Tests: Migrate more suites to Swift Testing (swiftlang#8993)

Migrate additional suites to Swift Testing. Namely
`MermaidPackageSerializerTests`, `PackageRegistryCommandTests` and
`WorkspaceStateTests`.

Where applicable, augment the test suites to buid against the Native and
Swift Build build engines, and to build using the `debug` and `release`
configurations.

Depends on swiftlang#8988
Relates to swiftlang#8997

Author: bkhouri

Sources/_InternalTestSupport/SwiftTesting+Helpers.swift

@@ -44,13 +44,13 @@ public func expectThrowsCommandExecutionError<T>(
 /// An `async`-friendly replacement for `XCTAssertThrowsError`.
 public func expectAsyncThrowsError<T>(
     _ expression: @autoclosure () async throws -> T,
-    _ message: @autoclosure () -> Comment = "",
+    _ message: @autoclosure () -> Comment? = nil,
     sourceLocation: SourceLocation = #_sourceLocation,
     _ errorHandler: (_ error: any Error) -> Void = { _ in }
 ) async {
     do {
         _ = try await expression()
-        Issue.record(message(), sourceLocation: sourceLocation)
+        Issue.record(message() ?? "Expected an error, which did not not.", sourceLocation: sourceLocation)
     } catch {
         errorHandler(error)
     }

Sources/_InternalTestSupport/SwiftTesting+Tags.swift

@@ -36,6 +36,7 @@ extension Tag.Feature {
 
 extension Tag.Feature.Command {
     public enum Package {}
+    public enum PackageRegistry {}
     @Tag public static var Build: Tag
     @Tag public static var Test: Tag
     @Tag public static var Run: Tag
@@ -53,6 +54,15 @@ extension Tag.Feature.Command.Package {
     @Tag public static var Update: Tag
 }
 
+extension Tag.Feature.Command.PackageRegistry {
+    @Tag public static var General: Tag
+    @Tag public static var Login: Tag
+    @Tag public static var Logout: Tag
+    @Tag public static var Publish: Tag
+    @Tag public static var Set: Tag
+    @Tag public static var Unset: Tag
+}
+
 extension Tag.Feature.PackageType {
     @Tag public static var Library: Tag
     @Tag public static var Executable: Tag

Sources/_InternalTestSupport/SwiftTesting+TraitConditional.swift

@@ -15,6 +15,7 @@ import class PackageModel.UserToolchain
 import DriverSupport
 import Basics
 import Testing
+import TSCclibc // for SPM_posix_spawn_file_actions_addchdir_np_supported
 
 extension Trait where Self == Testing.ConditionTrait {
     /// Skip test if the host operating system does not match the running OS.
@@ -67,6 +68,22 @@ extension Trait where Self == Testing.ConditionTrait {
         requiresHostLibrary(lib: "libSwiftSyntaxMacros.dylib")
     }
 
+    /// Ensure platform support working directory
+    public static var requiresWorkingDirectorySupport: Self {
+        enabled("working directory not supported on this platform") {
+        #if !os(Windows)
+            // needed for archiving
+            if SPM_posix_spawn_file_actions_addchdir_np_supported() {
+                return true
+            } else {
+                return false
+            }
+        #else
+            return true
+        #endif
+        }
+    }
+
     /// Skip test unconditionally
     public static func skip(_ comment: Comment? = nil) -> Self {
         disabled(comment ?? "Unconditional skip, a comment should be added for the reason") { true }

Tests/CommandsTests/MermaidPackageSerializerTests.swift

@@ -2,13 +2,14 @@
 //
 // This source file is part of the Swift open source project
 //
-// Copyright (c) 2024 Apple Inc. and the Swift project authors
+// Copyright (c) 2024-2025 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception
 //
 // See http://swift.org/LICENSE.txt for license information
 // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 //
 //===----------------------------------------------------------------------===//
+import Foundation
 
 import class Basics.InMemoryFileSystem
 import class Basics.ObservabilitySystem
@@ -24,14 +25,20 @@ import func _InternalTestSupport.XCTAssertNoDiagnostics
 @testable
 import Commands
 
