fix: @dynamicMember conflicting field name

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Bird+Mock.graphql.swift

@@ -39,16 +39,16 @@ public extension Mock where O == Bird {
     wingspan: Double? = nil
   ) {
     self.init()
-    self.bodyTemperature = bodyTemperature
-    self.favoriteToy = favoriteToy
-    self.height = height
-    self.humanName = humanName
-    self.id = id
-    self.laysEggs = laysEggs
-    self.owner = owner
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
-    self.wingspan = wingspan
+    _set(bodyTemperature, for: \.bodyTemperature)
+    _set(favoriteToy, for: \.favoriteToy)
+    _set(height, for: \.height)
+    _set(humanName, for: \.humanName)
+    _set(id, for: \.id)
+    _set(laysEggs, for: \.laysEggs)
+    _set(owner, for: \.owner)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
+    _set(wingspan, for: \.wingspan)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Cat+Mock.graphql.swift

@@ -39,16 +39,16 @@ public extension Mock where O == Cat {
     species: String? = nil
   ) {
     self.init()
-    self.bodyTemperature = bodyTemperature
-    self.favoriteToy = favoriteToy
-    self.height = height
-    self.humanName = humanName
-    self.id = id
-    self.isJellicle = isJellicle
-    self.laysEggs = laysEggs
-    self.owner = owner
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
+    _set(bodyTemperature, for: \.bodyTemperature)
+    _set(favoriteToy, for: \.favoriteToy)
+    _set(height, for: \.height)
+    _set(humanName, for: \.humanName)
+    _set(id, for: \.id)
+    _set(isJellicle, for: \.isJellicle)
+    _set(laysEggs, for: \.laysEggs)
+    _set(owner, for: \.owner)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Crocodile+Mock.graphql.swift

@@ -27,10 +27,10 @@ public extension Mock where O == Crocodile {
     species: String? = nil
   ) {
     self.init()
-    self.height = height
-    self.id = id
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
+    _set(height, for: \.height)
+    _set(id, for: \.id)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Dog+Mock.graphql.swift

@@ -39,16 +39,16 @@ public extension Mock where O == Dog {
     species: String? = nil
   ) {
     self.init()
-    self.birthdate = birthdate
-    self.bodyTemperature = bodyTemperature
-    self.favoriteToy = favoriteToy
-    self.height = height
-    self.humanName = humanName
-    self.id = id
-    self.laysEggs = laysEggs
-    self.owner = owner
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
+    _set(birthdate, for: \.birthdate)
+    _set(bodyTemperature, for: \.bodyTemperature)
+    _set(favoriteToy, for: \.favoriteToy)
+    _set(height, for: \.height)
+    _set(humanName, for: \.humanName)
+    _set(id, for: \.id)
+    _set(laysEggs, for: \.laysEggs)
+    _set(owner, for: \.owner)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Fish+Mock.graphql.swift

@@ -33,13 +33,13 @@ public extension Mock where O == Fish {
     species: String? = nil
   ) {
     self.init()
-    self.favoriteToy = favoriteToy
-    self.height = height
-    self.humanName = humanName
-    self.id = id
-    self.owner = owner
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
+    _set(favoriteToy, for: \.favoriteToy)
+    _set(height, for: \.height)
+    _set(humanName, for: \.humanName)
+    _set(id, for: \.id)
+    _set(owner, for: \.owner)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Height+Mock.graphql.swift

@@ -27,10 +27,10 @@ public extension Mock where O == Height {
     relativeSize: GraphQLEnum<AnimalKingdomAPI.RelativeSize>? = nil
   ) {
     self.init()
-    self.centimeters = centimeters
-    self.feet = feet
-    self.inches = inches
-    self.meters = meters
-    self.relativeSize = relativeSize
+    _set(centimeters, for: \.centimeters)
+    _set(feet, for: \.feet)
+    _set(inches, for: \.inches)
+    _set(meters, for: \.meters)
+    _set(relativeSize, for: \.relativeSize)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Human+Mock.graphql.swift

@@ -33,13 +33,13 @@ public extension Mock where O == Human {
     species: String? = nil
   ) {
     self.init()
-    self.bodyTemperature = bodyTemperature
-    self.firstName = firstName
-    self.height = height
-    self.id = id
-    self.laysEggs = laysEggs
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
+    _set(bodyTemperature, for: \.bodyTemperature)
+    _set(firstName, for: \.firstName)
+    _set(height, for: \.height)
+    _set(id, for: \.id)
+    _set(laysEggs, for: \.laysEggs)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Mutation+Mock.graphql.swift

