/*
* Copyright 2009 Google Inc.
*
* 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.common.css.compiler.passes;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;
import com.google.common.collect.Lists;
import com.google.common.css.compiler.ast.BackDoorNodeMutation;
import com.google.common.css.compiler.ast.CssBlockNode;
import com.google.common.css.compiler.ast.CssDeclarationNode;
import com.google.common.css.compiler.ast.CssFunctionArgumentsNode;
import com.google.common.css.compiler.ast.CssFunctionNode;
import com.google.common.css.compiler.ast.CssHexColorNode;
import com.google.common.css.compiler.ast.CssNumericNode;
import com.google.common.css.compiler.ast.CssPropertyNode;
import com.google.common.css.compiler.ast.CssPropertyValueNode;
import com.google.common.css.compiler.ast.CssRootNode;
import com.google.common.css.compiler.ast.CssRulesetNode;
import com.google.common.css.compiler.ast.CssSelectorNode;
import com.google.common.css.compiler.ast.CssTree;
import com.google.common.css.compiler.ast.CssValueNode;
import com.google.common.css.compiler.ast.MutatingVisitController;
import junit.framework.TestCase;
import java.util.List;
/**
* Unit tests for {@link ColorValueOptimizer}.
*
* @author oana@google.com (Oana Florescu)
*/
public class ColorValueOptimizerTest extends TestCase {
public void testRunPass() {
MutatingVisitController visitController = createMock(
MutatingVisitController.class);
ColorValueOptimizer pass = new ColorValueOptimizer(visitController);
visitController.startVisit(pass);
replay(visitController);
pass.runPass();
verify(visitController);
}
public void testEnterValueNode1() {
CssPropertyNode prop = new CssPropertyNode("color", null);
CssPropertyValueNode value = new CssPropertyValueNode();
BackDoorNodeMutation.addChildToBack(value, new CssHexColorNode("#112233", null));
CssDeclarationNode decl = new CssDeclarationNode(prop);
decl.setPropertyValue(value);
CssRulesetNode ruleset = new CssRulesetNode();
CssSelectorNode sel = new CssSelectorNode("foo", null);
ruleset.addSelector(sel);
ruleset.addDeclaration(decl);
CssBlockNode body = new CssBlockNode(false);
BackDoorNodeMutation.addChildToBack(body, ruleset);
CssRootNode root = new CssRootNode(body);
CssTree tree = new CssTree(null, root);
ColorValueOptimizer pass = new ColorValueOptimizer(
tree.getMutatingVisitController());
pass.runPass();
assertEquals(tree.getRoot().getBody().toString(),
"[[foo]{[color:[#123]]}]");
}
public void testEnterValueNode2() {
CssPropertyNode prop = new CssPropertyNode("color", null);
CssPropertyValueNode value = new CssPropertyValueNode();
BackDoorNodeMutation.addChildToBack(value, new CssHexColorNode("#123344", null));
CssDeclarationNode decl = new CssDeclarationNode(prop);
decl.setPropertyValue(value);
CssRulesetNode ruleset = new CssRulesetNode();
CssSelectorNode sel = new CssSelectorNode("foo", null);
ruleset.addSelector(sel);
ruleset.addDeclaration(decl);
CssBlockNode body = new CssBlockNode(false);
BackDoorNodeMutation.addChildToBack(body, ruleset);
CssRootNode root = new CssRootNode(body);
CssTree tree = new CssTree(null, root);
ColorValueOptimizer pass = new ColorValueOptimizer(
tree.getMutatingVisitController());
pass.runPass();
assertEquals(tree.getRoot().getBody().toString(),
"[[foo]{[color:[#123344]]}]");
}
private CssNumericNode createNumericNode(String value) {
if (value.endsWith("%")) {
return new CssNumericNode(value.substring(0, value.length() - 1), "%");
}
return new CssNumericNode(value, "");
}
private CssFunctionNode createRgbFunctionNode(String r, String g, String b) {
CssFunctionNode function = new CssFunctionNode(
CssFunctionNode.Function.byName("rgb"), null /* sourceCodeLocation */);
List<CssValueNode> values = Lists.newArrayList();
values.add(createNumericNode(r));
values.add(createNumericNode(g));
values.add(createNumericNode(b));
CssFunctionArgumentsNode args = new CssFunctionArgumentsNode(values);
function.setArguments(args);
return function;
}
public void testEnterFunctionNode1() {
CssPropertyNode prop = new CssPropertyNode("color", null);
CssPropertyValueNode value = new CssPropertyValueNode();
CssFunctionNode function = createRgbFunctionNode("0%", "100%", "0%");
BackDoorNodeMutation.addChildToBack(value, function);
CssDeclarationNode decl = new CssDeclarationNode(prop);
decl.setPropertyValue(value);
CssRulesetNode ruleset = new CssRulesetNode();
CssSelectorNode sel = new CssSelectorNode("foo", null);
ruleset.addSelector(sel);
ruleset.addDeclaration(decl);
CssBlockNode body = new CssBlockNode(false);
BackDoorNodeMutation.addChildToBack(body, ruleset);
CssRootNode root = new CssRootNode(body);
CssTree tree = new CssTree(null, root);
ColorValueOptimizer pass = new ColorValueOptimizer(
tree.getMutatingVisitController());
pass.runPass();
assertEquals(tree.getRoot().getBody().toString(),
"[[foo]{[color:[#0f0]]}]");
}
public void testCanShortenHex() {
assertTrue(ColorValueOptimizer.canShortenHexString("#000000"));
assertTrue(ColorValueOptimizer.canShortenHexString("#00aa22"));
assertFalse(ColorValueOptimizer.canShortenHexString("#000001"));
assertFalse(ColorValueOptimizer.canShortenHexString("#000"));
}
public void testShortenHex() {
assertEquals("#000", ColorValueOptimizer.shortenHexString("#000000"));
assertEquals("#0a2", ColorValueOptimizer.shortenHexString("#00aa22"));
}
public void testParseRgbArguments() {
CssFunctionNode function = createRgbFunctionNode("0", "15", "255");
assertEquals("#000fff", ColorValueOptimizer.parseRgbArguments(function));
function = createRgbFunctionNode("0%", "50%", "100%");
assertEquals("#0080ff", ColorValueOptimizer.parseRgbArguments(function));
}
public void testParseRgbArgumentsOutOfRange() {
// Surprisingly, these are valid according to W3C and should be clamped
// to valid values.
CssFunctionNode function = createRgbFunctionNode("1", "1", "300");
assertEquals("#0101ff", ColorValueOptimizer.parseRgbArguments(function));
function = createRgbFunctionNode("-10", "1", "1");
assertEquals("#000101", ColorValueOptimizer.parseRgbArguments(function));
}
public void testParseRgbArgumentsBadArgs() {
CssFunctionNode function = new CssFunctionNode(
CssFunctionNode.Function.byName("rgb"), null /* sourceCodeLocation */);
List<CssValueNode> values = Lists.newArrayList();
values.add(createNumericNode("0"));
CssFunctionArgumentsNode args = new CssFunctionArgumentsNode(values);
function.setArguments(args);
try {
ColorValueOptimizer.parseRgbArguments(function);
fail("Too few arguments to rgb function; should have thrown.");
} catch (NumberFormatException expected) {
// Exception is expected.
}
}
}