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101 lines
3.4 KiB
Plaintext
101 lines
3.4 KiB
Plaintext
@import <AppKit/CGGradient.j>
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@implementation CGGradientTest : OJTestCase
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/*
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Using default values for location and count.
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*/
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- (void)testCreateWithColorComponentsDefault
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{
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// Test one color and no location
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var components = [ 0.2,0.2,0.4,0.4 ];
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var tmp = CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(),
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components);
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[self assert:1 equals:tmp.colors.length];
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[self assert:1 equals:tmp.locations.length];
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// TODO: This should not be supported since there is no gradient if only one color
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// TODO: NaN not really helpful...
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[self assert:NaN equals:tmp.locations[0]];
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[self assert:components.slice(0,4) equals:tmp.colors[0].components];
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// Test two colors and no location
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var components = [ 0.2,0.2,0.4,0.4,
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0.6,0.6,0.8,0.8 ];
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var tmp = CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(),
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components);
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[self assert:2 equals:tmp.colors.length];
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[self assert:2 equals:tmp.locations.length];
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[self assert:0 equals:tmp.locations[0]];
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[self assert:1.0 equals:tmp.locations[1]];
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[self assert:components.slice(4,8) equals:tmp.colors[1].components];
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[self assert:components.slice(0,4) equals:tmp.colors[0].components];
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// Test three colors and no location
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var components = [ 0.2,0.2,0.4,0.4,
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0.6,0.6,0.8,0.8,
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0.6,0.6,0.8,0.8 ];
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var tmp = CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(),
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components);
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[self assert:3 equals:tmp.colors.length];
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[self assert:3 equals:tmp.locations.length];
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[self assert:0 equals:tmp.locations[0]];
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[self assert:0.5 equals:tmp.locations[1]];
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[self assert:1.0 equals:tmp.locations[2]];
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[self assert:components.slice(8,12) equals:tmp.colors[2].components];
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[self assert:components.slice(4,8) equals:tmp.colors[1].components];
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[self assert:components.slice(0,4) equals:tmp.colors[0].components];
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}
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/*
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Using location and components to specify two color stops that aren't
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evenly spread out.
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*/
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- (void)testCreateWithColorComponentsUsingTwoColorStops
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{
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var components = [ 0.2,0.2,0.4,0.4,
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0.6,0.6,0.8,0.8 ];
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var locations = [0.3,0.6];
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var tmp = CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(),
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components,locations);
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[self assert:2 equals:tmp.colors.length];
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[self assert:2 equals:tmp.locations.length];
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[self assert:0.3 equals:tmp.locations[0]];
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[self assert:0.6 equals:tmp.locations[1]];
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[self assert:components.slice(4,8) equals:tmp.colors[1].components];
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[self assert:components.slice(0,4) equals:tmp.colors[0].components];
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}
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/*
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Define three color components and ensure that the Gradient defined contains 3 color stops.
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*/
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- (void)testCanHaveMoreThanTwoColorStops
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{
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var components = [ 1,2,3,4, 5,6,7,8, 9,10,11,12 ];
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var locations = [1,2,3];
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var tmp = CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(),
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components, locations, 3);
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[self assert:3 equals:tmp.colors.length];
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[self assert:3 equals:tmp.locations.length];
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[self assert:1 equals:tmp.locations[0]];
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[self assert:2 equals:tmp.locations[1]];
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[self assert:3 equals:tmp.locations[2]];
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}
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@end
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