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This commit adds a mustNotCall() helper for testing. This provides an alternative to using common.fail() as a callback, or creating a callback function for the sole purpose of calling common.fail(). PR-URL: https://github.com/nodejs/node/pull/11152 Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com> Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com> Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
43 lines
982 B
JavaScript
43 lines
982 B
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const fs = require('fs');
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const stream = fs.createReadStream(__filename, {
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bufferSize: 64
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});
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const err = new Error('BAM');
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stream.on('error', common.mustCall((err_) => {
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process.nextTick(common.mustCall(() => {
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assert.strictEqual(stream.fd, null);
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assert.strictEqual(err_, err);
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}));
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}));
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fs.close = common.mustCall((fd_, cb) => {
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assert.strictEqual(fd_, stream.fd);
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process.nextTick(cb);
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});
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const read = fs.read;
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fs.read = function() {
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// first time is ok.
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read.apply(fs, arguments);
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// then it breaks
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fs.read = common.mustCall(function() {
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const cb = arguments[arguments.length - 1];
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process.nextTick(() => {
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cb(err);
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});
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// and should not be called again!
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fs.read = () => {
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throw new Error('BOOM!');
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};
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});
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};
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stream.on('data', (buf) => {
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stream.on('data', common.mustNotCall("no more 'data' events should follow"));
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});
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