174 lines
8.5 KiB
CoffeeScript
174 lines
8.5 KiB
CoffeeScript
require 'es6-shim'
|
|
vows = require 'vows'
|
|
assert = require 'assert'
|
|
chroma = require '../chroma'
|
|
|
|
|
|
vows
|
|
.describe('Some tests for chroma.scale()')
|
|
|
|
.addBatch
|
|
|
|
'simple rgb scale (white-->black)':
|
|
topic:
|
|
f: chroma.scale ['white','black']
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#ffffff'
|
|
'mid gray': (topic) -> assert.equal topic.f(0.5).hex(), '#808080'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#000000'
|
|
|
|
'simple hsv scale (white-->black)':
|
|
topic:
|
|
f: chroma.scale(['white','black']).mode('hsv')
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#ffffff'
|
|
'mid gray': (topic) -> assert.equal topic.f(0.5).hex(), '#808080'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#000000'
|
|
'colors': (topic) -> assert.deepEqual topic.f.colors(), ['#ffffff', '#000000']
|
|
'colors start and end': (topic) -> assert.deepEqual topic.f.colors(2), ['#ffffff', '#000000']
|
|
'color mode': (topic) -> assert.deepEqual topic.f.colors(2, 'rgb')[1], [0,0,0]
|
|
'color mode null len': (topic) -> assert.equal topic.f.colors(2, null).length, 2
|
|
'color mode null': (topic) -> assert topic.f.colors(2, null)[0]._rgb
|
|
|
|
'simple hsv scale (white-->black), classified':
|
|
topic:
|
|
f: chroma.scale(['white','black']).classes(7).mode('hsv')
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#ffffff'
|
|
'mid gray': (topic) -> assert.equal topic.f(0.5).hex(), '#808080'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#000000'
|
|
'colors': (topic) -> assert.deepEqual topic.f.colors(7), ['#ffffff', '#d5d5d5', '#aaaaaa', '#808080', '#555555', '#2a2a2a', '#000000']
|
|
|
|
'simple lab scale (white-->black)':
|
|
topic:
|
|
f: chroma.scale(['white','black']).mode('lab')
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#ffffff'
|
|
'mid gray': (topic) -> assert.equal topic.f(0.5).hex(), '#777777'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#000000'
|
|
|
|
'colorbrewer scale':
|
|
topic:
|
|
f: chroma.scale 'RdYlGn'
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#a50026'
|
|
'mid gray': (topic) -> assert.equal topic.f(0.5).hex(), '#ffffbf'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#006837'
|
|
|
|
'colorbrewer scale - domained':
|
|
topic:
|
|
f: chroma.scale('RdYlGn').domain([0, 100])
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#a50026'
|
|
'foo': (topic) -> assert.notEqual topic.f(10).hex(), '#ffffbf'
|
|
'mid gray': (topic) -> assert.equal topic.f(50).hex(), '#ffffbf'
|
|
'ends black': (topic) -> assert.equal topic.f(100).hex(), '#006837'
|
|
|
|
'colorbrewer scale - lowercase':
|
|
topic:
|
|
f: chroma.scale 'rdylgn'
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#a50026'
|
|
'mid gray': (topic) -> assert.equal topic.f(0.5).hex(), '#ffffbf'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#006837'
|
|
|
|
'colorbrewer scale - domained - classified':
|
|
topic:
|
|
f: chroma.scale('RdYlGn').domain([0, 100]).classes(5)
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#a50026'
|
|
'10': (topic) -> assert.equal topic.f(10).hex(), '#a50026'
|
|
'mid gray': (topic) -> assert.equal topic.f(50).hex(), '#ffffbf'
|
|
'ends black': (topic) -> assert.equal topic.f(100).hex(), '#006837'
|
|
'get colors': (topic) -> assert.deepEqual topic.f.colors(5), ['#a50026', '#f98e52', '#ffffbf', '#86cb67', '#006837']
|
|
|
|
'calling domain with no arguments':
|
|
topic:
|
|
f: chroma.scale('RdYlGn').domain([0, 100]).classes(5)
|
|
'returns domain': (topic) -> assert.deepEqual topic.f.domain(), [0, 100]
|
|
'returns classes': (topic) -> assert.deepEqual topic.f.classes(), [0, 20, 40, 60, 80, 100]
|
|
|
|
'source array keeps untouched':
|
|
topic: chroma.brewer.Blues.slice(0)
