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https://issues.apache.org/jira/browse/CSV-247?focusedWorklogId=271525&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-271525
]
ASF GitHub Bot logged work on CSV-247:
--------------------------------------
Author: ASF GitHub Bot
Created on: 03/Jul/19 10:09
Start Date: 03/Jul/19 10:09
Worklog Time Spent: 10m
Work Description: coveralls commented on issue #47: CSV-247: CSVParser to
check an empty header before checking duplicates.
URL: https://github.com/apache/commons-csv/pull/47#issuecomment-508031331
[](https://coveralls.io/builds/24344490)
Coverage decreased (-0.007%) to 92.822% when pulling
**cb852dd00476c9691c9f1e9ae5b5f2c617ccce89 on aherbert:fix-CSV-247** into
**7754cd4c84299e72043067501d2965f55e7ff769 on apache:master**.
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Issue Time Tracking
-------------------
Worklog Id: (was: 271525)
Time Spent: 20m (was: 10m)
> A single empty header is allowed when not allowing empty column headers.
> ------------------------------------------------------------------------
>
> Key: CSV-247
> URL: https://issues.apache.org/jira/browse/CSV-247
> Project: Commons CSV
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Alex D Herbert
> Priority: Minor
> Time Spent: 20m
> Remaining Estimate: 0h
>
> If the settings are not allowing empty columns headers you can currently use
> a single empty header. This is because column headers are only checked for
> empty when they are duplicates. So it is the second empty header (the first
> duplicate) that raises an error. This test should pass but does not:
> {code:java}
> @Test(expected = IllegalArgumentException.class)
> public void testHeadersMissingOneColumnException() throws Exception {
> final Reader in = new StringReader("a,,c,d\n1,2,3,4\nx,y,z,zz");
> CSVFormat.DEFAULT.withHeader().parse(in).iterator();
> }
> {code}
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