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https://issues.apache.org/jira/browse/IO-686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17194758#comment-17194758
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Sebb commented on IO-686:
-------------------------
It looks like there was a test for the behaviour:
https://github.com/apache/commons-io/blob/6efbccc88318d15c0f5fdcfa0b87e3dc980dca22/src/test/java/org/apache/commons/io/IOUtilsCopyTestCase.java#L99
That suggests the behaviour was intentional.
> IOUtils.toByteArray(InputStream) Javadoc does not match code
> ------------------------------------------------------------
>
> Key: IO-686
> URL: https://issues.apache.org/jira/browse/IO-686
> Project: Commons IO
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 2.8.0
> Reporter: Alan Moffat
> Priority: Critical
> Fix For: 2.9.0
>
>
> According to the code in the v2.8.0 release, passing null to the method
> should throw an exception, however it is producing an empty byte array
> instead.
> {code:java}
> /**
> * Gets the contents of an <code>InputStream</code> as a <code>byte[]</code>.
> * <p>
> * This method buffers the input internally, so there is no need to use a
> * <code>BufferedInputStream</code>.
> * </p>
> *
> * @param input the <code>InputStream</code> to read from
> * @return the requested byte array
> * @throws NullPointerException if the input is null
> * @throws IOException if an I/O error occurs
> */
> public static byte[] toByteArray(final InputStream input) throws IOException {
> try (final ByteArrayOutputStream output = new ByteArrayOutputStream()) {
> copy(input, output);
> return output.toByteArray();
> }
> } {code}
> This can be recreated by the following:
> {code:java}
> @Test
> public void shouldThrowNullPointerException() {
> assertThrows(NullPointerException.class, () ->
> IOUtils.toByteArray((InputStream) null))
> } {code}
> On v2.7 the test passes, on v2.8.0 it fails.
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