Network debugging

Gemini.xcodeproj/project.pbxproj

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+			remoteInfo = GeminiRenderer;
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 			);
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@@ -165,6 +231,22 @@
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@@ -176,7 +258,10 @@
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 				D62664B624BBF26A00DF9B88 /* GeminiFormatTests */,
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 				D62664B024BBF26A00DF9B88 /* GeminiFormatTests.xctest */,
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@@ -253,12 +340,43 @@
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 			children = (
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 				D62664B924BBF26A00DF9B88 /* Info.plist */,
 			);
 			path = GeminiFormatTests;
 			sourceTree = "<group>";
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+				D62664EB24BC0B4D00DF9B88 /* DocumentView.swift */,
+				D664673724BD086F00B0B741 /* RenderingBlockView.swift */,
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+				D62664DF24BC081B00DF9B88 /* Info.plist */,
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 			dependencies = (
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 				D62664BC24BBF26A00DF9B88 /* PBXTargetDependency */,
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 			name = Gemini;
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@@ -375,6 +502,45 @@
 			productReference = D62664B024BBF26A00DF9B88 /* GeminiFormatTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
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@@ -403,6 +569,14 @@
 						CreatedOnToolsVersion = 12.0;
 						TestTargetID = D626645A24BBF1C200DF9B88;
 					};
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 			buildConfigurationList = D626645624BBF1C200DF9B88 /* Build configuration list for PBXProject "Gemini" */;
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 				D62664A724BBF26A00DF9B88 /* GeminiFormat */,
 				D62664AF24BBF26A00DF9B88 /* GeminiFormatTests */,
+				D62664CD24BC081B00DF9B88 /* GeminiRenderer */,
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 			);
 		};
 /* End PBXProject section */
@@ -466,6 +642,20 @@
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 			);
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+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Gemini.app/Contents/MacOS/Gemini";
+			};
+			name = Debug;
+		};
+		D62664EA24BC081B00DF9B88 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEVELOPMENT_TEAM = HGYVAQA9FW;
+				INFOPLIST_FILE = GeminiRendererTests/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/../Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = net.shadowfacts.GeminiRendererTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Gemini.app/Contents/MacOS/Gemini";
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -984,6 +1314,24 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		D62664E524BC081B00DF9B88 /* Build configuration list for PBXNativeTarget "GeminiRenderer" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				D62664E624BC081B00DF9B88 /* Debug */,
+				D62664E724BC081B00DF9B88 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		D62664E824BC081B00DF9B88 /* Build configuration list for PBXNativeTarget "GeminiRendererTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				D62664E924BC081B00DF9B88 /* Debug */,
+				D62664EA24BC081B00DF9B88 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */
 	};
 	rootObject = D626645324BBF1C200DF9B88 /* Project object */;

Gemini.xcodeproj/xcshareddata/xcschemes/GeminiFormat.xcscheme

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1200"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "D62664A724BBF26A00DF9B88"
+               BuildableName = "GeminiFormat.framework"
+               BlueprintName = "GeminiFormat"
+               ReferencedContainer = "container:Gemini.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "D62664A724BBF26A00DF9B88"
+            BuildableName = "GeminiFormat.framework"
+            BlueprintName = "GeminiFormat"
+            ReferencedContainer = "container:Gemini.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Gemini.xcodeproj/xcuserdata/shadowfacts.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -12,12 +12,25 @@
 		<key>GeminiFormat.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>2</integer>
+			<integer>1</integer>
 		</dict>
 		<key>GeminiProtocol.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>1</integer>
+			<integer>2</integer>
+		</dict>
+		<key>GeminiRenderer.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>3</integer>
+		</dict>
+	</dict>
+	<key>SuppressBuildableAutocreation</key>
+	<dict>
+		<key>D62664A724BBF26A00DF9B88</key>
+		<dict>
+			<key>primary</key>
+			<true/>
 		</dict>
 	</dict>
 </dict>

Gemini/AppDelegate.swift

@@ -7,12 +7,15 @@
 
 import Cocoa
 import SwiftUI
+import GeminiProtocol
 
 @NSApplicationMain
 class AppDelegate: NSObject, NSApplicationDelegate {
 
     var window: NSWindow!
 
