add unit test target with BrewParser extraction

Extract brew output parsing into BrewParser.swift (pure Swift, no AppKit)
and add BrewBarTests target with 7 passing tests covering parseOutdated
and parseVersion edge cases.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/skills/build/SKILL.md

@@ -0,0 +1,25 @@
+---
+name: build
+description: Build BrewBar with xcodebuild in Debug configuration and report any compiler errors or warnings.
+disable-model-invocation: false
+---
+
+Build the BrewBar project using xcodebuild with the Debug configuration.
+
+Run the following command from the project root:
+
+```
+xcodebuild \
+  -project BrewBar.xcodeproj \
+  -scheme BrewBar \
+  -configuration Debug \
+  -destination "platform=macOS" \
+  build \
+  2>&1
+```
+
+After running:
+1. If the build succeeds, report "Build succeeded" and note any warnings.
+2. If it fails, show the relevant error lines (not the full raw output), explain what each error means, and suggest a fix if the cause is clear.
+
+This is a zero-dependency project (no SPM, CocoaPods, or Carthage), so no package resolution step is needed.

.claude/skills/run/SKILL.md

@@ -0,0 +1,34 @@
+---
+name: run
+description: Build and launch BrewBar.app for manual testing. Use after making changes to verify the app runs and the menu bar icon appears correctly.
+disable-model-invocation: false
+---
+
+Build and launch BrewBar for manual testing.
+
+Steps:
+1. Build the app in Debug configuration:
+   ```
+   xcodebuild \
+     -project BrewBar.xcodeproj \
+     -scheme BrewBar \
+     -configuration Debug \
+     -destination "platform=macOS" \
+     build \
+     SYMROOT=build \
+     2>&1
+   ```
+   If the build fails, stop here and report the errors with explanations.
+
+2. If the build succeeds, open the built app:
+   ```
+   open build/Debug/BrewBar.app
+   ```
+
+3. Tell the user:
+   - The app is a menu bar app (.accessory policy) — it will NOT appear in the Dock, only in the menu bar at the top right of the screen
+   - Look for the BrewBar icon in the menu bar to confirm it launched
+   - Clicking the icon opens the menu; the app runs Homebrew commands in the background
+   - To quit, use the Quit option in the app's menu
+
+Note: If a previous instance is already running, macOS may bring it forward instead of launching a new one. Quit the existing instance first if you need a fresh launch.

.gitignore

@@ -1 +1,4 @@
 *.xcuserdatad/
+CLAUDE.local.md
+.claude/settings.local.json
+build/

.swiftlint.yml

@@ -0,0 +1,35 @@
+disabled_rules:
+  - trailing_whitespace  # swiftformat handles this
+  - todo                 # todos in comments are fine
+
+opt_in_rules:
+  - force_unwrapping
+  - empty_count
+  - closure_spacing
+  - contains_over_first_not_nil
+
+included:
+  - BrewBar
+
+excluded:
+  - BrewBar.xcodeproj
+
+line_length:
+  warning: 140
+  error: 200
+
+file_length:
+  warning: 500
+  error: 800
+
+function_body_length:
+  warning: 80
+  error: 120
+
+type_body_length:
+  warning: 400
+  error: 600
+
+cyclomatic_complexity:
+  warning: 15
+  error: 25

