1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
import { Filter, FilterType, parseFilterString } from "../src/filter.ts";import { assertEquals } from "./deps.ts";
function parserTest(input: string, output: Filter[]) {  assertEquals(parseFilterString(input), output);}
function parserExpectError(input: string) {  try {    parseFilterString(input);    throw new Error("Expected error");  } catch (e) {    if (e.message === "Expected error") {      throw e;    }  }}
Deno.test("parseFilterString", async (t) => {  await t.step("blur", () => {    parserTest("blur(10px)", [      {        type: FilterType.Blur,        value: 10,      },    ]);
    parserTest("blur(10in)", [      {        type: FilterType.Blur,        value: 10 * 96,      },    ]);
    parserTest("blur(10px) blur(20px)", [      {        type: FilterType.Blur,        value: 10,      },      {        type: FilterType.Blur,        value: 20,      },    ]);
    parserExpectError("blur()");    parserExpectError("blur(10px 20px)");    parserExpectError("blur(10px, 20px)");  });
  await t.step("brightness", () => {    parserTest("brightness(10)", [      {        type: FilterType.Brightness,        value: 0.1,      },    ]);
    parserTest("brightness(10) brightness(20)", [      {        type: FilterType.Brightness,        value: 0.1,      },      {        type: FilterType.Brightness,        value: 0.2,      },    ]);
    parserExpectError("brightness()");    parserExpectError("brightness(10px)");    parserExpectError("brightness(10px 20px)");    parserExpectError("brightness(10px, 20px)");  });
  await t.step("contrast", () => {    parserTest("contrast(10)", [      {        type: FilterType.Contrast,        value: 0.1,      },    ]);  });
  await t.step("drop-shadow", () => {    parserTest("drop-shadow(10px 20px 30px #000)", [      {        type: FilterType.DropShadow,        dx: 10,        dy: 20,        radius: 30,        color: "#000",      },    ]);
    parserTest("drop-shadow(10px, 20px, 30px, #000)", [      {        type: FilterType.DropShadow,        dx: 10,        dy: 20,        radius: 30,        color: "#000",      },    ]);
    parserTest(      "drop-shadow(10px 20px 30px #000) drop-shadow(40px 50px 60px #fff)",      [        {          type: FilterType.DropShadow,          dx: 10,          dy: 20,          radius: 30,          color: "#000",        },        {          type: FilterType.DropShadow,          dx: 40,          dy: 50,          radius: 60,          color: "#fff",        },      ],    );
    parserExpectError("drop-shadow()");    parserExpectError("drop-shadow(10px 20px 30px)");    parserExpectError("drop-shadow(10px 20px 30px #000 #fff)");  });});