import { describe, it, expect, beforeEach, vi } from "vitest";
import { DeviceStateManager } from "../../src/services/device-state.js";
describe("DeviceStateManager", () => {
let state: DeviceStateManager;
beforeEach(() => {
state = new DeviceStateManager();
});
describe("current device", () => {
it("starts with no device selected", () => {
expect(state.getCurrentDevice()).toBeNull();
});
it("selects a device", () => {
state.setCurrentDevice({
id: "emulator-5554",
type: "emulator",
name: "Pixel_7_API_34",
status: "online",
});
const device = state.getCurrentDevice();
expect(device?.id).toBe("emulator-5554");
expect(device?.type).toBe("emulator");
});
it("clears the current device", () => {
state.setCurrentDevice({
id: "emulator-5554",
type: "emulator",
name: "Pixel_7_API_34",
status: "online",
});
state.clearCurrentDevice();
expect(state.getCurrentDevice()).toBeNull();
});
});
describe("requireCurrentDevice", () => {
it("throws when no device selected", () => {
expect(() => state.requireCurrentDevice()).toThrow("No device selected");
});
it("returns device when selected", () => {
state.setCurrentDevice({
id: "emulator-5554",
type: "emulator",
name: "Pixel_7_API_34",
status: "online",
});
const device = state.requireCurrentDevice();
expect(device.id).toBe("emulator-5554");
});
});
describe("auto-selection", () => {
it("auto-selects when only one device available", () => {
const devices = [
{ id: "emulator-5554", type: "emulator" as const, name: "Pixel", status: "online" as const },
];
state.autoSelectIfSingle(devices);
expect(state.getCurrentDevice()?.id).toBe("emulator-5554");
});
it("does not auto-select when multiple devices available", () => {
const devices = [
{ id: "emulator-5554", type: "emulator" as const, name: "Pixel", status: "online" as const },
{ id: "emulator-5556", type: "emulator" as const, name: "Nexus", status: "online" as const },
];
state.autoSelectIfSingle(devices);
expect(state.getCurrentDevice()).toBeNull();
});
});
describe("ensureDevice", () => {
it("returns current device if already selected", async () => {
const device = { id: "emulator-5554", type: "emulator" as const, name: "test", status: "online" as const };
state.setCurrentDevice(device);
const mockAdb = { getDevices: vi.fn() };
const result = await state.ensureDevice(mockAdb as any);
expect(result).toBe(device);
expect(mockAdb.getDevices).not.toHaveBeenCalled();
});
it("auto-selects when exactly one device connected", async () => {
const device = { id: "emulator-5554", type: "emulator" as const, name: "test", status: "online" as const };
const mockAdb = { getDevices: vi.fn().mockResolvedValue([device]) };
const result = await state.ensureDevice(mockAdb as any);
expect(result).toEqual(device);
expect(state.getCurrentDevice()).toEqual(device);
});
it("throws NO_DEVICES when no devices connected", async () => {
const mockAdb = { getDevices: vi.fn().mockResolvedValue([]) };
await expect(state.ensureDevice(mockAdb as any)).rejects.toMatchObject({
code: "NO_DEVICES",
suggestion: expect.stringContaining("emulator"),
});
});
it("throws MULTIPLE_DEVICES when multiple devices connected", async () => {
const devices = [
{ id: "emulator-5554", type: "emulator" as const, name: "test1", status: "online" as const },
{ id: "device-1234", type: "physical" as const, name: "test2", status: "online" as const },
];
const mockAdb = { getDevices: vi.fn().mockResolvedValue(devices) };
await expect(state.ensureDevice(mockAdb as any)).rejects.toMatchObject({
code: "MULTIPLE_DEVICES",
message: expect.stringContaining("emulator-5554"),
});
});
});
});
