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// Copyright 2014 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.devtools.build.lib.util;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import com.google.common.testing.EqualsTester;
import com.google.devtools.common.options.OptionsParsingException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* A test for {@link RegexFilter}.
*/
@RunWith(JUnit4.class)
public class RegexFilterTest {
protected RegexFilter filter = null;
protected RegexFilter createFilter(String filterString) throws OptionsParsingException {
filter = new RegexFilter.RegexFilterConverter().convert(filterString);
return filter;
}
protected void assertIncluded(String value) {
assertTrue(filter.isIncluded(value));
}
protected void assertExcluded(String value) {
assertFalse(filter.isIncluded(value));
}
@Test
public void emptyFilter() throws Exception {
createFilter("");
assertIncluded("a/b/c");
assertIncluded("d");
}
@Test
public void inclusions() throws Exception {
createFilter("a/b,+^c,_test$");
assertEquals("(?:(?>a/b)|(?>^c)|(?>_test$))", filter.toString());
assertIncluded("a/b");
assertIncluded("a/b/c");
assertIncluded("c");
assertIncluded("c/d");
assertIncluded("e/a/b");
assertIncluded("f/1/2/3/_test");
assertExcluded("a");
assertExcluded("a/c");
assertExcluded("d");
assertExcluded("e/f/g");
assertExcluded("f/_test2");
}
@Test
public void exclusions() throws Exception {
createFilter("-a/b,-^c,-_test$");
assertEquals("-(?:(?>a/b)|(?>^c)|(?>_test$))", filter.toString());
assertExcluded("a/b");
assertExcluded("a/b/c");
assertExcluded("c");
assertExcluded("c/d");
assertExcluded("f/a/b/d");
assertExcluded("f/a_test");
assertIncluded("a");
assertIncluded("a/c");
assertIncluded("d");
assertIncluded("e/f/g");
assertIncluded("f/a_test_case");
}
@Test
public void inclusionsAndExclusions() throws Exception {
createFilter("a,-^c,,-,+,d,+a/b/c,-a/b,a/b/d");
assertEquals("(?:(?>a)|(?>d)|(?>a/b/c)|(?>a/b/d)),-(?:(?>^c)|(?>a/b))", filter.toString());
assertIncluded("a");
assertIncluded("a/c");
assertExcluded("a/b");
assertExcluded("a/b/c"); // Exclusions take precedence over inclusions. Order is not important.
assertExcluded("a/b/d"); // Exclusions take precedence over inclusions. Order is not important.
assertExcluded("a/c/a/b/d");
assertExcluded("c");
assertExcluded("c/d");
assertIncluded("d/e");
assertExcluded("e");
}
@Test
public void commas() throws Exception {
createFilter("a\\,b,c\\,d");
assertEquals("(?:(?>a\\,b)|(?>c\\,d))", filter.toString());
assertIncluded("a,b");
assertIncluded("c,d");
assertExcluded("a");
assertExcluded("b,c");
assertExcluded("d");
}
@Test
public void invalidExpression() throws Exception {
try {
createFilter("*a");
fail(); // OptionsParsingException should be thrown.
} catch (OptionsParsingException e) {
assertThat(e.getMessage())
.contains("Failed to build valid regular expression: Dangling meta character '*' "
+ "near index");
}
}
@Test
public void equals() throws Exception {
new EqualsTester()
.addEqualityGroup(createFilter("a,b,c"), createFilter("a,b,c"))
.addEqualityGroup(createFilter("a,b,c,d"))
.addEqualityGroup(createFilter("a,b,-c"), createFilter("a,b,-c"))
.addEqualityGroup(createFilter("a,b,-c,-d"))
.addEqualityGroup(createFilter("-a,-b,-c"), createFilter("-a,-b,-c"))
.addEqualityGroup(createFilter("-a,-b,-c,-d"))
.addEqualityGroup(createFilter(""), createFilter(""))
.testEquals();
}
}
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