Stub asynchronous REST call

graemer957 · Nov 25, 2016 · 025d1d4 · 025d1d4
1 parent 1cf0d35
commit 025d1d4
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Showing 3 changed files with 49 additions and 5 deletions.
diff --git a/UI Testing.xcodeproj/project.pbxproj b/UI Testing.xcodeproj/project.pbxproj
@@ -12,6 +12,7 @@
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 		AA1E29481DE8E24100B0CC3A /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = AA1E29461DE8E24100B0CC3A /* LaunchScreen.storyboard */; };
+		AA99E4F31DE8E51900C83A69 /* API.swift in Sources */ = {isa = PBXBuildFile; fileRef = AA99E4F21DE8E51900C83A69 /* API.swift */; };
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@@ -22,6 +23,7 @@
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 		AA1E29491DE8E24100B0CC3A /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		AA99E4F21DE8E51900C83A69 /* API.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = API.swift; sourceTree = "<group>"; };
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@@ -54,12 +56,13 @@
 		AA1E293C1DE8E24100B0CC3A /* UI Testing */ = {
 			isa = PBXGroup;
 			children = (
+				AA99E4F21DE8E51900C83A69 /* API.swift */,
 				AA1E293D1DE8E24100B0CC3A /* AppDelegate.swift */,
-				AA1E293F1DE8E24100B0CC3A /* ViewController.swift */,
-				AA1E29411DE8E24100B0CC3A /* Main.storyboard */,
 				AA1E29441DE8E24100B0CC3A /* Assets.xcassets */,
-				AA1E29461DE8E24100B0CC3A /* LaunchScreen.storyboard */,
 				AA1E29491DE8E24100B0CC3A /* Info.plist */,
+				AA1E29461DE8E24100B0CC3A /* LaunchScreen.storyboard */,
+				AA1E29411DE8E24100B0CC3A /* Main.storyboard */,
+				AA1E293F1DE8E24100B0CC3A /* ViewController.swift */,
 			);
 			path = "UI Testing";
 			sourceTree = "<group>";
@@ -138,6 +141,7 @@
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 			files = (
 				AA1E29401DE8E24100B0CC3A /* ViewController.swift in Sources */,
+				AA99E4F31DE8E51900C83A69 /* API.swift in Sources */,
 				AA1E293E1DE8E24100B0CC3A /* AppDelegate.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -302,6 +306,7 @@
 				AA1E294E1DE8E24100B0CC3A /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

diff --git a/UI Testing/API.swift b/UI Testing/API.swift
@@ -0,0 +1,34 @@
+//
+//  API.swift
+//  UI Testing
+//
+//  Created by Graeme Read on 25/11/2016.
+//  Copyright © 2016 Graeme Read. All rights reserved.
+//
+
+import Foundation
+
+
+struct API {
+
+    // MARK: - Structs
+    struct Constants {
+        static let delay = 4
+    }
+
+
+    // MARK: - Instance methods
+    func retrieveData(completion: @escaping (String) -> Void) {
+        delay(Constants.delay) {
+            completion("Hello World")
+        }
+    }
+
+
+    // MARK: - Private methods
+    private func delay(_ delay: Int, block: @escaping () -> Void) {
+        let delay = DispatchTime.now() + Double(Int64(UInt64(delay) * NSEC_PER_SEC)) / Double(NSEC_PER_SEC)
+        DispatchQueue.main.asyncAfter(deadline: delay, execute: block)
+    }
+
+}
diff --git a/UI Testing/ViewController.swift b/UI Testing/ViewController.swift
@@ -14,6 +14,7 @@ class ViewController: UIViewController {
     // MARK: - Properties
     @IBOutlet private weak var label: UILabel!
     @IBOutlet private weak var spinner: UIActivityIndicatorView!
+    private let api = API()
 
 
     // MARK: - UIViewController
@@ -25,8 +26,12 @@ class ViewController: UIViewController {
     // MARK: - IBActions
     @IBAction
     private func doSomething() {
-        label.text = "Hello world"
+        spinner.startAnimating()
+        api.retrieveData { [weak self] text in
+            self?.label.text = text
+
+            self?.spinner.stopAnimating()
+        }
     }
 
-
 }