added tests for injecting utils

Author: martinmitrevski

StreamChatSwiftUI.xcodeproj/project.pbxproj

@@ -215,6 +215,8 @@
 		84C94D54275A1380007FE2B9 /* DateUtils_Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84C94D53275A1380007FE2B9 /* DateUtils_Tests.swift */; };
 		84C94D56275A1AE1007FE2B9 /* StringExtensions_Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84C94D55275A1AE1007FE2B9 /* StringExtensions_Tests.swift */; };
 		84C94D58275A1B89007FE2B9 /* MessageTypeResolver_Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84C94D57275A1B89007FE2B9 /* MessageTypeResolver_Tests.swift */; };
+		84C94D5A275A2E43007FE2B9 /* StreamChat_Utils_Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84C94D59275A2E43007FE2B9 /* StreamChat_Utils_Tests.swift */; };
+		84C94D5C275A2E9F007FE2B9 /* StreamChatUtilsMocks.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84C94D5B275A2E9F007FE2B9 /* StreamChatUtilsMocks.swift */; };
 		84EDBC37274FE5CD0057218D /* Localizable.strings in Resources */ = {isa = PBXBuildFile; fileRef = 84EDBC36274FE5CD0057218D /* Localizable.strings */; };
 /* End PBXBuildFile section */
 
@@ -460,6 +462,8 @@
 		84C94D53275A1380007FE2B9 /* DateUtils_Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DateUtils_Tests.swift; sourceTree = "<group>"; };
 		84C94D55275A1AE1007FE2B9 /* StringExtensions_Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StringExtensions_Tests.swift; sourceTree = "<group>"; };
 		84C94D57275A1B89007FE2B9 /* MessageTypeResolver_Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MessageTypeResolver_Tests.swift; sourceTree = "<group>"; };
+		84C94D59275A2E43007FE2B9 /* StreamChat_Utils_Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StreamChat_Utils_Tests.swift; sourceTree = "<group>"; };
+		84C94D5B275A2E9F007FE2B9 /* StreamChatUtilsMocks.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StreamChatUtilsMocks.swift; sourceTree = "<group>"; };
 		84EDBC36274FE5CD0057218D /* Localizable.strings */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.strings; path = Localizable.strings; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -927,6 +931,7 @@
 				84C94D29275796D0007FE2B9 /* MockNetworkURLProtocol.swift */,
 				84C94D2B275796F7007FE2B9 /* RequestRecorderURLProtocol.swift */,
 				84C94D452757D1CA007FE2B9 /* ImageLoader_Mock.swift */,
+				84C94D5B275A2E9F007FE2B9 /* StreamChatUtilsMocks.swift */,
 			);
 			path = Mocks;
 			sourceTree = "<group>";
@@ -978,6 +983,7 @@
 			children = (
 				84C94D53275A1380007FE2B9 /* DateUtils_Tests.swift */,
 				84C94D55275A1AE1007FE2B9 /* StringExtensions_Tests.swift */,
+				84C94D59275A2E43007FE2B9 /* StreamChat_Utils_Tests.swift */,
 			);
 			path = Utils;
 			sourceTree = "<group>";
@@ -1312,6 +1318,7 @@
 				84C94D3C27579BB0007FE2B9 /* AssertAsync.swift in Sources */,
 				84C94D0727578BF2007FE2B9 /* RandomDispatchQueue.swift in Sources */,
 				84C94D2227579359007FE2B9 /* AnyEndpoint.swift in Sources */,
+				84C94D5C275A2E9F007FE2B9 /* StreamChatUtilsMocks.swift in Sources */,
 				84C94D1227578BF2007FE2B9 /* JSONEncoder+Extensions.swift in Sources */,
 				84C94D24275794D3007FE2B9 /* InternetConnectionMock.swift in Sources */,
 				84C94CDD27578B92007FE2B9 /* MemberPayload.swift in Sources */,
@@ -1347,6 +1354,7 @@
 				84C94D0427578BF2007FE2B9 /* TestError.swift in Sources */,
 				84C94D0A27578BF2007FE2B9 /* TestDataModel.xcdatamodeld in Sources */,
 				84C94D422757C16D007FE2B9 /* ChatChannelListTestHelpers.swift in Sources */,
+				84C94D5A275A2E43007FE2B9 /* StreamChat_Utils_Tests.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

StreamChatSwiftUITests/Infrastructure/Mocks/StreamChatUtilsMocks.swift

@@ -0,0 +1,34 @@
+//
+// Copyright © 2021 Stream.io Inc. All rights reserved.
+//
+
+import StreamChatSwiftUI
+import UIKit
+
+/// Mock implementation of `VideoPreviewLoader`.
+class VideoPreviewLoader_Mock: VideoPreviewLoader {
+    
+    var loadPreviewVideoCalled = false
+    
+    func loadPreviewForVideo(at url: URL, completion: @escaping (Result<UIImage, Error>) -> Void) {
+        loadPreviewVideoCalled = true
+    }    
+    
+}
+
+/// Mock implementation of `ImageLoading`.
+class ImageLoaderUtils_Mock: ImageLoading {
+    
+    var loadImageCalled = false
+    
+    func loadImage(
+        url: URL?,
+        imageCDN: ImageCDN,
+        resize: Bool,
+        preferredSize: CGSize?,
+        completion: @escaping ((Result<UIImage, Error>) -> Void)
+    ) {
+        loadImageCalled = true
+    }
+
+}

StreamChatSwiftUITests/Tests/Utils/StreamChat_Utils_Tests.swift

@@ -0,0 +1,60 @@
+//
+// Copyright © 2021 Stream.io Inc. All rights reserved.
+//
+
+import Foundation
+@testable import StreamChat
+@testable import StreamChatSwiftUI
+import XCTest
+
+class StreamChat_Utils_Tests: XCTestCase {
+    
+    private let testURL = URL(string: "https://example.com")!
+    
+    var streamChat: StreamChat!
+    
+    @Injected(\.utils) var utils
+    
+    private var chatClient: ChatClient = {
+        let client = ChatClient.mock()
+        client.currentUserId = .unique
+        return client
+    }()
+    
+    override func setUp() {
+        let utils = Utils(
+            videoPreviewLoader: VideoPreviewLoader_Mock(),
+            imageLoader: ImageLoaderUtils_Mock()
+        )
+        streamChat = StreamChat(chatClient: chatClient, utils: utils)
+    }
+
+    func test_streamChatUtils_injectVideoPreviewLoader() {
+        // Given
+        let videoPreviewLoader = utils.videoPreviewLoader as! VideoPreviewLoader_Mock
+        
+        // When
+        videoPreviewLoader.loadPreviewForVideo(at: testURL, completion: { _ in })
+        
+        // Then
+        XCTAssert(videoPreviewLoader.loadPreviewVideoCalled == true)
+    }
+    
+    func test_streamChatUtils_injectImageLoader() {
+        // Given
+        let imageLoader = utils.imageLoader as! ImageLoaderUtils_Mock
+        
+        // When
+        imageLoader.loadImage(
+            url: testURL,
+            imageCDN: utils.imageCDN,
+            resize: true,
+            preferredSize: nil,
+            completion: {_ in }
+        )
+        
+        // Then
+        XCTAssert(imageLoader.loadImageCalled == true)
+    }
+    
+}