// 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.Request;
import org.junit.runner.Runner;
import org.junit.runner.manipulation.Filter;
import org.junit.runner.manipulation.NoTestsRemainException;
/**
* Common filters.
*/
@Deprecated
public final class Filters {
private Filters() {}
/**
* Returns a filter that evaluates to {@code true} if both of its
* components evaluates to {@code true}. The filters are evaluated in
* order, and evaluation will be "short-circuited" if the first filter
* returns {@code false}.
*/
public static Filter and(Filter delegate1, Filter delegate2) {
return delegate1 == Filter.ALL ? delegate2
: (delegate2 == Filter.ALL ? delegate1
: new AndFilter(delegate1, delegate2));
}
/**
* Returns a Request that only contains those tests that should run when
* a filter is applied, filtering out all empty suites.<p>
*
* Note that if the request passed into this method caches its runner,
* that runner will be modified to use the given filter. To be safe,
* do not use the passed-in request after calling this method.
*
* @param request Request to filter
* @param filter Filter to apply
* @return request
* @throws NoTestsRemainException if the applying the filter removes all tests
*/
public static Request apply(Request request, Filter filter) throws NoTestsRemainException {
filter = new SuiteTrimmingFilter(filter);
Runner runner = request.getRunner();
filter.apply(runner);
return Request.runner(runner);
}
}