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package cursor
import (
"log"
"os"
"testing"
)
// TestCustomIOWriter tests the cursor functions with a custom Writer.
func TestCustomIOWriter(t *testing.T) {
tmpFile, err := os.CreateTemp("", "testingTmpFile-")
defer os.Remove(tmpFile.Name())
if err != nil {
log.Fatal(err)
}
w := tmpFile
SetTarget(w)
Up(2)
expected := "\x1b[2A"
actual := getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
Down(2)
expected = "\x1b[2B"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
Right(2)
expected = "\x1b[2C"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
Left(2)
expected = "\x1b[2D"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
Hide()
expected = "\x1b[?25l"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
Show()
expected = "\x1b[?25h"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
ClearLine()
expected = "\x1b[2K"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
clearFile(t, w)
HorizontalAbsolute(3)
expected = "\x1b[4G"
actual = getFileContent(t, w.Name())
if expected != actual {
t.Errorf("wanted: %v, got %v", expected, actual)
}
}
func getFileContent(t *testing.T, fileName string) string {
t.Helper()
content, err := os.ReadFile(fileName)
if err != nil {
t.Errorf("failed to read file contents: %s", err)
return ""
}
return string(content)
}
func clearFile(t *testing.T, file *os.File) {
t.Helper()
err := file.Truncate(0)
if err != nil {
t.Errorf("failed to clear file")
return
}
_, err = file.Seek(0, 0)
if err != nil {
t.Errorf("failed to clear file")
return
}
}
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