'm2m fields help text as it applies to admin app (#9321).'

def test_m2m_widgets(self):

    class AdvisorAdmin(admin.ModelAdmin, ):
        filter_vertical = ['companies']
    self.assertFormfield(Advisor, 'companies', widgets.FilteredSelectMultiple, filter_vertical=['companies'])
    ma = AdvisorAdmin(Advisor, admin.site)
    f = ma.formfield_for_dbfield(Advisor._meta.get_field('companies'), request=None)
    self.assertEqual(f.help_text, 'Hold    down    "Control",    or    "Command"    on    a    Mac,    to    select    more    than    one.')
