Needs more tests

[mattpage]

Needs more tests. Coverage is below 80%

[mattpage]

LineChart and BarChart are currently the most lacking.

File Statements Branches Functions Lines
Axis.js 90.72% 88/97 73.68% 42/57 66.67% 6/9 93.62% 88/94
Bar.js 100% 15/15 100% 0/0 100% 3/3 100% 15/15
BarChart.js 29.73% 44/148 0% 0/20 23.81% 5/21 28.57% 40/14
Chart.js 100% 14/14 100% 4/4 100% 2/2 100% 7/7
Legend.js 100% 18/18 50% 1/2 100% 3/3 100% 10/10
LineChart.js 28.74% 48/167 2.63% 1/38 28.57% 8/28 31.37% 48/153
Path.js 100% 19/19 100% 0/0 100% 4/4 100% 19/19
Tooltip.js 100% 12/12 50% 1/2 100% 2/2 100% 7/7
helpers.js 81.74% 94/115 69.7% 23/33 86.67% 13/15 81.82% 63/77