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require 'test_helper'
class AttributeTest < Test::Unit::TestCase
include Term::ANSIColor
def test_cast
color = Attribute.get(:color123)
on_color = Attribute.get(:on_color123)
assert_equal color, Attribute[color]
assert_equal color, Attribute[:color123]
assert_equal color, Attribute[123]
assert_equal color, Attribute['123']
assert_equal color, Attribute['#87ffff']
assert_equal color, Attribute[ [ 0x87, 0xff, 0xff ] ]
assert_equal on_color, Attribute['on_123']
assert_equal on_color, Attribute['on_#87ffff']
end
def test_gray
a1 = Attribute[ [ 0, 0, 0 ] ]
assert_equal false, a1.gray?
a2 = Attribute[ [ 255, 255, 255 ] ]
assert_equal false, a2.gray?
a3 = Attribute[ [ 00, 0x7f, 0xff ] ]
assert_equal false, a3.gray?
a4 = Attribute[ [ 0x7f, 0x7f, 0x7f ] ]
assert_equal true, a4.gray?
end
def test_distance_to
color = Attribute.nearest_rgb_color('#0f0')
assert_in_delta 250.954, Attribute.get(:color0).distance_to(color), 1e-3
color = Attribute.nearest_rgb_color('#0f0')
assert_in_delta 255, Attribute.get(:color0).distance_to(color,
:metric => RGBColorMetrics::Euclidean), 1e-3
assert_equal 1 / 0.0, Attribute.get(:color0).distance_to(nil)
end
def test_nearest_rgb_color
assert_equal Attribute.get(:color0).rgb, Attribute.nearest_rgb_color('#000').rgb
assert_equal Attribute.get(:color15).rgb, Attribute.nearest_rgb_color('#ffffff').rgb
assert_equal :color247, Attribute.nearest_rgb_color('#aaa').name
assert_equal :color109, Attribute.nearest_rgb_color('#aaa', :gray => false).name
end
def test_nearest_rgb_on_color
assert_equal Attribute.get(:on_color0).rgb, Attribute.nearest_rgb_on_color('#000').rgb
assert_equal Attribute.get(:on_color15).rgb, Attribute.nearest_rgb_on_color('#ffffff').rgb
assert_equal :on_color247, Attribute.nearest_rgb_on_color('#aaa').name
assert_equal :on_color109, Attribute.nearest_rgb_on_color('#aaa', :gray => false).name
end
def test_apply
assert_equal "\e[5m", Attribute[:blink].apply
assert_equal "\e[5mfoo\e[0m", Attribute[:blink].apply('foo')
assert_equal "\e[5mfoo\e[0m", Attribute[:blink].apply { 'foo' }
end
def test_gradient
g0 = Attribute[:blink].gradient_to Attribute['#30ffaa']
assert_equal [], g0
g1 = Attribute['#30ffaa'].gradient_to(Attribute['#ff507f'], :steps => 9)
assert_equal [ :color49, :color49, :color43, :color79, :color108,
:color247, :color138, :color168, :color204 ], g1.map(&:name)
g2 = Attribute['#30ffaa'].gradient_to(
Attribute['#ff507f'],
:steps => 9,
:metric => RGBColorMetrics::Euclidean
)
assert_equal [ :color49, :color43, :color79, :color73, :color108,
:color247, :color138, :color168, :color204 ], g2.map(&:name)
end
end
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