XML configuration migration does not migrate `whitelist/file` elements

[anomiex]

Q	A
PHPUnit version	10.2.1, 9.6.8
PHP version	8.2.5, 8.0.28
Installation Method	Composer

Summary

Migration fails if the <whitelist> uses <file>.

Current behavior

$ vendor/bin/phpunit --migrate-configuration
PHPUnit 10.2.1 by Sebastian Bergmann and contributors.

Created backup:         /tmp/test/phpunit.xml.dist.bak
Migration failed: whitelist element has unexpected children

$ vendor/bin/phpunit --migrate-configuration
PHPUnit 9.6.8 by Sebastian Bergmann and contributors.

Created backup:         /tmp/test/phpunit.xml.dist.bak
Migration failed: whitelist element has unexpected children

How to reproduce

1. Create a phpunit.xml.dist like this, which is valid in older versions of PHPUnit.

   <phpunit>
   
       <testsuites>
           <testsuite name="main">
               <directory suffix=".php">tests/php</directory>
           </testsuite>
       </testsuites>
   
       <filter>
           <whitelist>
               <file>./*.php</file>
               <directory suffix=".php">src</directory>
           </whitelist>
       </filter>
   
   </phpunit>

2. Run vendor/bin/phpunit --migrate-configuration

Expected behavior

Migration succeeds, producing this valid PHPUnit 10.2.1 configuration.

<?xml version="1.0"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.2/phpunit.xsd" cacheDirectory=".phpunit.cache">
  <coverage/>
  <testsuites>
    <testsuite name="main">
      <directory suffix=".php">tests/php</directory>
    </testsuite>
  </testsuites>
  <source>
    <include>
      <file>./*.php</file>
      <directory suffix=".php">src</directory>
    </include>
  </source>
</phpunit>

or this valid PHPUnit 9.6 configuration

<?xml version="1.0"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
  <coverage>
    <include>
      <file>./*.php</file>
      <directory suffix=".php">src</directory>
    </include>
  </coverage>
  <testsuites>
    <testsuite name="main">
      <directory suffix=".php">tests/php</directory>
    </testsuite>
  </testsuites>
</phpunit>

[sebastianbergmann]

The phpunit.xml.dist you show in step 1 is missing an XSD reference.

[anomiex]

Which makes absolutely no difference to the early PHPUnit 9 versions or PHPUnit <9 versions that use <whitelist>. But add one in if you really want, the result is still the same.

[sebastianbergmann]

I need to know from which version you are trying to migrate.

[anomiex]

No, you don't, because it doesn't matter.

But since you'll probably ignore this if I don't tell you a version despite the obvious bug, I've generated for you a fresh config file with PHPUnit 5.7.27, 6.5.14, 7.5.20, 8.5.33, and 9.2.6, all with one <file> added to trigger the bug.

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/5.7/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         backupGlobals="false"
         beStrictAboutCoversAnnotation="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTestsThatDoNotTestAnything="true"
         beStrictAboutTodoAnnotatedTests="true"
         verbose="true">
    <testsuite name="default">
        <directory suffix="Test.php">tests</directory>
    </testsuite>

    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <file>./*.php</file>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/6.5/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         forceCoversAnnotation="true"
         beStrictAboutCoversAnnotation="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         verbose="true">
    <testsuite name="default">
        <directory suffix="Test.php">tests</directory>
    </testsuite>

    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <file>./*.php</file>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/7.5/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         forceCoversAnnotation="true"
         beStrictAboutCoversAnnotation="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         verbose="true">
    <testsuites>
        <testsuite name="default">
            <directory suffix="Test.php">tests</directory>
        </testsuite>
    </testsuites>

    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <file>./*.php</file>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.5/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         cacheResultFile=".phpunit.cache/test-results"
         executionOrder="depends,defects"
         forceCoversAnnotation="true"
         beStrictAboutCoversAnnotation="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         convertDeprecationsToExceptions="true"
         verbose="true">
    <testsuites>
        <testsuite name="default">
            <directory>tests</directory>
        </testsuite>
    </testsuites>

    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <file>./*.php</file>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.2/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         executionOrder="depends,defects"
         forceCoversAnnotation="true"
         beStrictAboutCoversAnnotation="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         verbose="true">
    <testsuites>
        <testsuite name="default">
            <directory suffix="Test.php">tests</directory>
        </testsuite>
    </testsuites>

    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <file>./*.php</file>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>

Happy now?

[sebastianbergmann]

No, you don't, because it doesn't matter.

Thank you for your patience and for providing me with the information I thought I needed.

The functionality controlled by --migrate-configuration was introduced in PHPUnit 9.3. It is only meant to support the migration of XML configuration files that are compatible with the phpunit.xsd of PHPUnit 8.5 (or newer). Therefore, PHPUnit 5.7.27, PHPUnit 6.5.14, PHPUnit 7.5.20 are out of scope here.

The exception is triggered by the RemoveEmptyFilter migration which assumes that the MoveWhitelistDirectoriesToCoverage migration, which is run before RemoveEmptyFilter, moved all <whitelist> elements from the old structure to the new structure. However, as the name already implies, MoveWhitelistDirectoriesToCoverage only moves whitelist/directory elements, thus leaving behind whitelist/file elements.

This will be addressed shortly.