Skip failing test on Linux until upstream fix

Sources/TestSupport/TestHelpers.swift

@@ -124,3 +124,11 @@ extension XCTestCase {
         describe(name, test)
     }
 }
+
+
+public func skipIfNecessary() throws {
+    #if os(Linux) && swift(<6.0.2)
+        // https://github.com/swiftlang/swift-foundation/pull/1002
+        throw XCTSkip("Skipping test on Linux until PropertyListDecoder issues are fixed.")
+    #endif
+}

Tests/FixtureTests/FixtureTests.swift

@@ -8,7 +8,8 @@ import TestSupport
 
 class FixtureTests: XCTestCase {
 
-    func testProjectFixture() {
+    func testProjectFixture() throws {
+        try skipIfNecessary()
         describe {
             $0.it("generates Test Project") {
                 try generateXcodeProject(specPath: fixturePath + "TestProject/AnotherProject/project.yml")

Tests/PerformanceTests/PerformanceTests.swift

@@ -1,6 +1,7 @@
 import Foundation
 import PathKit
 import ProjectSpec
+import TestSupport
 import XcodeGenKit
 import XcodeProj
 import XCTest
@@ -62,6 +63,7 @@ class FixturePerformanceTests: XCTestCase {
     }
 
     func testFixtureGeneration() throws {
+        try skipIfNecessary()
         let project = try Project(path: specPath)
         measure {
             let generator = ProjectGenerator(project: project)
@@ -70,6 +72,7 @@ class FixturePerformanceTests: XCTestCase {
     }
 
     func testFixtureWriting() throws {
+        try skipIfNecessary()
         let project = try Project(path: specPath)
         let generator = ProjectGenerator(project: project)
         let xcodeProject = try generator.generateXcodeProject(userName: "someUser")

Tests/XcodeGenKitTests/ProjectGeneratorTests.swift

@@ -275,7 +275,8 @@ class ProjectGeneratorTests: XCTestCase {
         }
     }
 
-    func testTargets() {
+    func testTargets() throws {
+        try skipIfNecessary()
         describe {
 
             let project = Project(name: "test", targets: targets)

Tests/XcodeGenKitTests/SchemeGeneratorTests.swift

@@ -41,7 +41,8 @@ private let uiTest = Target(
 
 class SchemeGeneratorTests: XCTestCase {
 
-    func testSchemes() {
+    func testSchemes() throws {
+        try skipIfNecessary()
         describe {
 
             let buildTarget = Scheme.BuildTarget(target: .local(app.name))

Tests/XcodeGenKitTests/SourceGeneratorTests.swift

@@ -9,7 +9,8 @@ import TestSupport
 
 class SourceGeneratorTests: XCTestCase {
 
-    func testSourceGenerator() {
+    func testSourceGenerator() throws {
+        try skipIfNecessary()
         describe {
 
             let directoryPath = Path("TestDirectory")