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2026-07-12 21:26:08 +08:00
commit 9dd41afd48
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+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+
+import { buildHoverPreview, firstUsefulParagraph, previewSummary } from "../src/render";
+
+describe("hover preview helpers", () => {
+  it("extracts the first useful paragraph after frontmatter and headings", () => {
+    const paragraph = firstUsefulParagraph(`---
+title: Demo
+---
+# Demo
+
+第一段说明 [[wiki/entities/A.md|节点A]] 和 [链接](https://example.com)。
+
+第二段不应该出现。`);
+
+    assert.equal(paragraph, "第一段说明 节点A 和 链接。");
+  });
+
+  it("uses explicit summary before content", () => {
+    assert.equal(
+      previewSummary({
+        summary: "显式摘要优先。",
+        content: "# 标题\n\n正文不应该出现。"
+      }),
+      "显式摘要优先。"
+    );
+  });
+
+  it("handles wikilinks, code fences, empty content, and truncation", () => {
+    assert.equal(
+      previewSummary({
+        content: "```js\nconsole.log('skip')\n```\n\n## 标题\n\n包含 [[Target|标签]] 和 `代码`。"
+      }),
+      "包含 标签 和 代码。"
+    );
+
+    assert.equal(previewSummary({ content: "" }), "");
+
+    const long = previewSummary({ content: `# 标题\n\n${"长".repeat(180)}` });
+    assert.equal(long.length <= 143, true);
+    assert.equal(long.endsWith("..."), true);
+  });
+
+  it("builds a title and type even when content is empty", () => {
+    assert.deepEqual(
+      buildHoverPreview({ id: "a", label: "节点A", type: "topic", content: "" }),
+      {
+        id: "a",
+        title: "节点A",
+        typeLabel: "主题",
+        summary: ""
+      }
+    );
+  });
+});