diff --git a/apps/web/src/test/pages/generate/smart-match-pool.test.ts b/apps/web/src/test/pages/generate/smart-match-pool.test.ts
index a5b12d9c3..e0a74b532 100644
--- a/apps/web/src/test/pages/generate/smart-match-pool.test.ts
+++ b/apps/web/src/test/pages/generate/smart-match-pool.test.ts
@@ -1,40 +1,33 @@
 /**
- * 智能匹配候选池数量规则单测（#1744/#1750）
+ * 智能匹配候选池数量规则单测（#1744/#1750/#1899）
  *
- * #1750 基线：模板只有片段数/结构、没有时长概念——候选池纯按「片段数 × 3」
- * （每个片段至少 3 个候选供变体间洗牌避让），不再参考任何 duration 字段；
- * 结果钳制到 [1, 200]（后端 limit 上限 200）；无片段信息时兜底 30。
+ * #1899 简化后：候选池 = 片段数(clipCount) × 3
+ * 结果钳制到 [1, 200]（后端 limit 上限 200）；clipCount <= 0 时兜底 30。
  */
 import { describe, it, expect } from "vitest"
-import { computeLimitFromSegments } from "@/pages/generate/hooks/step2-materials/useSmartMatch"
-import type { TemplateSegment } from "@/api/templates/types"
+import { computeLimitFromClipCount } from "@/pages/generate/hooks/step2-materials/useSmartMatch"
 
-function segs(n: number): TemplateSegment[] {
-  // 新规则只看片段数量，duration 字段已废弃，这里不再构造
-  return Array.from({ length: n }, () => ({}) as TemplateSegment)
-}
-
-describe("computeLimitFromSegments (#1750 候选池 = 片段数×3）", () => {
-  it("无 segments 时返回兜底 30", () => {
-    expect(computeLimitFromSegments(undefined)).toBe(30)
-    expect(computeLimitFromSegments([])).toBe(30)
+describe("computeLimitFromClipCount (#1899 候选池 = 片段数×3）", () => {
+  it("clipCount <= 0 时返回兜底 30", () => {
+    expect(computeLimitFromClipCount(0)).toBe(30)
+    expect(computeLimitFromClipCount(-1)).toBe(30)
   })
 
-  it("候选池 = 片段数 × 3（与任何时长字段无关）", () => {
-    expect(computeLimitFromSegments(segs(1))).toBe(3)
-    expect(computeLimitFromSegments(segs(3))).toBe(9)
-    expect(computeLimitFromSegments(segs(5))).toBe(15)
-    expect(computeLimitFromSegments(segs(10))).toBe(30)
+  it("候选池 = 片段数 × 3", () => {
+    expect(computeLimitFromClipCount(1)).toBe(3)
+    expect(computeLimitFromClipCount(3)).toBe(9)
+    expect(computeLimitFromClipCount(5)).toBe(15)
+    expect(computeLimitFromClipCount(10)).toBe(30)
   })
 
   it("超过上限钳制为 200（后端 limit 上限）", () => {
-    expect(computeLimitFromSegments(segs(67))).toBe(200) // 67×3=201 → 200
-    expect(computeLimitFromSegments(segs(100))).toBe(200) // 100×3=300 → 200
+    expect(computeLimitFromClipCount(67)).toBe(200) // 67×3=201 → 200
+    expect(computeLimitFromClipCount(100)).toBe(200) // 100×3=300 → 200
   })
 
-  it("任何正常片段数下 limit 均 ≥ 1", () => {
-    for (let n = 0; n <= 10; n++) {
-      expect(computeLimitFromSegments(segs(n))).toBeGreaterThanOrEqual(1)
+  it("任何正数片段数下 limit 均 ≥ 1", () => {
+    for (let n = 1; n <= 10; n++) {
+      expect(computeLimitFromClipCount(n)).toBeGreaterThanOrEqual(1)
     }
   })
 })