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Added tests for ColorWheelView

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This commit is contained in:
Jonathan Cardasis 2019-04-12 00:21:47 -04:00
parent 5a6d7b5e27
commit 65eab137b3
2 changed files with 149 additions and 0 deletions
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12
ChromaColorPicker.xcodeproj/project.pbxproj
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@ -17,6 +17,7 @@
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FC1BD8C22207D7B700817AF3 /* ChromaColorPicker.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3503B82F1F2689BC00750356 /* ChromaColorPicker.framework */; };
FC4387C422603AE900F739F1 /* ColorWheelViewTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42AB226038A400BE2FF9 /* ColorWheelViewTests.swift */; };
FCCA42A5226022A800BE2FF9 /* ColorWheelView.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42A4226022A800BE2FF9 /* ColorWheelView.swift */; };
FCCA42A7226023F000BE2FF9 /* ChromaColorHandle.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42A6226023F000BE2FF9 /* ChromaColorHandle.swift */; };
FCCA42AA2260329900BE2FF9 /* UIKit+DropShadow.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42A92260329900BE2FF9 /* UIKit+DropShadow.swift */; };
@ -77,6 +78,7 @@
FCCA42A4226022A800BE2FF9 /* ColorWheelView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ColorWheelView.swift; sourceTree = "<group>"; };
FCCA42A6226023F000BE2FF9 /* ChromaColorHandle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChromaColorHandle.swift; sourceTree = "<group>"; };
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FCCA42AB226038A400BE2FF9 /* ColorWheelViewTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ColorWheelViewTests.swift; sourceTree = "<group>"; };
FCEA4E262235AAA200C0A1B6 /* ChromaColorPicker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChromaColorPicker.swift; sourceTree = "<group>"; };
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@ -157,7 +159,9 @@
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FCCA42AD226038BD00BE2FF9 /* Extensions */,
FC1BD8BF2207D7B700817AF3 /* ChromaColorPickerTests.swift */,
FCCA42AB226038A400BE2FF9 /* ColorWheelViewTests.swift */,
FC1BD8C12207D7B700817AF3 /* Info.plist */,
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path = Tests;
@ -184,6 +188,13 @@
path = Extensions;
sourceTree = "<group>";
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@ -353,6 +364,7 @@
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files = (
FC1BD8C02207D7B700817AF3 /* ChromaColorPickerTests.swift in Sources */,
FC4387C422603AE900F739F1 /* ColorWheelViewTests.swift in Sources */,
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runOnlyForDeploymentPostprocessing = 0;
};

137
Tests/ColorWheelViewTests.swift Normal file
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@ -0,0 +1,137 @@
//
// ColorWheelTests.swift
// ChromaColorPickerTests
//
// Created by Jon Cardasis on 4/11/19.
// Copyright © 2019 Jonathan Cardasis. All rights reserved.
//
import XCTest
@testable import ChromaColorPicker
class ColorWheelViewTests: XCTestCase {
var subject: ColorWheelView!
override func setUp() {
subject = ColorWheelView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
}
func testBackgroundIsClear() {
XCTAssertEqual(subject.backgroundColor, .clear)
}
func testImageViewUsesAspectFit() {
XCTAssertEqual(subject.imageView.contentMode, .scaleAspectFit)
}
func testLayerCornerRadiusUpdatesDuringLayout() {
// Given
subject.frame = CGRect(x: 0, y: 0, width: 200, height: 0)
// When
subject.layoutSubviews()
// Then
XCTAssertEqual(subject.layer.cornerRadius, subject.radius)
}
func testRadiusIfHalfOfWidthWhenWidthIsLargestDimension() {
// Given, When
subject.frame = CGRect(x: 0, y: 0, width: 200, height: 0)
// Then
XCTAssertEqual(subject.radius, 100)
}
func testRadiusIfHalfOfHeightWhenHeightIsLargestDimension() {
// Given, When
subject.frame = CGRect(x: 0, y: 0, width: 0, height: 200)
// Then
XCTAssertEqual(subject.radius, 100)
}
func testColorWheelImageIsGeneratedEveryLayoutCycle() {
// Given
let width: CGFloat = 200.0
let screenScalar: CGFloat = UIScreen.main.scale
let expectedFinalSize = CGSize(width: width * screenScalar, height: width * screenScalar)
// When
subject.layoutSubviews()
let firstImage = subject.imageView.image!
subject.frame = CGRect(x: 0, y: 0, width: width, height: width * 2.0)
subject.layoutSubviews()
let secondImage = subject.imageView.image!
// Then
XCTAssertNotEqual(firstImage, secondImage)
XCTAssertEqual(secondImage.size, expectedFinalSize)
}
func testPixelColorShouldReturnNilForPointOutsideBounds() {
// Given, When
let testPoint = CGPoint(x: -100, y: -100)
// Then
XCTAssertNil(subject.pixelColor(at: testPoint))
}
func testPixelColorShouldReturnNilForPointInBoundsButOutsideRadius() {
// Given, When
let testPoint = CGPoint(x: 0, y: 0)
// Then
XCTAssertNil(subject.pixelColor(at: testPoint))
}
func testPixelColorShouldBeRedAtMaxXMidY() {
// Given, When
let size = subject.frame.size
// Note: Due to the wheel being HUE, any angle will share the same value, therefore
// we can safely inset the width to compensate for any color smoothing at the edges.
let testPoint = CGPoint(x: size.width - 25, y: size.height / 2.0)
let (expectedRedValue, _, _) = UIColor.red.rgbValues
let vc = UIViewController()
vc.view.addSubview(subject)
vc.beginAppearanceTransition(true, animated: false)
vc.endAppearanceTransition()
// When
let (actualRedValue, _, _) = subject.pixelColor(at: testPoint)!.rgbValues
// Then
XCTAssertEqual(actualRedValue, expectedRedValue, accuracy: 0.001)
}
func testPixelColorShouldBeWhiteAtTheCenter() {
// Given, When
let size = subject.frame.size
let testPoint = CGPoint(x: size.width / 2.0, y: size.height / 2.0)
let expectedColorValues = UIColor.white.rgbValues
let vc = UIViewController()
vc.view.addSubview(subject)
vc.beginAppearanceTransition(true, animated: false)
vc.endAppearanceTransition()
// When
let actualColorValues = subject.pixelColor(at: testPoint)!.rgbValues
// Then
XCTAssertEqual(actualColorValues.red, expectedColorValues.red, accuracy: 0.005)
XCTAssertEqual(actualColorValues.green, expectedColorValues.green, accuracy: 0.005)
XCTAssertEqual(actualColorValues.blue, expectedColorValues.blue, accuracy: 0.005)
}
}
private extension UIColor {
var rgbValues: (red: CGFloat, green: CGFloat, blue: CGFloat) {
var red: CGFloat = 0
var green: CGFloat = 0
var blue: CGFloat = 0
getRed(&red, green: &green, blue: &blue, alpha: nil)
return (red, green, blue)
}
}