BrewBar.xcodeproj/project.pbxproj

@@ -6,8 +6,19 @@
 	objectVersion = 77;
 	objects = {
 
+/* Begin PBXContainerItemProxy section */
+		87F2AA852FEE797F0014F9D6 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 87F2AA5A2FEE797F0014F9D6 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 87F2AA612FEE797F0014F9D6;
+			remoteInfo = BrewBar;
+		};
+/* End PBXContainerItemProxy section */
+
 /* Begin PBXFileReference section */
 		87F2AA622FEE797F0014F9D6 /* BrewBar.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = BrewBar.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		87F2AA802FEE797F0014F9D6 /* BrewBarTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = BrewBarTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedBuildFileExceptionSet section */
@@ -29,6 +40,11 @@
 			path = BrewBar;
 			sourceTree = "<group>";
 		};
+		87F2AA812FEE797F0014F9D6 /* BrewBarTests */ = {
+			isa = PBXFileSystemSynchronizedRootGroup;
+			path = BrewBarTests;
+			sourceTree = "<group>";
+		};
 /* End PBXFileSystemSynchronizedRootGroup section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -39,6 +55,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		87F2AA822FEE797F0014F9D6 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
@@ -46,6 +69,7 @@
 			isa = PBXGroup;
 			children = (
 				87F2AA642FEE797F0014F9D6 /* BrewBar */,
+				87F2AA812FEE797F0014F9D6 /* BrewBarTests */,
 				87F2AA632FEE797F0014F9D6 /* Products */,
 			);
 			sourceTree = "<group>";
@@ -54,6 +78,7 @@
 			isa = PBXGroup;
 			children = (
 				87F2AA622FEE797F0014F9D6 /* BrewBar.app */,
+				87F2AA802FEE797F0014F9D6 /* BrewBarTests.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -83,6 +108,28 @@
 			productReference = 87F2AA622FEE797F0014F9D6 /* BrewBar.app */;
 			productType = "com.apple.product-type.application";
 		};
+		87F2AA842FEE797F0014F9D6 /* BrewBarTests */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 87F2AA892FEE797F0014F9D6 /* Build configuration list for PBXNativeTarget "BrewBarTests" */;
+			buildPhases = (
+				87F2AA832FEE797F0014F9D6 /* Sources */,
+				87F2AA822FEE797F0014F9D6 /* Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				87F2AA862FEE797F0014F9D6 /* PBXTargetDependency */,
+			);
+			fileSystemSynchronizedGroups = (
+				87F2AA812FEE797F0014F9D6 /* BrewBarTests */,
+			);
+			name = BrewBarTests;
+			packageProductDependencies = (
+			);
+			productName = BrewBarTests;
+			productReference = 87F2AA802FEE797F0014F9D6 /* BrewBarTests.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
 /* End PBXNativeTarget section */
 
 /* Begin PBXProject section */
@@ -96,6 +143,10 @@
 					87F2AA612FEE797F0014F9D6 = {
 						CreatedOnToolsVersion = 26.3;
 					};
+					87F2AA842FEE797F0014F9D6 = {
+						CreatedOnToolsVersion = 26.3;
+						TestTargetID = 87F2AA612FEE797F0014F9D6;
+					};
 				};
 			};
 			buildConfigurationList = 87F2AA5D2FEE797F0014F9D6 /* Build configuration list for PBXProject "BrewBar" */;
@@ -113,6 +164,7 @@
 			projectRoot = "";
 			targets = (
 				87F2AA612FEE797F0014F9D6 /* BrewBar */,
+				87F2AA842FEE797F0014F9D6 /* BrewBarTests */,
 			);
 		};
 /* End PBXProject section */
@@ -135,8 +187,23 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		87F2AA832FEE797F0014F9D6 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXSourcesBuildPhase section */
 
