docs(): revise test section

[ShaMan123]

Motivation

@chau-a-nguyen #8299 (comment)

Description

Revised the tests section in CONTRIBUTING and added the codesandbox links to the issue link page

Changes

Gist

In Action

[github-actions]

Build Stats

file / KB (diff)	bundled	minified
fabric	918.482 (0)	305.413 (0)

[github-actions]

Coverage after merging docs-tests into master will be

83.04%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
index.node.ts	7.69%	100%	0%	14.29%	17, 20, 23, 35, 38, 41
src
ClassRegistry.ts	100%	100%	100%	100%
Collection.ts	94.71%	94.64%	86.67%	97.09%	101, 104, 207–208, 233–234
CommonMethods.ts	96.55%	87.50%	100%	100%	10
Intersection.ts	100%	100%	100%	100%
Observable.ts	87.23%	85.29%	84.62%	89.36%	144–145, 170–171, 39–40, 48, 57, 91, 99
Point.ts	100%	100%	100%	100%
Shadow.ts	98.36%	95.65%	100%	100%	178
cache.ts	97.06%	90%	100%	100%	57
config.ts	75%	66.67%	66.67%	82.76%	130, 138, 138, 138, 138, 138–140, 151–153
constants.ts	100%	100%	100%	100%
src/Pattern
Pattern.ts	92.31%	91.89%	90%	93.55%	118, 129, 138, 31, 94
src/brushes
BaseBrush.ts	100%	100%	100%	100%
CircleBrush.ts	0%	0%	0%	0%	108, 108, 108, 110, 112, 114–116, 118–121, 128–129, 13, 136, 138, 23–24, 32–36, 40–44, 51–54, 62–66, 68, 76, 76, 76, 76, 76–77, 79, 79, 79–82, 84, 92–93, 95, 97–99
PatternBrush.ts	97.06%	87.50%	100%	100%	21
PencilBrush.ts	91.06%	82.35%	100%	93.81%	122–123, 152, 152–154, 176, 176, 276, 280, 285–286, 68–69, 84–85
SprayBrush.ts	0%	0%	0%	0%	107, 107, 107, 107, 107–108, 110–111, 118–119, 121, 123–127, 136, 140–141, 141, 149, 149, 149–152, 154–157, 161–162, 164, 166–169, 17, 172, 179, 18, 180, 182, 184–185, 187, 194–195, 197–198, 20, 201, 201, 208, 208, 21, 212, 22, 22, 22–24, 28, 32, 39, 46, 53, 60, 67, 84–86, 94–96, 98–99
src/canvas
Canvas.ts	79.05%	77.54%	83.05%	79.57%	1000–1001, 1001, 1001–1003, 1005–1006, 1006, 1006, 1008, 1016, 1016, 1016–1018, 1018, 1018, 1024–1025, 1033–1034, 1034, 1034–1035, 1040, 1042, 1073–1075, 1078–1079, 1083–1084, 1197–1199, 1202–1203, 1276, 1395, 1515, 161, 186, 296–297, 300–304, 309, 332–333, 338–343, 36, 363, 363, 363–364, 364, 364–365, 373, 378–379, 379, 379–380, 382, 391, 397–398, 398, 398, 40, 441, 449, 453, 453, 453–454, 456, 538–539, 539, 539–540, 546, 546, 546–548, 568, 570, 570, 570–571, 571, 571, 574, 574, 574–575, 578, 587–588, 590–591, 593, 593–594, 596–597, 609–610, 610, 610–611, 613–618, 624, 631, 668, 668, 668, 670, 672–677, 683, 689, 689, 689–690, 692, 695, 700, 713, 741, 741, 799–800, 800, 800–801, 803, 806–807, 807, 807–808, 810–811, 814, 814–816, 819–820, 890, 902, 909, 930, 962, 983–984
SelectableCanvas.ts	94.43%	92.24%	94.23%	96.17%	1115, 1115–1116, 1119, 1139, 1139, 1188, 1196, 1315, 1317, 1319–1320, 519, 694–695, 697–698, 698, 698, 747–748, 809–810, 863–865, 897, 902–903, 930–931
StaticCanvas.ts	96.78%	93.09%	100%	98.53%	1036–1037, 1037, 1037–1038, 1158, 1168, 1224–1225, 1228, 1263–1264, 1340, 1349, 1349, 1353, 1353, 1400–1401, 308–309, 325, 693, 705–706
TextEditingManager.ts	84.31%	71.43%	91.67%	88%	17–18, 18, 18–19, 19, 19
src/canvas/DOMManagers
CanvasDOMManager.ts	95.52%	70%	100%	100%	21–22, 29
StaticCanvasDOMManager.ts	100%	100%	100%	100%
util.ts	86.67%	80.56%	83.33%	93.94%	14, 26, 63–64, 67, 67, 74, 93–94
src/color
Color.ts	94.96%	91.67%	96.30%	96.05%	233, 258–259, 267–268, 48
color_map.ts	100%	100%	100%	100%
constants.ts	100%	100%	100%	100%
util.ts	85.71%	76.92%	100%	89.74%	55–56, 56, 58, 58, 58–59, 61–62, 89
src/controls
Control.ts	93.33%	87.88%	91.67%	97.78%	175, 240, 327, 327, 362
changeWidth.ts	100%	100%	100%	100%
commonControls.ts	100%	100%	100%	100%
controlRendering.ts	81.63%	78%	100%	84.78%	106, 111, 121, 121, 45, 50, 61, 61, 65–72, 81–82
drag.ts	100%	100%	100%	100%
fireEvent.ts	88.89%	75%	100%	100%	13
polyControl.ts	5.97%	0%	0%	11.11%	100, 105, 119, 119, 119, 119, 119, 121–124, 124, 127, 134, 17, 25–29, 29, 29, 29, 29, 29, 29, 29, 50–56, 56, 56, 56, 56, 58, 63–64, 66, 76, 82–83, 83, 83–84, 88–90, 90, 90, 90, 90, 92
rotate.ts	19.57%	12.50%	50%	21.43%	41, 45, 51, 51, 51–52, 55–57, 59, 59, 59, 59, 59–61, 61, 61–63, 65, 65, 65–67, 67, 67–68, 73, 73, 73–74, 76, 78, 80–81
scale.ts	93.57%	92.94%	100%	93.67%	129–130, 132–134, 148–149, 181–183, 42
scaleSkew.ts	78.79%	64.29%	100%	85.71%	27, 29, 29, 29, 31, 33, 35
skew.ts	91.03%	79.31%	100%	97.67%	131–132, 163–164, 171, 177, 179
util.ts	100%	100%	100%	100%
wrapWithFireEvent.ts	100%	100%	100%	100%
wrapWithFixedAnchor.ts	100%	100%	100%	100%
src/env
browser.ts	84.21%	77.78%	50%	100%	14, 17
index.ts	100%	100%	100%	100%