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color.test.js
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color.test.js
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'use strict';
var test = require('tape');
var mapnik = require('../');
test('should throw with invalid usage', (assert) => {
// no 'new' keyword
assert.throws(function() { mapnik.Color(); });
// invalid args
assert.throws(function() { new mapnik.Color(); });
assert.throws(function() { new mapnik.Color(1); });
assert.throws(function() { new mapnik.Color('foo'); });
assert.throws(function() { new mapnik.Color(-1,0,0); });
assert.throws(function() { new mapnik.Color(256,0,0); });
assert.throws(function() { new mapnik.Color(256,0,0,true); });
assert.throws(function() { new mapnik.Color(0,0,0,-1); });
assert.throws(function() { new mapnik.Color(0,0,0,-1,true); });
assert.end();
});
test('should throw for invalid property setting', (assert) => {
var c = new mapnik.Color('green');
assert.throws(function() { c.g = -1; });
assert.throws(function() { c.r = 256; });
assert.throws(function() { c.b = 'waffle'; });
assert.throws(function() { c.a = null; });
assert.throws(function() { c.premultiplied = null; });
assert.throws(function() { c.premultiplied = 1.0; });
assert.throws(function() { c.premultiplied = 'true'; });
assert.end();
});
test('should be green via keyword', (assert) => {
var c = new mapnik.Color('green');
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.hex(), '#008000');
assert.equal(c.premultiplied, false);
assert.equal(c.toString(), 'rgb(0,128,0)');
var c = new mapnik.Color('green', true);
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.hex(), '#008000');
assert.equal(c.premultiplied, true);
assert.equal(c.toString(), 'rgb(0,128,0)');
assert.end();
});
test('should be gray via rgb', (assert) => {
var c = new mapnik.Color(0, 128, 0);
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.premultiplied, false);
assert.equal(c.hex(), '#008000');
assert.equal(c.toString(), 'rgb(0,128,0)');
var c = new mapnik.Color(0, 128, 0, true);
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.premultiplied, true);
assert.equal(c.hex(), '#008000');
assert.equal(c.toString(), 'rgb(0,128,0)');
assert.end();
});
test('should be gray via rgba', (assert) => {
var c = new mapnik.Color(0, 128, 0, 255);
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.premultiplied, false);
assert.equal(c.hex(), '#008000');
assert.equal(c.toString(), 'rgb(0,128,0)');
var c = new mapnik.Color(0, 128, 0, 255, true);
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.premultiplied, true);
assert.equal(c.hex(), '#008000');
assert.equal(c.toString(), 'rgb(0,128,0)');
assert.end();
});
test('should be gray via rgba %', (assert) => {
var c = new mapnik.Color('rgba(0%,50%,0%,1)');
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.premultiplied, false);
assert.equal(c.hex(), '#008000');
assert.equal(c.toString(), 'rgb(0,128,0)');
var c = new mapnik.Color('rgba(0%,50%,0%,1)', true);
assert.equal(c.r, 0);
assert.equal(c.g, 128);
assert.equal(c.b, 0);
assert.equal(c.a, 255);
assert.equal(c.premultiplied, true);
assert.end();
});
test('should have all property setting working', (assert) => {
var c = new mapnik.Color(0,0,0,0);
assert.equal(c.r, 0);
assert.equal(c.g, 0);
assert.equal(c.b, 0);
assert.equal(c.a, 0);
assert.equal(c.premultiplied, false);
c.r = 1;
c.g = 2;
c.b = 3;
c.a = 4;
c.premultiplied = true;
assert.equal(c.r, 1);
assert.equal(c.g, 2);
assert.equal(c.b, 3);
assert.equal(c.a, 4);
assert.equal(c.premultiplied, true);
assert.end();
});