Filter backticks in TestItem IDs

Sources/SourceKitLSP/Swift/SwiftTestingScanner.swift

@@ -269,15 +269,24 @@ final class SyntacticSwiftTestingTestScanner: SyntaxVisitor {
   }
 
   override func visit(_ node: ActorDeclSyntax) -> SyntaxVisitorContinueKind {
-    return visitTypeOrExtensionDecl(node, typeNames: [node.name.text])
+    guard let identifier = node.name.identifier else {
+      return .skipChildren
+    }
+    return visitTypeOrExtensionDecl(node, typeNames: [identifier.name])
   }
 
   override func visit(_ node: ClassDeclSyntax) -> SyntaxVisitorContinueKind {
-    return visitTypeOrExtensionDecl(node, typeNames: [node.name.text])
+    guard let identifier = node.name.identifier else {
+      return .skipChildren
+    }
+    return visitTypeOrExtensionDecl(node, typeNames: [identifier.name])
   }
 
   override func visit(_ node: EnumDeclSyntax) -> SyntaxVisitorContinueKind {
-    return visitTypeOrExtensionDecl(node, typeNames: [node.name.text])
+    guard let identifier = node.name.identifier else {
+      return .skipChildren
+    }
+    return visitTypeOrExtensionDecl(node, typeNames: [identifier.name])
   }
 
   override func visit(_ node: ExtensionDeclSyntax) -> SyntaxVisitorContinueKind {
@@ -289,24 +298,29 @@ final class SyntacticSwiftTestingTestScanner: SyntaxVisitor {
   }
 
   override func visit(_ node: StructDeclSyntax) -> SyntaxVisitorContinueKind {
-    return visitTypeOrExtensionDecl(node, typeNames: [node.name.text])
+    guard let identifier = node.name.identifier else {
+      return .skipChildren
+    }
+    return visitTypeOrExtensionDecl(node, typeNames: [identifier.name])
   }
 
   override func visit(_ node: FunctionDeclSyntax) -> SyntaxVisitorContinueKind {
     let testAttribute = node.attributes
       .compactMap { $0.as(AttributeSyntax.self) }
       .first { $0.isNamed("Test", inModuleNamed: "Testing") }
 
-    guard let testAttribute else {
+    guard let testAttribute, let identifier = node.name.identifier else {
       return .skipChildren
     }
     let attributeData = TestingAttributeData(attribute: testAttribute)
     if attributeData.isHidden {
       return .skipChildren
     }
 
-    let name =
-      node.name.text + "(" + node.signature.parameterClause.parameters.map { "\($0.firstName.text):" }.joined() + ")"
+    let parameters = node.signature.parameterClause.parameters.map {
+      "\($0.firstName.identifier?.name ?? $0.firstName.text):"
+    }.joined()
+    let name = "\(identifier.name)(\(parameters))"
 
     let range = snapshot.absolutePositionRange(
       of: node.positionAfterSkippingLeadingTrivia..<node.endPositionBeforeTrailingTrivia
@@ -398,12 +412,12 @@ fileprivate extension TypeSyntax {
   var components: [String]? {
     switch self.as(TypeSyntaxEnum.self) {
     case .identifierType(let identifierType):
-      return [identifierType.name.text]
+      return [identifierType.name.identifier?.name ?? identifierType.name.text]
     case .memberType(let memberType):
       guard let baseComponents = memberType.baseType.components else {
         return nil
       }
-      return baseComponents + [memberType.name.text]
+      return baseComponents + [memberType.name.identifier?.name ?? memberType.name.text]
     default:
       return nil
     }

Tests/SourceKitLSPTests/DocumentTestDiscoveryTests.swift

@@ -565,6 +565,67 @@ final class DocumentTestDiscoveryTests: XCTestCase {
     )
   }
 
+  func testSwiftTestingTestWithBackticksInName() async throws {
+    let testClient = try await TestSourceKitLSPClient()
+    let uri = DocumentURI(for: .swift)
+
+    let positions = testClient.openDocument(
+      """
+      import Testing
+
+      1️⃣struct `MyTests` {
+        2️⃣@Test
+        func `oneIsTwo`(`foo`: Int) {
+          #expect(1 == 2)
+        }3️⃣
+      }4️⃣
+
+      5️⃣extension `MyTests` {
+        6️⃣@Test
+        func `twoIsThree`() {
+          #expect(2 == 3)
+        }7️⃣
+      }8️⃣
+      """,
+      uri: uri
+    )
+
+    let tests = try await testClient.send(DocumentTestsRequest(textDocument: TextDocumentIdentifier(uri)))
+    XCTAssertEqual(
+      tests,
+      [
+        TestItem(
+          id: "MyTests",
+          label: "MyTests",
+          disabled: false,
+          style: TestStyle.swiftTesting,
+          location: Location(uri: uri, range: positions["1️⃣"]..<positions["4️⃣"]),
+          children: [
+            TestItem(
+              id: "MyTests/oneIsTwo(foo:)",
+              label: "oneIsTwo(foo:)",
+              disabled: false,
+              style: TestStyle.swiftTesting,
+              location: Location(uri: uri, range: positions["2️⃣"]..<positions["3️⃣"]),
+              children: [],
+              tags: []
+            ),
+            TestItem(
+              id: "MyTests/twoIsThree()",
+              label: "twoIsThree()",
+              disabled: false,
+              style: TestStyle.swiftTesting,
+              location: Location(uri: uri, range: positions["6️⃣"]..<positions["7️⃣"]),
+              children: [],
+              tags: []
+            ),
+          ],
+          tags: []
+        )
+      ]
+    )
+  }
+
   func testDisabledSwiftTestingTest() async throws {
     let testClient = try await TestSourceKitLSPClient()
     let uri = DocumentURI(for: .swift)