Xcode Server is a powerful tool integrated within Xcode that allows developers to set up continuous integration (CI) for their iOS, macOS, watchOS, and tvOS projects. This article will guide you through the process of setting up Xcode Server, creating and configuring bots, and running automated tests.

Prerequisites

Before you start, ensure you have the following:

• A Mac running macOS.
• Xcode installed (preferably the latest version).
• An Apple Developer account.

Step 1: Enable Xcode Server

1. Open Xcode.
2. Go to Xcode > Preferences > Accounts and add your Apple Developer account if you haven't already.
3. Go to Xcode > Preferences > Server.
4. Click on the Enable Xcode Server button. This will start the Xcode Server service on your Mac.

Step 2: Create a Bot

Bots are the core components of Xcode Server, responsible for building and testing your projects.

1. Open your project in Xcode.
2. Go to Product > Create Bot.
3. Follow the Bot creation wizard:
   • Integration Name: Give a name to your bot.
   • Source Control: Select the repository and branch.
   • Scheme: Choose the scheme you want to build.
   • Testing: Configure the tests you want to run.
   • Schedule: Set the integration schedule (e.g., on every commit, daily, manually).
   • Notifications: Configure notifications for integration results.

Step 3: Configure Bot Settings

1. After creating the bot, you can further configure it by going to Xcode > Preferences > Bots.
2. Select the bot you created and adjust settings such as:
   • Build Configuration: Choose Debug or Release.
   • Devices: Specify the devices or simulators to run tests on.
   • Environment Variables: Set any required environment variables.

Step 4: Run Integrations

1. You can manually trigger an integration by selecting the bot and clicking Integrate.
2. Monitor the integration process through the Xcode Server web interface or directly in Xcode under Report Navigator.

Step 5: View Results

1. After the integration completes, view the results in the Report Navigator.
2. Check for build errors, test failures, and code coverage reports.

Example: Creating a Simple Bot

Let's create a bot for a simple iOS project:

import UIKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Simple UI setup
        view.backgroundColor = .white
        let label = UILabel()
        label.text = "Hello, Xcode Server!"
        label.textAlignment = .center
        label.frame = view.bounds
        view.addSubview(label)
    }
}

1. Open the project in Xcode.
2. Go to Product > Create Bot.
3. Follow the wizard to set up the bot with the default scheme and test settings.
4. Trigger an integration and check the results.

Troubleshooting Tips

• Ensure your Mac has sufficient resources (CPU, RAM) to handle the build and test processes.
• Check network settings and firewall configurations if Xcode Server cannot access the repository.
• Regularly update Xcode and macOS to the latest versions to avoid compatibility issues.