func TestSignal(t *testing.T) {
defer remove(t, "log.txt", "log.txt.TestSignal")
os.Remove("log.txt")
os.Remove("log.txt.TestSignal")
log.SetFlags(0)
defer WriteTo("log.txt").Close()
want := "signal test\n"
log.Printf(want)
err := os.Rename("log.txt", "log.txt.TestSignal")
if err != nil {
t.Fatalf("TestSignal(): %v\n", err)
}
got := readFile(t, "log.txt.TestSignal")
if got != want {
t.Fatalf("renamed log failed\nwant: '%s'\n got: '%s'", want, got)
}
sendHupSignal(t, os.Getpid())
<-time.After(1 * time.Second)
log.Println("after HUP")
want = "after HUP\n"
got = readFile(t, "log.txt")
if got != want {
t.Errorf("HUP test failed\nwant: '%s'\n got: '%s'", want, got)
}
}
func TestRotate(t *testing.T) {
os.Remove("log.txt")
os.Remove("log.txt.old")
log.SetFlags(0)
stdout := os.Stdout
stderr := os.Stderr
defer remove(t, "log.txt", "log.txt.old")
rl := WriteTo("log.txt")
defer rl.Close()
log.Println("some log")
err := os.Rename("log.txt", "log.txt.old")
if err != nil {
os.Stdout = stdout
os.Stderr = stderr
t.Fatalf("TestRotate(): %v\n", err)
}
log.Println("new filename")
got := readFile(t, "log.txt.old")
want := "some log\nnew filename\n"
if got != want {
t.Errorf("log file renamed failed\nwant: '%s'\n got: '%v'", want, got)
}
rl.rotate()
want = "This is after rotation\n"
log.Printf(want)
os.Stdout = stdout
os.Stderr = stderr
got = readFile(t, "log.txt")
if got != want {
t.Errorf("rotate() failed\nwant: '%s'\n got: '%v'", want, got)
}
}
func TestWriteTo(t *testing.T) {
defer remove(t, "log.txt")
os.Remove("log.txt")
log.SetFlags(0)
defer WriteTo("log.txt").Close()
want := "some log\n"
log.Println("some log")
fmt.Fprintln(os.Stdout, "This is from stdout")
fmt.Fprintln(os.Stderr, "This is from stderr")
got := readFile(t, "log.txt")
if got != want {
t.Errorf("\nwant: '%s'\n got: '%s'", want, got)
}
}