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Side by Side Diff: third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-fillRect-gradient-shadow.js

Issue 2678493002: Use testharness.js instead of js-test.js in LayoutTests/fast/canvas tests. (Closed)
Patch Set: Addressing comments Created 3 years, 10 months ago
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1 description("Ensure correct behavior of canvas with fillRect using a gradient fi llStyle and a shadow");
2
3 function print(message, color)
4 {
5 var paragraph = document.createElement("div");
6 paragraph.appendChild(document.createTextNode(message));
7 paragraph.style.fontFamily = "monospace";
8 if (color)
9 paragraph.style.color = color;
10 document.getElementById("console").appendChild(paragraph);
11 }
12
13 function shouldBeAround(a, b)
14 {
15 var evalA;
16 try {
17 evalA = eval(a);
18 } catch(e) {
19 evalA = e;
20 }
21
22 if (Math.abs(evalA - b) < 5)
23 print("PASS " + a + " is around " + b , "green")
24 else
25 print("FAIL " + a + " is not around " + b + " (actual: " + evalA + ")", "red");
26 }
27
28 function shouldBeSmaller(a, b)
29 {
30 var evalA;
31 try {
32 evalA = eval(a);
33 } catch(e) {
34 evalA = e;
35 }
36
37 if (evalA < b)
38 print("PASS " + a + " is smaller than " + b , "green")
39 else
40 print("FAIL " + a + " is not smaller than " + b + " (actual: " + evalA + ")", "red");
41 }
42
43 var canvas = document.createElement('canvas');
44 document.body.appendChild(canvas);
45 canvas.setAttribute('width', '400');
46 canvas.setAttribute('height', '800');
47 var ctx = canvas.getContext('2d');
48
49 var gradient = ctx.createLinearGradient(0, 0, 100, 100);
50 gradient.addColorStop(0, 'rgba(0, 0, 255, 1.0)');
51 gradient.addColorStop(1, 'rgba(0, 0, 255, 1.0)');
52
53 ctx.shadowOffsetX = 200;
54 ctx.fillStyle = gradient;
55
56 ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
57 ctx.fillRect(50, 50, 100, 100);
58
59 ctx.shadowColor = 'rgba(255, 0, 0, 0.3)';
60 ctx.fillRect(50, 200, 100, 100);
61
62 ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
63 ctx.shadowBlur = 5;
64 ctx.fillRect(50, 350, 100, 100);
65
66 ctx.shadowColor = 'rgba(255, 0, 0, 0.3)';
67 ctx.fillRect(50, 500, 100, 100);
68
69 ctx.rotate(Math.PI/2);
70 ctx.fillRect(650, -150, 100, 100);
71
72 var d; // imageData.data
73
74 // Verify solid shadow.
75 d = ctx.getImageData(250, 50, 1, 1).data;
76 shouldBe('d[0]', '255');
77 shouldBe('d[1]', '0');
78 shouldBe('d[2]', '0');
79 shouldBe('d[3]', '255');
80
81 d = ctx.getImageData(250, 149, 1, 1).data;
82 shouldBe('d[0]', '255');
83 shouldBe('d[1]', '0');
84 shouldBe('d[2]', '0');
85 shouldBe('d[3]', '255');
86
87 d = ctx.getImageData(349, 50, 1, 1).data;
88 shouldBe('d[0]', '255');
89 shouldBe('d[1]', '0');
90 shouldBe('d[2]', '0');
91 shouldBe('d[3]', '255');
92
93 d = ctx.getImageData(349, 149, 1, 1).data;
94 shouldBe('d[0]', '255');
95 shouldBe('d[1]', '0');
96 shouldBe('d[2]', '0');
97 shouldBe('d[3]', '255');
98
99 // Verify solid alpha shadow.
