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require 'es6-shim'
vows = require 'vows'
assert = require 'assert'
chroma = require '../chroma'
vows
.describe('Some tests for chroma.limits()')
.addBatch
'simple continuous domain':
topic: -> chroma.limits [1,2,3,4,5], 'continuous'
'domain': (topic) -> assert.deepEqual topic, [1,5]
'continuous domain, negative values':
topic: -> chroma.limits [1,-2, -3,4,5], 'continuous'
'domain': (topic) -> assert.deepEqual topic, [-3,5]
'continuous domain, null values':
topic: -> chroma.limits [1, undefined, null, 4, 5], 'continuous'
'domain': (topic) -> assert.deepEqual topic, [1,5]
'equidistant domain':
topic: -> chroma.limits [0,10], 'equidistant', 5
'domain': (topic) -> assert.deepEqual topic, [0, 2, 4, 6, 8, 10]
'equidistant domain, NaN values':
topic: -> chroma.limits [0,9,3,6,3,5,undefined,Number.NaN,10], 'equidistant', 5
'domain': (topic) -> assert.deepEqual topic, [0, 2, 4, 6, 8, 10]
'logarithmic domain':
topic: -> chroma.limits [1,10000], 'log', 4
'domain': (topic) -> assert.deepEqual topic, [1, 10, 100, 1000, 10000]
'logarithmic domain - non-positive values':
topic: -> [-1,10000]
'domain': (topic) ->
assert.throws () ->
chroma.limits topic, 'log', 4
, 'Logarithmic scales are only possible for values > 0'
'quantiles domain':
topic: -> chroma.limits [1,2,3,4,5,10,20,100], 'quantiles', 2
'domain': (topic) -> assert.deepEqual topic, [1, 5, 100]
.export(module)
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