chore: add version and constant test

Author: avallete

test/index.test.ts

@@ -5,3 +5,4 @@ import './resource-embedding'
 import './transforms'
 import './rpc'
 import './max-affected'
+import './version-and-constants.test'

test/version-and-constants.test.ts

@@ -0,0 +1,15 @@
+import { version } from '../src/version'
+import { DEFAULT_HEADERS } from '../src/constants'
+
+describe('version', () => {
+  test('should export version string', () => {
+    expect(version).toBe('0.0.0-automated')
+  })
+})
+
+describe('constants', () => {
+  test('should have X-Client-Info header with correct format', () => {
+    expect(DEFAULT_HEADERS).toHaveProperty('X-Client-Info')
+    expect(DEFAULT_HEADERS['X-Client-Info']).toBe(`postgrest-js/${version}`)
+  })
+})