diff options
Diffstat (limited to 'test/java/org/apache/fop/layoutengine/TrueCheck.java')
-rw-r--r-- | test/java/org/apache/fop/layoutengine/TrueCheck.java | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/test/java/org/apache/fop/layoutengine/TrueCheck.java b/test/java/org/apache/fop/layoutengine/TrueCheck.java new file mode 100644 index 000000000..68a791503 --- /dev/null +++ b/test/java/org/apache/fop/layoutengine/TrueCheck.java @@ -0,0 +1,75 @@ +/* + * Copyright 2005 The Apache Software Foundation. + * + * 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. + */ + +/* $Id$ */ + +package org.apache.fop.layoutengine; + +import javax.xml.transform.TransformerException; + +import org.apache.xpath.XPathAPI; +import org.apache.xpath.objects.XBoolean; +import org.apache.xpath.objects.XObject; +import org.w3c.dom.Document; +import org.w3c.dom.Node; + +/** + * Simple check that requires an XPath expression to evaluate to true. + */ +public class TrueCheck implements LayoutEngineCheck { + + private String xpath; + + /** + * Creates a new instance + * @param xpath XPath statement that needs to be evaluated + */ + public TrueCheck(String xpath) { + this.xpath = xpath; + } + + /** + * Creates a new instance from a DOM node. + * @param node DOM node that defines this check + */ + public TrueCheck(Node node) { + this.xpath = node.getAttributes().getNamedItem("xpath").getNodeValue(); + } + + /** + * @see org.apache.fop.layoutengine.LayoutEngineCheck#check(org.w3c.dom.Document) + */ + public void check(Document doc) { + XObject res; + try { + res = XPathAPI.eval(doc, xpath); + } catch (TransformerException e) { + throw new RuntimeException("XPath evaluation failed: " + e.getMessage()); + } + if (!XBoolean.S_TRUE.equals(res)) { + throw new RuntimeException( + "Expected XPath expression to evaluate to 'true', but got '" + + res + "' (" + this + ")"); + } + + } + + /** @see java.lang.Object#toString() */ + public String toString() { + return "XPath: " + xpath; + } + +} |