Edit:
As @nigelRen pointed out, the problem was the quotes. I copied my XML from the DBUnit documentation as a starting point, and it appears the double quote characters that it came with were not the same as the double quote characters I would type in my editor. Overtyping them fixes the issue.
I am new to using PHPUnit and am now augmenting with DBUnit. I have created a test database and am using createFlatXMLDataSet to populate it with data in the getDataSet() test method, per the DBUnit docs.
It seems my XML File is improperly formatted, judging by a litany of LibXMLErrors:
RuntimeException: LibXMLError Object
│ (
│ [level] => 3
│ [code] => 33
│ [column] => 15
│ [message] => String not started expecting ' or "
│
│ [file] => /Users/lookdangerous/mono/master/php/tests/customer-seed.xml
│ [line] => 1
│ )
│ LibXMLError Object
│ (
│ [level] => 3
│ [code] => 96
│ [column] => 15
│ [message] => Malformed declaration expecting version
│
│ [file] => /Users/lookdangerous/mono/master/php/tests/customer-seed.xml
│ [line] => 1
│ )
│ LibXMLError Object
│ (
│ [level] => 3
│ [code] => 65
│ [column] => 15
│ [message] => Blank needed here
│
│ [file] => /Users/lookdangerous/mono/master/php/tests/customer-seed.xml
│ [line] => 1
│ )
(This is only a few of the many I am receiving. )
customer-seed.xml:
<?xml version=“1.0” encoding="UTF-8" ?>
<dataset>
<customers
GUID=“fe70e6fe-3e7f-4aa3-bf98-d48ed08ba80b”
ClientID=“ANDE8834”
/>
<customers
GUID=“9f3d1594-a743-41c3-9787-2f8d916287a3”
ClientID="FRAN3987"
/>
<dependents />
<rentals />
<businesses />
</dataset>
And finally, the code calling the function:
return $this->createFlatXMLDataSet(dirname(__FILE__).'/customer-seed.xml');
It at first seemed like a problem with magic_qutoes, per this stack overflow question and this one, but then I realized I am using PHP 7+ so it should not apply.
It seems like the behavior, though, is as if magic quotes were turned on. I also questioned file encoding, and added the encoding tag as seen above to no avail.