test the quickstart example

apollo-router/src/plugins/connectors/testdata/quickstart.graphql

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+schema
+  @link(url: "https://specs.apollo.dev/link/v1.0")
+  @link(url: "https://specs.apollo.dev/join/v0.5", for: EXECUTION)
+  @join__directive(graphs: [CONNECTORS], name: "link", args: {url: "https://specs.apollo.dev/connect/v0.1", import: ["@connect", "@source"]})
+  @join__directive(graphs: [CONNECTORS], name: "source", args: {name: "jsonPlaceholder", http: {baseURL: "https://jsonplaceholder.typicode.com/"}})
+{
+  query: Query
+}
+
+directive @join__directive(graphs: [join__Graph!], name: String!, args: join__DirectiveArguments) repeatable on SCHEMA | OBJECT | INTERFACE | FIELD_DEFINITION
+
+directive @join__enumValue(graph: join__Graph!) repeatable on ENUM_VALUE
+
+directive @join__field(graph: join__Graph, requires: join__FieldSet, provides: join__FieldSet, type: String, external: Boolean, override: String, usedOverridden: Boolean, overrideLabel: String, contextArguments: [join__ContextArgument!]) repeatable on FIELD_DEFINITION | INPUT_FIELD_DEFINITION
+
+directive @join__graph(name: String!, url: String!) on ENUM_VALUE
+
+directive @join__implements(graph: join__Graph!, interface: String!) repeatable on OBJECT | INTERFACE
+
+directive @join__type(graph: join__Graph!, key: join__FieldSet, extension: Boolean! = false, resolvable: Boolean! = true, isInterfaceObject: Boolean! = false) repeatable on OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT | SCALAR
+
+directive @join__unionMember(graph: join__Graph!, member: String!) repeatable on UNION
+
+directive @link(url: String, as: String, for: link__Purpose, import: [link__Import]) repeatable on SCHEMA
+
+input join__ContextArgument {
+  name: String!
+  type: String!
+  context: String!
+  selection: join__FieldValue!
+}
+
+scalar join__DirectiveArguments
+
+scalar join__FieldSet
+
+scalar join__FieldValue
+
+enum join__Graph {
+  CONNECTORS @join__graph(name: "connectors", url: "none")
+}
+
+scalar link__Import
+
+enum link__Purpose {
+  """
+  `SECURITY` features provide metadata necessary to securely resolve fields.
+  """
+  SECURITY
+
+  """
+  `EXECUTION` features provide metadata necessary for operation execution.
+  """
+  EXECUTION
+}
+
+type Post
+  @join__type(graph: CONNECTORS)
+{
+  id: ID!
+  body: String
+  title: String
+  author: User
+}
+
+type Query
+  @join__type(graph: CONNECTORS)
+{
+  posts: [Post] @join__directive(graphs: [CONNECTORS], name: "connect", args: {source: "jsonPlaceholder", http: {GET: "/posts"}, selection: "id\ntitle\nbody\nauthor: { id: userId }"})
+  post(id: ID!): Post @join__directive(graphs: [CONNECTORS], name: "connect", args: {source: "jsonPlaceholder", http: {GET: "/posts/{$args.id}"}, selection: "id\ntitle\nbody\nauthor: { id: userId }", entity: true})
+  user(id: ID!): User @join__directive(graphs: [CONNECTORS], name: "connect", args: {source: "jsonPlaceholder", http: {GET: "/users/{$args.id}"}, selection: "id\nname\nusername", entity: true})
+}
+
+type User
+  @join__type(graph: CONNECTORS)
+{
+  id: ID!
+  name: String
+  username: String
+  posts: [Post] @join__directive(graphs: [CONNECTORS], name: "connect", args: {source: "jsonPlaceholder", http: {GET: "/users/{$this.id}/posts"}, selection: "id\ntitle\nbody"})
+}

apollo-router/src/plugins/connectors/testdata/quickstart.yaml

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+# rover supergraph compose --config apollo-router/src/plugins/connectors/testdata/quickstart.yaml > apollo-router/src/plugins/connectors/testdata/quickstart.graphql
+federation_version: =2.9.0-connectors.12
+subgraphs:
+  connectors:
+    routing_url: none
+    schema:
+      sdl: |
+        extend schema
+          @link(url: "https://specs.apollo.dev/federation/v2.8")
+          @link(
+            url: "https://specs.apollo.dev/connect/v0.1"
+            import: ["@connect", "@source"]
+          )
+          @source(
+            name: "jsonPlaceholder"
+            http: { baseURL: "https://jsonplaceholder.typicode.com/" }
+          )
+
+        type Post {
+          id: ID!
+          body: String
+          title: String
+          author: User
+        }
+
+        type User {
+          id: ID!
+          name: String
+          username: String
+          posts: [Post]
+            @connect(
+              source: "jsonPlaceholder"
+              http: { GET: "/users/{$$this.id}/posts" }
+              selection: """
+              id
+              title
+              body
+              """
+            )
+        }
+
+        type Query {
+          posts: [Post]
+            @connect(
+              source: "jsonPlaceholder"
+              http: { GET: "/posts" }
+              selection: """
+              id
+              title
+              body
+              author: { id: userId }
+              """
+            )
+          post(id: ID!): Post
+            @connect(
+              source: "jsonPlaceholder"
+              http: { GET: "/posts/{$$args.id}" }
+              selection: """
+              id
+              title
+              body
+              author: { id: userId }
+              """
+              entity: true
+            )
+          user(id: ID!): User
+            @connect(
+              source: "jsonPlaceholder"
+              http: { GET: "/users/{$$args.id}" }
+              selection: """
+              id
+              name
+              username
+              """
+              entity: true
+            )
+        }