When a test appears in multiple suites, Infection errors out about infection HOT 4 OPEN

The issue happens within src/TestFramework/Coverage/JUnit/JUnitTestFileDataProvider.php in the method getTestFileInfo(). The method iterates the results of self::testCaseMapGenerator(), leading to $queryString and $placeholder variables used to build the DOMNodeList that is checked later on.

from infection.

I can confirm this issue. In our case we had multiple testsuites configured sharing the same directories. I think it would help to print some additional output, e.g. the used $queryString and $placeholder values.

from infection.

what do you mean by $queryString and $placeholder?

from infection.

Perhaps it even makes more sense to move Assert::same($nodes->length, 1); into the loop, something like

foreach (self::testCaseMapGenerator($fullyQualifiedClassName) as $queryString => $placeholder) {
    $nodes = $xPath->query(sprintf($queryString, $placeholder));

    if ($nodes->length !== 0) {
        Assert::same($nodes->length, 1, sprintf(
            'Found %d occurrences while expecting 1 when querying %s in %s',
                $nodes->length,
                sprintf($queryString, $placeholder),
                $xPath->document->documentURI
            ));
        break;
    }
}

from infection.