-import XCTest
+import Testing
+import _InternalTestSupport
 
-final class MermaidPackageSerializerTests: XCTestCase {
-    func testSimplePackage() throws {
+struct MermaidPackageSerializerTests {
+    @Test(
+        .tags(
+            .TestSize.medium, //?
+        ),
+    )
+    func simplePackage() throws {
         let observability = ObservabilitySystem.makeForTesting()
         let fileSystem = InMemoryFileSystem(
             emptyFiles:
-            "/A/Sources/ATarget/main.swift",
+                "/A/Sources/ATarget/main.swift",
             "/A/Tests/ATargetTests/TestCases.swift"
         )
         let graph = try loadModulesGraph(
@@ -48,14 +55,12 @@ final class MermaidPackageSerializerTests: XCTestCase {
             ],
             observabilityScope: observability.topScope
         )
-        XCTAssertNoDiagnostics(observability.diagnostics)
+        expectNoDiagnostics(observability.diagnostics)
 
-        XCTAssertEqual(graph.packages.count, 1)
-        let package = try XCTUnwrap(graph.packages.first)
+        #expect(graph.packages.count == 1)
+        let package = try #require(graph.packages.first)
         let serializer = MermaidPackageSerializer(package: package.underlying)
-        XCTAssertEqual(
-            serializer.renderedMarkdown,
-            """
+        #expect(serializer.renderedMarkdown == """
             ```mermaid
             flowchart TB
                 subgraph a
@@ -65,14 +70,18 @@ final class MermaidPackageSerializerTests: XCTestCase {
                 end
             ```
 
-            """
-        )
+            """)
     }
 
-    func testDependenciesOnProducts() throws {
+    @Test(
+        .tags(
+            .TestSize.medium, //?
+        ),
+    )
+    func dependenciesOnProducts() throws {
         let fileSystem = InMemoryFileSystem(
             emptyFiles:
-            "/A/Sources/ATarget/foo.swift",
+                "/A/Sources/ATarget/foo.swift",
             "/A/Tests/ATargetTests/foo.swift",
             "/B/Sources/BTarget/foo.swift",
             "/B/Tests/BTargetTests/foo.swift"
@@ -107,14 +116,12 @@ final class MermaidPackageSerializerTests: XCTestCase {
             ],
             observabilityScope: observability.topScope
         )
-        XCTAssertNoDiagnostics(observability.diagnostics)
+        expectNoDiagnostics(observability.diagnostics)
 
-        XCTAssertEqual(graph.packages.count, 2)
-        let package = try XCTUnwrap(graph.package(for: .plain("A")))
+        #expect(graph.packages.count == 2)
+        let package = try #require(graph.package(for: .plain("A")))
         let serializer = MermaidPackageSerializer(package: package.underlying)
-        XCTAssertEqual(
-            serializer.renderedMarkdown,
-            """
+        #expect(serializer.renderedMarkdown == """
             ```mermaid
             flowchart TB
                 subgraph a
@@ -124,14 +131,18 @@ final class MermaidPackageSerializerTests: XCTestCase {
                 end
             ```
 
-            """
-        )
+            """)
     }
 
-    func testDependenciesOnPackages() throws {
+    @Test(
+        .tags(
+            .TestSize.medium, //?
+        ),
+    )
+    func dependenciesOnPackages() throws {
         let fileSystem = InMemoryFileSystem(
             emptyFiles:
-            "/A/Sources/ATarget/foo.swift",
+                "/A/Sources/ATarget/foo.swift",
             "/A/Tests/ATargetTests/foo.swift",
             "/B/Sources/BTarget/foo.swift",
             "/B/Tests/BTargetTests/foo.swift"
@@ -166,14 +177,12 @@ final class MermaidPackageSerializerTests: XCTestCase {
             ],
             observabilityScope: observability.topScope
         )
-        XCTAssertNoDiagnostics(observability.diagnostics)
+        expectNoDiagnostics(observability.diagnostics)
 
-        XCTAssertEqual(graph.packages.count, 2)
-        let package = try XCTUnwrap(graph.package(for: .plain("A")))
+        #expect(graph.packages.count == 2)
+        let package = try #require(graph.package(for: .plain("A")))
         let serializer = MermaidPackageSerializer(package: package.underlying)
-        XCTAssertEqual(
-            serializer.renderedMarkdown,
-            """
+        #expect(serializer.renderedMarkdown == """
             ```mermaid
             flowchart TB
                 subgraph a
@@ -186,7 +195,6 @@ final class MermaidPackageSerializerTests: XCTestCase {
                 end
             ```
 
-            """
-        )
+            """)
     }
 }