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// Copyright 2006 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.syntax;
import static org.junit.Assert.assertEquals;
import com.google.devtools.build.lib.events.Location.LineAndColumn;
import com.google.devtools.build.lib.util.Pair;
import com.google.devtools.build.lib.vfs.PathFragment;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link LineNumberTable}.
*/
@RunWith(JUnit4.class)
public class LineNumberTableTest {
private LineNumberTable create(String buffer) {
return LineNumberTable.create(buffer.toCharArray(), new PathFragment("/fake/file"));
}
@Test
public void testEmpty() {
LineNumberTable table = create("");
assertEquals(new LineAndColumn(1, 1), table.getLineAndColumn(0));
}
@Test
public void testNewline() {
LineNumberTable table = create("\n");
assertEquals(new LineAndColumn(1, 1), table.getLineAndColumn(0));
assertEquals(new LineAndColumn(2, 1), table.getLineAndColumn(1));
}
@Test
public void testOneLiner() {
LineNumberTable table = create("foo");
assertEquals(new LineAndColumn(1, 1), table.getLineAndColumn(0));
assertEquals(new LineAndColumn(1, 2), table.getLineAndColumn(1));
assertEquals(new LineAndColumn(1, 3), table.getLineAndColumn(2));
assertEquals(Pair.of(0, 3), table.getOffsetsForLine(1));
}
@Test
public void testMultiLiner() {
LineNumberTable table = create("\ntwo\nthree\n\nfive\n");
// \n
assertEquals(new LineAndColumn(1, 1), table.getLineAndColumn(0));
assertEquals(Pair.of(0, 1), table.getOffsetsForLine(1));
// two\n
assertEquals(new LineAndColumn(2, 1), table.getLineAndColumn(1));
assertEquals(new LineAndColumn(2, 2), table.getLineAndColumn(2));
assertEquals(new LineAndColumn(2, 3), table.getLineAndColumn(3));
assertEquals(new LineAndColumn(2, 4), table.getLineAndColumn(4));
assertEquals(Pair.of(1, 5), table.getOffsetsForLine(2));
// three\n
assertEquals(new LineAndColumn(3, 1), table.getLineAndColumn(5));
assertEquals(new LineAndColumn(3, 6), table.getLineAndColumn(10));
assertEquals(Pair.of(5, 11), table.getOffsetsForLine(3));
// \n
assertEquals(new LineAndColumn(4, 1), table.getLineAndColumn(11));
assertEquals(Pair.of(11, 12), table.getOffsetsForLine(4));
// five\n
assertEquals(new LineAndColumn(5, 1), table.getLineAndColumn(12));
assertEquals(new LineAndColumn(5, 5), table.getLineAndColumn(16));
assertEquals(Pair.of(12, 17), table.getOffsetsForLine(5));
}
@Test
public void testHashLine() {
String data = "#\n"
+ "#line 67 \"/foo\"\n"
+ "cc_binary(name='a',\n"
+ " srcs=[])\n"
+ "#line 23 \"/ba.r\"\n"
+ "vardef(x,y)\n";
LineNumberTable table = create(data);
// Note: no attempt is made to return accurate column information.
assertEquals(new LineAndColumn(67, 1), table.getLineAndColumn(data.indexOf("cc_binary")));
assertEquals(new LineAndColumn(67, 1), table.getLineAndColumn(data.indexOf("name='a'")));
assertEquals("/fake/file", table.getPath(0).toString());
// Note: newlines ignored; "srcs" is still (intentionally) considered to be
// on L67. Consider the alternative, and assume that rule 'a' is 50 lines
// when pretty-printed: the last line of 'a' would be reported as line 67 +
// 50, which may be in a part of the original BUILD file that has nothing
// to do with this rule. In other words, the size of rules before and
// after pretty printing are essentially unrelated.
assertEquals(new LineAndColumn(67, 1), table.getLineAndColumn(data.indexOf("srcs")));
assertEquals("/foo", table.getPath(data.indexOf("srcs")).toString());
assertEquals(Pair.of(2, 57), table.getOffsetsForLine(67));
assertEquals(new LineAndColumn(23, 1), table.getLineAndColumn(data.indexOf("vardef")));
assertEquals(new LineAndColumn(23, 1), table.getLineAndColumn(data.indexOf("x,y")));
assertEquals("/ba.r", table.getPath(data.indexOf("x,y")).toString());
assertEquals(Pair.of(57, 86), table.getOffsetsForLine(23));
assertEquals(Pair.of(0, 0), table.getOffsetsForLine(42));
}
}
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