def test_get_with_sysenv_fallback_global_as_true():
    """
    When sysenv_fallback is True
    Should fallback to sys envvars for uppercase envvar-names only
    """
    settings = Dynaconf(sysenv_fallback=True)
    settings.environ["TEST_KEY"] = "TEST_VALUE"

    assert settings.sysenv_fallback_for_dynaconf is True
    assert settings.get("test_key") == "TEST_VALUE"

    When sysenv_fallback is True
    Should fallback to sys envvars for uppercase envvar-names only
    
tests/test_base.py