fix: Fixes default value introspection

Input object and boolean default values are represented correctly in introspection

Sources/GraphQL/Type/Introspection.swift

@@ -369,8 +369,16 @@ let __InputValue = try! GraphQLObjectType(
  else {
  return nil
  }
+
+ if defaultValue == .null || defaultValue == .undefined {
+ return defaultValue
+ }
+
+ guard let literal = try astFromValue(value: defaultValue, type: inputValue.type) else {
+ throw GraphQLError(message: "Invalid default value")
+ }
 
- return .string(defaultValue.description)
+ return .string(print(ast: literal))
  }
  ),
  ]

Sources/GraphQL/Utilities/ASTFromValue.swift

@@ -97,6 +97,11 @@ func astFromValue(
  }
 
  // Others serialize based on their corresponding scalar types.
+ if case let .bool(bool) = serialized {
+ return BooleanValue(value: bool)
+ }
+
+ // JavaScript numbers can be Int or Float values.
  if case let .number(number) = serialized {
  switch number.storageType {
  case .bool:

Tests/GraphQLTests/TypeTests/IntrospectionTests.swift

@@ -0,0 +1,271 @@
+@testable import GraphQL
+import NIO
+import XCTest
+
+class IntrospectionTests: XCTestCase {
+ private var eventLoopGroup: EventLoopGroup!
+
+ override func setUp() {
+ eventLoopGroup = MultiThreadedEventLoopGroup(numberOfThreads: System.coreCount)
+ }
+
+ override func tearDown() {
+ XCTAssertNoThrow(try eventLoopGroup.syncShutdownGracefully())
+ }
+
+ func testDefaultValues() throws {
+ let numEnum = try GraphQLEnumType(
+ name: "Enum",
+ values: [
+ "One": .init(value: "One"),
+ "Two": .init(value: "Two"),
+ ]
+ )
+ let inputObject = try GraphQLInputObjectType(
+ name: "InputObject",
+ fields: ["str": .init(type: GraphQLString)]
+ )
+ let outputObject = try GraphQLObjectType(
+ name: "Object",
+ fields: ["str": .init(type: GraphQLString)]
+ )
+
+ let query = try GraphQLObjectType(
+ name: "Query",
+ fields: [
+ "bool": .init(
+ type: GraphQLBoolean,
+ args: [
+ "bool": .init(
+ type: GraphQLBoolean,
+ defaultValue: true
+ )
+ ]
+ ),
+ "enum": .init(
+ type: numEnum,
+ args: [
+ "enum": .init(
+ type: numEnum,
+ defaultValue: "One"
+ )
+ ]
+ ),
+ "float": .init(
+ type: GraphQLFloat,
+ args: [
+ "float": .init(
+ type: GraphQLFloat,
+ defaultValue: 2.2
+ )
+ ]
+ ),
+ "id": .init(
+ type: GraphQLID,
+ args: [
+ "id": .init(
+ type: GraphQLID,
+ defaultValue: "5"
+ )
+ ]
+ ),
+ "int": .init(
+ type: GraphQLInt,
+ args: [
+ "int": .init(
+ type: GraphQLInt,
+ defaultValue: 5
+ )
+ ]
+ ),
+ "list": .init(
+ type: GraphQLList(GraphQLInt),
+ args: [
+ "list": .init(
+ type: GraphQLList(GraphQLInt),
+ defaultValue: [1, 2, 3]
+ )
+ ]
+ ),
+ "object": .init(
+ type: outputObject,
+ args: [
+ "input": .init(
+ type: inputObject,
+ defaultValue: ["str": "hello"]
+ )
+ ]
+ ),
+ "string": .init(
+ type: GraphQLString,
+ args: [
+ "string": .init(
+ type: GraphQLString,
+ defaultValue: "hello"
+ )
+ ]
+ ),
+ ]
+ )
+
+ let schema = try GraphQLSchema(query: query, types: [inputObject, outputObject])
+
+ let introspection = try graphql(
+ schema: schema,
+ request: """
+ query IntrospectionTypeQuery {
+ __schema {
+ types {
+ fields {
+ args {
+ defaultValue
+ name
+ type {
+ name
+ }
+ }
+ name
+ type {
+ name
+ }
+ }
+ name
+ }
+ }
+ }
+ """,
+ eventLoopGroup: eventLoopGroup
+ ).wait()
+
+ let queryType = try XCTUnwrap(introspection.data?["__schema"]["types"].array?.find { $0["name"] == "Query" })
+
+ XCTAssertEqual(
+ queryType,
+ [
+ "fields": [
+ [
+ "args": [
+ [
+ "defaultValue": "true",
+ "name": "bool",
+ "type": [
+ "name": "Boolean"
+ ]
+ ],
+ ],
+ "name": "bool",
+ "type": [
+ "name": "Boolean"
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "One",
+ "name": "enum",
+ "type": [
+ "name": "Enum"
+ ]
+ ],
+ ],
+ "name": "enum",
+ "type": [
+ "name": "Enum"
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "2.2",
+ "name": "float",
+ "type": [
+ "name": "Float"
+ ]
+ ],
+ ],
+ "name": "float",
+ "type": [
+ "name": "Float"
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "5",
+ "name": "id",
+ "type": [
+ "name": "ID"
+ ]
+ ],
+ ],
+ "name": "id",
+ "type": [
+ "name": "ID"
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "5",
+ "name": "int",
+ "type": [
+ "name": "Int"
+ ]
+ ],
+ ],
+ "name": "int",
+ "type": [
+ "name": "Int"
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "[1, 2, 3]",
+ "name": "list",
+ "type": [
+ "name": .null
+ ]
+ ],
+ ],
+ "name": "list",
+ "type": [
+ "name": .null
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "{ str: \"hello\" }",
+ "name": "input",
+ "type": [
+ "name": "InputObject"
+ ]
+ ],
+ ],
+ "name": "object",
+ "type": [
+ "name": "Object"
+ ]
+ ],
+ [
+ "args": [
+ [
+ "defaultValue": "\"hello\"",
+ "name": "string",
+ "type": [
+ "name": "String"
+ ]
+ ],
+ ],
+ "name": "string",
+ "type": [
+ "name": "String"
+ ]
+ ],
+ ],
+ "name": "Query"
+ ]
+ )
+ }
+}