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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 { applyCommunityEnter } from "../src/lib/graph-community-enter";
+import type { GraphEngine, Selection } from "@llm-wiki/graph-engine";
+
+describe("applyCommunityEnter", () => {
+	it("clears the prior selection highlight before focusing the community", () => {
+		const calls: string[] = [];
+		const selection: Selection = {
+			id: "community:alpha",
+			nodeIds: ["a1"],
+			communityIds: ["alpha"],
+			facts: { pageCount: 1, internalLinkCount: 0, communityCount: 1, isolatedCount: 1 },
+			input: { kind: "community", id: "alpha" },
+			actions: [],
+		};
+		const engine = {
+			clearSelection() {
+				calls.push("clear");
+			},
+			focusCommunity(id: string) {
+				calls.push(`focus:${id}`);
+				return selection;
+			},
+		} as unknown as GraphEngine;
+
+		const result = applyCommunityEnter(engine, "alpha");
+
+		assert.deepEqual(calls, ["clear", "focus:alpha"]);
+		assert.equal(result, null);
+	});
+});