+    var connection: GeminiConnection!
+    let url = URL(string: "gemini://localhost:1965/overview.gmi")!
     
     func applicationDidFinishLaunching(_ aNotification: Notification) {
         // Create the SwiftUI view that provides the window contents.
@@ -27,13 +30,40 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         window.center()
         window.setFrameAutosaveName("Main Window")
         window.contentView = NSHostingView(rootView: contentView)
+        window.title = "Gemini"
         window.makeKeyAndOrderFront(nil)
+        
+        connection = GeminiConnection(endpoint: .url(url), delegate: self)
     }
 
     func applicationWillTerminate(_ aNotification: Notification) {
         // Insert code here to tear down your application
     }
 
+    var alreadyReceived = false
 
 }
 
+extension AppDelegate: GeminiConnectionDelegate {
+    func connectionReady(_ connection: GeminiConnection) {
+        print("!! Ready")
+        let req = try! GeminiRequest(url: url)
+        connection.sendRequest(req)
+    }
+    
+    func connection(_ connection: GeminiConnection, receivedData data: Data?, header: GeminiResponseHeader) {
+        if !alreadyReceived {
+            alreadyReceived = true
+            print("!! Status: \(header.status)")
+            print("!! Meta: '\(header.meta)'")
+        }
+        if let data = data {
+            print(String(data: data, encoding: .utf8)!)
+        }
+    }
+    
+    func connectionCompleted(_ connection: GeminiConnection) {
+        print("!! completed")
+    }
+}
+

Gemini/Gemini.entitlements

@@ -6,5 +6,7 @@
 	<true/>
 	<key>com.apple.security.files.user-selected.read-only</key>
 	<true/>
+	<key>com.apple.security.network.client</key>
+	<true/>
 </dict>
 </plist>

GeminiProtocol/GeminiConnection.swift

@@ -8,19 +8,19 @@
 import Foundation
 import Network
 
-protocol GeminiConnectionDelegate: class {
+public protocol GeminiConnectionDelegate: class {
     func connectionReady(_ connection: GeminiConnection)
     func connection(_ connection: GeminiConnection, receivedData data: Data?, header: GeminiResponseHeader)
     func connectionCompleted(_ connection: GeminiConnection)
 }
 
-class GeminiConnection {
+public class GeminiConnection {
     
-    weak var delegate: GeminiConnectionDelegate?
+    public weak var delegate: GeminiConnectionDelegate?
     
     private var connection: NWConnection?
     
-    init(endpoint: NWEndpoint, delegate: GeminiConnectionDelegate? = nil) {
+    public init(endpoint: NWEndpoint, delegate: GeminiConnectionDelegate? = nil) {
         self.connection = NWConnection(to: endpoint, using: .gemini)
         self.delegate = delegate
         
@@ -49,7 +49,7 @@ class GeminiConnection {
     
     var report: NWConnection.PendingDataTransferReport!
     
-    func sendRequest(_ request: GeminiRequest) {
+    public func sendRequest(_ request: GeminiRequest) {
         guard let connection = connection else { return }
         
         let message = NWProtocolFramer.Message(geminiRequest: request)

GeminiProtocol/GeminiRequest.swift

@@ -7,10 +7,10 @@
 
 import Foundation
 
-struct GeminiRequest {
-    let url: URL
+public struct GeminiRequest {
+    public let url: URL
     
-    init(url: URL) throws {
+    public init(url: URL) throws {
         if url.absoluteString.count > 1024 {
             throw Error.urlTooLong
         }
@@ -24,7 +24,7 @@ struct GeminiRequest {
     }
 }
 
-extension GeminiRequest {
+public extension GeminiRequest {
     enum Error: Swift.Error {
         case urlTooLong
     }

GeminiProtocol/GeminiResponse.swift

@@ -8,11 +8,14 @@
 import Foundation
 import UniformTypeIdentifiers
 
-struct GeminiResponse {
-    let status: StatusCode
-    let meta: String
-    let body: Data?
+public struct GeminiResponse {
+    public let status: StatusCode
+    public let meta: String
+    public let body: Data?
     
