Both assertContains() and assertNotContains() are deprecated in PHPUnit 8
for operations on strings. Also the optional case parameter is. All uses
must be changed to one of:
- assertStringContainsString()
- assertStringContainsStringIgnoringCase()
- assertStringNotContainsString()
- assertStringNotContainsStringIgnoringCase()
More info: https://github.com/sebastianbergmann/phpunit/issues/3422
Regexp to find all uses:
ag 'assert(Not)?Contains\('
