chainy/node_modules/lazy/test/take.js

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2020-01-26 19:03:32 +00:00
var assert = require('assert');
var Lazy = require('..');
var expresso = expresso;
function range(i, j) {
var r = [];
for (;i<j;i++) r.push(i);
return r;
}
exports['take'] = function () {
var lazy = new Lazy;
var data = [];
var executed = 0;
lazy.take(6).join(function (xs) {
assert.deepEqual(xs, range(0,6));
executed++;
});
range(0,10).forEach(function (x) {
lazy.emit('data', x);
});
assert.equal(executed, 1, 'join executed incorrectly');
}