27 lines
554 B
JavaScript
27 lines
554 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['takeWhile'] = function () {
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var lazy = new Lazy;
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var data = [];
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var executed = false;
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lazy.takeWhile(function (x) { return x < 5 }).join(function (xs) {
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assert.deepEqual(xs, range(0,5));
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executed = true;
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});
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range(0,10).forEach(function (x) {
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lazy.emit('data', x);
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});
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assert.ok(executed, 'join didn\'t execute');
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}
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