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/*
* Copyright 2008 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.base.Charsets;
import com.google.common.collect.ImmutableMap;
import junit.framework.TestCase;
import java.text.ParseException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* Tests for {@link VariableMap}.
*
*/
public class VariableMapTest extends TestCase {
public void testCycle1() throws ParseException {
cycleTest(ImmutableMap.of("AAA", "a", "BBB", "b"));
cycleTest(ImmutableMap.of("AA:AA", "a", "BB:BB", "b"));
cycleTest(ImmutableMap.of("AAA", "a:a", "BBB", "b:b"));
}
public void cycleTest(ImmutableMap<String, String> map)
throws ParseException {
VariableMap in = new VariableMap(map);
String serialized = new String(in.toBytes(), Charsets.UTF_8);
VariableMap out = VariableMap.fromBytes(serialized.getBytes());
assertMapsEquals(in.toMap(), out.toMap());
}
public void assertMapsEquals(
Map<String, String> expected, Map<String, String> result) {
assertEquals(expected.size(), result.size());
for (String key : expected.keySet()) {
assertEquals(expected.get(key), result.get(key));
}
}
public void testToBytes() {
VariableMap vm = new VariableMap(ImmutableMap.of("AAA", "a", "BBB", "b"));
String serialized = new String(vm.toBytes(), Charsets.UTF_8);
assertTrue(serialized.endsWith("\n"));
List<String> lines = Arrays.asList(serialized.split("\n"));
assertEquals(2, lines.size());
assertTrue(lines.contains("AAA:a"));
assertTrue(lines.contains("BBB:b"));
}
public void testFromBytes() throws ParseException {
VariableMap vm = VariableMap.fromBytes("AAA:a\nBBB:b\n".getBytes());
assertEquals(2, vm.getOriginalNameToNewNameMap().size());
assertEquals("a", vm.lookupNewName("AAA"));
assertEquals("b", vm.lookupNewName("BBB"));
assertEquals("AAA", vm.lookupSourceName("a"));
assertEquals("BBB", vm.lookupSourceName("b"));
}
public void testFileFormat1() {
assertEqual(
new VariableMap(ImmutableMap.of("x\ny", "a")).toBytes(),
"x\\ny:a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of("x:y", "a")).toBytes(),
"x\\:y:a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of("x\ny", "a")).toBytes(),
"x\\ny:a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of("x\\y", "a")).toBytes(),
"x\\\\y:a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of("\n", "a")).toBytes(),
"\\n:a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of(":", "a")).toBytes(),
"\\::a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of("\n", "a")).toBytes(),
"\\n:a\n".getBytes());
assertEqual(
new VariableMap(ImmutableMap.of("\\", "a")).toBytes(),
"\\\\:a\n".getBytes());
}
public void testFromBytesComplex1() throws ParseException {
// Verify we get out what we put in.
cycleTest(ImmutableMap.of("AAA[':f']", "a"));
// Verify the file format is as expected.
VariableMap in = new VariableMap(ImmutableMap.of("AAA[':f']", "a"));
assertEqual(in.toBytes(), "AAA['\\:f']:a\n".getBytes());
}
public void testFromBytesComplex2() throws ParseException {
VariableMap vm = VariableMap.fromBytes("AAA['\\:f']:a\n".getBytes());
assertEquals(1, vm.getOriginalNameToNewNameMap().size());
assertEquals("a", vm.lookupNewName("AAA[':f']"));
assertEquals(1, vm.getNewNameToOriginalNameMap().size());
assertEquals("AAA[':f']", vm.lookupSourceName("a"));
}
private void assertEqual(byte[] bytes1, byte[] bytes2) {
if (bytes1 != bytes2) {
assertEquals("length differs.", bytes1.length, bytes2.length);
for (int i = 0; i < bytes1.length; i++) {
assertEquals("byte " + i + "differs.", bytes1[i], bytes2[i]);
}
}
}
public void testReverseThrowsErrorOnDuplicate() throws ParseException {
VariableMap vm = new VariableMap(ImmutableMap.of("AA", "b", "BB", "b"));
try {
vm.getNewNameToOriginalNameMap();
fail();
} catch (java.lang.IllegalArgumentException expected) {
}
}
public void testReverseLookupOfNullFindsNoName() throws ParseException {
VariableMap vm = new VariableMap(ImmutableMap.of("AA", "a", "BB", "b"));
assertNull(vm.lookupSourceName(null));
}
}
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