Added XPath utilities and updated the javadocs.

[utils] / support / general / src / test / java / org / wamblee / xml / XPathExpressionTest.java

diff --git a/support/general/src/test/java/org/wamblee/xml/XPathExpressionTest.java b/support/general/src/test/java/org/wamblee/xml/XPathExpressionTest.java
new file mode 100644 (file)
index 0000000..3ff0df0
--- /dev/null
+++ b/support/general/src/test/java/org/wamblee/xml/XPathExpressionTest.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2005-2011 the original author or 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 org.wamblee.xml;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import static junit.framework.TestCase.*;
+import static org.wamblee.xml.XMLDocument.*;
+import static org.wamblee.xml.XPathContext.*;
+import static org.wamblee.xml.SimpleNamespaceContext.*;
+
+public class XPathExpressionTest {
+
+    private XPathContext context; 
+    private XMLDocument doc; 
+    
+    @Before
+    public void setUp() throws XMLException, URISyntaxException, IOException { 
+        context = xpathcontext(namespaces().addPrefix("n", "http://example.com/1").addPrefix("m", "http://example.com/2"));
+        doc = xmldocument(getClass().getResource("xpathexample.xml").toURI());
+    }
+    
+    @Test(expected = XMLException.class)
+    public void testInvalidXpath() throws XMLException { 
+        context.createExpression("a[");
+    }
+    
+    @Test
+    public void testStringVal() throws XMLException { 
+        String value = context.createExpression("/n:root/m:x").stringEval(doc);
+        assertEquals("hallo", value.trim());
+    }
+    
+    @Test
+    public void testBooleanVal() throws XMLException { 
+        assertTrue(context.createExpression("/n:root/m:x").booleanEval(doc));        
+        assertFalse(context.createExpression("unknownelement").booleanEval(doc));
+    }
+    
+    @Test
+    public void testNummberVal() throws XMLException { 
+        assertEquals(1.0d, context.createExpression("count(/n:root/m:x)").numberEval(doc));
+        assertEquals(11.0d, context.createExpression("//n:elem").numberEval(doc));
+    }
+    
+    @Test
+    public void testNodeVal() throws XMLException { 
+        Node node = context.createExpression("/n:root/n:elem").nodeEval(doc);
+        assertTrue(node instanceof Element); 
+        assertEquals("11", node.getTextContent().trim());
+        assertEquals("elem", node.getLocalName());
+        assertEquals("http://example.com/1", node.getNamespaceURI());
+    }
+    
+    @Test
+    public void testNodeSetVal() throws XMLException { 
+        NodeList nodelist = context.createExpression("/n:root/n:elem").nodelistEval(doc);
+        assertEquals(2, nodelist.getLength());
+        assertEquals("11", nodelist.item(0).getTextContent().trim());
+        assertEquals("22", nodelist.item(1).getTextContent().trim());
+    }
+}