+}
+
+public extension GeminiResponse {
     // Helpers
     var rawMimeType: String? {
         guard status.isSuccess else { return nil }
@@ -53,7 +56,7 @@ struct GeminiResponse {
     }
 }
 
-extension GeminiResponse {
+public extension GeminiResponse {
     enum StatusCode: Int {
         // All statuses and subtypes
         case input = 10
@@ -89,7 +92,7 @@ extension GeminiResponse {
 }
 
 extension GeminiResponse.StatusCode: CustomStringConvertible {
-    var description: String {
+    public var description: String {
         switch self {
         case .input:
             return "input"

GeminiProtocol/GeminiResponseHeader.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-struct GeminiResponseHeader {
-    let status: GeminiResponse.StatusCode
-    let meta: String
+public struct GeminiResponseHeader {
+    public let status: GeminiResponse.StatusCode
+    public let meta: String
 }

GeminiRenderer/DocumentView.swift

@@ -0,0 +1,47 @@
+//
+//  DocumentView.swift
+//  GeminiRenderer
+//
+//  Created by Shadowfacts on 7/12/20.
+//
+
+import SwiftUI
+import GeminiFormat
+
+public struct DocumentView: View {
+    private let document: Document
+    private let blocks: [RenderingBlock]
+    
+    public init(document: Document) {
+        self.document = document
+        self.blocks = document.renderingBlocks
+    }
+    
+    public var body: some View {
+        ScrollView(.vertical) {
+            MaybeLazyVStack(alignment: .leading) {
+                ForEach(blocks.indices) { (index) in
+                    RenderingBlockView(block: blocks[index])
+                }
+            }.padding()
+        }
+    }
+}
+
+struct DocumentView_Previews: PreviewProvider {
+    static var doc: Document {
+        Document(url: URL(string: "gemini://example.com")!, lines: [
+            .heading("Hello World", level: .h1),
+            .text("Some text"),
+            .preformattedToggle(alt: "blah"),
+            .preformattedText("test"),
+            .preformattedToggle(alt: nil),
+            .quote("whatever"),
+            .unorderedListItem("something")
+        ])
+    }
+    static var previews: some View {
+        DocumentView(document: doc)
+    }
+}
+

GeminiRenderer/Fonts.swift

@@ -0,0 +1,41 @@
+//
+//  Fonts.swift
+//  GeminiRenderer
+//
+//  Created by Shadowfacts on 7/13/20.
+//
+
+import SwiftUI
+import GeminiFormat
+
+extension Document.HeadingLevel {
+    var font: Font {
+        let style: Font.TextStyle
+        switch self {
+        case .h1:
+            style = .title
+        case .h2:
+            if #available(macOS 10.16, iOS 14.0, *) {
+                style = .title2
+            } else {
+                style = .headline
+            }
+        case .h3:
+            if #available(macOS 10.16, iOS 14.0, *) {
+                style = .title3
+            } else {
+                style = .subheadline
+            }
+        }
+        return .system(style, design: .serif)
+    }
+}
+
+extension Font {
+    static var documentBody: Font {
+        .system(.body, design: .serif)
+    }
+    static var documentBodyPreformatted: Font {
+        .system(.body, design: .monospaced)
+    }
+}

GeminiRenderer/GeminiRenderer.h

@@ -0,0 +1,18 @@
+//
+//  GeminiRenderer.h
+//  GeminiRenderer
+//
+//  Created by Shadowfacts on 7/12/20.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for GeminiRenderer.
+FOUNDATION_EXPORT double GeminiRendererVersionNumber;
+
+//! Project version string for GeminiRenderer.
+FOUNDATION_EXPORT const unsigned char GeminiRendererVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <GeminiRenderer/PublicHeader.h>
+
+

GeminiRenderer/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+</dict>
+</plist>

GeminiRenderer/MaybeLazyVStack.swift

@@ -0,0 +1,40 @@
+//
+//  MaybeLazyVStack.swift
+//  GeminiRenderer
+//
+//  Created by Shadowfacts on 7/12/20.
+//
+
+import SwiftUI
+
+struct MaybeLazyVStack<Content: View>: View {
+    private let alignment: HorizontalAlignment
+    private let spacing: CGFloat?
+    private let content: Content
+    
+    init(alignment: HorizontalAlignment = .center, spacing: CGFloat? = nil, @ViewBuilder content: () -> Content) {
+        self.alignment = alignment
+        self.spacing = spacing
+        self.content = content()
+    }
+    
+    @ViewBuilder
+    var body: some View {
+        if #available(macOS 16.0, iOS 14.0, *) {
+            LazyVStack(alignment: alignment, spacing: spacing) {
+                content
+            }
+        } else {
+            VStack(alignment: alignment, spacing: spacing) {
+                content
+            }
+        }
+    }
+}
+
+struct MaybeLazyVStack_Previews: PreviewProvider {
+    static var previews: some View {
+//        MaybeLazyVStack()
+        EmptyView()
+    }
+}

