Generate UI Test Target Attributes

Sources/XcodeGenKit/PBXProjGenerator.swift

@@ -157,7 +157,10 @@ public class PBXProjGenerator {
 
         sortGroups(group: mainGroup)
 
-        let projectAttributes: [String: Any] = ["LastUpgradeCheck": spec.xcodeVersion].merged(spec.attributes)
+        let projectAttributes: [String: Any] = ["LastUpgradeCheck": spec.xcodeVersion]
+            .merged(spec.attributes)
+            .merged(self.generateTargetAttributes() ?? [:])
+
         let root = PBXProject(
             name: spec.name,
             reference: proj.rootObject,
@@ -173,6 +176,42 @@ public class PBXProjGenerator {
 
         return proj
     }
+
+    func generateTargetAttributes() -> [String: Any]? {
+
+
+        var targetAttributes: [String: Any] = [:]
+
+        // look up TEST_TARGET_NAME build setting
+        func testTargetName(_ target: PBXTarget) -> String? {
+            guard let configurationList = target.buildConfigurationList else { return nil }
+            guard let buildConfigurationReferences = self.proj.objects.configurationLists[configurationList]?.buildConfigurations else { return nil }
+
+            let configs = buildConfigurationReferences
+                .flatMap { ref in self.proj.objects.buildConfigurations[ref] }
+
+            return configs
+                .flatMap { $0.buildSettings["TEST_TARGET_NAME"] as? String }
+                .first
+        }
+
+        let uiTestTargets = self.proj.objects.nativeTargets.values
+            .filter { $0.productType == .uiTestBundle }
+
+        for uiTestTarget in uiTestTargets {
+            guard let name = testTargetName(uiTestTarget) else { continue }
+            guard let target = self.proj.objects.targets(named: name).first else { continue }
+
+            targetAttributes[uiTestTarget.reference] = [ "TestTargetID": target.reference]
+        }
+
+        guard !targetAttributes.isEmpty else { return nil }
+
+        return [
+            "TargetAttributes": targetAttributes
+        ]
+
+    }
 
     func sortGroups(group: PBXGroup) {
         // sort children

Tests/Fixtures/TestProject/App_iOS_UITests/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>en</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>BNDL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>

Tests/Fixtures/TestProject/App_iOS_UITests/TestProjectUITests.swift

@@ -0,0 +1,26 @@
+import XCTest
+
+class TestProjectUITests: XCTestCase {
+
+    override func setUp() {
+        super.setUp()
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+
+    override func tearDown() {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+        super.tearDown()
+    }
+
+    func testExample() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+    }
+
+    func testPerformanceExample() {
+        // This is an example of a performance test case.
+        measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+}