Add test for POST request with wide characters (UTF-8, etc.).

This commit introduces a new test function to handle POST requests containing wide characters in the URL and headers. It ensures that the parsing logic correctly processes such requests and validates the content and headers appropriately. This enhancement improves the robustness of the HTTP request parser.

test/assert_tiny_http_server_lib.c

@@ -70,9 +70,48 @@ void test_request_post_root_curl(void) {
     destroy_http_request(http_req);
 }
 
+void test_request_post_root_curl_with_wide_chars(void) {
+    // ReSharper disable once CppVariableCanBeMadeConstexpr
+    const uint8_t request[] = "POST /one/🐌/three HTTP/1.0\r\n"
+            "Content-Type: application/json\r\n"
+            "User-Agent: PostmanRuntime/7.42.0\r\n"
+            "Accept: */*\r\n"
+            "Test-Header: 🐍\r\n"
+            "Host: localhost:8085\r\n"
+            "Accept-Encoding: gzip, deflate, br\r\n"
+            "Content-Length: 68\r\n"
+            "\r\n"
+            "{\n    \"key1\": \"🐌\",\n    \"key2\": \"value2\",\n    \"key3\": \"value3\"\n}";
+    http_request *http_req = parse_http_request(request, strlen((char *) request));
+    assert(http_req != nullptr);
+    assert(http_req->method == POST);
+    assert(http_req->version == HTTP_1_0);
+    assert(strncmp(http_req->url, "/one/🐌/three", 255) == 0);
+    assert(strncmp(http_req->headers[0]->name, "Content-Type", 255) == 0);
+    assert(strncmp(http_req->headers[0]->value, "application/json", 255) == 0);
+    assert(strncmp(http_req->headers[1]->name, "User-Agent", 255) == 0);
+    assert(strncmp(http_req->headers[1]->value, "PostmanRuntime/7.42.0", 255) == 0);
+    assert(strncmp(http_req->headers[2]->name, "Accept", 255) == 0);
+    assert(strncmp(http_req->headers[2]->value, "*/*", 255) == 0);
+    assert(strncmp(http_req->headers[3]->name, "Test-Header", 255) == 0);
+    assert(strncmp(http_req->headers[3]->value, "🐍", 255) == 0);
+    assert(strncmp(http_req->headers[4]->name, "Host", 255) == 0);
+    assert(strncmp(http_req->headers[4]->value, "localhost:8085", 255) == 0);
+    assert(strncmp(http_req->headers[5]->name, "Accept-Encoding", 255) == 0);
+    assert(strncmp(http_req->headers[5]->value, "gzip, deflate, br", 255) == 0);
+    assert(strncmp(http_req->headers[6]->name, "Content-Length", 255) == 0);
+    assert(strncmp(http_req->headers[6]->value, "68", 255) == 0);
+    assert(http_req->body_len == 68);
+    assert(
+        strncmp((char *) http_req->body,
+            "{\n    \"key1\": \"🐌\",\n    \"key2\": \"value2\",\n    \"key3\": \"value3\"\n}", 68) == 0);
+    destroy_http_request(http_req);
+}
+
 int main() {
     test_request_parse_get_root_curl();
     test_request_post_root_curl();
+    test_request_post_root_curl_with_wide_chars();
 
     return EXIT_SUCCESS;
 }