Function TestTell

tail_test.go:261–293

(t *testing.T)

}

func TestTell(t *testing.T) {
	tailTest := NewTailTest("tell-position", t)
	tailTest.CreateFile("test.txt", "hello\nworld\nagain\nmore\n")
	config := Config{
		Follow:   false,
		Location: &SeekInfo{0, os.SEEK_SET}}
	tail := tailTest.StartTail("test.txt", config)
	// read noe line
	<-tail.Lines
	offset, err := tail.Tell()
	if err != nil {
		tailTest.Errorf("Tell return error: %s", err.Error())
	}
	tail.Done()
	// tail.close()

	config = Config{
		Follow:   false,
		Location: &SeekInfo{offset, os.SEEK_SET}}
	tail = tailTest.StartTail("test.txt", config)
	for l := range tail.Lines {
		// it may readed one line in the chan(tail.Lines),
		// so it may lost one line.
		if l.Text != "world" && l.Text != "again" {
			tailTest.Fatalf("mismatch; expected world or again, but got %s",
				l.Text)
		}
		break
	}
	tailTest.RemoveFile("test.txt")
	tail.Done()
	tail.Cleanup()
}

func TestBlockUntilExists(t *testing.T) {
	tailTest := NewTailTest("block-until-file-exists", t)