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/*
* Copyright 2010 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.deps;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.javascript.jscomp.deps.SortedDependencies.CircularDependencyException;
import junit.framework.TestCase;
import java.util.List;
/**
* Tests for {@link SortedDependencies}
* @author nicksantos@google.com (Nick Santos)
*/
public class SortedDependenciesTest extends TestCase {
public void testSort() throws Exception {
SimpleDependencyInfo a = new SimpleDependencyInfo(
"a", "a", provides(), requires("b", "c"));
SimpleDependencyInfo b = new SimpleDependencyInfo(
"b", "b", provides("b"), requires("d"));
SimpleDependencyInfo c = new SimpleDependencyInfo(
"c", "c", provides("c"), requires("d"));
SimpleDependencyInfo d = new SimpleDependencyInfo(
"d", "d", provides("d"), requires());
SimpleDependencyInfo e = new SimpleDependencyInfo(
"e", "e", provides("e"), requires());
assertSortedInputs(
ImmutableList.of(d, b, c, a),
ImmutableList.of(a, b, c, d));
assertSortedInputs(
ImmutableList.of(d, b, c, a),
ImmutableList.of(d, b, c, a));
assertSortedInputs(
ImmutableList.of(d, c, b, a),
ImmutableList.of(d, c, b, a));
assertSortedInputs(
ImmutableList.of(d, b, c, a),
ImmutableList.of(d, a, b, c));
assertSortedDeps(
ImmutableList.of(d, b, c, a),
ImmutableList.of(d, b, c, a),
ImmutableList.of(a));
assertSortedDeps(
ImmutableList.of(d, c),
ImmutableList.of(d, c, b, a),
ImmutableList.of(c));
assertSortedDeps(
ImmutableList.of(d),
ImmutableList.of(d, c, b, a),
ImmutableList.of(d));
try {
assertSortedDeps(
ImmutableList.<SimpleDependencyInfo>of(),
ImmutableList.of(a, b, c, d),
ImmutableList.of(e));
fail("Expected an exception");
} catch (IllegalArgumentException expected) {}
}
public void testSort2() throws Exception {
SimpleDependencyInfo ab = new SimpleDependencyInfo(
"ab", "ab", provides("a", "b"), requires("d", "f"));
SimpleDependencyInfo c = new SimpleDependencyInfo(
"c", "c", provides("c"), requires("h"));
SimpleDependencyInfo d = new SimpleDependencyInfo(
"d", "d", provides("d"), requires("e", "f"));
SimpleDependencyInfo ef = new SimpleDependencyInfo(
"ef", "ef", provides("e", "f"), requires("g", "c"));
SimpleDependencyInfo g = new SimpleDependencyInfo(
"g", "g", provides("g"), requires());
SimpleDependencyInfo hi = new SimpleDependencyInfo(
"hi", "hi", provides("h", "i"), requires());
assertSortedInputs(
ImmutableList.of(g, hi, c, ef, d, ab),
ImmutableList.of(ab, c, d, ef, g, hi));
assertSortedDeps(
ImmutableList.of(g),
ImmutableList.of(ab, c, d, ef, g, hi),
ImmutableList.of(g));
assertSortedDeps(
ImmutableList.of(g, hi, c, ef, d),
ImmutableList.of(ab, c, d, ef, g, hi),
ImmutableList.of(d, hi));
}
public void testSort3() {
SimpleDependencyInfo a = new SimpleDependencyInfo(
"a", "a", provides("a"), requires("c"));
SimpleDependencyInfo b = new SimpleDependencyInfo(
"b", "b", provides("b"), requires("a"));
SimpleDependencyInfo c = new SimpleDependencyInfo(
"c", "c", provides("c"), requires("b"));
try {
new SortedDependencies<SimpleDependencyInfo>(
Lists.newArrayList(a, b, c));
fail("expected exception");
} catch (CircularDependencyException e) {
assertEquals("a -> a", e.getMessage());
}
}
public void testSort4() throws Exception {
// Check the degenerate case.
SimpleDependencyInfo a = new SimpleDependencyInfo(
"a", "a", provides("a"), requires("a"));
assertSortedDeps(
ImmutableList.of(a),
ImmutableList.of(a),
ImmutableList.of(a));
}
public void testSort5() throws Exception {
SimpleDependencyInfo a = new SimpleDependencyInfo(
"a", "a", provides("a"), requires());
SimpleDependencyInfo b = new SimpleDependencyInfo(
"b", "b", provides("b"), requires());
SimpleDependencyInfo c = new SimpleDependencyInfo(
"c", "c", provides("c"), requires());
assertSortedInputs(
ImmutableList.of(a, b, c),
ImmutableList.of(a, b, c));
assertSortedInputs(
ImmutableList.of(c, b, a),
ImmutableList.of(c, b, a));
}
private void assertSortedInputs(
List<SimpleDependencyInfo> expected,
List<SimpleDependencyInfo> shuffled) throws Exception {
SortedDependencies<SimpleDependencyInfo> sorted =
new SortedDependencies<SimpleDependencyInfo>(shuffled);
assertEquals(expected, sorted.getSortedList());
}
private void assertSortedDeps(
List<SimpleDependencyInfo> expected,
List<SimpleDependencyInfo> shuffled,
List<SimpleDependencyInfo> roots) throws Exception {
SortedDependencies<SimpleDependencyInfo> sorted =
new SortedDependencies<SimpleDependencyInfo>(shuffled);
assertEquals(expected, sorted.getSortedDependenciesOf(roots));
}
private List<String> requires(String ... strings) {
return Lists.newArrayList(strings);
}
private List<String> provides(String ... strings) {
return Lists.newArrayList(strings);
}
}
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