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test.js
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test.js
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var pyramid = require('./index')
, assert = require('assert')
describe('pyramid', function () {
it('fails for invalid objects', function () {
assert.throws(function () {
pyramid({name: 'foo'}, {width: 100})
})
assert.throws(function () {
pyramid({height: 'foo'}, {width: 100})
})
assert.throws(function () {
pyramid({width: 'foo'}, {height: 100})
})
assert.throws(function () {
pyramid({width: 100, height: 100}, {width: 100})
})
})
it('stacks with largest at the base', function () {
var stacked = pyramid({id: 1, width: 100, height: 100},
{id: 2, width: 200, height: 100},
{id: 3, width: 100, height: 100})
assert.equal(stacked[0].id, 2)
})
it('stacks with smallest at the top', function () {
var stacked = pyramid({id: 1, width: 10, height: 10},
{id: 2, width: 200, height: 100},
{id: 3, width: 100, height: 100})
assert.equal(stacked[stacked.length - 1].id, 1)
})
it('stacks in order', function () {
var stacked = pyramid({id: 1, width: 10, height: 10},
{id: 2, width: 1000, height: 100},
{id: 3, width: 200, height: 100},
{id: 4, width: 100, height: 100})
assert.equal(stacked[0].id, 2)
assert.equal(stacked[1].id, 3)
assert.equal(stacked[2].id, 4)
assert.equal(stacked[3].id, 1)
})
})