kconfig: tests: check unneeded "is not set" with unmet dependency

Commit cb67ab2cd2 ("kconfig: do not write choice values when their
dependency becomes n") fixed a problem where "# CONFIG_... is not set"
for choice values are wrongly written into the .config file when they
are once visible, then become invisible later.

Add a test for this naive case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
This commit is contained in:
Masahiro Yamada 2018-03-13 18:12:07 +09:00
parent b76960c0f6
commit 930c429a65
4 changed files with 39 additions and 0 deletions

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config A
bool "A"
choice
prompt "Choice ?"
depends on A
config CHOICE_B
bool "Choice B"
config CHOICE_C
bool "Choice C"
endchoice

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"""
Do not write choice values to .config if the dependency is unmet.
"# CONFIG_... is not set" should not be written into the .config file
for symbols with unmet dependency.
This was not working correctly for choice values because choice needs
a bit different symbol computation.
This checks that no unneeded "# COFIG_... is not set" is contained in
the .config file.
Related Linux commit: cb67ab2cd2b8abd9650292c986c79901e3073a59
"""
def test(conf):
assert conf.oldaskconfig('config', 'n') == 0
assert conf.config_matches('expected_config')

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CONFIG_A=y

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#
# Automatically generated file; DO NOT EDIT.
# Linux Kernel Configuration
#
# CONFIG_A is not set