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wrapper: write stdout/stderr data to stream when received

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This commit is contained in:
Austin Valle 2024-04-25 10:23:13 -04:00
parent 1f0219f06b
commit 003aea7b7b
4 changed files with 38 additions and 17 deletions
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21
wrapper/test/output-listener.test.js
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@ -6,12 +6,31 @@
const OutputListener = require('../lib/output-listener');
describe('output-listener', () => {
it('receives and exposes data', () => {
it('receives and buffers data to .contents', () => {
const listener = new OutputListener();
const listen = listener.listener;
listen(Buffer.from('foo'));
listen(Buffer.from('bar'));
listen(Buffer.from('baz'));
expect(listener.contents).toEqual('foobarbaz');
});
it('receives and writes data to stream immediately', () => {
const mockWrite = jest.fn();
const listener = new OutputListener({ write: mockWrite });
const listen = listener.listener;
listen(Buffer.from('first write'));
expect(mockWrite.mock.lastCall[0]).toStrictEqual(Buffer.from('first write'));
listen(Buffer.from('second write'));
expect(mockWrite.mock.lastCall[0]).toStrictEqual(Buffer.from('second write'));
listen(Buffer.from('third write'));
expect(mockWrite.mock.lastCall[0]).toStrictEqual(Buffer.from('third write'));
expect(mockWrite).toBeCalledTimes(3);
});
});