fix: make watch targets runnable to fix schemes in Xcode 12

Sources/TuistCore/Models/Product.swift

@@ -111,7 +111,7 @@ public enum Product: String, CustomStringConvertible, CaseIterable, Encodable {
     /// Returns true if the target can be ran.
     public var runnable: Bool {
         switch self {
-        case .app, .appClip, .commandLineTool:
+        case .app, .appClip, .commandLineTool, .watch2App:
             return true
         default:
             return false

Sources/TuistGenerator/Mappers/AutogeneratedSchemesProjectMapper.swift

@@ -96,6 +96,8 @@ public final class AutogeneratedSchemesProjectMapper: ProjectMapping {
         switch target.product {
         case .appExtension, .messagesExtension:
             return hostAppTargetReferences(for: target, project: project).first
+        case .watch2Extension:
+            return hostWatchAppTargetReferences(for: target, project: project).first
         default:
             return targetReference
         }
@@ -109,4 +111,13 @@ public final class AutogeneratedSchemesProjectMapper: ProjectMapping {
             .sorted(by: { $0.name < $1.name })
             .map { TargetReference(projectPath: project.path, name: $0.name) }
     }
+
+    private func hostWatchAppTargetReferences(for target: Target,
+                                              project: Project) -> [TargetReference]
+    {
+        project.targets
+            .filter { $0.product == .watch2App && $0.dependencies.contains(.target(name: target.name)) }
+            .sorted(by: { $0.name < $1.name })
+            .map { TargetReference(projectPath: project.path, name: $0.name) }
+    }
 }

Tests/TuistCoreTests/Models/ProductTests .swift → Tests/TuistCoreTests/Models/ProductTests.swift

@@ -77,7 +77,7 @@ final class ProductTests: XCTestCase {
 
     func test_runnable() {
         Product.allCases.forEach { product in
-            if [.app, .appClip, .commandLineTool].contains(product) {
+            if [.app, .appClip, .commandLineTool, .watch2App].contains(product) {
                 XCTAssertTrue(product.runnable)
             } else {
                 XCTAssertFalse(product.runnable)

Tests/TuistGeneratorTests/ProjectMappers/AutogeneratedSchemesProjectMapperTests.swift

@@ -142,6 +142,38 @@ final class AutogeneratedSchemesProjectMapperTests: TuistUnitTestCase {
         ])
     }
 
+    func test_map_watch2() throws {
+        // Given
+        let path = AbsolutePath("/test")
+        let app = Target.test(name: "App",
+                              product: .app,
+                              dependencies: [
+                                  .target(name: "WatchApp"),
+                              ])
+        let watchApp = Target.test(name: "WatchApp", product: .watch2App, dependencies: [.target(name: "WatchExtension")])
+        let watchAppExtension = Target.test(name: "WatchExtension", product: .watch2Extension)
+
+        let project = Project.test(path: path, targets: [app, watchApp, watchAppExtension])
+
+        // When
+        let (got, _) = try subject.map(project: project)
+
+        // Then
+        let buildActions = got.schemes.map(\.buildAction?.targets)
+        XCTAssertEqual(buildActions, [
+            [TargetReference(projectPath: path, name: "App")],
+            [TargetReference(projectPath: path, name: "WatchApp")],
+            [TargetReference(projectPath: path, name: "WatchExtension")],
+        ])
+
+        let runActions = got.schemes.map(\.runAction?.executable)
+        XCTAssertEqual(runActions, [
+            TargetReference(projectPath: path, name: "App"),
+            TargetReference(projectPath: path, name: "WatchApp"),
+            TargetReference(projectPath: path, name: "WatchApp"),
+        ])
+    }
+
     func test_map_enables_test_coverage_on_generated_schemes() throws {
         // Given
         subject = AutogeneratedSchemesProjectMapper(enableCodeCoverage: true)