native web request parameter map tests

org.springframework.web/src/test/java/org/springframework/web/context/request/NativeWebRequestParameterMapTests.java

+package org.springframework.web.context.request;
+
+import java.util.Iterator;
+
+import junit.framework.TestCase;
+
+import org.springframework.mock.web.MockHttpServletRequest;
+
+/**
+ * Unit test for the {@link HttpServletRequestParameterMap} class.
+ * 
+ * @author Ulrik Sandberg
+ */
+public class NativeWebRequestParameterMapTests extends TestCase {
+
+	private NativeWebRequestParameterMap tested;
+
+	private MockHttpServletRequest request;
+
+	protected void setUp() throws Exception {
+		super.setUp();
+		request = new MockHttpServletRequest();
+		tested = new NativeWebRequestParameterMap(new ServletWebRequest(request));
+	}
+
+	protected void tearDown() throws Exception {
+		super.tearDown();
+		request = null;
+		tested = null;
+	}
+
+	public void testGetAttribute() {
+		request.setParameter("Some param", "Some value");
+		// perform test
+		Object result = tested.getAttribute("Some param");
+		assertEquals("Some value", result);
+	}
+
+	public void testSetAttribute() {
+		// perform test
+		try {
+			tested.setAttribute("Some key", "Some value");
+			fail("UnsupportedOperationException expected");
+		} catch (UnsupportedOperationException expected) {
+			// expected
+		}
+	}
+
+	public void testRemoveAttribute() {
+		request.setParameter("Some param", "Some value");
+		// perform test
+		try {
+			tested.removeAttribute("Some param");
+			fail("UnsupportedOperationException expected");
+		} catch (UnsupportedOperationException expected) {
+			// expected
+		}
+	}
+
+	public void testGetAttributeNames() {
+		request.setParameter("Some param", "Some value");
+		// perform test
+		Iterator names = tested.getAttributeNames();
+		assertNotNull("Null result unexpected", names);
+		assertTrue("More elements", names.hasNext());
+		String name = (String) names.next();
+		assertEquals("Some param", name);
+	}
+}
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