Git: mock time functions in tests.

config/setup/git_test.go

@@ -57,14 +57,14 @@ func TestIntervals(t *testing.T) {
 		check(t, err)
 
 		// wait for first background pull
-		time.Sleep(time.Millisecond * 100)
+		gittest.Sleep(time.Millisecond * 100)
 
 		// switch logger to test file
 		logFile := gittest.Open("file")
 		git.Logger = log.New(logFile, "", 0)
 
 		// sleep for the interval
-		time.Sleep(repo.Interval)
+		gittest.Sleep(repo.Interval)
 
 		// get log output
 		out, err := ioutil.ReadAll(logFile)

middleware/git/git.go

@@ -68,7 +68,7 @@ func (r *Repo) Pull() error {
 	defer r.Unlock()
 
 	// prevent a pull if the last one was less than 5 seconds ago
-	if time.Since(r.lastPull) < 5*time.Second {
+	if gos.TimeSince(r.lastPull) < 5*time.Second {
 		return nil
 	}
 

middleware/git/git_test.go

@@ -160,7 +160,7 @@ Command echo Hello successful.
 
 		before := r.repo.lastPull
 
-		time.Sleep(r.repo.Interval)
+		gittest.Sleep(r.repo.Interval)
 
 		err = r.repo.Pull()
 		after := r.repo.lastPull

middleware/git/gitos/gitos.go

@@ -5,6 +5,7 @@ import (
 	"io/ioutil"
 	"os"
 	"os/exec"
+	"time"
 )
 
 // File is an abstraction for file (os.File).
@@ -114,6 +115,33 @@ type OS interface {
 	// beginning with prefix, opens the file for reading and writing, and
 	// returns the resulting File.
 	TempFile(string, string) (File, error)
+
+	// Sleep pauses the current goroutine for at least the duration d. A
+	// negative or zero duration causes Sleep to return immediately.
+	Sleep(time.Duration)
+
+	// NewTicker returns a new Ticker containing a channel that will send the
+	// time with a period specified by the argument.
+	NewTicker(time.Duration) Ticker
+
+	// TimeSince returns the time elapsed since the argument.
+	TimeSince(time.Time) time.Duration
+}
+
+// Ticker is an abstraction for Ticker (time.Ticker)
+type Ticker interface {
+	C() <-chan time.Time
+	Stop()
+}
+
+// GitTicker is the implementation of Ticker for git.
+type GitTicker struct {
+	*time.Ticker
+}
+
+// C returns the channel on which the ticks are delivered.s
+func (g *GitTicker) C() <-chan time.Time {
+	return g.Ticker.C
 }
 
 // GitOS is the implementation of OS for git.
@@ -158,3 +186,18 @@ func (g GitOS) ReadDir(dirname string) ([]os.FileInfo, error) {
 func (g GitOS) Command(name string, args ...string) Cmd {
 	return &gitCmd{exec.Command(name, args...)}
 }
+
+// Sleep calls time.Sleep.
+func (g GitOS) Sleep(d time.Duration) {
+	time.Sleep(d)
+}
+
+// New Ticker calls time.NewTicker.
+func (g GitOS) NewTicker(d time.Duration) Ticker {
+	return &GitTicker{time.NewTicker(d)}
+}
+
+// TimeSince calls time.Since
+func (g GitOS) TimeSince(t time.Time) time.Duration {
+	return time.Since(t)
+}

middleware/git/gittest/gittest.go

@@ -19,6 +19,9 @@ var CmdOutput = "success"
 // TempFileName is the name of any file returned by mocked gitos.OS's TempFile().
 var TempFileName = "tempfile"
 
+// TimeSpeed is how faster the mocked gitos.Ticker and gitos.Sleep should run.
+var TimeSpeed = 5
+
 // dirs mocks a fake git dir if filename is "gitdir".
 var dirs = map[string][]os.FileInfo{
 	"gitdir": {
@@ -31,6 +34,11 @@ func Open(name string) gitos.File {
 	return &fakeFile{name: name}
 }
 
