forked from aws/aws-sdk-js-v3
/
fsCreateReadStream.spec.ts
46 lines (39 loc) · 1.42 KB
/
fsCreateReadStream.spec.ts
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import * as fs from "fs";
import { fsCreateReadStream } from "./fsCreateReadStream";
jest.setTimeout(30000);
describe(fsCreateReadStream.name, () => {
const mockFileContents = fs.readFileSync(__filename, "utf8");
it("uses file descriptor if defined", (done) => {
fs.promises.open(__filename, "r").then((fd) => {
if ((fd as any).createReadStream) {
const readStream = (fd as any).createReadStream();
const readStreamCopy = fsCreateReadStream(readStream);
const chunks: Array<Buffer> = [];
readStreamCopy.on("data", (chunk) => {
chunks.push(chunk);
});
readStreamCopy.on("end", () => {
const outputFileContents = Buffer.concat(chunks).toString();
expect(outputFileContents).toEqual(mockFileContents);
done();
});
} else {
console.log(`Skipping createReadStream test as it's not available.`);
done();
}
});
});
it("uses start and end if file descriptor is not defined", (done) => {
const readStream = fs.createReadStream(__filename);
const readStreamCopy = fsCreateReadStream(readStream);
const chunks: Array<Buffer> = [];
readStreamCopy.on("data", (chunk) => {
chunks.push(chunk);
});
readStreamCopy.on("end", () => {
const outputFileContents = Buffer.concat(chunks).toString();
expect(outputFileContents).toEqual(mockFileContents);
done();
});
});
});