[M6] tests: levenshtein + pc_scan + brute_scan + findmodule_scan + last_failure_dir + cmd_linkdb_add + codegen PkgConfig/brute-force

tests/cmd_linkdb_add.cpp

@@ -0,0 +1,65 @@
+#include <catch2/catch_test_macros.hpp>
+
+import cargoxx.cli;
+import cargoxx.linkdb;
+import cargoxx.util;
+import std;
+
+using cargoxx::cli::cmd_linkdb_add;
+using cargoxx::linkdb::Database;
+
+namespace {
+
+auto fresh_overlay() -> std::filesystem::path {
+    auto d = std::filesystem::temp_directory_path() /
+             std::format("cargoxx-linkdb-add-test-{}", std::random_device{}());
+    std::filesystem::create_directories(d);
+    return d / "overlay.sqlite";
+}
+
+} // namespace
+
+TEST_CASE("cmd_linkdb_add inserts a recipe that resolve() can read back",
+          "[cli][linkdb_add]") {
+    auto overlay = fresh_overlay();
+
+    auto r = cmd_linkdb_add(
+        "sqlite3", "*", "SQLite3 REQUIRED", {"SQLite::SQLite3"}, "sqlite",
+        overlay);
+    REQUIRE(r.has_value());
+
+    auto db = Database::open(overlay);
+    REQUIRE(db.has_value());
+    auto rec = db->resolve("sqlite3", "*");
+    REQUIRE(rec.has_value());
+    REQUIRE(rec->source == "manual");
+    REQUIRE(rec->find_package == "SQLite3 REQUIRED");
+    REQUIRE(rec->targets == std::vector<std::string>{"SQLite::SQLite3"});
+    REQUIRE(rec->nixpkgs_attr == "sqlite");
+}
+
+TEST_CASE("cmd_linkdb_add evicts auto-discovered rows for the same package",
+          "[cli][linkdb_add]") {
+    auto overlay = fresh_overlay();
+    auto db = Database::open(overlay);
+    REQUIRE(db.has_value());
+
+    // Seed an auto-source row first.
+    cargoxx::linkdb::Recipe auto_recipe{
+        .nixpkgs_attr = "sqlite",
+        .find_package = "auto CONFIG REQUIRED",
+        .targets = {"auto::auto"},
+        .source = "nix-probe",
+    };
+    REQUIRE(db->insert_provisional("sqlite3", "*", auto_recipe, "nix-probe")
+                .has_value());
+    REQUIRE(db->confirm_provisional("sqlite3", "*", "nix-probe").has_value());
+
+    REQUIRE(cmd_linkdb_add("sqlite3", "*", "SQLite3 REQUIRED",
+                             {"SQLite::SQLite3"}, "sqlite", overlay)
+                .has_value());
+
+    auto rec = db->resolve("sqlite3", "*");
+    REQUIRE(rec.has_value());
+    REQUIRE(rec->source == "manual");
+}