+/* Begin PBXTargetDependency section */
+		87F2AA862FEE797F0014F9D6 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 87F2AA612FEE797F0014F9D6 /* BrewBar */;
+			targetProxy = 87F2AA852FEE797F0014F9D6 /* PBXContainerItemProxy */;
+		};
+/* End PBXTargetDependency section */
+
 /* Begin XCBuildConfiguration section */
 		87F2AA6B2FEE79800014F9D6 /* Debug */ = {
 			isa = XCBuildConfiguration;
@@ -261,11 +328,20 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
+				AUTOMATION_APPLE_EVENTS = NO;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = GLVUYYHFD9;
 				ENABLE_APP_SANDBOX = NO;
+				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
+				ENABLE_RESOURCE_ACCESS_AUDIO_INPUT = NO;
+				ENABLE_RESOURCE_ACCESS_CALENDARS = NO;
+				ENABLE_RESOURCE_ACCESS_CAMERA = NO;
+				ENABLE_RESOURCE_ACCESS_CONTACTS = NO;
+				ENABLE_RESOURCE_ACCESS_LOCATION = NO;
+				ENABLE_RESOURCE_ACCESS_PHOTO_LIBRARY = NO;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = BrewBar/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = BrewBar;
@@ -280,6 +356,12 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.MaxSoch.BrewBar;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				REGISTER_APP_GROUPS = YES;
+				RUNTIME_EXCEPTION_ALLOW_DYLD_ENVIRONMENT_VARIABLES = NO;
+				RUNTIME_EXCEPTION_ALLOW_JIT = NO;
+				RUNTIME_EXCEPTION_ALLOW_UNSIGNED_EXECUTABLE_MEMORY = NO;
+				RUNTIME_EXCEPTION_DEBUGGING_TOOL = NO;
+				RUNTIME_EXCEPTION_DISABLE_EXECUTABLE_PAGE_PROTECTION = NO;
+				RUNTIME_EXCEPTION_DISABLE_LIBRARY_VALIDATION = NO;
 				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				SWIFT_APPROACHABLE_CONCURRENCY = YES;
 				SWIFT_DEFAULT_ACTOR_ISOLATION = MainActor;
@@ -294,11 +376,20 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
+				AUTOMATION_APPLE_EVENTS = NO;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = GLVUYYHFD9;
 				ENABLE_APP_SANDBOX = NO;
+				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
+				ENABLE_RESOURCE_ACCESS_AUDIO_INPUT = NO;
+				ENABLE_RESOURCE_ACCESS_CALENDARS = NO;
+				ENABLE_RESOURCE_ACCESS_CAMERA = NO;
+				ENABLE_RESOURCE_ACCESS_CONTACTS = NO;
+				ENABLE_RESOURCE_ACCESS_LOCATION = NO;
+				ENABLE_RESOURCE_ACCESS_PHOTO_LIBRARY = NO;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = BrewBar/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = BrewBar;
@@ -313,6 +404,12 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.MaxSoch.BrewBar;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				REGISTER_APP_GROUPS = YES;
+				RUNTIME_EXCEPTION_ALLOW_DYLD_ENVIRONMENT_VARIABLES = NO;
+				RUNTIME_EXCEPTION_ALLOW_JIT = NO;
+				RUNTIME_EXCEPTION_ALLOW_UNSIGNED_EXECUTABLE_MEMORY = NO;
+				RUNTIME_EXCEPTION_DEBUGGING_TOOL = NO;
+				RUNTIME_EXCEPTION_DISABLE_EXECUTABLE_PAGE_PROTECTION = NO;
+				RUNTIME_EXCEPTION_DISABLE_LIBRARY_VALIDATION = NO;
 				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				SWIFT_APPROACHABLE_CONCURRENCY = YES;
 				SWIFT_DEFAULT_ACTOR_ISOLATION = MainActor;
@@ -322,6 +419,48 @@
 			};
 			name = Release;
 		};
+		87F2AA872FEE797F0014F9D6 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				BUNDLE_LOADER = "$(TEST_HOST)";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = GLVUYYHFD9;
+				GENERATE_INFOPLIST_FILE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 15.6;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "com.MaxSoch.BrewBarTests";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SDKROOT = macosx;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_DEFAULT_ACTOR_ISOLATION = MainActor;
+				SWIFT_EMIT_LOC_STRINGS = NO;
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/BrewBar.app/Contents/MacOS/BrewBar";
+			};
+			name = Debug;
+		};
+		87F2AA882FEE797F0014F9D6 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				BUNDLE_LOADER = "$(TEST_HOST)";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = GLVUYYHFD9;
+				GENERATE_INFOPLIST_FILE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 15.6;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "com.MaxSoch.BrewBarTests";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SDKROOT = macosx;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_DEFAULT_ACTOR_ISOLATION = MainActor;
+				SWIFT_EMIT_LOC_STRINGS = NO;
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/BrewBar.app/Contents/MacOS/BrewBar";
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -343,6 +482,15 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		87F2AA892FEE797F0014F9D6 /* Build configuration list for PBXNativeTarget "BrewBarTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				87F2AA872FEE797F0014F9D6 /* Debug */,
+				87F2AA882FEE797F0014F9D6 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */
 	};
 	rootObject = 87F2AA5A2FEE797F0014F9D6 /* Project object */;

BrewBar/BrewBarApp.swift

@@ -2,7 +2,6 @@ import Cocoa
 
 @main
 class AppDelegate: NSObject, NSApplicationDelegate {
-    
     static func main() {
         let app = NSApplication.shared
         let delegate = AppDelegate()
@@ -24,7 +23,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     var brewPath: String?
 
     var refreshTimer: Timer?
-    //var refreshInterval: TimeInterval = 3600
+    /// var refreshInterval: TimeInterval = 3600
     var refreshInterval: TimeInterval {
         get {
             let saved = UserDefaults.standard.double(forKey: "refreshInterval")
@@ -42,8 +41,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 
     // MARK: - Menu
 
-    func applicationDidFinishLaunching(_ notification: Notification) {
+    func applicationDidFinishLaunching(_: Notification) {
-
         statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)
         setMenuBarIcon("brewbar-uptodate")
 
