def test_blank_languages(lang, target):
    """
    Test that we can get spacy.blank in various languages, including codes
    that are defined to be equivalent or that match by CLDR language matching.
    """
    nlp = spacy.blank(lang)
    assert nlp.lang == target

    Test that we can get spacy.blank in various languages, including codes
    that are defined to be equivalent or that match by CLDR language matching.
    
spacy/tests/test_language.py