html2canvas/tests/node/color.js

var Color = require('../../src/color');
var assert = require('assert');

describe("Colors", function() {
    describe("named colors", function() {
        it("bisque", function () {
            var c = new Color("bisque");
            assertColor(c, 255, 228, 196, null);
            assert.equal(c.isTransparent(), false);
        });

        it("BLUE", function () {
            var c = new Color("BLUE");
            assertColor(c, 0, 0, 255, null);
            assert.equal(c.isTransparent(), false);
        });
    });

    describe("rgb()", function() {
        it("rgb(1,3,5)", function () {
            var c = new Color("rgb(1,3,5)");
            assertColor(c, 1, 3, 5, null);
            assert.equal(c.isTransparent(), false);
        });

        it("rgb(222, 111, 50)", function () {
            var c = new Color("rgb(222, 111, 50)");
            assertColor(c, 222, 111, 50, null);
            assert.equal(c.isTransparent(), false);
        });

        it("rgb( 222, 111 , 50)", function () {
            var c = new Color("rgb(222 , 111 , 50)");
            assertColor(c, 222, 111, 50, null);
            assert.equal(c.isTransparent(), false);
        });
    });

    describe("rgba()", function() {
        it("rgba(200,3,5,1)", function () {
            var c = new Color("rgba(200,3,5,1)");
            assertColor(c, 200, 3, 5, 1);
            assert.equal(c.isTransparent(), false);
        });

        it("rgba(222, 111, 50, 0.22)", function () {
            var c = new Color("rgba(222, 111, 50, 0.22)");
            assertColor(c, 222, 111, 50, 0.22);
            assert.equal(c.isTransparent(), false);
        });

        it("rgba( 222, 111 , 50, 0.123 )", function () {
            var c = new Color("rgba(222 , 111 , 50, 0.123)");
            assertColor(c, 222, 111, 50, 0.123);
            assert.equal(c.isTransparent(), false);
        });
    });

    describe("hex", function() {
        it("#7FFFD4", function () {
            var c = new Color("#7FFFD4");
            assertColor(c, 127, 255, 212, null);
            assert.equal(c.isTransparent(), false);
        });

        it("#f0ffff", function () {
            var c = new Color("#f0ffff");
            assertColor(c, 240, 255, 255, null);
            assert.equal(c.isTransparent(), false);
        });

        it("#fff", function () {
            var c = new Color("#fff");
            assertColor(c, 255, 255, 255, null);
            assert.equal(c.isTransparent(), false);
        });
    });

    describe("from array", function() {
        it("[1,2,3]", function () {
            var c = new Color([1,2,3]);
            assertColor(c, 1, 2, 3, null);
            assert.equal(c.isTransparent(), false);
        });

        it("[5,6,7,1]", function () {
            var c = new Color([5,6,7, 1]);
            assertColor(c, 5, 6, 7, 1);
            assert.equal(c.isTransparent(), false);
        });

        it("[5,6,7,0]", function () {
            var c = new Color([5,6,7, 0]);
            assertColor(c, 5, 6, 7, 0);
            assert.equal(c.isTransparent(), true);
        });
    });

    describe("transparency", function() {
        it("transparent", function () {
            var c = new Color("transparent");
            assertColor(c, 0, 0, 0, 0);
            assert.equal(c.isTransparent(), true);
        });

        it("rgba(255,255,255,0)", function () {
            var c = new Color("rgba(255,255,255,0)");
            assertColor(c, 255, 255, 255, 0);
            assert.equal(c.isTransparent(), true);
        });
    });
});

function assertColor(c, r, g, b, a) {
    assert.equal(c.r, r);
    assert.equal(c.g, g);
    assert.equal(c.b, b);
    assert.equal(c.a, a);
}