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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { vi, describe, it, expect, beforeEach, Mock } from 'vitest';
import { copyCommand } from './copyCommand.js';
import { type CommandContext } from './types.js';
import { createMockCommandContext } from '../../test-utils/mockCommandContext.js';
import { copyToClipboard } from '../utils/commandUtils.js';
vi.mock('../utils/commandUtils.js', () => ({
copyToClipboard: vi.fn(),
}));
describe('copyCommand', () => {
let mockContext: CommandContext;
let mockCopyToClipboard: Mock;
let mockGetChat: Mock;
let mockGetHistory: Mock;
beforeEach(() => {
vi.clearAllMocks();
mockCopyToClipboard = vi.mocked(copyToClipboard);
mockGetChat = vi.fn();
mockGetHistory = vi.fn();
mockContext = createMockCommandContext({
services: {
config: {
getGeminiClient: () => ({
getChat: mockGetChat,
}),
},
},
});
mockGetChat.mockReturnValue({
getHistory: mockGetHistory,
});
});
it('should return info message when no history is available', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
mockGetChat.mockReturnValue(undefined);
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'No output in history',
});
expect(mockCopyToClipboard).not.toHaveBeenCalled();
});
it('should return info message when history is empty', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
mockGetHistory.mockReturnValue([]);
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'No output in history',
});
expect(mockCopyToClipboard).not.toHaveBeenCalled();
});
it('should return info message when no AI messages are found in history', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithUserOnly = [
{
role: 'user',
parts: [{ text: 'Hello' }],
},
];
mockGetHistory.mockReturnValue(historyWithUserOnly);
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'No output in history',
});
expect(mockCopyToClipboard).not.toHaveBeenCalled();
});
it('should copy last AI message to clipboard successfully', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithAiMessage = [
{
role: 'user',
parts: [{ text: 'Hello' }],
},
{
role: 'model',
parts: [{ text: 'Hi there! How can I help you?' }],
},
];
mockGetHistory.mockReturnValue(historyWithAiMessage);
mockCopyToClipboard.mockResolvedValue(undefined);
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'Last output copied to the clipboard',
});
expect(mockCopyToClipboard).toHaveBeenCalledWith(
'Hi there! How can I help you?',
);
});
it('should handle multiple text parts in AI message', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithMultipleParts = [
{
role: 'model',
parts: [{ text: 'Part 1: ' }, { text: 'Part 2: ' }, { text: 'Part 3' }],
},
];
mockGetHistory.mockReturnValue(historyWithMultipleParts);
mockCopyToClipboard.mockResolvedValue(undefined);
const result = await copyCommand.action(mockContext, '');
expect(mockCopyToClipboard).toHaveBeenCalledWith('Part 1: Part 2: Part 3');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'Last output copied to the clipboard',
});
});
it('should filter out non-text parts', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithMixedParts = [
{
role: 'model',
parts: [
{ text: 'Text part' },
{ image: 'base64data' }, // Non-text part
{ text: ' more text' },
],
},
];
mockGetHistory.mockReturnValue(historyWithMixedParts);
mockCopyToClipboard.mockResolvedValue(undefined);
const result = await copyCommand.action(mockContext, '');
expect(mockCopyToClipboard).toHaveBeenCalledWith('Text part more text');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'Last output copied to the clipboard',
});
});
it('should get the last AI message when multiple AI messages exist', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithMultipleAiMessages = [
{
role: 'model',
parts: [{ text: 'First AI response' }],
},
{
role: 'user',
parts: [{ text: 'User message' }],
},
{
role: 'model',
parts: [{ text: 'Second AI response' }],
},
];
mockGetHistory.mockReturnValue(historyWithMultipleAiMessages);
mockCopyToClipboard.mockResolvedValue(undefined);
const result = await copyCommand.action(mockContext, '');
expect(mockCopyToClipboard).toHaveBeenCalledWith('Second AI response');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'Last output copied to the clipboard',
});
});
it('should handle clipboard copy error', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithAiMessage = [
{
role: 'model',
parts: [{ text: 'AI response' }],
},
];
mockGetHistory.mockReturnValue(historyWithAiMessage);
const clipboardError = new Error('Clipboard access denied');
mockCopyToClipboard.mockRejectedValue(clipboardError);
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'error',
content: 'Failed to copy to the clipboard.',
});
});
it('should handle non-Error clipboard errors', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithAiMessage = [
{
role: 'model',
parts: [{ text: 'AI response' }],
},
];
mockGetHistory.mockReturnValue(historyWithAiMessage);
mockCopyToClipboard.mockRejectedValue('String error');
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'error',
content: 'Failed to copy to the clipboard.',
});
});
it('should return info message when no text parts found in AI message', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const historyWithEmptyParts = [
{
role: 'model',
parts: [{ image: 'base64data' }], // No text parts
},
];
mockGetHistory.mockReturnValue(historyWithEmptyParts);
const result = await copyCommand.action(mockContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'Last AI output contains no text to copy.',
});
expect(mockCopyToClipboard).not.toHaveBeenCalled();
});
it('should handle unavailable config service', async () => {
if (!copyCommand.action) throw new Error('Command has no action');
const nullConfigContext = createMockCommandContext({
services: { config: null },
});
const result = await copyCommand.action(nullConfigContext, '');
expect(result).toEqual({
type: 'message',
messageType: 'info',
content: 'No output in history',
});
expect(mockCopyToClipboard).not.toHaveBeenCalled();
});
});
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