Merge 'main' branch to 'release/6.2'

CODEOWNERS

@@ -8,4 +8,4 @@
 # See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 #
 
-* @stmontgomery @grynspan @briancroom @SeanROlszewski @suzannaratcliff
+* @stmontgomery @grynspan @briancroom @suzannaratcliff

Documentation/ABI/TestContent.md

@@ -100,9 +100,10 @@ record's kind is a 32-bit unsigned value. The following kinds are defined:
 | `0x00000000` | – | Reserved (**do not use**) |
 | `0x74657374` | `'test'` | Test or suite declaration |
 | `0x65786974` | `'exit'` | Exit test |
+| `0x706c6179` | `'play'` | [Playground](https://github.com/apple/swift-play-experimental) |
 
-<!-- When adding cases to this enumeration, be sure to also update the
-corresponding enumeration in TestContentGeneration.swift. -->
+<!-- The kind values listed in this table should be a superset of the cases in
+the `TestContentKind` enumeration. -->
 
 If a test content record's `kind` field equals `0x00000000`, the values of all
 other fields in that record are undefined.

Sources/Testing/Events/Recorder/Event.ConsoleOutputRecorder.swift

@@ -323,7 +323,7 @@ extension Event.ConsoleOutputRecorder {
         // text instead of just the symbol. Details may be multi-line messages,
         // so split the message on newlines and indent all lines to align them
         // to the indentation provided by the symbol.
-        var lines = message.stringValue.split(whereSeparator: \.isNewline)
+        var lines = message.stringValue.split(omittingEmptySubsequences: false, whereSeparator: \.isNewline)
         lines = CollectionOfOne(lines[0]) + lines.dropFirst().map { line in
           "\(padding) \(line)"
         }

Sources/TestingMacros/ConditionMacro.swift

@@ -157,8 +157,17 @@ extension ConditionMacro {
         expandedFunctionName = conditionArgument.expandedFunctionName
       }
 
-      // Capture any comments as well (either in source or as a macro argument.)
+      // Capture any comments as well -- either in source, preceding the
+      // expression macro or one of its lexical context nodes, or as an argument
+      // to the macro.
       let commentsArrayExpr = ArrayExprSyntax {
+        // Lexical context is ordered innermost-to-outermost, so reverse it to
+        // maintain the expected order.
+        for lexicalSyntaxNode in context.lexicalContext.trailingEffectExpressions.reversed() {
+          for commentTraitExpr in createCommentTraitExprs(for: lexicalSyntaxNode) {
+            ArrayElementSyntax(expression: commentTraitExpr)
+          }
+        }
         for commentTraitExpr in createCommentTraitExprs(for: macro) {
           ArrayElementSyntax(expression: commentTraitExpr)
         }

Sources/TestingMacros/Support/EffectfulExpressionHandling.swift

@@ -12,7 +12,7 @@ import SwiftSyntax
 import SwiftSyntaxBuilder
 import SwiftSyntaxMacros
 
-// MARK: - Finding effect keywords
+// MARK: - Finding effect keywords and expressions
 
 /// A syntax visitor class that looks for effectful keywords in a given
 /// expression.
@@ -69,6 +69,21 @@ func findEffectKeywords(in node: some SyntaxProtocol, context: some MacroExpansi
   return effectFinder.effectKeywords
 }
 
+extension BidirectionalCollection<Syntax> {
+  /// The suffix of syntax nodes in this collection which are effectful
+  /// expressions, such as those for `try` or `await`.
+  var trailingEffectExpressions: some Collection<Syntax> {
+    reversed()
+      .prefix { node in
+        // This could be simplified if/when swift-syntax introduces a protocol
+        // which all effectful expression syntax node types conform to.
+        // See https://github.com/swiftlang/swift-syntax/issues/3040
+        node.is(TryExprSyntax.self) || node.is(AwaitExprSyntax.self) || node.is(UnsafeExprSyntax.self)
+      }
+      .reversed()
+  }
+}
+
 // MARK: - Inserting effect keywords/thunks
 
 /// Make a function call expression to an effectful thunk function provided by
@@ -111,7 +126,13 @@ func applyEffectfulKeywords(_ effectfulKeywords: Set<Keyword>, to expr: some Exp
 
   let needAwait = effectfulKeywords.contains(.await) && !expr.is(AwaitExprSyntax.self)
   let needTry = effectfulKeywords.contains(.try) && !expr.is(TryExprSyntax.self)
+
+  // The 'unsafe' keyword was introduced in 6.2 as part of SE-0458. Older
+  // toolchains are not aware of it, so avoid emitting expressions involving
+  // that keyword when the macro has been built using an older toolchain.
+#if compiler(>=6.2)
   let needUnsafe = effectfulKeywords.contains(.unsafe) && !expr.is(UnsafeExprSyntax.self)
+#endif
 
   // First, add thunk function calls.
   if needAwait {
@@ -120,9 +141,11 @@ func applyEffectfulKeywords(_ effectfulKeywords: Set<Keyword>, to expr: some Exp
   if needTry {
     expr = _makeCallToEffectfulThunk(.identifier("__requiringTry"), passing: expr)
   }
+#if compiler(>=6.2)
   if needUnsafe {
     expr = _makeCallToEffectfulThunk(.identifier("__requiringUnsafe"), passing: expr)
   }
+#endif
 
   // Then add keyword expressions. (We do this separately so we end up writing
   // `try await __r(__r(self))` instead of `try __r(await __r(self))` which is
@@ -143,6 +166,7 @@ func applyEffectfulKeywords(_ effectfulKeywords: Set<Keyword>, to expr: some Exp
       )
     )
   }
+#if compiler(>=6.2)
   if needUnsafe {
     expr = ExprSyntax(
       UnsafeExprSyntax(
@@ -151,6 +175,7 @@ func applyEffectfulKeywords(_ effectfulKeywords: Set<Keyword>, to expr: some Exp
       )
     )
   }
+#endif
 
   expr.leadingTrivia = originalExpr.leadingTrivia
   expr.trailingTrivia = originalExpr.trailingTrivia

Tests/TestingMacrosTests/ConditionMacroTests.swift

@@ -240,6 +240,59 @@ struct ConditionMacroTests {
       // Capture me
       Testing.__checkValue(try x(), expression: .__fromSyntaxNode("try x()"), comments: [.__line("// Capture me")], isRequired: false, sourceLocation: Testing.SourceLocation.__here()).__expected()
       """,
+
+      """
+      // Capture me
+      try #expect(x)
+      """:
+      """
+      // Capture me
+      try Testing.__checkValue(x, expression: .__fromSyntaxNode("x"), comments: [.__line("// Capture me")], isRequired: false, sourceLocation: Testing.SourceLocation.__here()).__expected()
+      """,
+
+      """
+      // Capture me
+      await #expect(x)
+      """:
+      """
+      // Capture me
+      await Testing.__checkValue(x, expression: .__fromSyntaxNode("x"), comments: [.__line("// Capture me")], isRequired: false, sourceLocation: Testing.SourceLocation.__here()).__expected()
+      """,
+
+      """
+      // Ignore me
+
+      // Comment for try
+      try
+      // Comment for await
+      await
+      // Comment for expect
+      #expect(x)
+      """:
+      """
+      // Comment for try
+      try
+      // Comment for await
+      await
+      // Comment for expect
+      Testing.__checkValue(x, expression: .__fromSyntaxNode("x"), comments: [.__line("// Comment for try"), .__line("// Comment for await"), .__line("// Comment for expect")], isRequired: false, sourceLocation: Testing.SourceLocation.__here()).__expected()
+      """,
+
+      """
+      // Ignore me
+      func example() {
+        // Capture me
+        #expect(x())
+      }
+      """:
+      """
+      func example() {
+        // Capture me
+        Testing.__checkFunctionCall((), calling: { _ in
+          x()
+        }, expression: .__fromFunctionCall(nil, "x"), comments: [.__line("// Capture me")], isRequired: false, sourceLocation: Testing.SourceLocation.__here()).__expected()
+      }
+      """,
     ]
   )
   func commentCapture(input: String, expectedOutput: String) throws {

Tests/TestingTests/EventRecorderTests.swift

@@ -257,6 +257,30 @@ struct EventRecorderTests {
   }
 #endif
 
+  @Test(
+    "Uncommonly-formatted comments",
+    .bug("rdar://149482060"),
+    arguments: [
+      "", // Empty string
+      "\n\n\n", // Only newlines
+      "\nFoo\n\nBar\n\n\nBaz\n", // Newlines interspersed with non-empty strings
+    ]
+  )
+  func uncommonComments(text: String) async throws {
+    let stream = Stream()
+
+    var configuration = Configuration()
+    configuration.eventHandlingOptions.isWarningIssueRecordedEventEnabled = true
+    let eventRecorder = Event.ConsoleOutputRecorder(writingUsing: stream.write)
+    configuration.eventHandler = { event, context in
+      eventRecorder.record(event, in: context)
+    }
+
+    await Test {
+      Issue.record(Comment(rawValue: text) /* empty */)
+    }.run(configuration: configuration)
+  }
+
   @available(_regexAPI, *)
   @Test("Issue counts are omitted on a successful test")
   func issueCountOmittedForPassingTest() async throws {