//nolint:testpackage // white-box tests reach unexported state (approved 2026-07-07)
package game

// testTerm is a headless Terminal for tests: rendering is a no-op and
// input plays a script, then alternates space/newline so that --More--
// and [Press return] prompts never block.
type testTerm struct {
	input []byte
	pos   int
	tick  int
	// repaints counts forced full redraws. Rendering is a no-op here, so
	// counting is the only way a headless test can tell that CTRL-R asked
	// for a repaint rather than an ordinary refresh — the two are
	// indistinguishable in the window contents, which is the whole reason
	// the bug this replaces went unnoticed.
	repaints int
}

func (t *testTerm) Render(*Window) {}

func (t *testTerm) Repaint() { t.repaints++ }

func (t *testTerm) Fini() {}

// Interrupt has nothing to wake: this terminal's ReadChar never blocks.
// The blocking case has its own fake, blockingTerm in autosave_test.go.
func (t *testTerm) Interrupt() {}

func (t *testTerm) ReadChar() (byte, bool) {
	if t.pos < len(t.input) {
		c := t.input[t.pos]
		t.pos++

		return c, true
	}

	t.tick++
	if t.tick%2 == 0 {
		return '\n', true
	}

	return ' ', true
}