|
|
'colors are an array': (colors) ->
|
|
assert.equal colors.length, 9
|
|
'colors are strings': (colors) ->
|
|
assert.equal typeof colors[0], 'string'
|
|
'creating a color scale': (colors) ->
|
|
chroma.scale(colors)
|
|
assert true
|
|
'colors are still strings': (colors) ->
|
|
assert.equal typeof colors[0], 'string'
|
|
|
|
|
|
'domain with same min and max':
|
|
topic:
|
|
f: chroma.scale(['white','black']).domain([1, 1])
|
|
'returns color': (topic) -> assert.deepEqual topic.f(1).hex(), '#000000'
|
|
|
|
'simple num scale (white-->black)':
|
|
topic:
|
|
f: chroma.scale(['white','black']).mode('num')
|
|
'starts white': (topic) -> assert.equal topic.f(0).hex(), '#ffffff'
|
|
'25%': (topic) -> assert.equal topic.f(0.25).hex(), '#bfffff'
|
|
'50%': (topic) -> assert.equal topic.f(0.5).hex(), '#7fffff'
|
|
'75%': (topic) -> assert.equal topic.f(0.75).hex(), '#3fffff'
|
|
'95%': (topic) -> assert.equal topic.f(0.95).hex(), '#0ccccc'
|
|
'ends black': (topic) -> assert.equal topic.f(1).hex(), '#000000'
|
|
|
|
'css rgb colors':
|
|
topic: chroma.scale("YlGnBu")(0.3).css()
|
|
'have rounded rgb() values': (topic) -> assert.equal topic, 'rgb(170,222,183)'
|
|
|
|
'css rgba colors':
|
|
topic: chroma.scale("YlGnBu")(0.3).alpha(0.675).css()
|
|
'dont round alpha value': (topic) -> assert.equal topic, 'rgba(170,222,183,0.675)'
|
|
|
|
'get colors from a scale':
|
|
topic:
|
|
f: chroma.scale(['yellow','darkgreen'])
|
|
'just colors': (topic) -> assert.deepEqual topic.f.colors(), ['#ffff00', '#006400']
|
|
'five hex colors': (topic) -> assert.deepEqual topic.f.colors(5), ['#ffff00','#bfd800','#80b200','#408b00','#006400']
|
|
'three css colors': (topic) -> assert.deepEqual topic.f.colors(3,'css'), ['rgb(255,255,0)', 'rgb(128,178,0)', 'rgb(0,100,0)' ]
|
|
|
|
'get colors from a scale with more than two colors':
|
|
topic:
|
|
f: chroma.scale(['yellow','orange', 'darkgreen'])
|
|
'just origianl colors': (topic) -> assert.deepEqual topic.f.colors(), ['#ffff00', '#ffa500', '#006400']
|
|
|
|
'test example in readme':
|
|
topic:
|
|
f: chroma.scale('RdYlGn')
|
|
'five hex colors (new)': (topic) -> assert.deepEqual topic.f.colors(5), ['#a50026','#f98e52','#ffffbf','#86cb67','#006837']
|
|
|
|
'weird result':
|
|
topic:
|
|
f: chroma.scale([[ 0, 0, 0, 1 ], [ 255, 255, 255, 1 ]]).domain([0,10]).mode('rgb')
|
|
'has hex function at 0.5': (topic) -> assert.equal typeof topic.f(0.5).hex, 'function'
|
|
'has hex function at 0': (topic) -> assert.equal typeof topic.f(0).hex, 'function'
|
|
|
|
'scale padding, simple':
|
|
topic:
|
|
f: chroma.scale('RdYlBu').padding(0.15)
|
|
'0': (topic) -> assert.equal topic.f(0).hex(), '#e64f35'
|
|
'0.5': (topic) -> assert.equal topic.f(0.5).hex(), '#ffffbf'
|
|
'1': (topic) -> assert.equal topic.f(1).hex(), '#5d91c3'
|
|
|
|
'scale padding, one-sided':
|
|
topic:
|
|
f: chroma.scale('OrRd').padding([0.2, 0])
|
|
'0': (topic) -> assert.equal topic.f(0).hex(), '#fddcaf'
|
|
'0.5': (topic) -> assert.equal topic.f(0.5).hex(), '#f26d4b'
|
|
'1': (topic) -> assert.equal topic.f(1).hex(), '#7f0000'
|
|
|
|
'colors return original colors':
|
|
topic:
|
|
f: chroma.scale(['red', 'white', 'blue'])
|
|
'same colors': (topic) -> assert.deepEqual topic.f.colors(), ['#ff0000', '#ffffff', '#0000ff']
|
|
|
|
'scale with one color':
|
|
topic:
|
|
f: chroma.scale(['red'])
|
|
'should return that color': (topic) -> assert.equal topic.f(0.3).hex(), '#ff0000'
|
|
|
|
'scale() no data color':
|
|
topic:
|
|
f: chroma.scale('OrRd')
|
|
'null --> nodata': (topic) -> assert.equal topic.f(null).hex(), '#cccccc'
|
|
'undefined --> nodata': (topic) -> assert.equal topic.f(undefined).hex(), '#cccccc'
|
|
'custom nodata color': (topic) -> assert.equal topic.f.nodata('#eee')(undefined).hex(), '#eeeeee'
|
|
|
|
.export(module)
|