SwiftLint/Tests/BuiltInRulesTests/AttributesRuleTests.swift

@testable import SwiftLintBuiltInRules
import TestHelpers

final class AttributesRuleTests: SwiftLintTestCase {
    func testAttributesWithAlwaysOnSameLine() {
        // Test with custom `always_on_same_line`
        let nonTriggeringExamples = [
            Example("@objc var x: String"),
            Example("@objc func foo()"),
            Example("@nonobjc\n func foo()"),
            Example("""
            class Foo {
                @objc private var object: RLMWeakObjectHandle?
                @objc private var property: RLMProperty?
            }
            """),
            Example("""
            @objc(XYZFoo) class Foo: NSObject {}
            """),
        ]
        let triggeringExamples = [
            Example("@objc\n ↓var x: String"),
            Example("@objc\n ↓func foo()"),
            Example("@nonobjc ↓func foo()"),
        ]

        let alwaysOnSameLineDescription = AttributesRule.description
            .with(triggeringExamples: triggeringExamples)
            .with(nonTriggeringExamples: nonTriggeringExamples)

        verifyRule(alwaysOnSameLineDescription,
                   ruleConfiguration: ["always_on_same_line": ["@objc"]])
    }

    func testAttributesWithAlwaysOnLineAbove() {
        // Test with custom `always_on_line_above`
        let nonTriggeringExamples = [
            Example("@objc\n var x: String"),
            Example("@objc\n func foo()"),
            Example("@nonobjc\n func foo()"),
        ]
        let triggeringExamples = [
            Example("@objc ↓var x: String"),
            Example("@objc ↓func foo()"),
            Example("@nonobjc ↓func foo()"),
        ]

        let alwaysOnNewLineDescription = AttributesRule.description
            .with(triggeringExamples: triggeringExamples)
            .with(nonTriggeringExamples: nonTriggeringExamples)

        verifyRule(alwaysOnNewLineDescription,
                   ruleConfiguration: ["always_on_line_above": ["@objc"]])
    }

    func testAttributesWithAttributesOnLineAboveButOnOtherDeclaration() {
        let nonTriggeringExamples = [
            Example("""
            @IBDesignable open class TagListView: UIView {
                @IBInspectable open dynamic var textColor: UIColor = UIColor.white {
                    didSet {}
                }
            }
            """),
            Example("""
            @objc public protocol TagListViewDelegate {
                @objc optional func tagDidSelect(_ title: String, sender: TagListView)
                @objc optional func tagDidDeselect(_ title: String, sender: TagListView)
            }
            """),
        ]

        let triggeringExamples = [
            Example("""
            @IBDesignable open class TagListView: UIView {
                @IBInspectable
                open dynamic ↓var textColor: UIColor = UIColor.white {
                    didSet {}
                }
            }
            """),
            Example("""
            @objc public protocol TagListViewDelegate {
                @objc
                optional ↓func tagDidSelect(_ title: String, sender: TagListView)
                @objc optional func tagDidDeselect(_ title: String, sender: TagListView)
            }
            """),
        ]

        let alwaysOnNewLineDescription = AttributesRule.description
            .with(triggeringExamples: triggeringExamples)
            .with(nonTriggeringExamples: nonTriggeringExamples)

        verifyRule(
            alwaysOnNewLineDescription,
            ruleConfiguration: [
                "always_on_same_line": [
                    "@discardableResult", "@objc", "@IBAction", "@IBDesignable",
                ],
            ]
        )
    }

    func testAttributesWithArgumentsAlwaysOnLineAboveFalse() {
        let nonTriggeringExamples = [
            Example("@Environment(\\.presentationMode) private var presentationMode")
        ]
        let triggeringExamples = [
            Example("""
            @Environment(\\.presentationMode)
            private ↓var presentationMode
            """),
        ]

        let argumentsAlwaysOnLineDescription = AttributesRule.description
            .with(triggeringExamples: triggeringExamples)
            .with(nonTriggeringExamples: nonTriggeringExamples)

        verifyRule(argumentsAlwaysOnLineDescription,
                   ruleConfiguration: ["attributes_with_arguments_always_on_line_above": false])
    }

    func testAttributesWithArgumentsAlwaysOnLineAboveTrue() {
        let nonTriggeringExamples = [
            Example("@Environment(\\.presentationMode)\nprivate var presentationMode")
        ]
        let triggeringExamples = [
            Example("@Environment(\\.presentationMode) private ↓var presentationMode")
        ]

        let argumentsAlwaysOnLineDescription = AttributesRule.description
            .with(triggeringExamples: triggeringExamples)
            .with(nonTriggeringExamples: nonTriggeringExamples)

        verifyRule(argumentsAlwaysOnLineDescription,
                   ruleConfiguration: ["attributes_with_arguments_always_on_line_above": true])
    }
}