chore: added tests

Author: georgiy.rusanov

test/admin-app.test.ts

@@ -0,0 +1,17 @@
+import { expect, test, describe } from 'vitest'
+import { build } from '../src/server/admin-app.js'
+
+describe('admin-app', () => {
+  test('should register metrics endpoint', async () => {
+    const app = build()
+
+    // Test that the app can be started (this will trigger plugin registration)
+    await app.ready()
+
+    // Verify that metrics endpoint is available
+    const routes = app.printRoutes()
+    expect(routes).toContain('metrics')
+
+    await app.close()
+  })
+})

test/utils.test.ts

@@ -0,0 +1,63 @@
+import { expect, test, describe } from 'vitest'
+import {
+  extractRequestForLogging,
+  translateErrorToResponseCode
+} from '../src/server/utils.js'
+import { FastifyRequest } from 'fastify'
+
+describe('server utils', () => {
+  describe('extractRequestForLogging', () => {
+    test('should handle valid pg connection string', () => {
+      const mockRequest = {
+        method: 'POST',
+        url: '/test',
+        headers: {
+          pg: 'postgresql://user:pass@localhost:5432/db',
+          'x-supabase-info': 'test-info',
+        },
+      } as FastifyRequest
+
+      const result = extractRequestForLogging(mockRequest)
+
+      expect(result).toEqual({
+        method: 'POST',
+        url: '/test',
+        pg: 'localhost',
+        opt: 'test-info',
+      })
+    })
+
+    test('should handle missing x-supabase-info header', () => {
+      const mockRequest = {
+        method: 'DELETE',
+        url: '/test',
+        headers: {
+          pg: 'postgresql://user:pass@localhost:5432/db',
+        },
+      } as FastifyRequest
+
+      const result = extractRequestForLogging(mockRequest)
+
+      expect(result).toEqual({
+        method: 'DELETE',
+        url: '/test',
+        pg: 'localhost',
+        opt: '',
+      })
+    })
+  })
+
+  describe('translateErrorToResponseCode', () => {
+    test('should return 504 for connection timeout', () => {
+      const error = { message: 'Connection terminated due to connection timeout' }
+      const result = translateErrorToResponseCode(error)
+      expect(result).toBe(504)
+    })
+
+    test('should return 503 for too many clients', () => {
+      const error = { message: 'sorry, too many clients already' }
+      const result = translateErrorToResponseCode(error)
+      expect(result).toBe(503)
+    })
+  })
+})