Coverage for hdl_registers/generator/test/test_register_code_generator_helpers.py: 100%

1# -------------------------------------------------------------------------------------------------- 

2# Copyright (c) Lukas Vik. All rights reserved. 

3# 

4# This file is part of the hdl-registers project, an HDL register generator fast enough to run 

5# in real time. 

6# https://hdl-registers.com 

7# https://github.com/hdl-registers/hdl-registers 

8# -------------------------------------------------------------------------------------------------- 

9 

10# Third party libraries 

11import pytest 

12 

13# First party libraries 

14from hdl_registers.generator.register_code_generator_helpers import RegisterCodeGeneratorHelpers 

15from hdl_registers.register import Register 

16from hdl_registers.register_modes import REGISTER_MODES 

17 

18 

19def test_field_setter_should_read_modify_write(): 

20 register = Register(name="", index=0, mode=REGISTER_MODES["r_w"], description="") 

21 

22 register.append_bit(name="", description="", default_value="0") 

23 assert not RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

24 

25 register.append_bit(name="", description="", default_value="0") 

26 assert RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

27 

28 register.append_bit(name="", description="", default_value="0") 

29 assert RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

30 

31 

32def test_field_setter_should_read_modify_write_should_raise_exception_if_there_are_no_fields(): 

33 register = Register(name="", index=0, mode=REGISTER_MODES["r_w"], description="") 

34 

35 with pytest.raises(AssertionError) as exception_info: 

36 RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

37 assert str(exception_info.value) == "Should not end up here if the register has no fields." 

38 

39 

40def test_field_setter_should_read_modify_write_raise_exception_if_the_register_is_not_writable(): 

41 register = Register(name="", index=0, mode=REGISTER_MODES["r"], description="") 

42 register.append_bit(name="", description="", default_value="0") 

43 

44 with pytest.raises(ValueError) as exception_info: 

45 RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

46 assert str(exception_info.value).startswith("Got non-writeable register:") 

47 

48 

49def test_to_pascal_case(): 

50 assert RegisterCodeGeneratorHelpers.to_pascal_case("test") == "Test" 

51 assert RegisterCodeGeneratorHelpers.to_pascal_case("test_two") == "TestTwo"