/
no-cond-assign.js
71 lines (65 loc) · 5.54 KB
/
no-cond-assign.js
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
/**
* @fileoverview Tests for no-cond-assign rule.
* @author Stephen Murray <spmurrayzzz>
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-cond-assign"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("no-cond-assign", rule, {
valid: [
"var x = 0; if (x == 0) { var b = 1; }",
{ code: "var x = 0; if (x == 0) { var b = 1; }", options: ["always"] },
"var x = 5; while (x < 5) { x = x + 1; }",
"if ((someNode = someNode.parentNode) !== null) { }",
{ code: "if ((someNode = someNode.parentNode) !== null) { }", options: ["except-parens"] },
"if ((a = b));",
"while ((a = b));",
"do {} while ((a = b));",
"for (;(a = b););",
"for (;;) {}",
"if (someNode || (someNode = parentNode)) { }",
"while (someNode || (someNode = parentNode)) { }",
"do { } while (someNode || (someNode = parentNode));",
"for (;someNode || (someNode = parentNode););",
{ code: "if ((function(node) { return node = parentNode; })(someNode)) { }", options: ["except-parens"] },
{ code: "if ((function(node) { return node = parentNode; })(someNode)) { }", options: ["always"] },
{ code: "if ((node => node = parentNode)(someNode)) { }", options: ["except-parens"], parserOptions: { ecmaVersion: 6 } },
{ code: "if ((node => node = parentNode)(someNode)) { }", options: ["always"], parserOptions: { ecmaVersion: 6 } },
{ code: "if (function(node) { return node = parentNode; }) { }", options: ["except-parens"] },
{ code: "if (function(node) { return node = parentNode; }) { }", options: ["always"] },
{ code: "x = 0;", options: ["always"] },
"var x; var b = (x === 0) ? 1 : 0;",
{ code: "switch (foo) { case a = b: bar(); }", options: ["except-parens"] },
{ code: "switch (foo) { case a = b: bar(); }", options: ["always"] },
{ code: "switch (foo) { case baz + (a = b): bar(); }", options: ["always"] }
],
invalid: [
{ code: "var x; if (x = 0) { var b = 1; }", errors: [{ messageId: "missing", type: "AssignmentExpression", line: 1, column: 12, endLine: 1, endColumn: 17 }] },
{ code: "var x; while (x = 0) { var b = 1; }", errors: [{ messageId: "missing", type: "AssignmentExpression" }] },
{ code: "var x = 0, y; do { y = x; } while (x = x + 1);", errors: [{ messageId: "missing", type: "AssignmentExpression" }] },
{ code: "var x; for(; x+=1 ;){};", errors: [{ messageId: "missing", type: "AssignmentExpression" }] },
{ code: "var x; if ((x) = (0));", errors: [{ messageId: "missing", type: "AssignmentExpression" }] },
{ code: "if (someNode || (someNode = parentNode)) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "an 'if' statement" }, type: "AssignmentExpression", column: 18, endColumn: 39 }] },
{ code: "while (someNode || (someNode = parentNode)) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'while' statement" }, type: "AssignmentExpression" }] },
{ code: "do { } while (someNode || (someNode = parentNode));", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'do...while' statement" }, type: "AssignmentExpression" }] },
{ code: "for (; (typeof l === 'undefined' ? (l = 0) : l); i++) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'for' statement" }, type: "AssignmentExpression" }] },
{ code: "if (x = 0) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "an 'if' statement" }, type: "AssignmentExpression" }] },
{ code: "while (x = 0) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'while' statement" }, type: "AssignmentExpression" }] },
{ code: "do { } while (x = x + 1);", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'do...while' statement" }, type: "AssignmentExpression" }] },
{ code: "for(; x = y; ) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'for' statement" }, type: "AssignmentExpression" }] },
{ code: "if ((x = 0)) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "an 'if' statement" }, type: "AssignmentExpression" }] },
{ code: "while ((x = 0)) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'while' statement" }, type: "AssignmentExpression" }] },
{ code: "do { } while ((x = x + 1));", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'do...while' statement" }, type: "AssignmentExpression" }] },
{ code: "for(; (x = y); ) { }", options: ["always"], errors: [{ messageId: "unexpected", data: { type: "a 'for' statement" }, type: "AssignmentExpression" }] },
{ code: "var x; var b = (x = 0) ? 1 : 0;", errors: [{ messageId: "missing", type: "AssignmentExpression" }] },
{ code: "var x; var b = x && (y = 0) ? 1 : 0;", options: ["always"], errors: [{ messageId: "unexpected", type: "AssignmentExpression" }] },
{ code: "(((3496.29)).bkufyydt = 2e308) ? foo : bar;", errors: [{ messageId: "missing", type: "AssignmentExpression" }] }
]
});