eslint/tests/lib/rules/no-loss-of-precision.js

   1 /**
   2  *@fileoverview Tests for no-loss-of-precision rule.
   3  *@author Jacob Moore
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-loss-of-precision"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Helpers
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 ruleTester.run("no-loss-of-precision", rule, {
  22     valid: [
  23         "var x = 12345",
  24         "var x = 123.456",
  25         "var x = -123.456",
  26         "var x = -123456",
  27         "var x = 123e34",
  28         "var x = 123.0e34",
  29         "var x = 123e-34",
  30         "var x = -123e34",
  31         "var x = -123e-34",
  32         "var x = 12.3e34",
  33         "var x = 12.3e-34",
  34         "var x = -12.3e34",
  35         "var x = -12.3e-34",
  36         "var x = 12300000000000000000000000",
  37         "var x = -12300000000000000000000000",
  38         "var x = 0.00000000000000000000000123",
  39         "var x = -0.00000000000000000000000123",
  40         "var x = 9007199254740991",
  41         "var x = 0",
  42         "var x = 0.0",
  43         "var x = 0.000000000000000000000000000000000000000000000000000000000000000000000000000000",
  44         "var x = -0",
  45         "var x = 123.0000000000000000000000",
  46         "var x = 019.5",
  47         "var x = 0195",
  48         "var x = 0e5",
  49
  50
  51         { code: "var x = 0b11111111111111111111111111111111111111111111111111111", parserOptions: { ecmaVersion: 6 } },
  52         { code: "var x = 0B11111111111111111111111111111111111111111111111111111", parserOptions: { ecmaVersion: 6 } },
  53
  54         { code: "var x = 0o377777777777777777", parserOptions: { ecmaVersion: 6 } },
  55         { code: "var x = 0O377777777777777777", parserOptions: { ecmaVersion: 6 } },
  56         "var x = 0377777777777777777",
  57
  58         "var x = 0x1FFFFFFFFFFFFF",
  59         "var x = 0X1FFFFFFFFFFFFF",
  60         "var x = true",
  61         "var x = 'abc'",
  62         "var x = ''",
  63         "var x = null",
  64         "var x = undefined",
  65         "var x = {}",
  66         "var x = ['a', 'b']",
  67         "var x = new Date()",
  68         "var x = '9007199254740993'"
  69
  70     ],
  71     invalid: [
  72         {
  73             code: "var x = 9007199254740993",
  74             errors: [{ messageId: "noLossOfPrecision" }]
  75         },
  76         {
  77             code: "var x = 9007199254740.993e3",
  78             errors: [{ messageId: "noLossOfPrecision" }]
  79         },
  80         {
  81             code: "var x = 9.007199254740993e15",
  82             errors: [{ messageId: "noLossOfPrecision" }]
  83         },
  84         {
  85             code: "var x = -9007199254740993",
  86             errors: [{ messageId: "noLossOfPrecision" }]
  87         },
  88         {
  89             code: "var x = 900719.9254740994",
  90             errors: [{ messageId: "noLossOfPrecision" }]
  91         },
  92         {
  93             code: "var x = -900719.9254740994",
  94             errors: [{ messageId: "noLossOfPrecision" }]
  95         },
  96
  97         {
  98             code: "var x = 5123000000000000000000000000001",
  99             errors: [{ messageId: "noLossOfPrecision" }]
 100         },
 101         {
 102             code: "var x = -5123000000000000000000000000001",
 103             errors: [{ messageId: "noLossOfPrecision" }]
 104         },
 105         {
 106             code: "var x = 1230000000000000000000000.0",
 107             errors: [{ messageId: "noLossOfPrecision" }]
 108         },
 109         {
 110             code: "var x = 1.0000000000000000000000123",
 111             errors: [{ messageId: "noLossOfPrecision" }]
 112         },
 113         {
 114             code: "var x = 17498005798264095394980017816940970922825355447145699491406164851279623993595007385788105416184430592",
 115             errors: [{ messageId: "noLossOfPrecision" }]
 116         },
 117         {
 118             code: "var x = 2e999",
 119             errors: [{ messageId: "noLossOfPrecision" }]
 120         },
 121         {
 122             code: "var x = .1230000000000000000000000",
 123             errors: [{ messageId: "noLossOfPrecision" }]
 124         },
 125         {
 126             code: "var x = 0b100000000000000000000000000000000000000000000000000001",
 127             parserOptions: { ecmaVersion: 6 },
 128             errors: [{ messageId: "noLossOfPrecision" }]
 129         },
 130         {
 131             code: "var x = 0B100000000000000000000000000000000000000000000000000001",
 132             parserOptions: { ecmaVersion: 6 },
 133             errors: [{ messageId: "noLossOfPrecision" }]
 134         },
 135         {
 136             code: "var x = 0o400000000000000001",
 137             parserOptions: { ecmaVersion: 6 },
 138             errors: [{ messageId: "noLossOfPrecision" }]
 139         },
 140         {
 141             code: "var x = 0O400000000000000001",
 142             parserOptions: { ecmaVersion: 6 },
 143             errors: [{ messageId: "noLossOfPrecision" }]
 144         },
 145         {
 146             code: "var x = 0400000000000000001",
 147             errors: [{ messageId: "noLossOfPrecision" }]
 148         },
 149         {
 150             code: "var x = 0x20000000000001",
 151             errors: [{ messageId: "noLossOfPrecision" }]
 152         },
 153         {
 154             code: "var x = 0X20000000000001",
 155             errors: [{ messageId: "noLossOfPrecision" }]
 156         }
 157
 158     ]
 159 });