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[M5+] nix_cmake_scan filters Find*.cmake shims and picks public targets

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This commit is contained in:
Amadey Vorontsov
2026-05-10 16:18:22 +00:00
parent 6e280becbe
commit b8171e3d03
3 changed files with 105 additions and 0 deletions
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31
tests/nix_cmake_scan_parse.cpp
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@@ -5,6 +5,7 @@ import cargoxx.util;
import std;
using cargoxx::resolver::config_stem_to_package;
using cargoxx::resolver::filter_public_targets;
using cargoxx::resolver::nix_cmake_scan;
using cargoxx::resolver::scan_imported_targets;
using cargoxx::util::ErrorCode;
@@ -64,6 +65,36 @@ TEST_CASE("scan_imported_targets does not match _add_library or similar",
REQUIRE(out.empty());
}
TEST_CASE("filter_public_targets keeps namespaced targets when present",
"[resolver][nix_cmake_scan]") {
auto out = filter_public_targets(
{"fmt::fmt", "fmt::fmt-header-only", "fmt_internal_helper"}, "fmt");
REQUIRE(out == std::vector<std::string>{"fmt::fmt", "fmt::fmt-header-only"});
}
TEST_CASE("filter_public_targets picks the umbrella when no targets are namespaced",
"[resolver][nix_cmake_scan]") {
// Mirrors LLVMExports: 213 bare targets, only `LLVM` is the
// intended downstream entry point.
auto out = filter_public_targets(
{"LLVM", "LLVMSupport", "LLVMCore", "LLVMWindowsManifest"}, "LLVM");
REQUIRE(out == std::vector<std::string>{"LLVM"});
}
TEST_CASE("filter_public_targets is case-insensitive when picking the umbrella",
"[resolver][nix_cmake_scan]") {
auto out = filter_public_targets({"GRPC", "grpc_internal"}, "gRPC");
REQUIRE(out == std::vector<std::string>{"GRPC"});
}
TEST_CASE("filter_public_targets keeps everything when no umbrella matches",
"[resolver][nix_cmake_scan]") {
// Stem doesn't match any bare target — fall back to passthrough so
// we still emit a non-empty link line.
auto out = filter_public_targets({"alpha", "beta", "gamma"}, "Whatever");
REQUIRE(out == std::vector<std::string>{"alpha", "beta", "gamma"});
}
TEST_CASE("scan_imported_targets dedupes duplicate target names",
"[resolver][nix_cmake_scan]") {
constexpr std::string_view text = R"(