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/*
* Copyright 2007 The Closure Compiler Authors.
*
* 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.javascript.jscomp;
import com.google.common.collect.ImmutableList;
import junit.framework.TestCase;
/**
*/
public class JSCompilerSourceExcerptProviderTest extends TestCase {
private SourceExcerptProvider provider;
@Override
protected void setUp() throws Exception {
SourceFile foo = SourceFile.fromCode("foo",
"foo:first line\nfoo:second line\nfoo:third line\n");
SourceFile bar = SourceFile.fromCode("bar",
"bar:first line\nbar:second line\nbar:third line\nbar:fourth line\n");
SourceFile foo2 = SourceFile.fromCode("foo2",
"foo2:first line\nfoo2:second line\nfoo2:third line");
Compiler compiler = new Compiler();
CompilerOptions options = new CompilerOptions();
compiler.init(
ImmutableList.<SourceFile>of(),
ImmutableList.of(foo, bar, foo2),
options);
this.provider = compiler;
}
public void testExcerptOneLine() throws Exception {
assertEquals("foo:first line", provider.getSourceLine("foo", 1));
assertEquals("foo:second line", provider.getSourceLine("foo", 2));
assertEquals("foo:third line", provider.getSourceLine("foo", 3));
assertEquals("bar:first line", provider.getSourceLine("bar", 1));
assertEquals("bar:second line", provider.getSourceLine("bar", 2));
assertEquals("bar:third line", provider.getSourceLine("bar", 3));
assertEquals("bar:fourth line", provider.getSourceLine("bar", 4));
}
public void testExcerptLineFromInexistantSource() throws Exception {
assertEquals(null, provider.getSourceLine("inexistant", 1));
assertEquals(null, provider.getSourceLine("inexistant", 7));
assertEquals(null, provider.getSourceLine("inexistant", 90));
}
public void testExcerptInexistantLine() throws Exception {
assertEquals(null, provider.getSourceLine("foo", 0));
assertEquals(null, provider.getSourceLine("foo", 4));
assertEquals(null, provider.getSourceLine("bar", 0));
assertEquals(null, provider.getSourceLine("bar", 5));
}
public void testExceptNoNewLine() throws Exception {
assertEquals("foo2:first line", provider.getSourceLine("foo2", 1));
assertEquals("foo2:second line", provider.getSourceLine("foo2", 2));
assertEquals("foo2:third line", provider.getSourceLine("foo2", 3));
assertEquals(null, provider.getSourceLine("foo2", 4));
}
public void testExcerptRegion() throws Exception {
assertRegionWellFormed("foo", 1);
assertRegionWellFormed("foo", 2);
assertRegionWellFormed("foo", 3);
assertRegionWellFormed("bar", 1);
assertRegionWellFormed("bar", 2);
assertRegionWellFormed("bar", 3);
assertRegionWellFormed("bar", 4);
}
public void testExcerptRegionFromInexistantSource() throws Exception {
assertEquals(null, provider.getSourceRegion("inexistant", 0));
assertEquals(null, provider.getSourceRegion("inexistant", 6));
assertEquals(null, provider.getSourceRegion("inexistant", 90));
}
public void testExcerptInexistantRegion() throws Exception {
assertEquals(null, provider.getSourceRegion("foo", 0));
assertEquals(null, provider.getSourceRegion("foo", 4));
assertEquals(null, provider.getSourceRegion("bar", 0));
assertEquals(null, provider.getSourceRegion("bar", 5));
}
/**
* Asserts that a region is 'well formed': it must not be an empty and
* cannot start or finish by a carriage return. In addition, it must
* contain the line whose region we are taking.
*/
private void assertRegionWellFormed(String sourceName, int lineNumber) {
Region region = provider.getSourceRegion(sourceName, lineNumber);
assertNotNull(region);
String sourceRegion = region.getSourceExcerpt();
assertNotNull(sourceRegion);
if (lineNumber == 1) {
assertEquals(1, region.getBeginningLineNumber());
} else {
assertTrue(region.getBeginningLineNumber() <= lineNumber);
}
assertTrue(lineNumber <= region.getEndingLineNumber());
assertNotSame(sourceRegion, 0, sourceRegion.length());
assertNotSame(sourceRegion, '\n', sourceRegion.charAt(0));
assertNotSame(sourceRegion,
'\n', sourceRegion.charAt(sourceRegion.length() - 1));
String line = provider.getSourceLine(sourceName, lineNumber);
assertTrue(sourceRegion, sourceRegion.contains(line));
}
}
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