package server

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

// TestBlobRendersContent 回归测试：曾出现「限量读取返回空内容」的 bug——
// 限流缓冲拿到了数据，却返回了另一个空缓冲，导致所有文件预览全白。
func TestBlobRendersContent(t *testing.T) {
	srv, st, _, _ := newTestServer(t)
	dir := makeRepo(t, srv, st, "read", nil)
	commitFiles(t, dir, "init", map[string]string{"main.go": "package main\n\nfunc main() {}\n"})

	r := httptest.NewRequest(http.MethodGet, "/read/blob/main/main.go", nil)
	w := httptest.NewRecorder()
	srv.Handler().ServeHTTP(w, r)
	if w.Code != http.StatusOK {
		t.Fatalf("状态码 = %d", w.Code)
	}
	html := w.Body.String()
	for _, want := range []string{"package main", "func main"} {
		if !strings.Contains(html, want) {
			t.Errorf("页面缺少文件内容 %q，疑似读取返回空内容", want)
		}
	}
	if !strings.Contains(html, "codeline") {
		t.Error("未渲染代码视图")
	}
}

// TestReadmeRendersOnHome 确认首页能渲染 README（同样依赖 BlobLimited）。
func TestReadmeRendersOnHome(t *testing.T) {
	srv, st, _, _ := newTestServer(t)
	dir := makeRepo(t, srv, st, "doc", nil)
	commitFiles(t, dir, "init", map[string]string{"README.md": "# 标题\n\n一段说明。\n"})

	r := httptest.NewRequest(http.MethodGet, "/doc", nil)
	w := httptest.NewRecorder()
	srv.Handler().ServeHTTP(w, r)
	if w.Code != http.StatusOK {
		t.Fatalf("状态码 = %d", w.Code)
	}
	if html := w.Body.String(); !strings.Contains(html, "一段说明") {
		t.Error("README 未渲染，疑似 BlobLimited 返回空内容")
	}
}