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Merge pull request #7020 from Sage/jest-fail-on-console-error
chore: resolve runtime errors thrown by jest tests
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,102 @@ | ||
import fs from "fs"; | ||
import fetch from "jest-fetch-mock"; | ||
import { generateMetadata, writeFile } from "./generate_metadata"; | ||
|
||
jest.mock("fs"); | ||
const mockedFs = jest.mocked(fs); | ||
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const mockNpmVersions = { | ||
versions: { | ||
"98.0.0": {}, | ||
"99.0.0": {}, | ||
"100.1.1": {}, | ||
"100.2.1": {}, | ||
"101.0.0": {}, | ||
"102.0.0": {}, | ||
}, | ||
}; | ||
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const mockMetadata = { | ||
versions: { | ||
"v102.0.0": "https://carbon.sage.com/v/102.0.0/index.html", | ||
"v101.0.0": "https://carbon.sage.com/v/101.0.0/index.html", | ||
"v100.2.1": "https://carbon.sage.com/v/100.2.1/index.html", | ||
}, | ||
}; | ||
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beforeEach(() => { | ||
jest.spyOn(global.console, "log").mockImplementation(() => {}); | ||
jest.spyOn(global.console, "error").mockImplementation(() => {}); | ||
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fetch.mockResponse(JSON.stringify(mockNpmVersions)); | ||
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mockedFs.mkdirSync = jest.fn((path, options, callback) => { | ||
callback(); | ||
}); | ||
mockedFs.writeFileSync = jest.fn((path, json, callback) => { | ||
callback(); | ||
}); | ||
}); | ||
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afterEach(() => { | ||
jest.resetAllMocks(); | ||
fetch.resetMocks(); | ||
}); | ||
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test("creates a metadata.json file in a metadata directory", async () => { | ||
await generateMetadata(); | ||
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expect(mockedFs.mkdirSync).toHaveBeenCalledWith( | ||
"metadata", | ||
{}, | ||
expect.any(Function) | ||
); | ||
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expect(mockedFs.writeFileSync).toHaveBeenCalledWith( | ||
"metadata/metadata.json", | ||
JSON.stringify(mockMetadata), | ||
expect.any(Function) | ||
); | ||
}); | ||
|
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test("throws an error, when unable to create the metadata directory", () => { | ||
mockedFs.mkdirSync = jest.fn((path, options, callback) => { | ||
callback(new Error("An error occurred.")); | ||
}); | ||
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expect(() => writeFile()).toThrow("An error occurred."); | ||
}); | ||
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test("throws an error, when unable to create the metadata.json file", () => { | ||
mockedFs.writeFileSync = jest.fn((path, json, callback) => { | ||
callback(new Error("An error occurred.")); | ||
}); | ||
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expect(() => writeFile()).toThrow("An error occurred."); | ||
}); | ||
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describe("when unable to fetch carbon data from npm", () => { | ||
it("logs error with http status code", async () => { | ||
fetch.mockResponse(JSON.stringify(mockNpmVersions), { | ||
status: 500, | ||
ok: false, | ||
}); | ||
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await generateMetadata(); | ||
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expect(global.console.error).toHaveBeenCalledWith( | ||
new Error("Failed to fetch from npm with HTTP error code 500") | ||
); | ||
}); | ||
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it("does not attempt to write metadata.json file", async () => { | ||
fetch.mockResponse(JSON.stringify(mockNpmVersions), { | ||
status: 500, | ||
ok: false, | ||
}); | ||
|
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await generateMetadata(); | ||
|
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expect(mockedFs.writeFileSync).not.toHaveBeenCalled(); | ||
}); | ||
}); |
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