test_formatters.py 文件源码

def test_lookup_by_type_string():
    f = PlainTextFormatter()
    type_str = '%s.%s' % (C.__module__, 'C')
    f.for_type(type_str, foo_printer)

    # verify insertion
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(type_str), foo_printer)
    # lookup by string doesn't cause import
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(C), foo_printer)
    # should move from deferred to imported dict
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)