[
https://issues.apache.org/jira/browse/CSV-247?focusedWorklogId=324495&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-324495
]
ASF GitHub Bot logged work on CSV-247:
--------------------------------------
Author: ASF GitHub Bot
Created on: 07/Oct/19 16:58
Start Date: 07/Oct/19 16:58
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/26160404)
Coverage decreased (-0.007%) to 92.921% when pulling
**c4633eada5bc97cd8e4245954891738364428da3 on aherbert:fix-CSV-247** into
**dcc44cdcd1419c65cc0b51a7368f3a63a06e9872 on apache:master**.
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Issue Time Tracking
-------------------
Worklog Id: (was: 324495)
Time Spent: 50m (was: 40m)
> 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 Herbert
> Priority: Minor
> Time Spent: 50m
> 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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