@@ -57,16 +55,14 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         menu.addItem(NSMenuItem(title: "🔄 Refresh", action: #selector(refreshAction), keyEquivalent: "r"))
         menu.addItem(NSMenuItem(title: "📦 Upgrade All", action: #selector(upgradeAll), keyEquivalent: "u"))
         let outdatedItem = NSMenuItem(title: "📋 Outdated", action: nil, keyEquivalent: "")
-            outdatedSubmenu = NSMenu()
+        outdatedSubmenu = NSMenu()
-            outdatedSubmenu.addItem(NSMenuItem(title: "Refresh List", action: #selector(forceRefreshOutdated), keyEquivalent: ""))
+        outdatedSubmenu.addItem(NSMenuItem(title: "Refresh List", action: #selector(forceRefreshOutdated), keyEquivalent: ""))
-            outdatedItem.submenu = outdatedSubmenu
+        outdatedItem.submenu = outdatedSubmenu
-            menu.addItem(outdatedItem)
+        menu.addItem(outdatedItem)
         menu.addItem(NSMenuItem(title: "📜 Logs", action: #selector(showLogs), keyEquivalent: "l"))
 
         menu.addItem(NSMenuItem.separator())
 
-        
-        
         let intervalItem = NSMenuItem(title: "⏱ Refresh Interval", action: nil, keyEquivalent: "")
         let intervalSubmenu = NSMenu()
 
@@ -81,30 +77,27 @@ class AppDelegate: NSObject, NSApplicationDelegate {
             intervalSubmenu.addItem(item)
         }
 
-                let customMenuItem = NSMenuItem()
+        let customMenuItem = NSMenuItem()
-                let customView = NSView(frame: NSRect(x: 0, y: 0, width: 200, height: 30))
+        let customView = NSView(frame: NSRect(x: 0, y: 0, width: 200, height: 30))
 
-                let textField = NSTextField(frame: NSRect(x: 10, y: 4, width: 120, height: 22))
+        let textField = NSTextField(frame: NSRect(x: 10, y: 4, width: 120, height: 22))
-                textField.placeholderString = "Secondes..."
+        textField.placeholderString = "Secondes..."
-                textField.stringValue = "\(Int(refreshInterval))"
+        textField.stringValue = "\(Int(refreshInterval))"
 
-                let confirmButton = NSButton(frame: NSRect(x: 138, y: 4, width: 52, height: 22))
+        let confirmButton = NSButton(frame: NSRect(x: 138, y: 4, width: 52, height: 22))
-                confirmButton.title = "✓ Set"
+        confirmButton.title = "✓ Set"
-                confirmButton.bezelStyle = .rounded
+        confirmButton.bezelStyle = .rounded
-                confirmButton.target = self
+        confirmButton.target = self
-                confirmButton.action = #selector(applyCustomInterval(_:))
+        confirmButton.action = #selector(applyCustomInterval(_:))
 
-                customView.addSubview(textField)
+        customView.addSubview(textField)
-                customView.addSubview(confirmButton)
+        customView.addSubview(confirmButton)
-                customMenuItem.view = customView
+        customMenuItem.view = customView
-                intervalSubmenu.addItem(customMenuItem)
+        intervalSubmenu.addItem(customMenuItem)
 
         intervalItem.submenu = intervalSubmenu
         menu.addItem(intervalItem)
 
-        
-        
-
         versionItem = NSMenuItem(title: "🏷 Brew: ...", action: nil, keyEquivalent: "")
         menu.addItem(versionItem)
 
@@ -145,7 +138,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 
     @objc func setRefreshInterval(_ sender: NSMenuItem) {
         guard let interval = sender.representedObject as? TimeInterval else { return }
-        refreshInterval = interval  // ← le set sauvegarde dans UserDefaults
+        refreshInterval = interval // ← le set sauvegarde dans UserDefaults
         restartTimer()
     }
 
@@ -166,7 +159,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 
         let paths = [
             "/opt/homebrew/bin/brew",
-            "/usr/local/bin/brew"
+            "/usr/local/bin/brew",
         ]
 
         for path in paths {
@@ -176,15 +169,13 @@ class AppDelegate: NSObject, NSApplicationDelegate {
             }
         }
 
-        //fallback
+        // fallback
         brewPath = "brew"
         return "brew"
     }
 
     func runBrew(_ command: String, completion: @escaping (String) -> Void = { _ in }) {
-
         DispatchQueue.global().async {
-
             let brew = self.resolveBrewPath()
             let cleaned = command.replacingOccurrences(of: "brew ", with: "")
             let fullCommand = "\(brew) \(cleaned)"
@@ -233,9 +224,8 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         }
     }
 
-    // ✅ SMART refresh (uses cache)
+    /// ✅ SMART refresh (uses cache)
     @objc func refreshOutdatedList() {
-
         // if fetched in last 5s → uses cache
         if let last = lastOutdatedFetch, Date().timeIntervalSince(last) < 5 {
             updateOutdatedMenu(with: cachedOutdated)
@@ -245,7 +235,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         fetchOutdated()
     }
 