@@ -19,6 +19,6 @@ public extension Mock where O == Mutation {
     adoptPet: AnyMock? = nil
   ) {
     self.init()
-    self.adoptPet = adoptPet
+    _set(adoptPet, for: \.adoptPet)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/PetRock+Mock.graphql.swift

@@ -25,9 +25,9 @@ public extension Mock where O == PetRock {
     owner: Mock<Human>? = nil
   ) {
     self.init()
-    self.favoriteToy = favoriteToy
-    self.humanName = humanName
-    self.id = id
-    self.owner = owner
+    _set(favoriteToy, for: \.favoriteToy)
+    _set(humanName, for: \.humanName)
+    _set(id, for: \.id)
+    _set(owner, for: \.owner)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Query+Mock.graphql.swift

@@ -23,8 +23,8 @@ public extension Mock where O == Query {
     pets: [AnyMock]? = nil
   ) {
     self.init()
-    self.allAnimals = allAnimals
-    self.classroomPets = classroomPets
-    self.pets = pets
+    _set(allAnimals, for: \.allAnimals)
+    _set(classroomPets, for: \.classroomPets)
+    _set(pets, for: \.pets)
   }
 }

Sources/AnimalKingdomAPI/AnimalKingdomAPI/TestMocks/Rat+Mock.graphql.swift

@@ -33,13 +33,13 @@ public extension Mock where O == Rat {
     species: String? = nil
   ) {
     self.init()
-    self.favoriteToy = favoriteToy
-    self.height = height
-    self.humanName = humanName
-    self.id = id
-    self.owner = owner
-    self.predators = predators
-    self.skinCovering = skinCovering
-    self.species = species
+    _set(favoriteToy, for: \.favoriteToy)
+    _set(height, for: \.height)
+    _set(humanName, for: \.humanName)
+    _set(id, for: \.id)
+    _set(owner, for: \.owner)
+    _set(predators, for: \.predators)
+    _set(skinCovering, for: \.skinCovering)
+    _set(species, for: \.species)
   }
 }

Sources/ApolloCodegenLib/TemplateString.swift

@@ -133,12 +133,15 @@ struct TemplateString: ExpressibleByStringInterpolation, CustomStringConvertible
       terminator: String? = nil
     ) where T: LazySequenceProtocol, T.Element: CustomStringConvertible {
       var iterator = sequence.makeIterator()
-      guard var elementsString = iterator.next()?.description else {
+      guard
+        var elementsString = iterator.next()?.description,
+        !elementsString.isEmpty
+      else {
         removeLineIfEmpty()
         return
       }
 
-      while let element = iterator.next() {
+      while let element = iterator.next(), !element.description.isEmpty {
         elementsString.append(separator + element.description)
       }
 

Sources/ApolloCodegenLib/Templates/MockObjectTemplate.swift

@@ -53,13 +53,14 @@ struct MockObjectTemplate: TemplateRenderer {
       TemplateString("""
 
       public extension Mock where O == \(objectName) {
+        \(conflictingFieldNameProperties(fields))
         convenience init(
           \(fields.map { """
             \($0.propertyName)\(ifLet: $0.initializerParameterName, {" \($0)"}): \($0.mockType)? = nil
             """ }, separator: ",\n")
         ) {
           self.init()
-          \(fields.map { "self.\($0.propertyName) = \($0.initializerParameterName ?? $0.propertyName)" }, separator: "\n")
+          \(fields.map { "_set(\($0.initializerParameterName ?? $0.propertyName), for: \\.\($0.propertyName))" }, separator: "\n")
         }
       }
       """) : TemplateString(stringLiteral: "")
@@ -68,6 +69,19 @@ struct MockObjectTemplate: TemplateRenderer {
     """
   }
 
+  private func conflictingFieldNameProperties(_ fields: [TemplateField]) -> TemplateString {
+    """
+    \(fields.map { """
+      \(if: $0.propertyName.isConflictingTestMockFieldName, """
+        var \($0.propertyName): \($0.mockType)? {
+          get { _data["\($0.propertyName)"] as? \($0.mockType) }
+          set { _set(newValue, for: \\.\($0.propertyName)) }
+        }
+        """)
+      """ }, separator: "\n", terminator: "\n")
+    """
+  }
+
   private func mockTypeName(for type: GraphQLType) -> String {
     func nameReplacement(for type: GraphQLType, forceNonNull: Bool) -> String {
       switch type {

