Add test case

Author: volodymyrZotov

src/version/helper.test.ts

@@ -63,4 +63,20 @@ describe("getLatestVersion", () => {
 			`No ${ReleaseChannel.Stable} versions found`,
 		);
 	});
+
+	it("should throw if no beta version found", async () => {
+		const mockResponse = {
+			CLI2: {
+				release: { version: "2.32.0" },
+			},
+		};
+
+		jest.spyOn(global, "fetch").mockResolvedValueOnce({
+			json: async () => mockResponse,
+		} as Response);
+
+		await expect(getLatestVersion(ReleaseChannel.Beta)).rejects.toThrow(
+			`No ${ReleaseChannel.Beta} versions found`,
+		);
+	});
 });