What are you trying to achieve?

In my functional test I want to load an extension with typo3fluid/fluid dependency via $testExtensionsToLoad.

What do you get instead?

Loading the extension my_extension via $testExtensionsToLoad results in the following error:

Package "my_extension" depends on package "typo3fluid/fluid" which does not exist.

How to reproduce the issue?

As above, load an extension with typo3fluid/fluid dependency in the functional test's $testExtensionsToLoad

Additional information you would like to provide?

ComposerPackageManager::resolvePackageName runs basename() on the vendor "typo3fluid/fluid", leaving "fluid" which is the extension key of sysext:fluid, therefore loading the PackageInfo of sysext:fluid (not that of typo3fluid/fluid) and incorrectly evaluating isComposerDependency to true.

Specify some data of the environment

• TYPO3 testing framework version: 8.0.9
• TYPO3 version: 12
• TYPO3 installation type: Composer
• PHP version: 8.1.27
• Web server used + version:
• Operating system: Ubuntu 20.04