eslint-plugin-google-camelcase/test/lib/rules/google-camelcase.js

enforce camelcase names but allow opt_ prefix

/**
 * @fileoverview Tests for google-camelcase rule.
 * @author Gregg Tavares (but it's just a modified version of camelcase by Nicholas C. Zakas)
 */

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------

var linter = require("eslint").linter;
var ESLintTester = require("eslint-tester");
var eslintTester = new ESLintTester(linter);

//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------

eslintTester.addRuleTest("lib/rules/google-camelcase", {
    valid: [
        "firstName = \"Nicholas\"",
        "FIRST_NAME = \"Nicholas\"",
        "__myPrivateVariable = \"Patrick\"",
        "myPrivateVariable_ = \"Patrick\"",
        "function doSomething(){}",
        "do_something()",
        "foo.do_something()",
        "var foo = bar.baz_boom;",
        "var foo = bar.baz_boom.something;",
        "foo.boom_pow.qux = bar.baz_boom.something;",
        "if (bar.baz_boom) {}",
        "var obj = { key: foo.bar_baz };",
        "var arr = [foo.bar_baz];",
        "[foo.bar_baz]",
        "var arr = [foo.bar_baz.qux];",
        "[foo.bar_baz.nesting]",
        "if (foo.bar_baz === boom.bam_pow) { [foo.baz_boom] }",
        "var a = opt_test;",
        "var args = var_args;"
    ],
    invalid: [
        {
            code: "first_name = \"Nicholas\"",
            errors: [
                {
                    message: "Identifier 'first_name' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "__private_first_name = \"Patrick\"",
            errors: [
                {
                    message: "Identifier '__private_first_name' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "function foo_bar(){}",
            errors: [
                {
                    message: "Identifier 'foo_bar' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "obj.foo_bar = function(){};",
            errors: [
                {
                    message: "Identifier 'foo_bar' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "bar_baz.foo = function(){};",
            errors: [
                {
                    message: "Identifier 'bar_baz' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "[foo_bar.baz]",
            errors: [
                {
                    message: "Identifier 'foo_bar' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "if (foo.bar_baz === boom.bam_pow) { [foo_bar.baz] }",
            errors: [
                {
                    message: "Identifier 'foo_bar' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "foo.bar_baz = boom.bam_pow",
            errors: [
                {
                    message: "Identifier 'bar_baz' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "var foo = { bar_baz: boom.bam_pow }",
            errors: [
                {
                    message: "Identifier 'bar_baz' is not in camel case.",
                    type: "Identifier"
                }
            ]
        },
        {
            code: "foo.qux.boom_pow = { bar: boom.bam_pow }",
            errors: [
                {
                    message: "Identifier 'boom_pow' is not in camel case.",
                    type: "Identifier"
                }
            ]
        }

    ]
});