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Since commit3b9a19e089("kconfig: loop as long as we changed some symbols in randconfig"), conf_set_all_new_symbols() is repeated until there is no more choice left to be shuffled. The motivation was to shuffle a choice nested in another choice. Although commit09d5873e4d("kconfig: allow only 'config', 'comment', and 'if' inside 'choice'") disallowed the nested choice structure, we must still keep3b9a19e089because there are still cases where conf_set_all_new_symbols() must iterate. scripts/kconfig/tests/choice_randomize/Kconfig is the test case. The second choice depends on 'B', which is the member of the first choice. With3b9a19e089reverted, we would never get the pattern specified by scripts/kconfig/tests/choice_randomize/expected_config2. A real example can be found in lib/Kconfig.debug. Without3b9a19e089, the randconfig would not shuffle the "Compressed Debug information" choice, which depends on DEBUG_INFO, which is derived from another choice "Debug information". My goal is to refactor Kconfig so that randconfig will work more simply, without using the loop. For now, let's add a test case to ensure all dependent choices are shuffled, as it is a somewhat tricky case for the current Kconfig. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
34 lines
838 B
Python
34 lines
838 B
Python
# SPDX-License-Identifier: GPL-2.0-only
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"""
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Randomize all dependent choices
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This is a somewhat tricky case for randconfig; the visibility of one choice is
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determined by a member of another choice. Randconfig should be able to generate
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all possible patterns.
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"""
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def test(conf):
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expected0 = False
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expected1 = False
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expected2 = False
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for i in range(100):
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assert conf.randconfig(seed=i) == 0
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if conf.config_matches('expected_config0'):
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expected0 = True
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elif conf.config_matches('expected_config1'):
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expected1 = True
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elif conf.config_matches('expected_config2'):
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expected2 = True
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else:
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assert False
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if expected0 and expected1 and expected2:
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break
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assert expected0
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assert expected1
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assert expected2
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