/*
* 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.ast.testing;
import com.google.common.css.compiler.ast.CssDeclarationNode;
import com.google.common.css.compiler.ast.CssNode;
import com.google.common.css.compiler.ast.CssPropertyValueNode;
import com.google.common.css.compiler.ast.CssRulesetNode;
import com.google.common.css.compiler.ast.CssTree;
import com.google.common.css.compiler.ast.VisitController;
import com.google.common.css.compiler.passes.UniformVisitor;
/**
* Utility methods for all the functional tests.
*
*/
public abstract class FunctionalTestCommonBase extends AstUtilityTestCase {
protected CssTree tree = null;
/**
* Utility method that given an input string parses and converts it.
*
* @param sourceCode A string representing the css input for the parser
*/
protected abstract void parseAndBuildTree(String sourceCode);
/**
* Utility method to test if for a given css input, the output is as
* expected.
*
* @param sourceCode
* @param expectedOutput
*/
protected void testTreeConstruction(
String sourceCode,
String expectedOutput) {
parseAndBuildTree(sourceCode);
runPass();
checkTreeDebugString(expectedOutput);
}
/**
* Utility method to compare the string representation of the tree against
* the expected string.
*
* @param expected
*/
protected void checkTreeDebugString(String expected) {
assertEquals(expected, tree.getRoot().toString());
}
protected boolean isEmptyBody() {
return tree.getRoot().getBody().isEmpty();
}
protected CssNode getFirstActualNode() {
return tree.getRoot().getBody().getChildAt(0);
}
protected <T> T findFirstNodeOf(final Class<T> clazz) {
final Object[] holder = new Object[1];
final VisitController vc = tree.getVisitController();
vc.startVisit(
UniformVisitor.Adapters.asVisitor(
new UniformVisitor() {
@Override
public void enter(CssNode n) {
if (clazz.isAssignableFrom(n.getClass())) {
holder[0] = n;
vc.stopVisit();
}
}
@Override
public void leave(CssNode node) {}
}));
return clazz.cast(holder[0]);
}
/**
* Assuming that the first actual node is a {@link CssRulesetNode}, gets the
* property value of the first declaration.
*
* @return The property value of the first declaration
*/
protected CssPropertyValueNode getFirstPropertyValue() {
return getPropertyValue(0);
}
/**
* Assuming that the first actual node is a {@link CssRulesetNode}, gets the
* property value of the declaration with the given index.
*
* @param i The index of the declaration
* @return The property value for the declaration with the given index
*/
protected CssPropertyValueNode getPropertyValue(int i) {
CssRulesetNode ruleset = (CssRulesetNode) getFirstActualNode();
CssNode decl = ruleset.getDeclarations().getChildAt(i);
return ((CssDeclarationNode) decl).getPropertyValue();
}
/** Runs a compiler pass. */
protected void runPass() {}
}