mocha-streambuffer
v1.0.24
Published
A small utility to capture console output in mocha tests
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mocha-streambuffer
A small utility to assert console output in mocha tests
Usage
const StreamBuffer = require('mocha-streambuffer');
const assert = require('assert');
var stdout;
describe('StreamBuffer', function()
{
before(function()
{
stdout = new StreamBuffer(process.stdout, true).hook();
});
beforeEach(function()
{
stdout.clean();
});
after(function()
{
stdout.unhook();
});
describe('Catch', function()
{
it('should catch stdout', function()
{
console.log('ping');
assert.equal(stdout.buffer(), 'ping\n');
});
});
describe('Includes', function()
{
it('should include ping', function()
{
console.log('ping');
assert.ok(stdout.buffer().includes('ping'));
});
});
});
StreamBuffer(stream, [verbose=true])
stream: The stream to buffer
verbose: Whether to still write to the stream
StreamBuffer.hook() => this
Starts buffering
StreamBuffer.unhook() => this
Stops buffering
StreamBuffer.buffer() => String
Returns the buffer
StreamBuffer.clean() => String
Resets the buffer and returns it
Credits
jjm for this excellent post on stackoverflow.