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* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { render } from '../../test-utils/render.js';
import {
useBackgroundTaskManager,
type BackgroundTaskManagerProps,
} from './useBackgroundTaskManager.js';
import { describe, it, expect, vi, beforeEach } from 'vitest';
import { act } from 'react';
import { type BackgroundTask } from './shellReducer.js';
describe('useBackgroundTaskManager', () => {
const setEmbeddedShellFocused = vi.fn();
const terminalHeight = 30;
beforeEach(() => {
vi.clearAllMocks();
});
const renderHook = async (props: BackgroundTaskManagerProps) => {
let hookResult: ReturnType<typeof useBackgroundTaskManager>;
function TestComponent({ p }: { p: BackgroundTaskManagerProps }) {
hookResult = useBackgroundTaskManager(p);
return null;
}
const { rerender } = await render(<TestComponent p={props} />);
return {
result: {
get current() {
return hookResult;
},
},
rerender: (newProps: BackgroundTaskManagerProps) =>
rerender(<TestComponent p={newProps} />),
};
};
it('should initialize with correct default values', async () => {
const backgroundTasks = new Map<number, BackgroundTask>();
const { result } = await renderHook({
backgroundTasks,
backgroundTaskCount: 0,
isBackgroundTaskVisible: false,
activePtyId: null,
embeddedShellFocused: false,
setEmbeddedShellFocused,
terminalHeight,
});
expect(result.current.isBackgroundTaskListOpen).toBe(false);
expect(result.current.activeBackgroundTaskPid).toBe(null);
expect(result.current.backgroundTaskHeight).toBe(0);
});
it('should auto-select the first background shell when added', async () => {
const backgroundTasks = new Map<number, BackgroundTask>();
const { result, rerender } = await renderHook({
backgroundTasks,
backgroundTaskCount: 0,
isBackgroundTaskVisible: false,
activePtyId: null,
embeddedShellFocused: false,
setEmbeddedShellFocused,
terminalHeight,
});
const newShells = new Map<number, BackgroundTask>([
[123, {} as BackgroundTask],
]);
rerender({
backgroundTasks: newShells,
backgroundTaskCount: 1,
isBackgroundTaskVisible: false,
activePtyId: null,
embeddedShellFocused: false,
setEmbeddedShellFocused,
terminalHeight,
});
expect(result.current.activeBackgroundTaskPid).toBe(123);
});
it('should reset state when all shells are removed', async () => {
const backgroundTasks = new Map<number, BackgroundTask>([
[123, {} as BackgroundTask],
]);
const { result, rerender } = await renderHook({
backgroundTasks,
backgroundTaskCount: 1,
isBackgroundTaskVisible: true,
activePtyId: null,
embeddedShellFocused: true,
setEmbeddedShellFocused,
terminalHeight,
});
act(() => {
result.current.setIsBackgroundTaskListOpen(true);
});
expect(result.current.isBackgroundTaskListOpen).toBe(true);
rerender({
backgroundTasks: new Map(),
backgroundTaskCount: 0,
isBackgroundTaskVisible: true,
activePtyId: null,
embeddedShellFocused: true,
setEmbeddedShellFocused,
terminalHeight,
});
expect(result.current.activeBackgroundTaskPid).toBe(null);
expect(result.current.isBackgroundTaskListOpen).toBe(false);
});
it('should unfocus embedded shell when no shells are active', async () => {
const backgroundTasks = new Map<number, BackgroundTask>([
[123, {} as BackgroundTask],
]);
await renderHook({
backgroundTasks,
backgroundTaskCount: 1,
isBackgroundTaskVisible: false, // Background shell not visible
activePtyId: null, // No foreground shell
embeddedShellFocused: true,
setEmbeddedShellFocused,
terminalHeight,
});
expect(setEmbeddedShellFocused).toHaveBeenCalledWith(false);
});
it('should calculate backgroundTaskHeight correctly when visible', async () => {
const backgroundTasks = new Map<number, BackgroundTask>([
[123, {} as BackgroundTask],
]);
const { result } = await renderHook({
backgroundTasks,
backgroundTaskCount: 1,
isBackgroundTaskVisible: true,
activePtyId: null,
embeddedShellFocused: true,
setEmbeddedShellFocused,
terminalHeight: 100,
});
// 100 * 0.3 = 30
expect(result.current.backgroundTaskHeight).toBe(30);
});
it('should maintain current active shell if it still exists', async () => {
const backgroundTasks = new Map<number, BackgroundTask>([
[123, {} as BackgroundTask],
[456, {} as BackgroundTask],
]);
const { result, rerender } = await renderHook({
backgroundTasks,
backgroundTaskCount: 2,
isBackgroundTaskVisible: true,
activePtyId: null,
embeddedShellFocused: true,
setEmbeddedShellFocused,
terminalHeight,
});
act(() => {
result.current.setActiveBackgroundTaskPid(456);
});
expect(result.current.activeBackgroundTaskPid).toBe(456);
// Remove the OTHER shell
const updatedShells = new Map<number, BackgroundTask>([
[456, {} as BackgroundTask],
]);
rerender({
backgroundTasks: updatedShells,
backgroundTaskCount: 1,
isBackgroundTaskVisible: true,
activePtyId: null,
embeddedShellFocused: true,
setEmbeddedShellFocused,
terminalHeight,
});
expect(result.current.activeBackgroundTaskPid).toBe(456);
});
});
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