-    // ✅ FORCE refresh (menu button)
+    /// ✅ FORCE refresh (menu button)
     @objc func forceRefreshOutdated() {
         fetchOutdated()
     }
@@ -254,8 +244,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         setMenuBarIcon("brewbar-updating")
 
         runBrew("outdated") { output in
-
+            let lines = BrewParser.parseOutdated(output)
-            let lines = output.split(separator: "\n").map { String($0) }
 
             self.cachedOutdated = lines
             self.lastOutdatedFetch = Date()
@@ -273,7 +262,6 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     }
 
     func updateOutdatedMenu(with lines: [String]) {
-
         outdatedSubmenu.removeAllItems()
         outdatedSubmenu.addItem(NSMenuItem(title: "Refresh List", action: #selector(forceRefreshOutdated), keyEquivalent: ""))
 
@@ -283,7 +271,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         }
 
         for formula in lines {
-            let item = NSMenuItem(title: formula, action: #selector(self.upgradeSingle(_:)), keyEquivalent: "")
+            let item = NSMenuItem(title: formula, action: #selector(upgradeSingle(_:)), keyEquivalent: "")
             item.representedObject = formula
             outdatedSubmenu.addItem(item)
         }
@@ -313,10 +301,10 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         }
     }
 
-    // ✅ Brew version (correct)
+    /// ✅ Brew version (correct)
     func refreshBrewVersion() {
         runBrew("--version") { output in
-            let firstLine = output.split(separator: "\n").first.map(String.init) ?? "Unknown"
+            let firstLine = BrewParser.parseVersion(output)
 
             DispatchQueue.main.async {
                 self.versionItem.title = "🏷 \(firstLine)"

BrewBar/BrewParser.swift

@@ -0,0 +1,13 @@
+import Foundation
+
+enum BrewParser {
+    static func parseOutdated(_ output: String) -> [String] {
+        output.split(separator: "\n")
+            .map { String($0) }
+            .filter { !$0.isEmpty }
+    }
+
+    static func parseVersion(_ output: String) -> String {
+        output.split(separator: "\n").first.map(String.init) ?? "Unknown"
+    }
+}

BrewBar/LogWindowController.swift

@@ -1,11 +1,9 @@
 import Cocoa
 
 class LogWindowController: NSWindowController {
-
     var textView: NSTextView!
 
     convenience init() {
-
         let contentRect = NSRect(x: 0, y: 0, width: 600, height: 400)
         let styleMask: NSWindow.StyleMask = [.titled, .closable, .resizable]
 
@@ -31,6 +29,7 @@ class LogWindowController: NSWindowController {
 
     func update(text: String) {
         textView.string = text
+
         textView.scrollToEndOfDocument(nil)
     }
 }

BrewBarTests/BrewBarTests.swift

@@ -0,0 +1,39 @@
+@testable import BrewBar
+import XCTest
+
+final class BrewParserTests: XCTestCase {
+    // MARK: - parseOutdated
+
+    func testParseOutdated_multiplePackages() {
+        let output = "wget\nffmpeg\ngit\n"
+        XCTAssertEqual(BrewParser.parseOutdated(output), ["wget", "ffmpeg", "git"])
+    }
+
+    func testParseOutdated_emptyOutput() {
+        XCTAssertEqual(BrewParser.parseOutdated(""), [])
+    }
+
+    func testParseOutdated_singlePackage() {
+        XCTAssertEqual(BrewParser.parseOutdated("wget\n"), ["wget"])
+    }
+
+    func testParseOutdated_trailingNewlinesIgnored() {
+        let output = "wget\n\n\n"
+        XCTAssertEqual(BrewParser.parseOutdated(output), ["wget"])
+    }
+
+    // MARK: - parseVersion
+
+    func testParseVersion_picksFirstLine() {
+        let output = "Homebrew 4.3.0\nHomebrew/homebrew-core (git revision abc123)\n"
+        XCTAssertEqual(BrewParser.parseVersion(output), "Homebrew 4.3.0")
+    }
+
+    func testParseVersion_emptyOutput() {
+        XCTAssertEqual(BrewParser.parseVersion(""), "Unknown")
+    }
+
+    func testParseVersion_singleLine() {
+        XCTAssertEqual(BrewParser.parseVersion("Homebrew 4.3.0"), "Homebrew 4.3.0")
+    }
+}