refactor progress

packages/api/src/gateway/tests/GatewayTcpFrameCodec.test.tsx

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {decodeGatewayTcpFrames, encodeGatewayTcpFrame} from '@fluxer/api/src/infrastructure/GatewayTcpFrameCodec';
+import {describe, expect, test} from 'vitest';
+
+describe('GatewayTcpFrameCodec', () => {
+	test('encodes and decodes a single frame', () => {
+		const frame = {type: 'ping'};
+		const encoded = encodeGatewayTcpFrame(frame);
+		const decoded = decodeGatewayTcpFrames(encoded);
+		expect(decoded.frames).toEqual([frame]);
+		expect(decoded.remainder.length).toBe(0);
+	});
+
+	test('decodes multiple frames with trailing partial frame', () => {
+		const frameA = {type: 'request', id: '1', method: 'process.node_stats', params: {}};
+		const frameB = {type: 'pong'};
+		const encodedA = encodeGatewayTcpFrame(frameA);
+		const encodedB = encodeGatewayTcpFrame(frameB);
+		const partial = Buffer.from('5\n{"ty', 'utf8');
+		const combined = Buffer.concat([encodedA, encodedB, partial]);
+		const decoded = decodeGatewayTcpFrames(combined);
+		expect(decoded.frames).toEqual([frameA, frameB]);
+		expect(decoded.remainder.equals(partial)).toBe(true);
+	});
+
+	test('throws on invalid frame length', () => {
+		const invalid = Buffer.from('x\n{}', 'utf8');
+		expect(() => decodeGatewayTcpFrames(invalid)).toThrow('Invalid Gateway TCP frame length');
+	});
+});