Add tests for charset String version of parse

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1353699 13f79535-47bb-0310-9956-ffa450edef68

httpclient/src/test/java/org/apache/http/client/utils/TestURLEncodedUtils.java

@@ -27,6 +27,7 @@
 
 package org.apache.http.client.utils;
 
+import java.net.URI;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -96,6 +97,61 @@ public class TestURLEncodedUtils {
         assertNameValuePair(result.get(0), "price", "10 \u20AC");
     }
 
+    @Test
+    public void testParseURLCodedContentString () throws Exception {
+        List <NameValuePair> result;
+
+        result = parseString("");
+        Assert.assertTrue(result.isEmpty());
+
+        result = parseString("Name0");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name0", null);
+
+        result = parseString("Name1=Value1");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name1", "Value1");
+
+        result = parseString("Name2=");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name2", "");
+
+        result = parseString("Name3");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name3", null);
+
+        result = parseString("Name4=Value%204%21");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name4", "Value 4!");
+
+        result = parseString("Name4=Value%2B4%21");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name4", "Value+4!");
+
+        result = parseString("Name4=Value%204%21%20%214");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name4", "Value 4! !4");
+
+        result = parseString("Name5=aaa&Name6=bbb");
+        Assert.assertEquals(2, result.size());
+        assertNameValuePair(result.get(0), "Name5", "aaa");
+        assertNameValuePair(result.get(1), "Name6", "bbb");
+
+        result = parseString("Name7=aaa&Name7=b%2Cb&Name7=ccc");
+        Assert.assertEquals(3, result.size());
+        assertNameValuePair(result.get(0), "Name7", "aaa");
+        assertNameValuePair(result.get(1), "Name7", "b,b");
+        assertNameValuePair(result.get(2), "Name7", "ccc");
+
+        result = parseString("Name8=xx%2C%20%20yy%20%20%2Czz");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "Name8", "xx,  yy  ,zz");
+
+        result = parseString("price=10%20%E2%82%AC");
+        Assert.assertEquals(1, result.size());
+        assertNameValuePair(result.get(0), "price", "10 \u20AC");
+    }
+
     @Test
     public void testParseInvalidURLCodedContent () throws Exception {
         List <NameValuePair> result;
@@ -310,6 +366,10 @@ public class TestURLEncodedUtils {
         return URLEncodedUtils.parse(params, Consts.UTF_8);
     }
 
+    private List <NameValuePair> parseString (final String uri) throws Exception {
+        return URLEncodedUtils.parse(new URI("?"+uri), "UTF-8");
+    }
+
     private static void assertNameValuePair (
             final NameValuePair parameter,
             final String expectedName,