openlayers
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Build tools and sources for developing OpenLayers based mapping applications
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JavaScript
goog.provide('ol.test.color');
goog.require('ol.color');
describe('ol.color', function() {
describe('ol.color.asArray()', function() {
it('returns the same for an array', function() {
var color = [1, 2, 3, 0.4];
var got = ol.color.asArray(color);
expect(got).to.be(color);
});
it('returns an array given an rgba string', function() {
var color = ol.color.asArray('rgba(1,2,3,0.4)');
expect(color).to.eql([1, 2, 3, 0.4]);
});
it('returns an array given an rgb string', function() {
var color = ol.color.asArray('rgb(1,2,3)');
expect(color).to.eql([1, 2, 3, 1]);
});
it('returns an array given a hex string', function() {
var color = ol.color.asArray('#00ccff');
expect(color).to.eql([0, 204, 255, 1]);
});
});
describe('ol.color.asString()', function() {
it('returns the same for a string', function() {
var color = 'rgba(0,1,2,0.3)';
var got = ol.color.asString(color);
expect(got).to.be(color);
});
it('returns a string given an rgba array', function() {
var color = ol.color.asString([1, 2, 3, 0.4]);
expect(color).to.eql('rgba(1,2,3,0.4)');
});
it('returns a string given an rgb array', function() {
var color = ol.color.asString([1, 2, 3]);
expect(color).to.eql('rgba(1,2,3,1)');
});
});
describe('ol.color.fromString', function() {
before(function() {
sinon.spy(ol.color, 'fromStringInternal_');
});
after(function() {
ol.color.fromStringInternal_.restore();
});
if (ol.ENABLE_NAMED_COLORS) {
it('can parse named colors', function() {
expect(ol.color.fromString('red')).to.eql([255, 0, 0, 1]);
});
}
it('can parse 3-digit hex colors', function() {
expect(ol.color.fromString('#087')).to.eql([0, 136, 119, 1]);
});
it('can parse 6-digit hex colors', function() {
expect(ol.color.fromString('#56789a')).to.eql([86, 120, 154, 1]);
});
it('can parse rgb colors', function() {
expect(ol.color.fromString('rgb(0, 0, 255)')).to.eql([0, 0, 255, 1]);
});
it('ignores whitespace before, between & after numbers (rgb)', function() {
expect(ol.color.fromString('rgb( \t 0 , 0 \n , 255 )')).to.eql(
[0, 0, 255, 1]);
});
it('can parse rgba colors', function() {
// opacity 0
expect(ol.color.fromString('rgba(255, 255, 0, 0)')).to.eql(
[255, 255, 0, 0]);
// opacity 0.0 (simple float)
expect(ol.color.fromString('rgba(255, 255, 0, 0.0)')).to.eql(
[255, 255, 0, 0]);
// opacity 0.0000000000000000 (float with 16 digits)
expect(ol.color.fromString('rgba(255, 255, 0, 0.0000000000000000)')).to.eql(
[255, 255, 0, 0]);
// opacity 0.1 (simple float)
expect(ol.color.fromString('rgba(255, 255, 0, 0.1)')).to.eql(
[255, 255, 0, 0.1]);
// opacity 0.1111111111111111 (float with 16 digits)
expect(ol.color.fromString('rgba(255, 255, 0, 0.1111111111111111)')).to.eql(
[255, 255, 0, 0.1111111111111111]);
// opacity 1
expect(ol.color.fromString('rgba(255, 255, 0, 1)')).to.eql(
[255, 255, 0, 1]);
// opacity 1.0
expect(ol.color.fromString('rgba(255, 255, 0, 1.0)')).to.eql(
[255, 255, 0, 1]);
// opacity 1.0000000000000000
expect(ol.color.fromString('rgba(255, 255, 0, 1.0000000000000000)')).to.eql(
[255, 255, 0, 1]);
// with 30 decimal digits
expect(ol.color.fromString('rgba(255, 255, 0, 0.123456789012345678901234567890)')).to.eql(
[255, 255, 0, 0.123456789012345678901234567890]);
});
it('ignores whitespace before, between & after numbers (rgba)', function() {
expect(ol.color.fromString('rgba( \t 0 , 0 \n , 255 , 0.4711 )')).to.eql(
[0, 0, 255, 0.4711]);
});
it('caches parsed values', function() {
var count = ol.color.fromStringInternal_.callCount;
ol.color.fromString('aquamarine');
expect(ol.color.fromStringInternal_.callCount).to.be(count + 1);
ol.color.fromString('aquamarine');
expect(ol.color.fromStringInternal_.callCount).to.be(count + 1);
});
it('throws an error on invalid colors', function() {
var invalidColors = ['tuesday', '#1234567', 'rgb(255.0,0,0)'];
var i, ii;
for (i = 0, ii < invalidColors.length; i < ii; ++i) {
expect(function() {
ol.color.fromString(invalidColors[i]);
}).to.throwException();
}
});
});
describe('ol.color.normalize', function() {
it('clamps out-of-range channels', function() {
expect(ol.color.normalize([-1, 256, 0, 2])).to.eql([0, 255, 0, 1]);
});
it('rounds color channels to integers', function() {
expect(ol.color.normalize([1.2, 2.5, 3.7, 1])).to.eql([1, 3, 4, 1]);
});
});
describe('ol.color.toString', function() {
it('converts valid colors', function() {
expect(ol.color.toString([1, 2, 3, 0.4])).to.be('rgba(1,2,3,0.4)');
});
it('rounds to integers if needed', function() {
expect(ol.color.toString([1.2, 2.5, 3.7, 0.4])).to.be('rgba(1,3,4,0.4)');
});
it('sets default alpha value if undefined', function() {
expect(ol.color.toString([0, 0, 0])).to.be('rgba(0,0,0,1)');
});
});
});