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 

10import pytest 

11 

12from hdl_registers.generator.register_code_generator_helpers import RegisterCodeGeneratorHelpers 

13from hdl_registers.register import Register 

14from hdl_registers.register_modes import REGISTER_MODES 

15 

16 

17def test_field_setter_should_read_modify_write(): 

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

19 

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

21 assert not RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

22 

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

24 assert RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

25 

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

27 assert RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

28 

29 

30def test_field_setter_should_read_modify_write_should_raise_exception_if_there_are_no_fields(): 

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

32 

33 with pytest.raises(ValueError) as exception_info: 

34 RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

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

36 

37 

38def test_field_setter_should_read_modify_write_raise_exception_if_the_register_is_not_writable(): 

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

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

41 

42 with pytest.raises(ValueError) as exception_info: 

43 RegisterCodeGeneratorHelpers.field_setter_should_read_modify_write(register) 

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

45 

46 

47def test_to_pascal_case(): 

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

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