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package term
import (
"os"
"testing"
"golang.org/x/sys/windows"
)
func TestSetupForEval(t *testing.T) {
// open CONOUT$ manually because os.Stdout is redirected during testing
out := openFile(t, "CONOUT$", os.O_RDWR, 0)
defer out.Close()
// Start with ENABLE_VIRTUAL_TERMINAL_PROCESSING
initialOutMode := getConsoleMode(t, out) | windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
setConsoleMode(t, out, initialOutMode)
// Clear ENABLE_VIRTUAL_TERMINAL_PROCESSING
modifiedOutMode := initialOutMode &^ windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
setConsoleMode(t, out, modifiedOutMode)
// Check that SetupForEval sets ENABLE_VIRTUAL_TERMINAL_PROCESSING without
// changing other bits
restore := setupForEval(nil, out)
if got := getConsoleMode(t, out); got != initialOutMode {
t.Errorf("got console mode %v, want %v", got, initialOutMode)
}
// Check that restore is a no-op
setConsoleMode(t, out, modifiedOutMode)
restore()
if got := getConsoleMode(t, out); got != modifiedOutMode {
t.Errorf("got console mode %v, want %v", got, modifiedOutMode)
}
}
func openFile(t *testing.T, name string, flag int, perm os.FileMode) *os.File {
t.Helper()
out, err := os.OpenFile(name, flag, perm)
if err != nil {
t.Fatalf("open %s: %v", name, err)
}
return out
}
func setConsoleMode(t *testing.T, file *os.File, mode uint32) {
t.Helper()
err := windows.SetConsoleMode(windows.Handle(file.Fd()), mode)
if err != nil {
t.Fatal("SetConsoleMode:", err)
}
}
func getConsoleMode(t *testing.T, file *os.File) uint32 {
t.Helper()
var mode uint32
err := windows.GetConsoleMode(windows.Handle(file.Fd()), &mode)
if err != nil {
t.Fatal("GetConsoleMode:", err)
}
return mode
}
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