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Add readable, writable and duplex

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This commit is contained in:
Angelos Chalaris
2018-10-03 22:16:10 +03:00
parent bff38c6387
commit 21622234d6
16 changed files with 161 additions and 3 deletions
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9
test/isStream/isStream.test.js
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@ -1,13 +1,20 @@
const expect = require('expect');
const isStream = require('./isStream.js');
const fs = require('fs');
const Stream = require('stream');
test('isStream is a Function', () => {
expect(isStream).toBeInstanceOf(Function);
});
test('isStream returns true for streams', () => {
test('isStream returns true for read streams', () => {
expect(isStream(fs.createReadStream('isStream.js'))).toBeTruthy();
});
test('isStream returns true for write streams', () => {
expect(isStream(fs.createWriteStream('isStream.js'))).toBeTruthy();
});
test('isStream returns true for duplex streams', () => {
expect(isStream(new Stream.Duplex())).toBeTruthy();
});
test('isStream returns false for non-streams', () => {
expect(isStream({})).toBeFalsy();
});