27 lines
519 B
JavaScript
27 lines
519 B
JavaScript
var assert = require('assert');
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var Lazy = require('..');
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var expresso = expresso;
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function range(i, j) {
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var r = [];
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for (;i<j;i++) r.push(i);
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return r;
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}
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exports['product'] = function () {
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var lazy = new Lazy;
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var executed = 0;
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lazy.product(function (y) {
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executed++;
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assert.equal(y, 1*2*3*4*5*6*7*8*9);
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})
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range(1,10).forEach(function (x) {
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lazy.emit('data', x);
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});
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lazy.emit('end');
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assert.equal(executed, 1, 'product failed to execute');
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}
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