| // Copyright 2015 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.testing.junit.junit4.runner; |
| |
| import org.junit.runner.Description; |
| import org.junit.runner.manipulation.Filter; |
| |
| /** |
| * A filter that decorates another filter, filtering out any suites |
| * that contain no tests. |
| */ |
| public final class SuiteTrimmingFilter extends Filter { |
| private final Filter delegate; |
| |
| public SuiteTrimmingFilter(Filter delegate) { |
| if (delegate == null) { |
| throw new NullPointerException(); |
| } |
| this.delegate = delegate; |
| } |
| |
| @Override |
| public String describe() { |
| return delegate.describe(); |
| } |
| |
| @Override |
| public final boolean shouldRun(Description description) { |
| if (!delegate.shouldRun(description)) { |
| return false; |
| } |
| |
| if (description.isTest()) { |
| return true; |
| } |
| |
| // explicitly check if any children want to run |
| for (Description each : description.getChildren()) { |
| if (shouldRun(each)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |