//
//  UITextField+RxTests.swift
//  Tests
//
//  Created by Krunoslav Zaher on 5/13/16.
//  Copyright © 2016 Krunoslav Zaher. All rights reserved.
//

import UIKit
import RxSwift
import RxCocoa
import XCTest

// UITextField
final class UITextFieldTests : RxTest {
    
    func test_completesOnDealloc() {
        // because of leak in iOS 11.2
        if #available(iOS 11.3, tvOS 11.3, *) {
            ensurePropertyDeallocated({ UITextField() }, "a", comparer: { $0 == $1 }) { (view: UITextField) in view.rx.text }
            ensurePropertyDeallocated({ UITextField() }, "a", comparer: { $0 == $1 }) { (view: UITextField) in view.rx.value }
            ensurePropertyDeallocated({ UITextField() }, "a".enrichedWithTextFieldAttributes, comparer: { $0 == $1 }) { (view: UITextField) in view.rx.attributedText }
        }
    }
    
    func test_settingTextDoesntClearMarkedText() {
        // because of leak in iOS 11.2
        if #available(iOS 11.3, tvOS 11.3, *) {
            let textField = UITextFieldSubclass(frame: CGRect.zero)
            textField.text = "Text1"
            textField.didSetText = false
            textField.rx.text.on(.next("Text1"))
            XCTAssertTrue(!textField.didSetText)
            textField.rx.text.on(.next("Text2"))
            XCTAssertTrue(textField.didSetText)
        }
    }
    
    func test_attributedTextObserver() {
        // because of leak in iOS 11.2
        if #available(iOS 11.3, tvOS 11.3, *) {
            let textField = UITextField()
            XCTAssertEqual(textField.attributedText, "".enrichedWithTextFieldAttributes)
            let attributedText = "Hello!".enrichedWithTextFieldAttributes
            textField.rx.attributedText.onNext(attributedText)
            XCTAssertEqual(textField.attributedText!, attributedText)
        }
    }
}

private extension String {
    var enrichedWithTextFieldAttributes: NSAttributedString {
        let tf = UITextField()
        tf.attributedText = NSAttributedString(string: self)
        return tf.attributedText!
    }
}

final class UITextFieldSubclass : UITextField {
    var didSetText = false
    
    override var text: String? {
        get {
            return super.text
        }
        set {
            didSetText = true
            super.text = newValue
        }
    }
    
}