random-bunny/tests/index.test.ts

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2023-09-13 11:09:38 +01:00
import { ErrorCode } from "../src/constants/ErrorCode";
import ErrorMessages from "../src/constants/ErrorMessages";
import randomBunny from "../src/index";
import fetch from "got-cjs";
jest.mock('got-cjs');
const fetchMock = jest.mocked(fetch);
describe('randomBunny', () => {
test('GIVEN subreddit AND sortBy is supplied, EXPECT successful result', async() => {
fetchMock.mockResolvedValue({
body: JSON.stringify({
data: {
children: [
{
data: {
archived: false,
downs: 0,
hidden: false,
permalink: '/r/Rabbits/comments/12pa5te/someone_told_pickles_its_monday_internal_fury/',
subreddit: 'Rabbits',
subreddit_subscribers: 298713,
title: 'Someone told pickles its Monday… *internal fury*',
ups: 1208,
url: 'https://i.redd.it/cr8xudsnkgua1.jpg',
},
},
],
}
}),
});
const result = await randomBunny('rabbits', 'new');
expect(result.IsSuccess).toBeTruthy();
expect(result.Result).toBeDefined();
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expect(result.Error).toBeUndefined();
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/new.json');
});
test('GIVEN sortBy is NOT supplied, expect it to default to hot', async () => {
fetchMock.mockResolvedValue({
body: JSON.stringify({
data: {
children: [
{
data: {
archived: false,
downs: 0,
hidden: false,
permalink: '/r/Rabbits/comments/12pa5te/someone_told_pickles_its_monday_internal_fury/',
subreddit: 'Rabbits',
subreddit_subscribers: 298713,
title: 'Someone told pickles its Monday… *internal fury*',
ups: 1208,
url: 'https://i.redd.it/cr8xudsnkgua1.jpg',
},
},
],
}
}),
});
const result = await randomBunny('rabbits');
expect(result.IsSuccess).toBeTruthy();
expect(result.Result).toBeDefined();
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expect(result.Error).toBeUndefined();
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/hot.json');
});
test('GIVEN sortBy is NOT valid, expect it to default to hot', async () => {
fetchMock.mockResolvedValue({
body: JSON.stringify({
data: {
children: [
{
data: {
archived: false,
downs: 0,
hidden: false,
permalink: '/r/Rabbits/comments/12pa5te/someone_told_pickles_its_monday_internal_fury/',
subreddit: 'Rabbits',
subreddit_subscribers: 298713,
title: 'Someone told pickles its Monday… *internal fury*',
ups: 1208,
url: 'https://i.redd.it/cr8xudsnkgua1.jpg',
},
},
],
}
}),
});
const result = await randomBunny('rabbits', 'invalid');
expect(result.IsSuccess).toBeTruthy();
expect(result.Result).toBeDefined();
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expect(result.Error).toBeUndefined();
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/hot.json');
});
test('GIVEN the fetch fails, EXPECT failure result', async () => {
fetchMock.mockResolvedValue(null);
const result = await randomBunny('rabbits', 'new');
expect(result.IsSuccess).toBeFalsy();
expect(result.Result).toBeUndefined();
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expect(result.Error).toBeDefined();
expect(result.Error!.Code).toBe(ErrorCode.FailedToFetchReddit);
expect(result.Error!.Message).toBe(ErrorMessages.FailedToFetchReddit);
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/new.json');
});
test('GIVEN the result is NOT valid JSON, EXPECT failure result', async () => {
fetchMock.mockResolvedValue({
body: JSON.stringify(null),
});
const result = await randomBunny('rabbits', 'new');
expect(result.IsSuccess).toBeFalsy();
expect(result.Result).toBeUndefined();
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expect(result.Error).toBeDefined();
expect(result.Error!.Code).toBe(ErrorCode.UnableToParseJSON);
expect(result.Error!.Message).toBe(ErrorMessages.UnableToParseJSON);
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/new.json');
});
test('GIVEN randomSelect does NOT find a response, EXPECT failure result', async () => {
fetchMock.mockResolvedValue({
body: JSON.stringify({
data: {
children: [],
}
}),
});
const result = await randomBunny('rabbits', 'new');
expect(result.IsSuccess).toBeFalsy();
expect(result.Result).toBeUndefined();
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expect(result.Error).toBeDefined();
expect(result.Error!.Code).toBe(ErrorCode.NoImageResultsFound);
expect(result.Error!.Message).toBe(ErrorMessages.NoImageResultsFound);
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/new.json');
});
test('GIVEN randomSelect does NOT find a valid response, EXPECT failure result', async () => {
fetchMock.mockResolvedValue({
body: JSON.stringify({
data: {
children: [
{
data: {
archived: false,
downs: 0,
hidden: false,
permalink: '/r/Rabbits/comments/12pa5te/someone_told_pickles_its_monday_internal_fury/',
subreddit: 'Rabbits',
subreddit_subscribers: 298713,
title: 'Someone told pickles its Monday… *internal fury*',
ups: 1208,
url: 'https://i.redd.it/cr8xudsnkgua1.webp',
},
},
],
}
}),
});
const result = await randomBunny('rabbits', 'new');
expect(result.IsSuccess).toBeFalsy();
expect(result.Result).toBeUndefined();
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expect(result.Error).toBeDefined();
expect(result.Error!.Code).toBe(ErrorCode.NoImageResultsFound);
expect(result.Error!.Message).toBe(ErrorMessages.NoImageResultsFound);
expect(fetchMock).toBeCalledWith('https://reddit.com/r/rabbits/new.json');
});
});