Function validateTestPrerequisites

caddytest/caddytest.go:267–302

validateTestPrerequisites ensures the certificates are available in the designated path and Caddy sub-process is running.

(tc *Tester)

// validateTestPrerequisites ensures the certificates are available in the
// designated path and Caddy sub-process is running.
func validateTestPrerequisites(tc *Tester) error {
	// check certificates are found
	for _, certName := range tc.config.Certificates {
		if _, err := os.Stat(getIntegrationDir() + certName); errors.Is(err, fs.ErrNotExist) {
			return fmt.Errorf("caddy integration test certificates (%s) not found", certName)
		}
	}

	if isCaddyAdminRunning(tc) != nil {
		// setup the init config file, and set the cleanup afterwards
		f, err := os.CreateTemp("", "")
		if err != nil {
			return err
		}
		tc.t.Cleanup(func() {
			os.Remove(f.Name()) //nolint:gosec // false positive, filename comes from std lib, no path traversal
		})
		if _, err := fmt.Fprintf(f, initConfig, tc.config.AdminPort); err != nil {
			return err
		}

		// start inprocess caddy server
		os.Args = []string{"caddy", "run", "--config", f.Name(), "--adapter", "caddyfile"}
		go func() {
			caddycmd.Main()
		}()

		// wait for caddy to start serving the initial config
		for retries := 10; retries > 0 && isCaddyAdminRunning(tc) != nil; retries-- {
			time.Sleep(1 * time.Second)
		}
	}

	// one more time to return the error
	return isCaddyAdminRunning(tc)
}

func isCaddyAdminRunning(tc *Tester) error {
	// assert that caddy is running