    for (String marker : JUNIT_JAR_MARKERS) {
      if (LibraryUtil.isClassAvailableInLibrary(Collections.singletonList(file), marker)) {
        return true;
      }
    }
    return false;
  }
}