SwiftLint/Tests/SwiftLintFrameworkTests/IdentifierNameRuleTests.swift

import SwiftLintFramework
import XCTest

class IdentifierNameRuleTests: XCTestCase {
    func testIdentifierName() {
        verifyRule(IdentifierNameRule.description)
    }

    func testIdentifierNameWithAllowedSymbols() {
        let baseDescription = IdentifierNameRule.description
        let nonTriggeringExamples = baseDescription.nonTriggeringExamples + [
            Example("let myLet$ = 0"),
            Example("let myLet% = 0"),
            Example("let myLet$% = 0"),
            Example("let _myLet = 0")
        ]
        let triggeringExamples = baseDescription.triggeringExamples.filter { !$0.code.contains("_") }
        let description = baseDescription.with(nonTriggeringExamples: nonTriggeringExamples,
                                               triggeringExamples: triggeringExamples)
        verifyRule(description, ruleConfiguration: ["allowed_symbols": ["$", "%", "_"]])
    }

    func testIdentifierNameWithAllowedSymbolsAndViolation() {
        let baseDescription = IdentifierNameRule.description
        let triggeringExamples = [
            Example("↓let my_Let$ = 0")
        ]

        let description = baseDescription.with(triggeringExamples: triggeringExamples)
        verifyRule(description, ruleConfiguration: ["allowed_symbols": ["$", "%"]])
    }

    func testIdentifierNameWithIgnoreStartWithLowercase() {
        let baseDescription = IdentifierNameRule.description
        let triggeringExamplesToRemove = [
            Example("↓let MyLet = 0"),
            Example("enum Foo { case ↓MyEnum }")
        ]
        let nonTriggeringExamples = baseDescription.nonTriggeringExamples +
            triggeringExamplesToRemove.removingViolationMarkers()
        let triggeringExamples = baseDescription.triggeringExamples
            .filter { !triggeringExamplesToRemove.contains($0) }

        let description = baseDescription.with(nonTriggeringExamples: nonTriggeringExamples)
                                         .with(triggeringExamples: triggeringExamples)

        verifyRule(description, ruleConfiguration: ["validates_start_with_lowercase": false])
    }

    func testLinuxCrashOnEmojiNames() {
        let baseDescription = IdentifierNameRule.description
        let triggeringExamples = [
            Example("let 👦🏼 = \"👦🏼\"")
        ]

        let description = baseDescription.with(triggeringExamples: triggeringExamples)
        verifyRule(description, ruleConfiguration: ["allowed_symbols": ["$", "%"]])
    }
}