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x/ramda/test/takeWhile.js

:ram: Practical functional Javascript
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var assert = require('assert');
var R = require('../source');var eq = require('./shared/eq');

describe('takeWhile', function() { it('continues taking elements while the function reports `true`', function() { eq(R.takeWhile(function(x) {return x !== 5;}, [1, 3, 5, 7, 9]), [1, 3]); });
it('starts at the right arg and acknowledges undefined', function() { eq(R.takeWhile(function() { assert(false); }, []), []); eq(R.takeWhile(function(x) {return x !== void 0;}, [1, 3, void 0, 5, 7]), [1, 3]); });
it('can operate on strings', function() { eq(R.takeWhile(function(x) { return x !== 'd'; }, 'Ramda'), 'Ram'); });
});