test: Makes HelloWorldServer example testable

Author: NeedleInAJayStack

Examples/HelloWorldServer/Package.swift

@@ -12,7 +12,7 @@ let package = Package(
         .package(url: "https://github.com/GraphQLSwift/GraphQL.git", from: "4.0.0"),
     ],
     targets: [
-        .executableTarget(
+        .target(
             name: "HelloWorldServer",
             dependencies: [
                 .product(name: "GraphQL", package: "GraphQL"),
@@ -22,5 +22,12 @@ let package = Package(
                 .plugin(name: "GraphQLGeneratorPlugin", package: "graphql-generator")
             ]
         ),
+        .testTarget(
+            name: "HelloWorldServerTests",
+            dependencies: [
+                "HelloWorldServer",
+                .product(name: "GraphQL", package: "GraphQL"),
+            ]
+        )
     ]
 )

…rver/Sources/HelloWorldServer/main.swift …Sources/HelloWorldServer/Resolvers.swiftExamples/HelloWorldServer/Sources/HelloWorldServer/main.swift renamed to Examples/HelloWorldServer/Sources/HelloWorldServer/Resolvers.swift Examples/HelloWorldServer/Sources/HelloWorldServer/main.swift renamed to Examples/HelloWorldServer/Sources/HelloWorldServer/Resolvers.swift

@@ -113,50 +113,3 @@ struct Mutation: MutationProtocol {
         return user
     }
 }
-
-let schema = try buildGraphQLSchema(resolvers: Resolvers.self)
-
-let context = Context(
-    users: ["1" : .init(id: "1", name: "John", email: "john@example.com", age: 18, role: .user)],
-    posts: ["1" : .init(id: "1", title: "Foo", content: "bar", authorId: "1")]
-)
-print(
-    try await graphql(
-        schema: schema,
-        request: """
-        {
-            posts {
-                id
-                title
-                content
-                author {
-                    id
-                    name
-                    email
-                    age
-                    role
-                }
-            }
-        }
-        """,
-        context: context
-    )
-)
-
-print(
-    try await graphql(
-        schema: schema,
-        request: """
-        mutation {
-            upsertUser(userInfo: {id: "2", name: "Jane", email: "jane@example.com"}) {
-                id
-                name
-                email
-                age
-                role
-            }
-        }
-        """,
-        context: context
-    )
-)

Examples/HelloWorldServer/Tests/HelloWorldServerTests/HelloWorldServerTests.swift

@@ -0,0 +1,89 @@
+import GraphQL
+import Testing
+
+@testable import HelloWorldServer
+
+@Suite
+struct HelloWorldServerTests {
+    @Test func query() async throws {
+        let schema = try buildGraphQLSchema(resolvers: Resolvers.self)
+        let context = Context(
+            users: ["1" : .init(id: "1", name: "John", email: "john@example.com", age: 18, role: .user)],
+            posts: ["1" : .init(id: "1", title: "Foo", content: "bar", authorId: "1")]
+        )
+        #expect(
+            try await graphql(
+                schema: schema,
+                request: """
+                {
+                    posts {
+                        id
+                        title
+                        content
+                        author {
+                            id
+                            name
+                            email
+                            age
+                            role
+                        }
+                    }
+                }
+                """,
+                context: context
+            ) == .init(
+                data: [
+                    "posts": [
+                        [
+                            "id": "1",
+                            "title": "Foo",
+                            "content": "bar",
+                            "author": [
+                                "id": "1",
+                                "name": "John",
+                                "email": "john@example.com",
+                                "age": 18,
+                                "role": "USER"
+                            ]
+                        ]
+                    ]
+                ]
+            )
+        )
+    }
+
+    @Test func mutation() async throws {
+        let schema = try buildGraphQLSchema(resolvers: Resolvers.self)
+        let context = Context(
+            users: [:],
+            posts: [:]
+        )
+        #expect(
+            try await graphql(
+                schema: schema,
+                request: """
+                mutation {
+                    upsertUser(userInfo: {id: "2", name: "Jane", email: "jane@example.com"}) {
+                        id
+                        name
+                        email
+                        age
+                        role
+                    }
+                }
+                """,
+                context: context
+            ) == .init(
+                data: [
+                    "upsertUser": [
+                        "id": "2",
+                        "name": "Jane",
+                        "email": "jane@example.com",
+                        "age": nil,
+                        "role": nil
+                    ]
+                ]
+            )
+        )
+    }
+}