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labels: implement parse_delta_labels

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Convenience function for parsing a series of delta labels; add tests as well.
This commit is contained in:
Dirk-Jan C. Binnema
2025-08-27 08:34:16 +03:00
committed by Seth Ladygo
parent ee42d90b51
commit d07a5bc2c1
2 changed files with 56 additions and 2 deletions
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46
lib/message/mu-labels.cc
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@ -100,6 +100,26 @@ Mu::Labels::parse_delta_label(const std::string &expr)
}
Result<DeltaLabelVec>
Mu::Labels::parse_delta_labels(const std::string& exprs,
const std::string sepa)
{
DeltaLabelVec deltas{};
for (const auto& expr: split(exprs, sepa)) {
if (auto delta = parse_delta_label(expr); !delta)
return Err(std::move(delta.error()));
else
deltas.emplace_back(*delta);
}
return Ok(std::move(deltas));
}
struct cmp_delta_label { // can not yet be a λ in C++17
bool operator()(const DeltaLabel& dl1, const DeltaLabel& dl2) const {
return dl1.second < dl2.second;
@ -182,6 +202,29 @@ test_parse_delta_label()
g_assert_false(!!parse_delta_label("-😨"));
}
static void
test_parse_delta_labels()
{
{
const auto deltas = parse_delta_labels("+foo,-bar@cuux",",");
assert_valid_result(deltas);
g_assert_true(deltas->at(0).first == Delta::Add);
assert_equal(deltas->at(0).second, "foo");
g_assert_true(deltas->at(1).first == Delta::Remove);
assert_equal(deltas->at(1).second, "bar@cuux");
}
{
const auto expr = parse_delta_labels("+foo @boo🐂", " ");
g_assert_false(!!expr);
}
}
static void
test_validate_label()
{
@ -229,18 +272,17 @@ test_updated_labels()
assert_eq({}, delta_labels({"-fnorb", "-fnorb", "+whiteward", "+altesia", "+fnorb"}),
{"altesia", "fnorb", "whiteward"}, delta_labels({"+altesia", "+fnorb", "+whiteward"}));
assert_eq({"piranesi", "hyperion", "mordor", "piranesi"}, delta_labels({}),
{"hyperion", "mordor", "piranesi"}, delta_labels({}));
}
int
main(int argc, char* argv[])
{
mu_test_init(&argc, &argv);
g_test_add_func("/message/labels/parse-delta-label", test_parse_delta_label);
g_test_add_func("/message/labels/parse-delta-labels", test_parse_delta_labels);
g_test_add_func("/message/labels/validate-label", test_validate_label);
g_test_add_func("/message/labels/updated-labels", test_updated_labels);