add tests

src/state/SessionBehaviors.test.ts

@@ -0,0 +1,60 @@
+/*
+Copyright 2025 Element Creations Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { describe, expect, it, vi } from "vitest";
+import { MatrixRTCSessionEvent } from "matrix-js-sdk/lib/matrixrtc";
+import { EventEmitter } from "events";
+
+import { createKeyRotationSuppressed$ } from "./SessionBehaviors";
+import { ObservableScope } from "./ObservableScope";
+
+describe("SessionBehaviors", () => {
+  describe("createKeyRotationSuppressed$", () => {
+    it("emits initial value from isKeyRotationSuppressed", () => {
+      const scope = new ObservableScope();
+
+      const mockSession = {
+        on: vi.fn(),
+        off: vi.fn(),
+        isKeyRotationSuppressed: false,
+      };
+
+      const keyRotationSuppressed$ = createKeyRotationSuppressed$(
+        scope,
+        mockSession as any,
+      );
+
+      expect(keyRotationSuppressed$.value).toBe(false);
+      scope.end();
+    });
+
+    it("updates when KeyRotationSuppressedChanged event is emitted", () => {
+      const scope = new ObservableScope();
+      const emitter = new EventEmitter();
+
+      const mockSession = Object.assign(emitter, {
+        isKeyRotationSuppressed: false,
+      });
+
+      const keyRotationSuppressed$ = createKeyRotationSuppressed$(
+        scope,
+        mockSession as any,
+      );
+
+      expect(keyRotationSuppressed$.value).toBe(false);
+
+      emitter.emit(MatrixRTCSessionEvent.KeyRotationSuppressedChanged, true);
+
+      expect(keyRotationSuppressed$.value).toBe(true);
+
+      emitter.emit(MatrixRTCSessionEvent.KeyRotationSuppressedChanged, false);
+
+      expect(keyRotationSuppressed$.value).toBe(false);
+      scope.end();
+    });
+  });
+});