100 d = ctx.getImageData(250, 200, 1, 1).data;
101 shouldBe('d[0]', '255');
102 shouldBe('d[1]', '0');
103 shouldBe('d[2]', '0');
104 shouldBeAround('d[3]', '76');
105
106 d = ctx.getImageData(250, 299, 1, 1).data;
107 shouldBe('d[0]', '255');
108 shouldBe('d[1]', '0');
109 shouldBe('d[2]', '0');
110 shouldBeAround('d[3]', '76');
111
112 d = ctx.getImageData(349, 200, 1, 1).data;
113 shouldBe('d[0]', '255');
114 shouldBe('d[1]', '0');
115 shouldBe('d[2]', '0');
116 shouldBeAround('d[3]', '76');
117
118 d = ctx.getImageData(349, 299, 1, 1).data;
119 shouldBe('d[0]', '255');
120 shouldBe('d[1]', '0');
121 shouldBe('d[2]', '0');
122 shouldBeAround('d[3]', '76');
123
124 // Verify blurry shadow.
125 d = ctx.getImageData(248, 348, 1, 1).data;
126 shouldBe('d[0]', '255');
127 shouldBe('d[1]', '0');
128 shouldBe('d[2]', '0');
129 shouldBeSmaller('d[3]', '25');
130
131 d = ctx.getImageData(248, 451, 1, 1).data;
132 shouldBe('d[0]', '255');
133 shouldBe('d[1]', '0');
134 shouldBe('d[2]', '0');
135 shouldBeSmaller('d[3]', '25');
136
137 d = ctx.getImageData(351, 348, 1, 1).data;
138 shouldBe('d[0]', '255');
139 shouldBe('d[1]', '0');
140 shouldBe('d[2]', '0');
141 shouldBeSmaller('d[3]', '25');
142
143 d = ctx.getImageData(351, 451, 1, 1).data;
144 shouldBe('d[0]', '255');
145 shouldBe('d[1]', '0');
146 shouldBe('d[2]', '0');
147 shouldBeSmaller('d[3]', '25');
148
149 // Verify blurry alpha shadow.
150 d = ctx.getImageData(248, 498, 1, 1).data;
151 shouldBe('d[0]', '255');
152 shouldBe('d[1]', '0');
153 shouldBe('d[2]', '0');
154 shouldBeSmaller('d[3]', '10');
155
156 d = ctx.getImageData(248, 601, 1, 1).data;
157 shouldBe('d[0]', '255');
158 shouldBe('d[1]', '0');
159 shouldBe('d[2]', '0');
160 shouldBeSmaller('d[3]', '10');
161
162 d = ctx.getImageData(351, 498, 1, 1).data;
163 shouldBe('d[0]', '255');
164 shouldBe('d[1]', '0');
165 shouldBe('d[2]', '0');
166 shouldBeSmaller('d[3]', '10');
167
168 d = ctx.getImageData(351, 601, 1, 1).data;
169 shouldBe('d[0]', '255');
170 shouldBe('d[1]', '0');
171 shouldBe('d[2]', '0');
172 shouldBeSmaller('d[3]', '10');
173
174 // Verify blurry alpha shadow with rotation.
175 d = ctx.getImageData(249, 649, 1, 1).data;
176 shouldBe('d[0]', '255');
177 shouldBe('d[1]', '0');
178 shouldBe('d[2]', '0');
179 shouldBeSmaller('d[3]', '15');
180
181 d = ctx.getImageData(248, 751, 1, 1).data;
182 shouldBe('d[0]', '255');
183 shouldBe('d[1]', '0');
184 shouldBe('d[2]', '0');
185 shouldBeSmaller('d[3]', '15');
186
187 d = ctx.getImageData(350, 649, 1, 1).data;
188 shouldBe('d[0]', '255');
189 shouldBe('d[1]', '0');
190 shouldBe('d[2]', '0');
191 shouldBeSmaller('d[3]', '15');
192
193 d = ctx.getImageData(350, 750, 1, 1).data;
194 shouldBe('d[0]', '255');
195 shouldBe('d[1]', '0');
196 shouldBe('d[2]', '0');
197 shouldBeSmaller('d[3]', '15');
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