Add Directive Tests

Package.resolved

@@ -6,35 +6,44 @@
         "repositoryURL": "https://github.com/GraphQLSwift/GraphQL.git",
         "state": {
           "branch": null,
-          "revision": "17b96ed859072fca79dd562da2a79e1bc752756f",
-          "version": "2.4.1"
+          "revision": "3cf2dbce764e7ccff8447d0b7d4634c0438449d3",
+          "version": "2.9.2"
         }
       },
       {
         "package": "swift-atomics",
         "repositoryURL": "https://github.com/apple/swift-atomics.git",
         "state": {
           "branch": null,
-          "revision": "919eb1d83e02121cdb434c7bfc1f0c66ef17febe",
-          "version": "1.0.2"
+          "revision": "cd142fd2f64be2100422d658e7411e39489da985",
+          "version": "1.2.0"
         }
       },
       {
         "package": "swift-collections",
         "repositoryURL": "https://github.com/apple/swift-collections",
         "state": {
           "branch": null,
-          "revision": "f504716c27d2e5d4144fa4794b12129301d17729",
-          "version": "1.0.3"
+          "revision": "94cf62b3ba8d4bed62680a282d4c25f9c63c2efb",
+          "version": "1.1.0"
         }
       },
       {
         "package": "swift-nio",
         "repositoryURL": "https://github.com/apple/swift-nio.git",
         "state": {
           "branch": null,
-          "revision": "a16e2f54a25b2af217044e5168997009a505930f",
-          "version": "2.42.0"
+          "revision": "fc63f0cf4e55a4597407a9fc95b16a2bc44b4982",
+          "version": "2.64.0"
+        }
+      },
+      {
+        "package": "swift-system",
+        "repositoryURL": "https://github.com/apple/swift-system.git",
+        "state": {
+          "branch": null,
+          "revision": "025bcb1165deab2e20d4eaba79967ce73013f496",
+          "version": "1.2.1"
         }
       }
     ]

Package.swift

@@ -7,7 +7,7 @@ let package = Package(
         .library(name: "Graphiti", targets: ["Graphiti"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/GraphQLSwift/GraphQL.git", from: "2.4.0"),
+        .package(url: "https://github.com/GraphQLSwift/GraphQL.git", from: "2.9.2"),
     ],
     targets: [
         .target(name: "Graphiti", dependencies: ["GraphQL"]),

Tests/GraphitiTests/DirectiveTests/DirectiveTests.swift

@@ -0,0 +1,77 @@
+@testable import Graphiti
+import GraphQL
+import NIO
+import XCTest
+
+class DirectiveTests: XCTestCase {
+    private let api = StarWarsAPI()
+    private var group = MultiThreadedEventLoopGroup(numberOfThreads: System.coreCount)
+
+    deinit {
+        try? self.group.syncShutdownGracefully()
+    }
+
+    func testSkip() throws {
+        let query = """
+        query FetchHeroNameWithSkip($skipName: Boolean!) {
+            hero {
+                id
+                name @skip(if: $skipName)
+            }
+        }
+        """
+
+        let input: [String: Map] = [
+            "skipName": true,
+        ]
+
+        let response = try api.execute(
+            request: query,
+            context: StarWarsContext(),
+            on: group,
+            variables: input
+        ).wait()
+
+        let expected = GraphQLResult(
+            data: [
+                "hero": [
+                    "id": "2001",
+                ],
+            ]
+        )
+
+        XCTAssertEqual(response, expected)
+    }
+
+    func testInclude() throws {
+        let query = """
+        query FetchHeroNameWithSkip($includeName: Boolean!) {
+            hero {
+                id
+                name @include(if: $includeName)
+            }
+        }
+        """
+
+        let input: [String: Map] = [
+            "includeName": false,
+        ]
+
+        let response = try api.execute(
+            request: query,
+            context: StarWarsContext(),
+            on: group,
+            variables: input
+        ).wait()
+
+        let expected = GraphQLResult(
+            data: [
+                "hero": [
+                    "id": "2001",
+                ],
+            ]
+        )
+
+        XCTAssertEqual(response, expected)
+    }
+}