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Serenity Operating System
1test("regular comments", () => {
2 const source = `
3var i = 0;
4// i++;
5/* i++; */
6/*
7i++;
8*/
9/**/ i++;
10i;`;
11
12 expect(source).toEvalTo(1);
13});
14
15test("html comments", () => {
16 const source = `
17var i = 0;
18var j = 0;
19<!-- i++; --> i++;
20<!-- i++;
21i++;
22--> i++;
23/**/ --> i++;
24j --> i++;
25i;`;
26 expect(source).toEvalTo(2);
27});
28
29test("html comments directly after block comment", () => {
30 expect("0 /* */-->i").not.toEval();
31 expect(`0 /*
32 */-->i`).toEval();
33 expect(`0 /*
34 */-->i
35 'a'`).toEvalTo("a");
36});
37
38test("unterminated multi-line comment", () => {
39 expect("/*").not.toEval();
40 expect("/**").not.toEval();
41 expect("/*/").not.toEval();
42 expect("/* foo").not.toEval();
43 expect("foo /*").not.toEval();
44});
45
46test("hashbang comments", () => {
47 expect("#!").toEvalTo(undefined);
48 expect("#!/bin/js").toEvalTo(undefined);
49 expect("#!\n1").toEvalTo(1);
50 expect(" #!").not.toEval();
51 expect("\n#!").not.toEval();
52 expect("#!\n#!").not.toEval();
53});