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https://blitiri.com.ar/repos/chasquid
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a6a964ac3e
The testing couriers are currently only used in the queue tests, but we also want to use them in smtpsrv tests so we can make them more robusts by checking the emails got delivered. This patch moves the testing couriers to testlib, and makes both queue and smtpsrv use them.
128 lines
2.6 KiB
Go
128 lines
2.6 KiB
Go
// Package testlib provides common test utilities.
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package testlib
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import (
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"io/ioutil"
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"net"
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"os"
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"strings"
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"sync"
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"testing"
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"time"
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)
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// MustTempDir creates a temporary directory, or dies trying.
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func MustTempDir(t *testing.T) string {
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dir, err := ioutil.TempDir("", "testlib_")
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if err != nil {
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t.Fatal(err)
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}
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err = os.Chdir(dir)
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if err != nil {
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t.Fatal(err)
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}
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t.Logf("test directory: %q", dir)
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return dir
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}
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// RemoveIfOk removes the given directory, but only if we have not failed. We
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// want to keep the failed directories for debugging.
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func RemoveIfOk(t *testing.T, dir string) {
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// Safeguard, to make sure we only remove test directories.
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// This should help prevent accidental deletions.
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if !strings.Contains(dir, "testlib_") {
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panic("invalid/dangerous directory")
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}
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if !t.Failed() {
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os.RemoveAll(dir)
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}
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}
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// Rewrite a file with the given contents.
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func Rewrite(t *testing.T, path, contents string) error {
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// Safeguard, to make sure we only mess with test files.
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if !strings.Contains(path, "testlib_") {
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panic("invalid/dangerous path")
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}
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err := ioutil.WriteFile(path, []byte(contents), 0600)
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if err != nil {
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t.Errorf("failed to rewrite file: %v", err)
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}
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return err
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}
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// GetFreePort returns a free TCP port. This is hacky and not race-free, but
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// it works well enough for testing purposes.
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func GetFreePort() string {
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l, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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panic(err)
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}
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defer l.Close()
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return l.Addr().String()
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}
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func WaitFor(f func() bool, d time.Duration) bool {
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start := time.Now()
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for time.Since(start) < d {
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if f() {
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return true
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}
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time.Sleep(20 * time.Millisecond)
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}
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return false
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}
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type DeliverRequest struct {
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From string
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To string
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Data []byte
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}
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// Courier for test purposes. Never fails, and always remembers everything.
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type TestCourier struct {
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wg sync.WaitGroup
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Requests []*DeliverRequest
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ReqFor map[string]*DeliverRequest
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sync.Mutex
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}
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func (tc *TestCourier) Deliver(from string, to string, data []byte) (error, bool) {
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defer tc.wg.Done()
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dr := &DeliverRequest{from, to, data}
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tc.Lock()
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tc.Requests = append(tc.Requests, dr)
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tc.ReqFor[to] = dr
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tc.Unlock()
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return nil, false
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}
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func (tc *TestCourier) Expect(i int) {
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tc.wg.Add(i)
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}
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func (tc *TestCourier) Wait() {
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tc.wg.Wait()
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}
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// NewTestCourier returns a new, empty TestCourier instance.
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func NewTestCourier() *TestCourier {
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return &TestCourier{
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ReqFor: map[string]*DeliverRequest{},
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}
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}
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type dumbCourier struct{}
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func (c dumbCourier) Deliver(from string, to string, data []byte) (error, bool) {
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return nil, false
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}
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// Dumb courier, for when we just don't care about the result.
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var DumbCourier = dumbCourier{}
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