Mocks node.js http.ServerResponse (a response). See also mock-req
.
Being a readable/writable stream, you can pipe the response body to and from it.
See test.js
for further usage.
var MockRes = require('mock-res');
// Basic usage
var res = new MockRes();
// With callback for 'finish' event
var res = new MockRes(function() {
console.log('Response finished');
});
// Or listen for stream events
res.on('error', function(err) {
console.error('Error: %s', err.stack);
// If not listened for, the 'error' event will throw,
// as is true for any stream.
});
res.on('finish', function() {
console.log('Finished');
});
// Read status code
res.statusCode; // 200 by default
// Read body as string
res._getString(); // 'I am a chicken';
// Read body as parsed JSON
res._getJSON(); // { chicken: true }
// Pipe body somewhere
res.pipe(fs.createWriteStream('/tmp/yo'));
var assert = require('assert');
var list = require('./list-handler');
var MockRes = require('mock-res');
function test(done) {
/* Arrange */
// Use `mock-req` for a better mock
var req = {
method: 'GET',
url: '/foos'
}
var res = new MockRes(finish);
/* Act */
list(req, res);
/* Assert */
function finish() {
// NOTE `this` === `res`
assert.equal(this.statusCode, 200);
assert.equal(this._getString(), '[{"id":0},{"id":1}]');
assert.deepEqual(this._getJSON(), [{id: 0 }, {id: 1 }]);
res.pipe(process.stdout); // `res` is just a readable stream here
done(); // this is an async test
}
}
- All readable/writable stream methods.
_getString()
Reads the body as a string, from the internal stream buffer._getJSON()
Reads the body as a parsed JSON object, from the internal stream buffer.