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// Copyright (C) 2018 The Android Open Source Project
//
// 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.gerrit.server.ioutil;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.collect.ImmutableList;
import java.util.List;
import org.junit.Test;
public class RegexListSearcherTest {
private static final ImmutableList<String> EMPTY = ImmutableList.of();
@Test
public void emptyList() {
assertSearchReturns(EMPTY, "pat", EMPTY);
}
@Test
public void anchors() {
ImmutableList<String> list = ImmutableList.of("foo");
assertSearchReturns(list, "^f.*", list);
assertSearchReturns(list, "^f.*o$", list);
assertSearchReturns(list, "f.*o$", list);
assertSearchReturns(list, "f.*o$", list);
assertSearchReturns(EMPTY, "^.*\\$", list);
}
@Test
public void noCommonPrefix() {
ImmutableList<String> list = ImmutableList.of("bar", "foo", "quux");
assertSearchReturns(ImmutableList.of("foo"), "f.*", list);
assertSearchReturns(ImmutableList.of("foo"), ".*o.*", list);
assertSearchReturns(ImmutableList.of("bar", "foo", "quux"), ".*[aou].*", list);
}
@Test
public void commonPrefix() {
ImmutableList<String> list = ImmutableList.of("bar", "baz", "foo1", "foo2", "foo3", "quux");
assertSearchReturns(ImmutableList.of("bar", "baz"), "b.*", list);
assertSearchReturns(ImmutableList.of("foo1", "foo2"), "foo[12]", list);
assertSearchReturns(ImmutableList.of("foo1", "foo2", "foo3"), "foo.*", list);
assertSearchReturns(ImmutableList.of("quux"), "q.*", list);
}
private void assertSearchReturns(List<?> expected, String re, List<String> inputs) {
assertThat(inputs).isInOrder();
assertThat(RegexListSearcher.ofStrings(re).search(inputs))
.containsExactlyElementsIn(expected)
.inOrder();
}
}