package render

import (
	"strings"
	"testing"
)

func TestMarkdownRendersStructure(t *testing.T) {
	out := Markdown("## 标题\n\n正文 **粗体**。\n\n- 一\n- 二\n\n> 引用\n")
	for _, want := range []string{"<h2", "<strong>粗体</strong>", "<li>一</li>", "<blockquote>"} {
		if !strings.Contains(out, want) {
			t.Errorf("missing %q in %q", want, out)
		}
	}
}

func TestMarkdownEscapesRawHTML(t *testing.T) {
	out := Markdown("<script>alert(1)</script>")
	if strings.Contains(out, "<script>") {
		t.Errorf("raw HTML should be escaped, got %q", out)
	}
}

func TestMarkdownBlocksUnsafeSchemes(t *testing.T) {
	out := Markdown(`[x](javascript:alert(1))`)
	if strings.Contains(out, "javascript:") {
		t.Errorf("unsafe scheme should be stripped, got %q", out)
	}
}

func TestReadingMinutes(t *testing.T) {
	if got := ReadingMinutes(""); got != 1 {
		t.Errorf("empty content should be 1 minute, got %d", got)
	}
	long := strings.Repeat("字", 1200)
	if got := ReadingMinutes(long); got != 3 {
		t.Errorf("1200 CJK chars should be 3 minutes, got %d", got)
	}
}

func TestExcerpt(t *testing.T) {
	got := Excerpt("# 标题\n\n这是正文。\n\n```go\nfmt.Println()\n```", 140)
	if strings.Contains(got, "fmt.Println") {
		t.Errorf("code fences should be dropped, got %q", got)
	}
	if !strings.Contains(got, "这是正文。") {
		t.Errorf("excerpt should keep body text, got %q", got)
	}
}