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>

.gitignore

@@ -1,3 +1,4 @@
 *.xcuserdatad/
 CLAUDE.local.md
 .claude/settings.local.json
+build/

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;
@@ -352,6 +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 */
@@ -373,6 +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

@@ -244,7 +244,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         setMenuBarIcon("brewbar-updating")
 
         runBrew("outdated") { output in
-            let lines = output.split(separator: "\n").map { String($0) }
+            let lines = BrewParser.parseOutdated(output)
 
             self.cachedOutdated = lines
             self.lastOutdatedFetch = Date()
@@ -304,7 +304,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     /// ✅ 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"
+    }
+}

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")
+    }
+}