test: add some util tests

tests/unit/utils.spec.ts

@@ -0,0 +1,56 @@
+import {describe, test, expect} from 'vitest'
+
+import {
+  createTimings,
+  combineServerTimingHeaders
+} from '~/lib/utils/timings.server'
+
+import {pageTitle} from '~/lib/utils/page-title'
+
+describe('Timing', () => {
+  test('should create timings', async () => {
+    const {time, headers} = createTimings()
+
+    await time('runTest', 'Run Test', async () => {
+      return true
+    })
+
+    const timingHeaders = headers()
+
+    expect(timingHeaders['Server-Timing']).toMatch(/runTest/)
+
+    const timings2 = createTimings()
+
+    await timings2.time('test2', 'Test Two', async () => {
+      return true
+    })
+
+    const timing2Headers = timings2.headers()
+
+    expect(timing2Headers['Server-Timing']).toMatch(/test2/)
+
+    const combinedHeaders = combineServerTimingHeaders(
+      new Headers(timingHeaders),
+      new Headers(timing2Headers)
+    )
+
+    const combined = combinedHeaders.get('Server-Timing')
+
+    expect(combined).toMatch(/runTest/)
+    expect(combined).toMatch(/test2/)
+
+    const combined2 = combineServerTimingHeaders(
+      new Headers(timingHeaders),
+      new Headers()
+    ).get('Server-Timing')
+
+    expect(combined2).toMatch(/runTest/)
+    expect(combined2).not.toMatch(/test2/)
+  })
+})
+
+describe('Page Title', () => {
+  test('should generate a page title', () => {
+    expect(pageTitle('Test')).toBe('Net Doc / Test')
+  })
+})