added namespace context class.

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

diff --git a/support/general/src/test/java/org/wamblee/xml/SimpleNamespaceContextTest.java b/support/general/src/test/java/org/wamblee/xml/SimpleNamespaceContextTest.java
new file mode 100644 (file)
index 0000000..26d8fdd
--- /dev/null
+++ b/support/general/src/test/java/org/wamblee/xml/SimpleNamespaceContextTest.java
@@ -0,0 +1,125 @@
+/*
+ * 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 static junit.framework.Assert.*;
+import static org.wamblee.xml.SimpleNamespaceContext.*;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.xml.XMLConstants;
+import javax.xml.namespace.NamespaceContext;
+
+import org.junit.Test;
+
+public class SimpleNamespaceContextTest {
+
+    private List<String> toList(Iterator aIterator) {
+        List<String> result = new ArrayList<String>();
+        while (aIterator.hasNext()) {
+            result.add((String) aIterator.next());
+        }
+        return result;
+    }
+
+    @Test
+    public void testDefaultContextNoNamespace() {
+        NamespaceContext context = namespaceContext();
+        assertEquals(XMLConstants.NULL_NS_URI,
+            context.getNamespaceURI(XMLConstants.DEFAULT_NS_PREFIX));
+        assertEquals(XMLConstants.NULL_NS_URI, context.getNamespaceURI("xxx"));
+        assertEquals(XMLConstants.XML_NS_URI,
+            context.getNamespaceURI(XMLConstants.XML_NS_PREFIX));
+        assertEquals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI,
+            context.getNamespaceURI(XMLConstants.XMLNS_ATTRIBUTE));
+
+        assertNull(context.getPrefix(XMLConstants.DEFAULT_NS_PREFIX));
+        assertFalse(context.getPrefixes(XMLConstants.DEFAULT_NS_PREFIX)
+            .hasNext());
+
+        assertEquals(XMLConstants.XML_NS_PREFIX,
+            context.getPrefix(XMLConstants.XML_NS_URI));
+        assertEquals(Arrays.asList(XMLConstants.XML_NS_PREFIX),
+            toList(context.getPrefixes(XMLConstants.XML_NS_URI)));
+
+        assertEquals(XMLConstants.XMLNS_ATTRIBUTE,
+            context.getPrefix(XMLConstants.XMLNS_ATTRIBUTE_NS_URI));
+        assertEquals(Arrays.asList(XMLConstants.XMLNS_ATTRIBUTE),
+            toList(context.getPrefixes(XMLConstants.XMLNS_ATTRIBUTE_NS_URI)));
+
+        assertNull(context.getPrefix("http://something.com"));
+        assertFalse(context.getPrefixes("http://something.com").hasNext());
+    }
+
+    @Test
+    public void testSinglePrefix() {
+        NamespaceContext context = namespaceContext("aaa", "http://example.com");
+        singlePrefixAssertions(context);
+    }
+
+    private void singlePrefixAssertions(NamespaceContext context) {
+        assertEquals(XMLConstants.NULL_NS_URI,
+            context.getNamespaceURI(XMLConstants.DEFAULT_NS_PREFIX));
+        assertEquals(XMLConstants.NULL_NS_URI, context.getNamespaceURI("xxx"));
+        assertEquals("http://example.com", context.getNamespaceURI("aaa"));
+        assertEquals(XMLConstants.XML_NS_URI,
+            context.getNamespaceURI(XMLConstants.XML_NS_PREFIX));
+        assertEquals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI,
+            context.getNamespaceURI(XMLConstants.XMLNS_ATTRIBUTE));
+
+        assertNull(context.getPrefix(XMLConstants.DEFAULT_NS_PREFIX));
+        assertEquals(XMLConstants.XML_NS_PREFIX,
+            context.getPrefix(XMLConstants.XML_NS_URI));
+        assertEquals(XMLConstants.XMLNS_ATTRIBUTE,
+            context.getPrefix(XMLConstants.XMLNS_ATTRIBUTE_NS_URI));
+        assertNull(context.getPrefix("http://something.com"));
+        assertEquals("aaa", context.getPrefix("http://example.com"));
+    }
+
+    @Test
+    public void testMultiplePrefixes() {
+        NamespaceContext context = namespaceContext().addPrefix("aaa",
+            "http://example.com").addPrefix("bbb", "http://example.com").addPrefix("ccc", "http://example2.com").addPrefix("ddd",
+                XMLConstants.XML_NS_URI).addPrefix("eee", XMLConstants.XMLNS_ATTRIBUTE_NS_URI);
+        singlePrefixAssertions(context);
+
+        List<String> prefixes = toList(context
+            .getPrefixes("http://example.com"));
+        assertEquals(2, prefixes.size());
+        assertTrue(prefixes.contains("aaa"));
+        assertTrue(prefixes.contains("bbb"));
+        
+        prefixes = toList(context
+            .getPrefixes("http://example2.com"));
+        assertEquals(1, prefixes.size());
+        assertTrue(prefixes.contains("ccc"));
+        
+        // standard xml and xmlns namespaces are special. Only the standard prefixes should be returned for these. 
+        
+        prefixes = toList(context
+            .getPrefixes(XMLConstants.XML_NS_URI));
+        assertEquals(1, prefixes.size());
+        assertTrue(prefixes.contains(XMLConstants.XML_NS_PREFIX));
+        
+        prefixes = toList(context
+            .getPrefixes(XMLConstants.XMLNS_ATTRIBUTE_NS_URI));
+        assertEquals(1, prefixes.size());
+        assertTrue(prefixes.contains(XMLConstants.XMLNS_ATTRIBUTE));     
+    }
+}