GeminiRenderer/RenderingBlock.swift

@@ -0,0 +1,56 @@
+//
+//  RenderingBlock.swift
+//  GeminiRenderer
+//
+//  Created by Shadowfacts on 7/12/20.
+//
+
+import Foundation
+import GeminiFormat
+
+enum RenderingBlock: Equatable {
+    case text(String)
+    case link(URL, text: String?)
+    case preformatted(String, alt: String?)
+    case heading(String, level: Document.HeadingLevel)
+    case unorderedListItem(String)
+    case quote(String)
+}
+
+extension Document {
+    var renderingBlocks: [RenderingBlock] {
+        var blocks = [RenderingBlock]()
+        
+        var currentPreformatted: (text: String, alt: String?)?
+        
+        for line in self.lines {
+            switch line {
+            case let .preformattedToggle(alt: alt):
+                if let (text, alt) = currentPreformatted {
+                    // drop last trailing newline
+                    let realText = String(text.dropLast(1))
+                    blocks.append(.preformatted(realText, alt: alt))
+                    currentPreformatted = nil
+                } else {
+                    currentPreformatted = ("", alt: alt)
+                }
+            case let .preformattedText(text):
+                currentPreformatted!.text += text
+                currentPreformatted!.text += "\n"
+            case let .text(text):
+                blocks.append(.text(text))
+            case let .link(url, text: text):
+                blocks.append(.link(url, text: text))
+            case let .heading(text, level: level):
+                blocks.append(.heading(text, level: level))
+            case let .unorderedListItem(text):
+                blocks.append(.unorderedListItem(text))
+            case let .quote(text):
+                blocks.append(.quote(text))
+            }
+        }
+        
+        
+        return blocks
+    }
+}

GeminiRenderer/RenderingBlockView.swift

@@ -0,0 +1,66 @@
+//
+//  RenderingBlockView.swift
+//  GeminiRenderer
+//
+//  Created by Shadowfacts on 7/13/20.
+//
+
+import SwiftUI
+import GeminiFormat
+
+struct RenderingBlockView: View {
+    let block: RenderingBlock
+    
+    @ViewBuilder
+    var body: some View {
+        switch block {
+        case let .text(text):
+            Text(verbatim: text)
+                .font(.documentBody)
+                .frame(maxWidth: .infinity, alignment: .leading)
+        case let .link(url, text: linkText):
+            let text = linkText ?? url.absoluteString
+            Text(verbatim: text)
+                .font(.documentBody)
+                .foregroundColor(.blue)
+                .underline()
+                .frame(maxWidth: .infinity, alignment: .leading)
+        case let .preformatted(text, alt: _):
+            ScrollView(.horizontal) {
+                Text(verbatim: text)
+                    .font(.documentBodyPreformatted)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+            }
+        case let .heading(text, level: level):
+            Text(verbatim: text)
+                .font(level.font)
+                .frame(maxWidth: .infinity, alignment: .leading)
+        case let .unorderedListItem(text):
+            // todo: should this be .firstTextBaseline?
+            HStack(alignment: .top, spacing: 4) {
+                Text(verbatim: "\u{2022}")
+                Text(verbatim: text)
+                    .font(.documentBody)
+                Spacer()
+            }.frame(maxWidth: .infinity, alignment: .leading)
+        case let .quote(text):
+            HStack(spacing: 4) {
+                Color.gray
+                    .frame(width: 4)
+                Text(verbatim: text)
+                    .font(Font.documentBody.italic())
+                    .foregroundColor(.gray)
+                Spacer()
+            }.frame(maxWidth: .infinity, alignment: .leading)
+        }
+    }
+}
+
+struct RenderingBlockView_Previews: PreviewProvider {
+    static var previews: some View {
+        Group {
+            RenderingBlockView(block: .text("Some Text"))
+            RenderingBlockView(block: .quote("A Quote"))
+        }
+    }
+}

GeminiRendererTests/GeminiRendererTests.swift

@@ -0,0 +1,33 @@
+//
+//  GeminiRendererTests.swift
+//  GeminiRendererTests
+//
+//  Created by Shadowfacts on 7/12/20.
+//
+
+import XCTest
+@testable import GeminiRenderer
+
+class GeminiRendererTests: XCTestCase {
+
+    override func setUpWithError() throws {
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+
+    override func tearDownWithError() throws {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+    }
+
+    func testExample() throws {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+    }
+
+    func testPerformanceExample() throws {
+        // This is an example of a performance test case.
+        self.measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+
+}

GeminiRendererTests/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>