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1 | /** |
2 | * @fileoverview Tests for no-extra-semi rule. | |
3 | * @author Nicholas C. Zakas | |
4 | */ | |
5 | ||
6 | "use strict"; | |
7 | ||
8 | //------------------------------------------------------------------------------ | |
9 | // Requirements | |
10 | //------------------------------------------------------------------------------ | |
11 | ||
12 | const rule = require("../../../lib/rules/no-extra-semi"), | |
13 | { RuleTester } = require("../../../lib/rule-tester"); | |
14 | ||
15 | //------------------------------------------------------------------------------ | |
16 | // Tests | |
17 | //------------------------------------------------------------------------------ | |
18 | ||
19 | const ruleTester = new RuleTester(); | |
20 | ||
21 | ruleTester.run("no-extra-semi", rule, { | |
22 | valid: [ | |
23 | "var x = 5;", | |
24 | "function foo(){}", | |
25 | "for(;;);", | |
26 | "while(0);", | |
27 | "do;while(0);", | |
28 | "for(a in b);", | |
29 | { code: "for(a of b);", parserOptions: { ecmaVersion: 6 } }, | |
30 | "if(true);", | |
31 | "if(true); else;", | |
32 | "foo: ;", | |
33 | "with(foo);", | |
34 | ||
35 | // Class body. | |
36 | { code: "class A { }", parserOptions: { ecmaVersion: 6 } }, | |
37 | { code: "var A = class { };", parserOptions: { ecmaVersion: 6 } }, | |
38 | { code: "class A { a() { this; } }", parserOptions: { ecmaVersion: 6 } }, | |
39 | { code: "var A = class { a() { this; } };", parserOptions: { ecmaVersion: 6 } }, | |
40 | { code: "class A { } a;", parserOptions: { ecmaVersion: 6 } }, | |
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41 | { code: "class A { field; }", parserOptions: { ecmaVersion: 2022 } }, |
42 | { code: "class A { field = 0; }", parserOptions: { ecmaVersion: 2022 } }, | |
43 | { code: "class A { static { foo; } }", parserOptions: { ecmaVersion: 2022 } }, | |
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44 | |
45 | // modules | |
46 | { code: "export const x = 42;", parserOptions: { ecmaVersion: 6, sourceType: "module" } }, | |
47 | { code: "export default 42;", parserOptions: { ecmaVersion: 6, sourceType: "module" } } | |
48 | ], | |
49 | invalid: [ | |
50 | { | |
51 | code: "var x = 5;;", | |
52 | output: "var x = 5;", | |
53 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
54 | }, | |
55 | { | |
56 | code: "function foo(){};", | |
57 | output: "function foo(){}", | |
58 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
59 | }, | |
60 | { | |
61 | code: "for(;;);;", | |
62 | output: "for(;;);", | |
63 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
64 | }, | |
65 | { | |
66 | code: "while(0);;", | |
67 | output: "while(0);", | |
68 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
69 | }, | |
70 | { | |
71 | code: "do;while(0);;", | |
72 | output: "do;while(0);", | |
73 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
74 | }, | |
75 | { | |
76 | code: "for(a in b);;", | |
77 | output: "for(a in b);", | |
78 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
79 | }, | |
80 | { | |
81 | code: "for(a of b);;", | |
82 | output: "for(a of b);", | |
83 | parserOptions: { ecmaVersion: 6 }, | |
84 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
85 | }, | |
86 | { | |
87 | code: "if(true);;", | |
88 | output: "if(true);", | |
89 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
90 | }, | |
91 | { | |
92 | code: "if(true){} else;;", | |
93 | output: "if(true){} else;", | |
94 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
95 | }, | |
96 | { | |
97 | code: "if(true){;} else {;}", | |
98 | output: "if(true){} else {}", | |
99 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }, { messageId: "unexpected", type: "EmptyStatement" }] | |
100 | }, | |
101 | { | |
102 | code: "foo:;;", | |
103 | output: "foo:;", | |
104 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
105 | }, | |
106 | { | |
107 | code: "with(foo);;", | |
108 | output: "with(foo);", | |
109 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
110 | }, | |
111 | { | |
112 | code: "with(foo){;}", | |
113 | output: "with(foo){}", | |
114 | errors: [{ messageId: "unexpected", type: "EmptyStatement" }] | |
115 | }, | |
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116 | { |
117 | code: "class A { static { ; } }", | |
118 | output: "class A { static { } }", | |
119 | parserOptions: { ecmaVersion: 2022 }, | |
120 | errors: [{ messageId: "unexpected", type: "EmptyStatement", column: 20 }] | |
121 | }, | |
122 | { | |
123 | code: "class A { static { a;; } }", | |
124 | output: "class A { static { a; } }", | |
125 | parserOptions: { ecmaVersion: 2022 }, | |
126 | errors: [{ messageId: "unexpected", type: "EmptyStatement", column: 22 }] | |
127 | }, | |
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128 | |
129 | // Class body. | |
130 | { | |
131 | code: "class A { ; }", | |
132 | output: "class A { }", | |
133 | parserOptions: { ecmaVersion: 6 }, | |
134 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 11 }] | |
135 | }, | |
136 | { | |
137 | code: "class A { /*a*/; }", | |
138 | output: "class A { /*a*/ }", | |
139 | parserOptions: { ecmaVersion: 6 }, | |
140 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 16 }] | |
141 | }, | |
142 | { | |
143 | code: "class A { ; a() {} }", | |
144 | output: "class A { a() {} }", | |
145 | parserOptions: { ecmaVersion: 6 }, | |
146 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 11 }] | |
147 | }, | |
148 | { | |
149 | code: "class A { a() {}; }", | |
150 | output: "class A { a() {} }", | |
151 | parserOptions: { ecmaVersion: 6 }, | |
152 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 17 }] | |
153 | }, | |
154 | { | |
155 | code: "class A { a() {}; b() {} }", | |
156 | output: "class A { a() {} b() {} }", | |
157 | parserOptions: { ecmaVersion: 6 }, | |
158 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 17 }] | |
159 | }, | |
160 | { | |
161 | code: "class A {; a() {}; b() {}; }", | |
162 | output: "class A { a() {} b() {} }", | |
163 | parserOptions: { ecmaVersion: 6 }, | |
164 | errors: [ | |
165 | { messageId: "unexpected", type: "Punctuator", column: 10 }, | |
166 | { messageId: "unexpected", type: "Punctuator", column: 18 }, | |
167 | { messageId: "unexpected", type: "Punctuator", column: 26 } | |
168 | ] | |
169 | }, | |
170 | { | |
171 | code: "class A { a() {}; get b() {} }", | |
172 | output: "class A { a() {} get b() {} }", | |
173 | parserOptions: { ecmaVersion: 6 }, | |
174 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 17 }] | |
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175 | }, |
176 | { | |
177 | code: "class A { field;; }", | |
178 | output: "class A { field; }", | |
179 | parserOptions: { ecmaVersion: 2022 }, | |
180 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 17 }] | |
181 | }, | |
182 | { | |
183 | code: "class A { static {}; }", | |
184 | output: "class A { static {} }", | |
185 | parserOptions: { ecmaVersion: 2022 }, | |
186 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 20 }] | |
187 | }, | |
188 | { | |
189 | code: "class A { static { a; }; foo(){} }", | |
190 | output: "class A { static { a; } foo(){} }", | |
191 | parserOptions: { ecmaVersion: 2022 }, | |
192 | errors: [{ messageId: "unexpected", type: "Punctuator", column: 24 }] | |
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193 | } |
194 | ] | |
195 | }); |