* Add AuthHelper::addAuthenticationHeader() test on missing authentication credentials.
* Add AuthHelper::addAuthenticationHeader() test on bearer password.
* Add AuthHelper::addAuthenticationHeader() test on Github token.
* Add AuthHelper::addAuthenticationHeader() test on Gitlab Oauth token.
* Add $authenticationDisplayMessage write expectation to AuthHelper::addAuthenticationHeader() tests.
* Add AuthHelper::addAuthenticationHeader() test on Gitlab private token.
* Add AuthHelper::addAuthenticationHeader() test on Bitbucket Oauth token.
* Add AuthHelper::addAuthenticationHeader() test on Bitbucket public urls.
* Add AuthHelper::addAuthenticationHeader() test on Basic Http Authentication.
* Add AuthHelper::isPublicBitBucketDownload() tests.
* Rename AuthHelperTest $credentials variable to $auth.
* Add AuthHelper::storeAuth() test for auto-store option.
* Add AuthHelper::storeAuth() test for user prompt and y(es) answer.
* Add AuthHelper::storeAuth() test for user prompt and n(o) answer.
* Add AuthHelper::storeAuth() test for user prompt with invalid answer.
* Add AuthHelper::promptAuthIfNeeded() test for Github authentication failure.
- add GitHub hard dependency mock (new GitHub(...) mock)
* Run AuthHelper::promptAuthIfNeeded() tests only with PHP > 5.3
* Run AuthHelper::promptAuthIfNeeded() tests only with PHP >= 5.4
* Run AuthHelper::promptAuthIfNeeded() tests only with PHP 5.4
* Exclude PHPStan analyses of '../tests/Composer/Test/Util/Mocks/*'
* Exclude AuthHelper::promptAuthIfNeeded() tests from current pull request.
* Extract repetitive AuthHelperTest authentication expectation into a method.
PackageSorter weighs the importance of a package
by counting how many times it is required by other packages.
This works by calculating the weight for each package name.
However currently the package index of the package array
is currently passed the weigh function, which basically
disables package sorting.
The reason for that is, that a package repository previously
returned the package list as associative array with package name as keys,
but currently just as an array with integer keys.
Therefore we must extract the package name from the package
before passing it to the weigh function.
