edit: Add a very basic test against setupTerminal.

edit/editor_test.go

@@ -0,0 +1,24 @@
+package edit
+
+import (
+	"testing"
+
+	"github.com/kr/pty"
+)
+
+func TestSetupTerminal(t *testing.T) {
+	pty, tty, err := pty.Open()
+	if err != nil {
+		t.Errorf("cannot open pty for testing setupTerminal")
+	}
+	defer pty.Close()
+	defer tty.Close()
+
+	_, err = setupTerminal(tty)
+	if err != nil {
+		t.Errorf("setupTerminal returns an error")
+	}
+	// TODO(xiaq): Test whether the interesting flags in the termios were indeed
+	// set.
+	// termios, err := sys.NewTermiosFromFd(int(tty.Fd()))
+}