uploader.test.ts
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import type { AxiosRequestConfig, AxiosResponse } from 'axios';
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { FileUploader } from './uploader';
describe('fileUploader', () => {
let fileUploader: FileUploader;
// Mock the AxiosInstance
const mockAxiosInstance = {
post: vi.fn(),
} as any;
beforeEach(() => {
fileUploader = new FileUploader(mockAxiosInstance);
});
it('should create an instance of FileUploader', () => {
expect(fileUploader).toBeInstanceOf(FileUploader);
});
it('should upload a file and return the response', async () => {
const url = 'https://example.com/upload';
const file = new File(['file content'], 'test.txt', { type: 'text/plain' });
const mockResponse: AxiosResponse = {
config: {} as any,
data: { success: true },
headers: {},
status: 200,
statusText: 'OK',
};
(
mockAxiosInstance.post as unknown as ReturnType<typeof vi.fn>
).mockResolvedValueOnce(mockResponse);
const result = await fileUploader.upload(url, { file });
expect(result).toEqual(mockResponse);
expect(mockAxiosInstance.post).toHaveBeenCalledWith(
url,
expect.any(FormData),
{
headers: {
'Content-Type': 'multipart/form-data',
},
},
);
});
it('should merge provided config with default config', async () => {
const url = 'https://example.com/upload';
const file = new File(['file content'], 'test.txt', { type: 'text/plain' });
const mockResponse: AxiosResponse = {
config: {} as any,
data: { success: true },
headers: {},
status: 200,
statusText: 'OK',
};
(
mockAxiosInstance.post as unknown as ReturnType<typeof vi.fn>
).mockResolvedValueOnce(mockResponse);
const customConfig: AxiosRequestConfig = {
headers: { 'Custom-Header': 'value' },
};
const result = await fileUploader.upload(url, { file }, customConfig);
expect(result).toEqual(mockResponse);
expect(mockAxiosInstance.post).toHaveBeenCalledWith(
url,
expect.any(FormData),
{
headers: {
'Content-Type': 'multipart/form-data',
'Custom-Header': 'value',
},
},
);
});
it('should handle errors gracefully', async () => {
const url = 'https://example.com/upload';
const file = new File(['file content'], 'test.txt', { type: 'text/plain' });
(
mockAxiosInstance.post as unknown as ReturnType<typeof vi.fn>
).mockRejectedValueOnce(new Error('Network Error'));
await expect(fileUploader.upload(url, { file })).rejects.toThrow(
'Network Error',
);
});
it('should handle empty URL gracefully', async () => {
const url = '';
const file = new File(['file content'], 'test.txt', { type: 'text/plain' });
(
mockAxiosInstance.post as unknown as ReturnType<typeof vi.fn>
).mockRejectedValueOnce(new Error('Request failed with status code 404'));
await expect(fileUploader.upload(url, { file })).rejects.toThrow(
'Request failed with status code 404',
);
});
it('should handle null URL gracefully', async () => {
const url = null as unknown as string;
const file = new File(['file content'], 'test.txt', { type: 'text/plain' });
(
mockAxiosInstance.post as unknown as ReturnType<typeof vi.fn>
).mockRejectedValueOnce(new Error('Request failed with status code 404'));
await expect(fileUploader.upload(url, { file })).rejects.toThrow(
'Request failed with status code 404',
);
});
});