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/* -*- Mode: Javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// Tests the BezierCanvas API in the CubicBezierWidget module
var Cu = Components.utils;
var {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
var {CubicBezier, BezierCanvas} = require("devtools/client/shared/widgets/CubicBezierWidget");
function run_test() {
offsetsGetterReturnsData();
convertsOffsetsToCoordinates();
plotsCanvas();
}
function offsetsGetterReturnsData() {
do_print("offsets getter returns an array of 2 offset objects");
let b = new BezierCanvas(getCanvasMock(), getCubicBezier(), [.25, 0]);
let offsets = b.offsets;
do_check_eq(offsets.length, 2);
do_check_true("top" in offsets[0]);
do_check_true("left" in offsets[0]);
do_check_true("top" in offsets[1]);
do_check_true("left" in offsets[1]);
do_check_eq(offsets[0].top, "300px");
do_check_eq(offsets[0].left, "0px");
do_check_eq(offsets[1].top, "100px");
do_check_eq(offsets[1].left, "200px");
do_print("offsets getter returns data according to current padding");
b = new BezierCanvas(getCanvasMock(), getCubicBezier(), [0, 0]);
offsets = b.offsets;
do_check_eq(offsets[0].top, "400px");
do_check_eq(offsets[0].left, "0px");
do_check_eq(offsets[1].top, "0px");
do_check_eq(offsets[1].left, "200px");
}
function convertsOffsetsToCoordinates() {
do_print("Converts offsets to coordinates");
let b = new BezierCanvas(getCanvasMock(), getCubicBezier(), [.25, 0]);
let coordinates = b.offsetsToCoordinates({style: {
left: "0px",
top: "0px"
}});
do_check_eq(coordinates.length, 2);
do_check_eq(coordinates[0], 0);
do_check_eq(coordinates[1], 1.5);
coordinates = b.offsetsToCoordinates({style: {
left: "0px",
top: "300px"
}});
do_check_eq(coordinates[0], 0);
do_check_eq(coordinates[1], 0);
coordinates = b.offsetsToCoordinates({style: {
left: "200px",
top: "100px"
}});
do_check_eq(coordinates[0], 1);
do_check_eq(coordinates[1], 1);
}
function plotsCanvas() {
do_print("Plots the curve to the canvas");
let hasDrawnCurve = false;
let b = new BezierCanvas(getCanvasMock(), getCubicBezier(), [.25, 0]);
b.ctx.bezierCurveTo = () => {
hasDrawnCurve = true;
};
b.plot();
do_check_true(hasDrawnCurve);
}
function getCubicBezier() {
return new CubicBezier([0, 0, 1, 1]);
}
function getCanvasMock(w = 200, h = 400) {
return {
getContext: function () {
return {
scale: () => {},
translate: () => {},
clearRect: () => {},
beginPath: () => {},
closePath: () => {},
moveTo: () => {},
lineTo: () => {},
stroke: () => {},
arc: () => {},
fill: () => {},
bezierCurveTo: () => {},
save: () => {},
restore: () => {},
setTransform: () => {}
};
},
width: w,
height: h
};
}
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