HDFS-14466. Add a regression test for HDFS-14323.

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsUrl.java

@@ -494,4 +494,18 @@ public class TestWebHdfsUrl {
     }
   }
 
+  @Test
+  public void testWebHdfsUrlEncoding() throws Exception {
+    final WebHdfsFileSystem fs =
+        (WebHdfsFileSystem) FileSystem.get(uri, WebHdfsTestUtil.createConf());
+
+    // characters which should not be urlencoded.
+    final String unreserved = "_-!.~'()*";
+    final String punct = ",:$&=";
+    String path = "/testWebHdfsUrlEncoding" + unreserved + punct;
+    URL url =
+        WebHdfsTestUtil.toUrl(fs, GetOpParam.Op.LISTSTATUS, new Path(path));
+    WebHdfsTestUtil.LOG.info(url.getPath());
+    assertEquals(WebHdfsFileSystem.PATH_PREFIX + path, url.getPath());
+  }
 }