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x/ramda/test/move.js

:ram: Practical functional Javascript
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var R = require('../source');var eq = require('./shared/eq');
var list = ['a', 'b', 'c', 'd', 'e', 'f'];
describe('move', function() { it('moves an element from an index to another', function() { eq(R.move(0, 1, list), ['b', 'a', 'c', 'd', 'e', 'f']); eq(R.move(2, 1, list), ['a', 'c', 'b', 'd', 'e', 'f']); eq(R.move(-1, 0, list), ['f', 'a', 'b', 'c', 'd', 'e']); eq(R.move(0, -1, list), ['b', 'c', 'd', 'e', 'f', 'a']); });
it('does nothing when indexes are outside the list outbounds', function() { eq(R.move(-20, 2, list), list); eq(R.move(20, 2, list), list); eq(R.move(2, 20, list), list); eq(R.move(2, -20, list), list); eq(R.move(20, 20, list), list); eq(R.move(-20, -20, list), list); });});