Added Form converter

org.springframework.web/src/test/java/org/springframework/http/converter/FormHttpMessageConverterTests.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2002-2009 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.springframework.http.converter;
+
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.util.List;
+
+import static org.junit.Assert.*;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.http.MediaType;
+import org.springframework.http.MockHttpInputMessage;
+import org.springframework.http.MockHttpOutputMessage;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+
+/**
+ * @author Arjen Poutsma
+ */
+public class FormHttpMessageConverterTests {
+
+	private FormHttpMessageConverter converter;
+
+	@Before
+	public void setUp() {
+		converter = new FormHttpMessageConverter();
+	}
+
+	@SuppressWarnings("unchecked")
+	@Test
+	public void read() throws Exception {
+		String body = "name+1=value+1&name+2=value+2%2B1&name+2=value+2%2B2&name+3";
+		Charset iso88591 = Charset.forName("ISO-8859-1");
+		MockHttpInputMessage inputMessage = new MockHttpInputMessage(body.getBytes(iso88591));
+		inputMessage.getHeaders().setContentType(new MediaType("application", "x-www-form-urlencoded", iso88591));
+		MultiValueMap result = converter.read(null, inputMessage);
+		assertEquals("Invalid result", 3, result.size());
+		assertEquals("Invalid result", "value 1", result.getFirst("name 1"));
+		List<String> values = (List<String>) result.get("name 2");
+		assertEquals("Invalid result", 2, values.size());
+		assertEquals("Invalid result", "value 2+1", values.get(0));
+		assertEquals("Invalid result", "value 2+2", values.get(1));
+		assertNull("Invalid result", result.getFirst("name 3"));
+	}
+
+	@Test
+	public void write() throws IOException {
+		MultiValueMap<String, String> body = new LinkedMultiValueMap<String, String>();
+		body.set("name 1", "value 1");
+		body.add("name 2", "value 2+1");
+		body.add("name 2", "value 2+2");
+		body.add("name 3", null);
+		MockHttpOutputMessage outputMessage = new MockHttpOutputMessage();
+		converter.write(body, outputMessage);
+		Charset iso88591 = Charset.forName("ISO-8859-1");
+		assertEquals("Invalid result", "name+1=value+1&name+2=value+2%2B1&name+2=value+2%2B2&name+3",
+				outputMessage.getBodyAsString(iso88591));
+		assertEquals("Invalid content-type", new MediaType("application", "x-www-form-urlencoded"),
+				outputMessage.getHeaders().getContentType());
+	}
+
+}