fix: polish Google Chat plugin (#1635) (thanks @iHildy)

Co-authored-by: Ian Hildebrand <ian@jedi.net>

extensions/googlechat/src/targets.test.ts

@@ -0,0 +1,35 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  isGoogleChatSpaceTarget,
+  isGoogleChatUserTarget,
+  normalizeGoogleChatTarget,
+} from "./targets.js";
+
+describe("normalizeGoogleChatTarget", () => {
+  it("normalizes provider prefixes", () => {
+    expect(normalizeGoogleChatTarget("googlechat:users/123")).toBe("users/123");
+    expect(normalizeGoogleChatTarget("google-chat:spaces/AAA")).toBe("spaces/AAA");
+    expect(normalizeGoogleChatTarget("gchat:user:User@Example.com")).toBe(
+      "users/user@example.com",
+    );
+  });
+
+  it("normalizes email targets to users/<email>", () => {
+    expect(normalizeGoogleChatTarget("User@Example.com")).toBe("users/user@example.com");
+    expect(normalizeGoogleChatTarget("users/User@Example.com")).toBe("users/user@example.com");
+  });
+
+  it("preserves space targets", () => {
+    expect(normalizeGoogleChatTarget("space:spaces/BBB")).toBe("spaces/BBB");
+    expect(normalizeGoogleChatTarget("spaces/CCC")).toBe("spaces/CCC");
+  });
+});
+
+describe("target helpers", () => {
+  it("detects user and space targets", () => {
+    expect(isGoogleChatUserTarget("users/abc")).toBe(true);
+    expect(isGoogleChatSpaceTarget("spaces/abc")).toBe(true);
+    expect(isGoogleChatUserTarget("spaces/abc")).toBe(false);
+  });
+});