From 1cb9af3ae407217511050ca836d3f0b437d39569 Mon Sep 17 00:00:00 2001
From: saravanakumardb1 <saravanakumardb1@users.noreply.github.com>
Date: Mon, 16 Feb 2026 12:15:40 -0800
Subject: [PATCH] =?UTF-8?q?test(platform-service):=20add=20usage=20route-l?=
 =?UTF-8?q?evel=20tests=20=E2=80=94=20386=20tests,=2037.9%=20stmts?=
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---
 .../src/modules/usage/routes.test.ts          | 155 ++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 services/platform-service/src/modules/usage/routes.test.ts

diff --git a/services/platform-service/src/modules/usage/routes.test.ts b/services/platform-service/src/modules/usage/routes.test.ts
new file mode 100644
index 00000000..79ffe44f
--- /dev/null
+++ b/services/platform-service/src/modules/usage/routes.test.ts
@@ -0,0 +1,155 @@
+/**
+ * Route-level tests for usage module — Fastify inject.
+ */
+
+import Fastify from 'fastify';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+const repoMock = {
+  list: vi.fn(),
+  upsert: vi.fn(),
+  getMonthlyUsage: vi.fn(),
+  getByDate: vi.fn(),
+};
+
+vi.mock('./repository.js', () => repoMock);
+
+vi.mock('../../lib/request-context.js', () => ({
+  getRequestProductId: () => 'lysnrai',
+}));
+
+const baseUsage = {
+  id: 'usg_2026-02-16_user_1',
+  productId: 'lysnrai',
+  userId: 'user_1',
+  date: '2026-02-16',
+  dictations: 5,
+  words: 250,
+  durationMs: 30000,
+  tokensUsed: 1200,
+  costUsd: 0.01,
+  model: 'gpt-4o-mini',
+  source: 'desktop',
+  createdAt: '2026-02-16T00:00:00Z',
+};
+
+describe('usageRoutes', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it('GET /usage returns usage records', async () => {
+    repoMock.list.mockResolvedValue([baseUsage]);
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({ method: 'GET', url: '/api/usage' });
+    expect(res.statusCode).toBe(200);
+    const data = JSON.parse(res.body);
+    expect(data.records).toHaveLength(1);
+    expect(data.count).toBe(1);
+  });
+
+  it('GET /usage/summary returns aggregated summary', async () => {
+    repoMock.list.mockResolvedValue([baseUsage]);
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({ method: 'GET', url: '/api/usage/summary' });
+    expect(res.statusCode).toBe(200);
+    const data = JSON.parse(res.body);
+    expect(data.totalWords).toBe(250);
+    expect(data.totalDictations).toBe(5);
+    expect(data.totalTokens).toBe(1200);
+    expect(data.modelBreakdown).toHaveLength(1);
+    expect(data.sourceBreakdown).toHaveLength(1);
+    expect(data.productBreakdown).toHaveLength(1);
+  });
+
+  it('POST /usage upserts a usage record', async () => {
+    repoMock.upsert.mockResolvedValue(baseUsage);
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/usage',
+      payload: {
+        userId: 'user_1',
+        date: '2026-02-16',
+        dictations: 5,
+        words: 250,
+        tokensUsed: 1200,
+      },
+    });
+    expect(res.statusCode).toBe(200);
+    expect(repoMock.upsert).toHaveBeenCalled();
+  });
+
+  it('POST /usage rejects invalid input', async () => {
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/usage',
+      payload: { date: 'invalid' },
+    });
+    expect(res.statusCode).toBe(400);
+  });
+
+  it('POST /usage/check-limits returns allowed status', async () => {
+    repoMock.getMonthlyUsage.mockResolvedValue({ tokens: 500, words: 200, dictations: 5 });
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/usage/check-limits',
+      payload: { userId: 'user_1', plan: 'free' },
+    });
+    expect(res.statusCode).toBe(200);
+    const data = JSON.parse(res.body);
+    expect(data.allowed).toBe(true);
+    expect(data.exceeded).toEqual([]);
+  });
+
+  it('POST /usage/check-limits detects exceeded limits', async () => {
+    repoMock.getMonthlyUsage.mockResolvedValue({ tokens: 20000, words: 10000, dictations: 200 });
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/usage/check-limits',
+      payload: { userId: 'user_1', plan: 'free' },
+    });
+    expect(res.statusCode).toBe(200);
+    const data = JSON.parse(res.body);
+    expect(data.allowed).toBe(false);
+    expect(data.exceeded.length).toBeGreaterThan(0);
+  });
+
+  it('POST /usage/check-limits rejects invalid plan', async () => {
+    const { usageRoutes } = await import('./routes.js');
+    const app = Fastify({ logger: false });
+    await app.register(usageRoutes, { prefix: '/api' });
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/usage/check-limits',
+      payload: { userId: 'user_1', plan: 'invalid' },
+    });
+    expect(res.statusCode).toBe(400);
+  });
+});