[M5] add cargoxx add/remove (linkdb-validated)

tests/cmd_add.cpp

@@ -0,0 +1,101 @@
+#include <catch2/catch_test_macros.hpp>
+
+import cargoxx.cli;
+import cargoxx.manifest;
+import cargoxx.util;
+import std;
+
+using cargoxx::cli::cmd_add;
+using cargoxx::cli::cmd_new;
+using cargoxx::util::ErrorCode;
+namespace manifest = cargoxx::manifest;
+
+namespace {
+
+auto fresh_dir() -> std::filesystem::path {
+    auto d = std::filesystem::temp_directory_path() /
+             std::format("cargoxx-add-test-{}", std::random_device{}());
+    std::filesystem::create_directories(d);
+    return d;
+}
+
+auto overlay_path(const std::filesystem::path& dir) -> std::filesystem::path {
+    return dir / "overlay.sqlite";
+}
+
+auto scaffold(const std::filesystem::path& parent) -> std::filesystem::path {
+    REQUIRE(cmd_new("app", false, parent).has_value());
+    return parent / "app";
+}
+
+} // namespace
+
+TEST_CASE("cmd_add appends a string-form dependency", "[cli][add]") {
+    auto parent = fresh_dir();
+    auto root = scaffold(parent);
+
+    auto r = cmd_add(root, "fmt", "10.2.0", {}, overlay_path(parent));
+    REQUIRE(r.has_value());
+
+    auto m = manifest::parse(root / "Cargoxx.toml");
+    REQUIRE(m.has_value());
+    REQUIRE(m->dependencies.size() == 1);
+    REQUIRE(m->dependencies[0].name == "fmt");
+    REQUIRE(m->dependencies[0].version_spec == "10.2.0");
+    REQUIRE(m->dependencies[0].components.empty());
+}
+
+TEST_CASE("cmd_add stores components when provided", "[cli][add]") {
+    auto parent = fresh_dir();
+    auto root = scaffold(parent);
+
+    auto r = cmd_add(root, "boost", "1.84.0", {"filesystem", "system"},
+                     overlay_path(parent));
+    REQUIRE(r.has_value());
+
+    auto m = manifest::parse(root / "Cargoxx.toml");
+    REQUIRE(m.has_value());
+    REQUIRE(m->dependencies.size() == 1);
+    REQUIRE(m->dependencies[0].name == "boost");
+    REQUIRE(m->dependencies[0].components ==
+            std::vector<std::string>{"filesystem", "system"});
+}
+
+TEST_CASE("cmd_add rejects an empty version", "[cli][add]") {
+    auto parent = fresh_dir();
+    auto root = scaffold(parent);
+
+    auto r = cmd_add(root, "fmt", "", {}, overlay_path(parent));
+    REQUIRE_FALSE(r.has_value());
+    REQUIRE(r.error().code == ErrorCode::ManifestVersionInvalid);
+}
+
+TEST_CASE("cmd_add rejects an unknown package", "[cli][add]") {
+    auto parent = fresh_dir();
+    auto root = scaffold(parent);
+
+    auto r = cmd_add(root, "obscurelib", "0.0.1", {}, overlay_path(parent));
+    REQUIRE_FALSE(r.has_value());
+    REQUIRE(r.error().code == ErrorCode::LinkdbUnknownPackage);
+}
+
+TEST_CASE("cmd_add rejects an already-declared dep", "[cli][add]") {
+    auto parent = fresh_dir();
+    auto root = scaffold(parent);
+
+    REQUIRE(cmd_add(root, "fmt", "10.2.0", {}, overlay_path(parent)).has_value());
+
+    auto r = cmd_add(root, "fmt", "10.3.0", {}, overlay_path(parent));
+    REQUIRE_FALSE(r.has_value());
+    REQUIRE(r.error().code == ErrorCode::ManifestInvalidField);
+}
+
+TEST_CASE("cmd_add rejects componentized package without components",
+          "[cli][add]") {
+    auto parent = fresh_dir();
+    auto root = scaffold(parent);
+
+    auto r = cmd_add(root, "boost", "1.84.0", {}, overlay_path(parent));
+    REQUIRE_FALSE(r.has_value());
+    REQUIRE(r.error().code == ErrorCode::LinkdbComponentNotSupported);
+}