51 lines
1.8 KiB
CoffeeScript
51 lines
1.8 KiB
CoffeeScript
require 'es6-shim'
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vows = require 'vows'
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assert = require 'assert'
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chroma = require '../chroma'
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vows
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.describe('Some tests for chroma.limits()')
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.addBatch
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'simple continuous domain':
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topic: chroma.limits [1,2,3,4,5], 'continuous'
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'domain': (topic) -> assert.deepEqual topic, [1,5]
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'continuous domain, negative values':
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topic: chroma.limits [1,-2, -3,4,5], 'continuous'
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'domain': (topic) -> assert.deepEqual topic, [-3,5]
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'continuous domain, null values':
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topic: chroma.limits [1, undefined, null, 4, 5], 'continuous'
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'domain': (topic) -> assert.deepEqual topic, [1,5]
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'equidistant domain':
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topic: chroma.limits [0,10], 'equidistant', 5
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'domain': (topic) -> assert.deepEqual topic, [0, 2, 4, 6, 8, 10]
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'equidistant domain, NaN values':
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topic: chroma.limits [0,9,3,6,3,5,undefined,Number.NaN,10], 'equidistant', 5
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'domain': (topic) -> assert.deepEqual topic, [0, 2, 4, 6, 8, 10]
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'logarithmic domain':
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topic: chroma.limits [1,10000], 'log', 4
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'domain': (topic) -> assert.deepEqual topic, [1, 10, 100, 1000, 10000]
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'logarithmic domain - non-positive values':
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topic: [-1,10000]
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'domain': (topic) ->
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assert.throws () ->
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chroma.limits topic, 'log', 4
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, 'Logarithmic scales should only be possible for values > 0'
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'quantiles domain':
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topic: chroma.limits [1,2,3,4,5,10,20,100], 'quantiles', 2
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'domain': (topic) -> assert.deepEqual topic, [1, 4.5, 100]
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'quantiles not enough values':
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topic: chroma.limits [0,1], 'quantiles', 5
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'domain': (topic) -> assert.deepEqual topic, [0,0.2,0.4,0.6,0.8,1]
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.export(module)
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