Sources/ApolloCodegenLib/Templates/RenderingHelpers/String+SwiftNameEscaping.swift

@@ -30,6 +30,10 @@ extension String {
     "\(self)_value" : nil
   }
 
+  var isConflictingTestMockFieldName: Bool {
+    SwiftKeywords.TestMockConflictingFieldNames.contains(self)
+  }
+
   private func escapeIf(in set: Set<String>) -> String {
     set.contains(self) ? "`\(self)`" : self
   }
@@ -81,6 +85,13 @@ enum SwiftKeywords {
     "Actor"
   ]
 
+  /// There are some field names that conflict with function names due to the @dynamicMember
+  /// subscripting of `Mock`. This set is used to match those field names and generate properties
+  /// instead of just relying on the subscript access.
+  static let TestMockConflictingFieldNames: Set<String> = [
+    "hash"
+  ]
+
   fileprivate static let FieldAccessorNamesToEscape: Set<String> = [
     "associatedtype",
     "class",

Sources/ApolloTestSupport/TestMock.swift

@@ -15,17 +15,26 @@ public class Mock<O: MockObject>: AnyMock, Hashable {
 
   public var __typename: String { _data["__typename"] as! String }
 
-  public subscript<T: AnyScalarType & Hashable>(dynamicMember keyPath: KeyPath<O.MockFields, Field<T>>) -> T? {
+  public subscript<T: AnyScalarType & Hashable>(
+    dynamicMember keyPath: KeyPath<O.MockFields, Field<T>>
+  ) -> T? {
     get {
       let field = O._mockFields[keyPath: keyPath]
       return _data[field.key.description] as? T
     }
     set {
-      let field = O._mockFields[keyPath: keyPath]
-      _data[field.key.description] = newValue
+      _set(newValue, for: keyPath)
     }
   }
 
+  public func _set<T: AnyScalarType & Hashable>(
+    _ value: T?,
+    for keyPath: KeyPath<O.MockFields, Field<T>>
+  ) {
+    let field = O._mockFields[keyPath: keyPath]
+    _data[field.key.description] = value
+  }
+
   public subscript<T: MockFieldValue>(
     dynamicMember keyPath: KeyPath<O.MockFields, Field<T>>
   ) -> T.MockValueCollectionType.Element? {
@@ -34,11 +43,18 @@ public class Mock<O: MockObject>: AnyMock, Hashable {
       return _data[field.key.description] as? T.MockValueCollectionType.Element
     }
     set {
-      let field = O._mockFields[keyPath: keyPath]
-      _data[field.key.description] = (newValue as? AnyHashable)
+      _set(newValue, for: keyPath)
     }
   }
 
+  public func _set<T: MockFieldValue>(
+    _ value: T.MockValueCollectionType.Element?,
+    for keyPath: KeyPath<O.MockFields, Field<T>>
+  ) {
+    let field = O._mockFields[keyPath: keyPath]
+    _data[field.key.description] = (value as? AnyHashable)
+  }
+
   public subscript<T: MockFieldValue>(
     dynamicMember keyPath: KeyPath<O.MockFields, Field<Array<T>>>
   ) -> [T.MockValueCollectionType.Element]? {
@@ -47,11 +63,18 @@ public class Mock<O: MockObject>: AnyMock, Hashable {
       return _data[field.key.description] as? [T.MockValueCollectionType.Element]
     }
     set {
-      let field = O._mockFields[keyPath: keyPath]
-      _data[field.key.description] = newValue?._unsafelyConvertToMockValue()
+      _set(newValue, for: keyPath)
     }
   }
 
+  public func _set<T: MockFieldValue>(
+    _ value: [T.MockValueCollectionType.Element]?,
+    for keyPath: KeyPath<O.MockFields, Field<Array<T>>>
+  ) {
+    let field = O._mockFields[keyPath: keyPath]
+    _data[field.key.description] = value?._unsafelyConvertToMockValue()
+  }
+
   public var _selectionSetMockData: JSONObject {
     _data.mapValues {
       if let mock = $0 as? AnyMock {