Add test to mintty pipe detection

internal/ui/termstatus/terminal_windows_test.go

@@ -0,0 +1,30 @@
+package termstatus
+
+import (
+	"syscall"
+	"testing"
+
+	"golang.org/x/sys/windows"
+
+	rtest "github.com/restic/restic/internal/test"
+)
+
+func TestIsMinTTY(t *testing.T) {
+	for _, test := range []struct {
+		path   string
+		result bool
+	}{
+		{`\\.\pipe\msys-dd50a72ab4668b33-pty0-to-master`, true},
+		{`\\.\pipe\msys-dd50a72ab4668b33-13244-pipe-0x16`, false},
+	} {
+		filename, err := syscall.UTF16FromString(test.path)
+		rtest.OK(t, err)
+		handle, err := windows.CreateNamedPipe(&filename[0], windows.PIPE_ACCESS_DUPLEX,
+			windows.PIPE_TYPE_BYTE, 1, 1024, 1024, 0, nil)
+		rtest.OK(t, err)
+		defer windows.CloseHandle(handle)
+
+		rtest.Assert(t, CanUpdateStatus(uintptr(handle)) == test.result,
+			"expected CanUpdateStatus(%v) == %v", test.path, test.result)
+	}
+}