/
no-magic-numbers.js
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/
no-magic-numbers.js
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/**
* @fileoverview Tests for no-magic-numbers rule.
* @author Vincent Lemeunier
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-magic-numbers"),
RuleTester = require("../../../lib/testers/rule-tester");
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("no-magic-numbers", rule, {
valid: [
"var x = parseInt(y, 10);",
"var x = parseInt(y, -10);",
"var x = Number.parseInt(y, 10);",
{
code: "const foo = 42;",
env: { es6: true }
},
{
code: "var foo = 42;",
options: [{
enforceConst: false
}],
env: { es6: true }
},
"var foo = -42;",
{
code: "var foo = 0 + 1 - 2 + -2;",
options: [{
ignore: [0, 1, 2, -2]
}]
},
{
code: "var foo = 0 + 1 + 2 + 3 + 4;",
options: [{
ignore: [0, 1, 2, 3, 4]
}]
},
"var foo = { bar:10 }",
{
code: "setTimeout(function() {return 1;}, 0);",
options: [{
ignore: [0, 1]
}]
},
{
code: "var data = ['foo', 'bar', 'baz']; var third = data[3];",
options: [{
ignoreArrayIndexes: true
}]
},
{
code: "var a = <input maxLength={10} />;",
parserOptions: {
ecmaFeatures: {
jsx: true
}
}
},
{
code: "var a = <div objectProp={{ test: 1}}></div>;",
parserOptions: {
ecmaFeatures: {
jsx: true
}
}
}
],
invalid: [
{
code: "var foo = 42",
options: [{
enforceConst: true
}],
env: { es6: true },
errors: [{ messageId: "useConst" }]
},
{
code: "var foo = 0 + 1;",
errors: [
{ messageId: "noMagic", data: { raw: "0" } },
{ messageId: "noMagic", data: { raw: "1" } }
]
},
{
code: "a = a + 5;",
errors: [
{ messageId: "noMagic", data: { raw: "5" } }
]
},
{
code: "a += 5;",
errors: [
{ messageId: "noMagic", data: { raw: "5" } }
]
},
{
code: "var foo = 0 + 1 + -2 + 2;",
errors: [
{ messageId: "noMagic", data: { raw: "0" } },
{ messageId: "noMagic", data: { raw: "1" } },
{ messageId: "noMagic", data: { raw: "-2" } },
{ messageId: "noMagic", data: { raw: "2" } }
]
},
{
code: "var foo = 0 + 1 + 2;",
options: [{
ignore: [0, 1]
}],
errors: [
{ messageId: "noMagic", data: { raw: "2" } }
]
},
{
code: "var foo = { bar:10 }",
options: [{
detectObjects: true
}],
errors: [
{ messageId: "noMagic", data: { raw: "10" } }
]
}, {
code: "console.log(0x1A + 0x02); console.log(071);",
errors: [
{ messageId: "noMagic", data: { raw: "0x1A" } },
{ messageId: "noMagic", data: { raw: "0x02" } },
{ messageId: "noMagic", data: { raw: "071" } }
]
}, {
code: "var stats = {avg: 42};",
options: [{
detectObjects: true
}],
errors: [
{ messageId: "noMagic", data: { raw: "42" } }
]
}, {
code: "var colors = {}; colors.RED = 2; colors.YELLOW = 3; colors.BLUE = 4 + 5;",
errors: [
{ messageId: "noMagic", data: { raw: "4" } },
{ messageId: "noMagic", data: { raw: "5" } }
]
},
{
code: "function getSecondsInMinute() {return 60;}",
errors: [
{ message: "No magic number: 60." }
]
},
{
code: "function getNegativeSecondsInMinute() {return -60;}",
errors: [
{ messageId: "noMagic", data: { raw: "-60" } }
]
},
{
code: "var Promise = require('bluebird');\n" +
"var MINUTE = 60;\n" +
"var HOUR = 3600;\n" +
"const DAY = 86400;\n" +
"var configObject = {\n" +
"key: 90,\n" +
"another: 10 * 10,\n" +
"10: 'an \"integer\" key'\n" +
"};\n" +
"function getSecondsInDay() {\n" +
" return 24 * HOUR;\n" +
"}\n" +
"function getMillisecondsInDay() {\n" +
"return (getSecondsInDay() *\n" +
"(1000)\n" +
");\n" +
"}\n" +
"function callSetTimeoutZero(func) {\n" +
"setTimeout(func, 0);\n" +
"}\n" +
"function invokeInTen(func) {\n" +
"setTimeout(func, 10);\n" +
"}\n",
env: { es6: true },
errors: [
{ messageId: "noMagic", data: { raw: "10" }, line: 7 },
{ messageId: "noMagic", data: { raw: "10" }, line: 7 },
{ messageId: "noMagic", data: { raw: "24" }, line: 11 },
{ messageId: "noMagic", data: { raw: "1000" }, line: 15 },
{ messageId: "noMagic", data: { raw: "0" }, line: 19 },
{ messageId: "noMagic", data: { raw: "10" }, line: 22 }
]
},
{
code: "var data = ['foo', 'bar', 'baz']; var third = data[3];",
options: [{}],
errors: [{
messageId: "noMagic", data: { raw: "3" }, line: 1
}]
},
{
code: "var a = <div arrayProp={[1,2,3]}></div>;",
parserOptions: {
ecmaFeatures: {
jsx: true
}
},
errors: [
{ messageId: "noMagic", data: { raw: "1" }, line: 1 },
{ messageId: "noMagic", data: { raw: "2" }, line: 1 },
{ messageId: "noMagic", data: { raw: "3" }, line: 1 }
]
},
{
code: "var min, max, mean; min = 1; max = 10; mean = 4;",
options: [{}],
errors: [
{ messageId: "noMagic", data: { raw: "1" }, line: 1 },
{ messageId: "noMagic", data: { raw: "10" }, line: 1 },
{ messageId: "noMagic", data: { raw: "4" }, line: 1 }
]
}
]
});