feat(test): add new tests

test/test_get_missing.c

@@ -0,0 +1,46 @@
+#include "common.h"
+#include <stdio.h>
+
+static int test_get_missing_404(void) {
+	char url[256];
+	snprintf(url, sizeof(url), "%s/does-not-exist-xyz", BASE_URL);
+	return assert_status("GET /missing returns 404", url, "GET", 404);
+}
+
+int main(int argc, char **argv) {
+	if (argc < 2) {
+		fprintf(stderr, "Usage: %s <server_binary_path>\n", argv[0]);
+		return 1;
+	}
+
+	curl_global_init(CURL_GLOBAL_DEFAULT);
+
+	const char *server_path = argv[1];
+	fprintf(stdout, "[INFO] server path: %s\n", server_path);
+
+	pid_t server_pid = -1;
+	if (!start_server(server_path, &server_pid)) {
+		curl_global_cleanup();
+		return 1;
+	}
+
+	if (!wait_until_ready()) {
+		fprintf(stderr, "[FAIL] server did not become ready in time\n");
+		stop_server(server_pid);
+		curl_global_cleanup();
+		return 1;
+	}
+
+	int failures = test_get_missing_404();
+
+	stop_server(server_pid);
+	curl_global_cleanup();
+
+	if (failures == 0) {
+		fprintf(stdout, "[PASS] test_get_missing passed\n");
+		return 0;
+	}
+
+	fprintf(stderr, "[FAIL] test_get_missing failed\n");
+	return 1;
+}