/
no-inner-declarations.js
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/
no-inner-declarations.js
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/**
* @fileoverview Tests for no-inner-declarations rule.
* @author Brandon Mills
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-inner-declarations"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("no-inner-declarations", rule, {
// Examples of code that should not trigger the rule
valid: [
"function doSomething() { }",
"function doSomething() { function somethingElse() { } }",
"(function() { function doSomething() { } }());",
"if (test) { var fn = function() { }; }",
"if (test) { var fn = function expr() { }; }",
"function decl() { var fn = function expr() { }; }",
"function decl(arg) { var fn; if (arg) { fn = function() { }; } }",
{ code: "var x = {doSomething() {function doSomethingElse() {}}}", parserOptions: { ecmaVersion: 6 } },
{ code: "function decl(arg) { var fn; if (arg) { fn = function expr() { }; } }", parserOptions: { ecmaVersion: 6 } },
"function decl(arg) { var fn; if (arg) { fn = function expr() { }; } }",
"if (test) { var foo; }",
{ code: "if (test) { let x = 1; }", options: ["both"], parserOptions: { ecmaVersion: 6 } },
{ code: "if (test) { const x = 1; }", options: ["both"], parserOptions: { ecmaVersion: 6 } },
"function doSomething() { while (test) { var foo; } }",
{ code: "var foo;", options: ["both"] },
{ code: "var foo = 42;", options: ["both"] },
{ code: "function doSomething() { var foo; }", options: ["both"] },
{ code: "(function() { var foo; }());", options: ["both"] },
{ code: "foo(() => { function bar() { } });", parserOptions: { ecmaVersion: 6 } },
{ code: "var fn = () => {var foo;}", options: ["both"], parserOptions: { ecmaVersion: 6 } },
{
code: "var x = {doSomething() {var foo;}}",
options: ["both"],
parserOptions: { ecmaVersion: 6 }
},
{
code: "export var foo;",
options: ["both"],
parserOptions: { sourceType: "module", ecmaVersion: 6 }
},
{
code: "export function bar() {}",
options: ["both"],
parserOptions: { sourceType: "module", ecmaVersion: 6 }
},
{
code: "export default function baz() {}",
options: ["both"],
parserOptions: { sourceType: "module", ecmaVersion: 6 }
},
{
code: "exports.foo = () => {}",
options: ["both"],
parserOptions: { ecmaVersion: 6 }
},
{
code: "exports.foo = function(){}",
options: ["both"]
},
{
code: "module.exports = function foo(){}",
options: ["both"]
},
{
code: "class C { method() { function foo() {} } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { method() { var x; } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { function foo() {} } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { var x; } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 }
}
],
// Examples of code that should trigger the rule
invalid: [
{
code: "if (test) { function doSomething() { } }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "program"
},
type: "FunctionDeclaration"
}]
}, {
code: "if (foo) var a; ",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "program"
},
type: "VariableDeclaration"
}]
}, {
code: "if (foo) /* some comments */ var a; ",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "program"
},
type: "VariableDeclaration"
}]
}, {
code: "if (foo){ function f(){ if(bar){ var a; } } }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "program"
},
type: "FunctionDeclaration"
}, {
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
}, {
code: "if (foo) function f(){ if(bar) var a; } ",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "program"
},
type: "FunctionDeclaration"
}, {
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
}, {
code: "if (foo) { var fn = function(){} } ",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "program"
},
type: "VariableDeclaration"
}]
},
{
code: "if (foo) function f(){} ",
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "program"
},
type: "FunctionDeclaration"
}]
},
{
code: "function bar() { if (foo) function f(){}; }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "function body"
},
type: "FunctionDeclaration"
}]
},
{
code: "function bar() { if (foo) var a; }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
},
{
code: "if (foo){ var a; }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "program"
},
type: "VariableDeclaration"
}]
}, {
code: "function doSomething() { do { function somethingElse() { } } while (test); }",
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "function body"
},
type: "FunctionDeclaration"
}]
}, {
code: "(function() { if (test) { function doSomething() { } } }());",
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "function body"
},
type: "FunctionDeclaration"
}]
}, {
code: "while (test) { var foo; }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "program"
},
type: "VariableDeclaration"
}]
}, {
code: "function doSomething() { if (test) { var foo = 42; } }",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
}, {
code: "(function() { if (test) { var foo; } }());",
options: ["both"],
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
}, {
code: "const doSomething = () => { if (test) { var foo = 42; } }",
options: ["both"],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
}, {
code: "class C { method() { if(test) { var foo; } } }",
options: ["both"],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "function body"
},
type: "VariableDeclaration"
}]
}, {
code: "class C { static { if (test) { function foo() {} } } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "function",
body: "class static block body"
},
type: "FunctionDeclaration"
}]
}, {
code: "class C { static { if (test) { var foo; } } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "class static block body"
},
type: "VariableDeclaration"
}]
}, {
code: "class C { static { if (test) { if (anotherTest) { var foo; } } } }",
options: ["both"],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "moveDeclToRoot",
data: {
type: "variable",
body: "class static block body"
},
type: "VariableDeclaration"
}]
}
]
});