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Added constrainSize extension
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‎Sources/YCoreUI/Extensions/UIKit/UIView+constrainSize.swift‎

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//
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// UIView+constrainSize.swift
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// YCoreUI
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//
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// Created by Dharmik Ghelani on 17/10/22.
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// Copyright © 2022 Y Media Labs. All rights reserved.
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//
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import UIKit
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extension UIView {
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/// Constrain the receiving view with given size
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/// - Parameters:
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/// - size: size of view to constrain to
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/// - relation: relation to evaluate (towards sibling) (default `.equal`)
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/// - priority: constraint priority (default `.required`)
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/// - isActive: whether to activate the constraint or not (default `true`)
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/// - Returns: The created layout constraint
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@discardableResult public func constrainSize(
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_ size: CGSize,
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relatedBy relation: NSLayoutConstraint.Relation = .equal,
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priority: UILayoutPriority = .required,
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isActive: Bool = true
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) -> [NSLayoutConstraint.Attribute: NSLayoutConstraint] {
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let widthConstraint = constrain(
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.widthAnchor,
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relatedBy: relation,
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constant: size.width,
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priority: priority,
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isActive: isActive
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)
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let heightConstraint = constrain(
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.heightAnchor,
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relatedBy: relation,
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constant: size.height,
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priority: priority,
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isActive: isActive
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)
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return [.width: widthConstraint, .height: heightConstraint]
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}
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/// Constrain the receiving view with width and heigh
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/// - Parameters:
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/// - width: width of view to constrain to
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/// - height: height of view to constrain to
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/// - relation: relation to evaluate (towards sibling) (default `.equal`)
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/// - priority: constraint priority (default `.required`)
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/// - isActive: whether to activate the constraint or not (default `true`)
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/// - Returns: The created layout constraint
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@discardableResult public func constrainSize(
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width: CGFloat,
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height: CGFloat,
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relatedBy relation: NSLayoutConstraint.Relation = .equal,
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priority: UILayoutPriority = .required,
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isActive: Bool = true
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) -> [NSLayoutConstraint.Attribute: NSLayoutConstraint] {
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constrainSize(CGSize(width: width, height: height))
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}
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/// Constrain the receiving view with given dimension
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/// - Parameters:
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/// - dimension: dimension of view to constrain to
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/// - relation: relation to evaluate (towards sibling) (default `.equal`)
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/// - priority: constraint priority (default `.required`)
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/// - isActive: whether to activate the constraint or not (default `true`)
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/// - Returns: The created layout constraint
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@discardableResult public func constrainSize(
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_ dimension: CGFloat,
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relatedBy relation: NSLayoutConstraint.Relation = .equal,
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priority: UILayoutPriority = .required,
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isActive: Bool = true
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) -> [NSLayoutConstraint.Attribute: NSLayoutConstraint] {
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constrainSize(CGSize(width: dimension, height: dimension))
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}
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}

‎Tests/YCoreUITests/Extensions/UIKit/UIView+constrainSizeTests.swift‎

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//
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// UIView+constrainSizeTests.swift
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// YCoreUITests
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//
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// Created by Dharmik Ghelani on 17/10/22.
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// Copyright © 2022 Y Media Labs. All rights reserved.
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//
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import XCTest
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@testable import YCoreUI
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final class UIViewConstrainSizeTests: XCTestCase {
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private lazy var randomSize = {
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CGSize(
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width: self.randomFloat,
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height: self.randomFloat
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)
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}()
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private lazy var randomDimension: CGFloat = {
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randomFloat
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}()
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func testSize() {
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let sut = makeSUT()
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XCTAssert(sut.translatesAutoresizingMaskIntoConstraints)
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let sizeAttributes: [
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(NSLayoutConstraint.Attribute, CGFloat)
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] = [
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(.width, randomSize.width),
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(.height, randomSize.height)
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]
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let constraints = sut.constrainSize(randomSize)
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sizeAttributes.forEach {
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guard let constraint = constraints[$0.0] else {
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XCTFail("Expected to have constraint for give attribute")
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return
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}
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XCTAssertEqual(constraint.firstItem as? UIView, sut)
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XCTAssertEqual(constraint.firstAttribute, $0.0)
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XCTAssertNil(constraint.secondItem)
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XCTAssertEqual(constraint.secondAttribute, .notAnAttribute)
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XCTAssertEqual(constraint.multiplier, 1)
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XCTAssertEqual(constraint.constant, $0.1)
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XCTAssertEqual(constraint.priority, .required)
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XCTAssert(constraint.isActive)
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}
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}
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func testWidthAndHeight() {
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let sut = makeSUT()
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XCTAssert(sut.translatesAutoresizingMaskIntoConstraints)
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let sizeAttributes: [
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(NSLayoutConstraint.Attribute, CGFloat)
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] = [
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(.width, randomSize.width),
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(.height, randomSize.height)
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]
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let constraints = sut.constrainSize(width: randomSize.width, height: randomSize.height)
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sizeAttributes.forEach {
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guard let constraint = constraints[$0.0] else {
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XCTFail("Expected to have constraint for give attribute")
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return
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}
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XCTAssertEqual(constraint.firstItem as? UIView, sut)
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XCTAssertEqual(constraint.firstAttribute, $0.0)
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XCTAssertNil(constraint.secondItem)
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XCTAssertEqual(constraint.secondAttribute, .notAnAttribute)
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XCTAssertEqual(constraint.multiplier, 1)
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XCTAssertEqual(constraint.constant, $0.1)
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XCTAssertEqual(constraint.priority, .required)
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XCTAssert(constraint.isActive)
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}
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}
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func testDimension() {
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let sut = makeSUT()
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XCTAssert(sut.translatesAutoresizingMaskIntoConstraints)
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let randomDimension = randomFloat
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let sizeAttributes: [
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(NSLayoutConstraint.Attribute, CGFloat)
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] = [
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(.width, randomDimension),
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(.height, randomDimension)
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]
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let constraints = sut.constrainSize(randomDimension)
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sizeAttributes.forEach {
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guard let constraint = constraints[$0.0] else {
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XCTFail("Expected to have constraint for give attribute")
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return
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}
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XCTAssertEqual(constraint.firstItem as? UIView, sut)
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XCTAssertEqual(constraint.firstAttribute, $0.0)
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XCTAssertNil(constraint.secondItem)
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XCTAssertEqual(constraint.secondAttribute, .notAnAttribute)
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XCTAssertEqual(constraint.multiplier, 1)
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XCTAssertEqual(constraint.constant, $0.1)
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XCTAssertEqual(constraint.priority, .required)
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XCTAssert(constraint.isActive)
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}
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}
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}
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extension UIViewConstrainSizeTests {
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func makeSUT(
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file: StaticString = #filePath,
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line: UInt = #line
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) -> UIView {
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let sut = UIView()
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trackForMemoryLeak(sut, file: file, line: line)
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return sut
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}
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var randomFloat: CGFloat {
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CGFloat.random(in: 0...500)
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}
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}

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