add force-rerun tests and vitest config

test/related/force-rerun.vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    include: ['tests/related.test.ts'],
+    forceRerunTriggers: ['**/rerun.temp/**'],
+  },
+})

test/related/tests/force-rerun.test.ts

@@ -0,0 +1,24 @@
+import { unlink, writeFile } from 'fs'
+import { beforeEach, describe, expect, it } from 'vitest'
+import { execa } from 'execa'
+
+const run = async () => await execa('vitest', ['run', '--changed', '--config', 'force-rerun.vitest.config.ts'])
+
+const fileName = 'rerun.temp'
+
+describe('forceRerunTrigger', () => {
+  beforeEach(async () => {
+    unlink(fileName, () => {})
+  })
+
+  it('should run the whole test suite if file exists', async () => {
+    writeFile(fileName, '', error => console.error(error))
+    const { stdout } = await run()
+    expect(stdout).toContain('1 passed')
+  })
+
+  it('should run no tests if file does not exist', async () => {
+    const { stdout } = await run()
+    expect(stdout).toContain('No test files found, exiting with code 0')
+  })
+})