mernst commented on a change in pull request #117:
URL: https://github.com/apache/commons-io/pull/117#discussion_r444441946



##########
File path: 
src/test/java/org/apache/commons/io/input/ReversedLinesFileReaderTestSimple.java
##########
@@ -66,6 +67,10 @@ public void testUnsupportedEncodingBig5() throws 
URISyntaxException {
                 () -> new ReversedLinesFileReader(testFileEncodingBig5, 
IOUtils.DEFAULT_BUFFER_SIZE, "Big5").close());
     }
 
-
+    @Test
+    public void testNullEncoding() throws IOException, URISyntaxException {
+        new ReversedLinesFileReader(new 
File(this.getClass().getResource("/test-file-empty.bin").toURI()),
+                                    (Charset) null);
+    }

Review comment:
       I agree these tests are useful to improve code coverage.  But they are 
not directly related to the change, and previous changes to this code were 
permitted without adding these missing tests.  Could we create a new pull 
request or issue to improve the coverage of the test suite, to avoid blocking 
this pull request?




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