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import {jest, describe, it, expect, beforeEach, afterEach} from '@jest/globals';
class MockHttpClientError extends Error {
statusCode: number;
constructor(message: string, statusCode: number) {
super(message);
this.name = 'HttpClientError';
this.statusCode = statusCode;
}
}
// Mock @actions/http-client
jest.unstable_mockModule('@actions/http-client', () => ({
HttpClient: jest.fn().mockImplementation(() => ({
getJson: jest.fn()
})),
HttpClientError: MockHttpClientError,
HttpCodes: {
OK: 200,
NotFound: 404,
InternalServerError: 500
}
}));
// Mock @actions/cache (needed transitively by utils.ts)
jest.unstable_mockModule('@actions/cache', () => ({
saveCache: jest.fn(),
restoreCache: jest.fn(),
isFeatureAvailable: jest.fn()
}));
// Mock @actions/tool-cache
jest.unstable_mockModule('@actions/tool-cache', () => ({
getManifestFromRepo: jest.fn()
}));
// Mock @actions/core (needed by install-python.ts)
jest.unstable_mockModule('@actions/core', () => ({
info: jest.fn(),
warning: jest.fn(),
debug: jest.fn(),
error: jest.fn(),
notice: jest.fn(),
setFailed: jest.fn(),
setOutput: jest.fn(),
getInput: jest.fn(),
getBooleanInput: jest.fn(),
getMultilineInput: jest.fn(),
addPath: jest.fn(),
exportVariable: jest.fn(),
saveState: jest.fn(),
getState: jest.fn(),
setSecret: jest.fn(),
isDebug: jest.fn(() => false),
startGroup: jest.fn(),
endGroup: jest.fn(),
group: jest.fn((_name: string, fn: () => Promise<unknown>) => fn()),
toPlatformPath: jest.fn((p: string) => p),
toWin32Path: jest.fn((p: string) => p),
toPosixPath: jest.fn((p: string) => p)
}));
// Mock @actions/exec (needed by install-python.ts)
jest.unstable_mockModule('@actions/exec', () => ({
exec: jest.fn(),
getExecOutput: jest.fn()
}));
// Dynamic imports after mocking
const httpm = await import('@actions/http-client');
const tc = await import('@actions/tool-cache');
const {getManifest, getManifestFromRepo, getManifestFromURL} =
await import('../src/install-python.js');
const mockManifest = [
{
version: '1.0.0',
stable: true,
files: [
{
filename: 'tool-v1.0.0-linux-x64.tar.gz',
platform: 'linux',
arch: 'x64',
download_url: 'https://example.com/tool-v1.0.0-linux-x64.tar.gz'
}
]
}
];
describe('getManifest', () => {
beforeEach(() => {
jest.resetAllMocks();
});
afterEach(() => {
jest.useRealTimers();
});
it('should return manifest from repo', async () => {
(tc.getManifestFromRepo as jest.Mock<any>).mockResolvedValue(mockManifest);
const manifest = await getManifest();
expect(manifest).toEqual(mockManifest);
});
it('should return manifest from URL if repo fetch fails', async () => {
jest.useFakeTimers();
(tc.getManifestFromRepo as jest.Mock<any>).mockRejectedValue(
new Error('Fetch failed')
);
(httpm.HttpClient as jest.Mock<any>).mockImplementation(() => ({
getJson: jest.fn(async () => ({result: mockManifest}))
}));
const promise = getManifest();
await jest.runAllTimersAsync();
const manifest = await promise;
expect(manifest).toEqual(mockManifest);
});
it('should fall back to URL if repo returns a truncated/empty manifest', async () => {
jest.useFakeTimers();
(tc.getManifestFromRepo as jest.Mock<any>).mockResolvedValue([]);
(httpm.HttpClient as jest.Mock<any>).mockImplementation(() => ({
getJson: jest.fn(async () => ({result: mockManifest}))
}));
const promise = getManifest();
await jest.runAllTimersAsync();
const manifest = await promise;
expect(manifest).toEqual(mockManifest);
});
it('should retry on a transient invalid manifest and then succeed', async () => {
jest.useFakeTimers();
(tc.getManifestFromRepo as jest.Mock<any>)
.mockResolvedValueOnce([])
.mockResolvedValueOnce(mockManifest);
const promise = getManifest();
await jest.runAllTimersAsync();
const manifest = await promise;
expect(manifest).toEqual(mockManifest);
expect(tc.getManifestFromRepo as jest.Mock<any>).toHaveBeenCalledTimes(2);
});
it('should fail loudly when the manifest is truncated/empty on every source', async () => {
jest.useFakeTimers();
(tc.getManifestFromRepo as jest.Mock<any>).mockResolvedValue([]);
(httpm.HttpClient as jest.Mock<any>).mockImplementation(() => ({
getJson: jest.fn(async () => ({result: []}))
}));
const promise = getManifest();
// Prevent unhandled rejection before timers advance.
const catchPromise = promise.catch(() => {});
await jest.runAllTimersAsync();
await catchPromise;
await expect(promise).rejects.toThrow(
'Failed to fetch the Python versions manifest'
);
});
it('should not retry the API on a rate-limit error and fall back to URL immediately', async () => {
const rateLimitError = Object.assign(new Error('API rate limit exceeded'), {
httpStatusCode: 403
});
(tc.getManifestFromRepo as jest.Mock<any>).mockRejectedValue(
rateLimitError
);
(httpm.HttpClient as jest.Mock<any>).mockImplementation(() => ({
getJson: jest.fn(async () => ({result: mockManifest}))
}));
const manifest = await getManifest();
expect(manifest).toEqual(mockManifest);
expect(tc.getManifestFromRepo as jest.Mock<any>).toHaveBeenCalledTimes(1);
});
});
describe('getManifestFromRepo', () => {
beforeEach(() => {
jest.resetAllMocks();
});
it('should return manifest from repo', async () => {
(tc.getManifestFromRepo as jest.Mock<any>).mockResolvedValue(mockManifest);
const manifest = await getManifestFromRepo();
expect(manifest).toEqual(mockManifest);
});
});
describe('getManifestFromURL', () => {
beforeEach(() => {
jest.resetAllMocks();
});
it('should return manifest from URL', async () => {
(httpm.HttpClient as jest.Mock<any>).mockImplementation(() => ({
getJson: jest.fn(async () => ({result: mockManifest}))
}));
const manifest = await getManifestFromURL();
expect(manifest).toEqual(mockManifest);
});
it('should throw error if unable to get manifest from URL', async () => {
(httpm.HttpClient as jest.Mock<any>).mockImplementation(() => ({
getJson: jest.fn(async () => ({result: null}))
}));
await expect(getManifestFromURL()).rejects.toThrow(
'Unable to get manifest from'
);
});
});