+// Sleep calls fake time.Sleep
+func Sleep(d time.Duration) {
+	FakeOS.Sleep(d)
+}
+
 // fakeFile is a mock gitos.File.
 type fakeFile struct {
 	name    string
@@ -70,7 +78,7 @@ func (f *fakeFile) Write(b []byte) (int, error) {
 	return len(b), nil
 }
 
-// fakeCmd is a mock git.Cmd.
+// fakeCmd is a mock gitos.Cmd.
 type fakeCmd struct{}
 
 func (f fakeCmd) Run() error {
@@ -128,7 +136,16 @@ func (f fakeInfo) Sys() interface{} {
 	return nil
 }
 
-// fakeOS is a mock git.OS.
+// fakeTicker is a mock gitos.Ticker
+type fakeTicker struct {
+	*time.Ticker
+}
+
+func (f fakeTicker) C() <-chan time.Time {
+	return f.Ticker.C
+}
+
+// fakeOS is a mock gitos.OS.
 type fakeOS struct{}
 
 func (f fakeOS) Mkdir(name string, perm os.FileMode) error {
@@ -165,3 +182,15 @@ func (f fakeOS) ReadDir(dirname string) ([]os.FileInfo, error) {
 func (f fakeOS) Command(name string, args ...string) gitos.Cmd {
 	return fakeCmd{}
 }
+
+func (f fakeOS) Sleep(d time.Duration) {
+	time.Sleep(d / time.Duration(TimeSpeed))
+}
+
+func (f fakeOS) NewTicker(d time.Duration) gitos.Ticker {
+	return &fakeTicker{time.NewTicker(d / time.Duration(TimeSpeed))}
+}
+
+func (f fakeOS) TimeSince(t time.Time) time.Duration {
+	return time.Since(t) * time.Duration(TimeSpeed)
+}

middleware/git/service.go

@@ -2,30 +2,29 @@ package git
 
 import (
 	"sync"
-	"time"
+
+	"github.com/mholt/caddy/middleware/git/gitos"
 )
 
 // repoService is the service that runs in background and periodically
 // pull from the repository.
 type repoService struct {
-	repo    *Repo
-	ticker  *time.Ticker  // ticker to tick at intervals
-	running bool          // whether service is running.
-	halt    chan struct{} // channel to notify service to halt and stop pulling.
+	repo   *Repo
+	ticker gitos.Ticker  // ticker to tick at intervals
+	halt   chan struct{} // channel to notify service to halt and stop pulling.
 }
 
 // Start starts a new background service to pull periodically.
 func Start(repo *Repo) {
 	service := &repoService{
 		repo,
-		time.NewTicker(repo.Interval),
-		true,
+		gos.NewTicker(repo.Interval),
 		make(chan struct{}),
 	}
 	go func(s *repoService) {
 		for {
 			select {
-			case <-s.ticker.C:
+			case <-s.ticker.C():
 				err := repo.Pull()
 				if err != nil {
 					logger().Println(err)

middleware/git/service_test.go

@@ -34,7 +34,7 @@ func Test(t *testing.T) {
 		}
 	}
 
-	time.Sleep(time.Second * 5)
+	gos.Sleep(time.Second * 5)
 	Services.Stop(repos[0].URL, 1)
 	if len(Services.services) != 4 {
 		t.Errorf("Expected %v service(s), found %v", 4, len(Services.services))
@@ -52,7 +52,7 @@ func Test(t *testing.T) {
 		t.Errorf("Expected %v service(s), found %v", 6, len(Services.services))
 	}
 
-	time.Sleep(time.Second * 5)
+	gos.Sleep(time.Second * 5)
 	Services.Stop(repo.URL, -1)
 	if len(Services.services) != 4 {
 		t.Errorf("Expected %v service(s), found %v", 4, len(Services.services))