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add simpleProxyFetcher and add fetcher unit tests

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mrjvs
2023-09-10 19:09:23 +02:00
parent a31e05adfb
commit aa24946d6f
5 changed files with 286 additions and 3 deletions
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125
src/__test__/fetchers/simpleProxy.test.ts Normal file
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import { makeSimpleProxyFetcher } from "@/fetchers/simpleProxy";
import { DefaultedFetcherOptions, FetcherOptions } from "@/fetchers/types";
import { Headers } from "node-fetch";
import { afterEach, describe, expect, it, vi } from "vitest";
describe("makeSimpleProxyFetcher()", () => {
const fetch = vi.fn();
const fetcher = makeSimpleProxyFetcher("https://example.com/proxy", fetch);
afterEach(() => {
vi.clearAllMocks();
});
function setResult(type: "text" | "json", value: any) {
if (type === 'text') return fetch.mockResolvedValueOnce({
headers: new Headers({
"content-type": "text/plain",
}),
text() {
return Promise.resolve(value);
},
});
if (type === 'json') return fetch.mockResolvedValueOnce({
headers: new Headers({
"content-type": "application/json",
}),
json() {
return Promise.resolve(value);
},
});
}
function expectFetchCall(ops: { inputUrl: string, input: DefaultedFetcherOptions, outputUrl?: string, output: any, outputBody: any }) {
expect(fetcher(ops.inputUrl, ops.input)).resolves.toEqual(ops.outputBody);
expect(fetch).toBeCalledWith(ops.outputUrl ?? ops.inputUrl, ops.output);
vi.clearAllMocks();
}
it('should pass options through', () => {
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com",
input: {
method: "GET",
query: {},
headers: {
"X-Hello": "world",
},
},
outputUrl: `https://example.com/proxy?destination=${encodeURIComponent('https://google.com/')}`,
output: {
method: "GET",
headers: {
"X-Hello": "world",
},
},
outputBody: "hello world"
})
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com",
input: {
method: "GET",
headers: {},
query: {
"a": 'b',
}
},
outputUrl: `https://example.com/proxy?destination=${encodeURIComponent('https://google.com/?a=b')}`,
output: {
method: "GET",
headers: {},
},
outputBody: "hello world"
})
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com",
input: {
method: "GET",
query: {},
headers: {},
},
outputUrl: `https://example.com/proxy?destination=${encodeURIComponent('https://google.com/')}`,
output: {
method: "GET",
headers: {},
},
outputBody: "hello world"
})
});
it('should parse response correctly', () => {
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com/",
input: {
method: "POST",
query: {},
headers: {},
},
outputUrl: `https://example.com/proxy?destination=${encodeURIComponent('https://google.com/')}`,
output: {
method: "POST",
headers: {},
},
outputBody: "hello world"
})
setResult("json", { hello: 42 });
expectFetchCall({
inputUrl: "https://google.com/",
input: {
method: "POST",
query: {},
headers: {},
},
outputUrl: `https://example.com/proxy?destination=${encodeURIComponent('https://google.com/')}`,
output: {
method: "POST",
headers: {},
},
outputBody: { hello: 42 }
})
});
});

125
src/__test__/fetchers/standard.test.ts Normal file
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import { makeStandardFetcher } from "@/fetchers/standardFetch";
import { DefaultedFetcherOptions } from "@/fetchers/types";
import { Headers } from "node-fetch";
import { afterEach, describe, expect, it, vi } from "vitest";
describe("makeStandardFetcher()", () => {
const fetch = vi.fn();
const fetcher = makeStandardFetcher(fetch);
afterEach(() => {
vi.clearAllMocks();
});
function setResult(type: "text" | "json", value: any) {
if (type === 'text') return fetch.mockResolvedValueOnce({
headers: new Headers({
"content-type": "text/plain",
}),
text() {
return Promise.resolve(value);
},
});
if (type === 'json') return fetch.mockResolvedValueOnce({
headers: new Headers({
"content-type": "application/json",
}),
json() {
return Promise.resolve(value);
},
});
}
function expectFetchCall(ops: { inputUrl: string, input: DefaultedFetcherOptions, outputUrl?: string, output: any, outputBody: any }) {
expect(fetcher(ops.inputUrl, ops.input)).resolves.toEqual(ops.outputBody);
expect(fetch).toBeCalledWith(ops.outputUrl ?? ops.inputUrl, ops.output);
vi.clearAllMocks();
}
it('should pass options through', () => {
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com",
input: {
method: "GET",
query: {},
headers: {
"X-Hello": "world",
},
},
outputUrl: "https://google.com/",
output: {
method: "GET",
headers: {
"X-Hello": "world",
},
},
outputBody: "hello world"
})
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com",
input: {
method: "GET",
headers: {},
query: {
"a": 'b',
}
},
outputUrl: "https://google.com/?a=b",
output: {
method: "GET",
headers: {},
},
outputBody: "hello world"
})
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com",
input: {
query: {},
headers: {},
method: "GET"
},
outputUrl: "https://google.com/",
output: {
method: "GET",
headers: {},
},
outputBody: "hello world"
})
});
it('should parse response correctly', () => {
setResult("text", "hello world");
expectFetchCall({
inputUrl: "https://google.com/",
input: {
query: {},
headers: {},
method: "POST"
},
outputUrl: "https://google.com/",
output: {
method: "POST",
headers: {},
},
outputBody: "hello world"
})
setResult("json", { hello: 42 });
expectFetchCall({
inputUrl: "https://google.com/",
input: {
query: {},
headers: {},
method: "POST"
},
outputUrl: "https://google.com/",
output: {
method: "POST",
headers: {},
},
outputBody: { hello: 42 }
})
});
});