From e01c45df2e0590de5787992b2cf13eb16592230e Mon Sep 17 00:00:00 2001
From: Victor Woeltjen <victor.woeltjen@nasa.gov>
Date: Mon, 6 Apr 2015 14:27:43 -0700
Subject: [PATCH] [Plot] Test 2D chart drawing

Test drawing using fallback canvas 2D API, WTD-1070.
---
 platform/features/plot/src/Canvas2DChart.js   |  6 +-
 .../features/plot/test/Canvas2DChartSpec.js   | 72 +++++++++++++++++++
 platform/features/plot/test/suite.json        |  1 +
 3 files changed, 76 insertions(+), 3 deletions(-)
 create mode 100644 platform/features/plot/test/Canvas2DChartSpec.js

diff --git a/platform/features/plot/src/Canvas2DChart.js b/platform/features/plot/src/Canvas2DChart.js
index 244fe75ec3..d3d344d56a 100644
--- a/platform/features/plot/src/Canvas2DChart.js
+++ b/platform/features/plot/src/Canvas2DChart.js
@@ -14,10 +14,10 @@ define(
          */
         function Canvas2DChart(canvas) {
             var c2d = canvas.getContext('2d'),
-                dimensions,
-                origin,
                 width = canvas.width,
-                height = canvas.height;
+                height = canvas.height,
+                dimensions = [ width, height ],
+                origin = [ 0, 0 ];
 
             // Convert from logical to physical x coordinates
             function x(v) {
diff --git a/platform/features/plot/test/Canvas2DChartSpec.js b/platform/features/plot/test/Canvas2DChartSpec.js
new file mode 100644
index 0000000000..06f53c8bf8
--- /dev/null
+++ b/platform/features/plot/test/Canvas2DChartSpec.js
@@ -0,0 +1,72 @@
+/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/
+
+/**
+ * MergeModelsSpec. Created by vwoeltje on 11/6/14.
+ */
+define(
+    ["../src/Canvas2DChart"],
+    function (Canvas2DChart) {
+        "use strict";
+
+        describe("A canvas 2d chart", function () {
+            var mockCanvas,
+                mock2d,
+                chart;
+
+            beforeEach(function () {
+                mockCanvas = jasmine.createSpyObj("canvas", [ "getContext" ]);
+                mock2d = jasmine.createSpyObj(
+                    "2d",
+                    [
+                        "clearRect",
+                        "beginPath",
+                        "moveTo",
+                        "lineTo",
+                        "stroke",
+                        "fillRect"
+                    ]
+                );
+                mockCanvas.getContext.andReturn(mock2d);
+
+                chart = new Canvas2DChart(mockCanvas);
+            });
+
+            it("allows the canvas to be cleared", function () {
+                chart.clear();
+                expect(mock2d.clearRect).toHaveBeenCalled();
+            });
+
+            it("doees not construct if 2D is unavailable", function () {
+                mockCanvas.getContext.andReturn(undefined);
+                expect(function () {
+                    return new Canvas2DChart(mockCanvas);
+                }).toThrow();
+            });
+
+            it("allows dimensions to be set", function () {
+                // No return value, just verify API is present
+                chart.setDimensions([120, 120], [0, 10]);
+            });
+
+            it("allows lines to be drawn", function () {
+                var testBuffer = [ 0, 1, 3, 8 ],
+                    testColor = [ 0.25, 0.33, 0.66, 1.0 ],
+                    testPoints = 2;
+                chart.drawLine(testBuffer, testColor, testPoints);
+                expect(mock2d.beginPath).toHaveBeenCalled();
+                expect(mock2d.lineTo.calls.length).toEqual(1);
+                expect(mock2d.stroke).toHaveBeenCalled();
+            });
+
+            it("allows squares to be drawn", function () {
+                var testMin = [0, 1],
+                    testMax = [10, 10],
+                    testColor = [ 0.25, 0.33, 0.66, 1.0 ];
+
+                chart.drawSquare(testMin, testMax, testColor);
+                expect(mock2d.fillRect).toHaveBeenCalled();
+            });
+
+        });
+    }
+);
\ No newline at end of file
diff --git a/platform/features/plot/test/suite.json b/platform/features/plot/test/suite.json
index 2df3badfef..92ee3b07c8 100644
--- a/platform/features/plot/test/suite.json
+++ b/platform/features/plot/test/suite.json
@@ -1,4 +1,5 @@
 [
+    "Canvas2DChart",
     "GLChart",
     "MCTChart",
     "PlotController",