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test-engine: ensure atom bits are properly packed

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Let's make sure all atoms are actually used, and no holes are left.
This commit is contained in:
Lennart Poettering 2021-04-14 22:43:15 +02:00
parent 99e9af257a
commit 3ba471facb
1 changed files with 17 additions and 0 deletions
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17
src/test/test-engine.c
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@ -50,6 +50,23 @@ static void verify_dependency_atoms(void) {
multi_use_atoms |= combined & a;
combined |= a;
}
/* Make sure all atoms are used, i.e. there's at least one dependency type that references it. */
assert_se(combined == _UNIT_DEPENDENCY_ATOM_MAX);
for (UnitDependencyAtom a = 1; a <= _UNIT_DEPENDENCY_ATOM_MAX; a <<= 1) {
if (multi_use_atoms & a) {
/* If an atom is used by multiple dep types, then mapping the atom to a dependency is
* not unique and *must* fail */
assert_se(unit_dependency_from_unique_atom(a) == _UNIT_DEPENDENCY_INVALID);
continue;
}
/* If only a single dep type uses specific atom, let's guarantee our mapping table is
complete, and thus the atom can be mapped to the single dep type that is used. */
assert_se(unit_dependency_from_unique_atom(a) >= 0);
}
}
int main(int argc, char *argv[]) {