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https://issues.apache.org/jira/browse/EXEC-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888670#comment-13888670
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Karl Heinz Marbaise edited comment on EXEC-80 at 2/1/14 6:55 PM:
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Attached patch with according unit tests based on trunk@1563452
was (Author: khmarbaise):
Attached patch with according unit tests.
> NPE in EnvironmentUtils.toString(map)
> -------------------------------------
>
> Key: EXEC-80
> URL: https://issues.apache.org/jira/browse/EXEC-80
> Project: Commons Exec
> Issue Type: Bug
> Affects Versions: 1.2
> Environment: all
> Reporter: Karl Heinz Marbaise
> Priority: Critical
> Attachments: EXEC-80.patch
>
>
> I have drilled down a problem in the above class method which can be checked
> by using the following unit test:
> {code}
> @Test
> public void toStringTest() {
> Map<String,String> map = new HashMap<String, String>();
> map.put("key", null);
> String[] result = EnvironmentUtils.toStrings(map);
> assertThat(result.length).isEqualTo(1);
> }
> {code}
> The above test will fail with an NullPointerException..as expected, cause the
> method accesses the key as well as the value by using the following code line:
> {code}
> result[i] = entry.getKey().toString() + "=" + entry.getValue().toString();
> {code}
> It should be checked if key and/or value are null. If you would use the
> following code:
> {code}
> public static String[] toStrings(final Map environment) {
> if (environment == null) {
> return null;
> }
> final String[] result = new String[environment.size()];
> int i = 0;
> for (final Iterator iter = environment.entrySet().iterator();
> iter.hasNext();) {
> final Map.Entry entry = (Map.Entry) iter.next();
> String key = entry.getKey() == null ? "" :
> entry.getKey().toString();
> String value = entry.getValue() == null ? "" :
> entry.getValue().toString();
> result[i] = key + "=" + value;
> i++;
> }
> return result;
> }
> {code}
> it will solve the issue.
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