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package preview

import (
	"strings"
	"testing"
)

func TestRenderProducesContent(t *testing.T) {
	m := New("dark")
	m.SetSize(80, 20)
	if err := m.Render("# Title\n\nsome **bold** text"); err != nil {
		t.Fatal(err)
	}
	out := m.View()
	if strings.TrimSpace(out) == "" {
		t.Error("preview view is empty after Render")
	}
	if !strings.Contains(out, "Title") {
		t.Errorf("rendered output missing heading text: %q", out)
	}
}

func TestRenderUnknownStyleFallsBack(t *testing.T) {
	m := New("definitely-not-a-real-style")
	m.SetSize(80, 20)
	if err := m.Render("hello"); err != nil {
		t.Errorf("unknown style should fall back, got error %v", err)
	}
}