add tests for unwrapGenericType to handle generics for deep hierarchy

Author: jdorleans

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>com.graphql.kickstart</groupId>
     <artifactId>graphql-java-tools</artifactId>
-    <version>5.7.2-SNAPSHOT</version>
+    <version>5.7.3-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>GraphQL Java Tools</name>

src/test/kotlin/graphql/kickstart/tools/place/Entity.kt

@@ -0,0 +1,3 @@
+package graphql.kickstart.tools.place
+
+abstract class Entity(val id: String? = null)

src/test/kotlin/graphql/kickstart/tools/place/OtherPlace.kt

@@ -0,0 +1,7 @@
+package graphql.kickstart.tools.place
+
+abstract class OtherPlace<R : Review<*>>(id: String? = null) : Place<R>(id) {
+
+    val other: String? = null
+
+}

src/test/kotlin/graphql/kickstart/tools/place/Place.kt

@@ -0,0 +1,8 @@
+package graphql.kickstart.tools.place
+
+abstract class Place<R : Review<*>>(id: String? = null) : Entity(id) {
+
+    val name: String? = null
+    val reviews: MutableSet<R>? = null
+
+}

src/test/kotlin/graphql/kickstart/tools/place/Place1.kt

@@ -0,0 +1,3 @@
+package graphql.kickstart.tools.place
+
+class Place1(id: String? = null) : OtherPlace<Review1>(id)

src/test/kotlin/graphql/kickstart/tools/place/Place2.kt

@@ -0,0 +1,3 @@
+package graphql.kickstart.tools.place
+
+class Place2(id: String? = null) : OtherPlace<Review2>(id)

src/test/kotlin/graphql/kickstart/tools/place/PlaceTest.kt

@@ -0,0 +1,28 @@
+package graphql.kickstart.tools.place
+
+import graphql.ExecutionInput
+import graphql.GraphQL
+import graphql.kickstart.tools.GraphQLQueryResolver
+import graphql.kickstart.tools.SchemaParser
+import org.junit.Test
+
+class PlaceQuery : GraphQLQueryResolver {
+    fun places1(): List<Place1> = listOf(Place1("1"), Place1("2"), Place1("3"))
+    fun places2(): List<Place2> = listOf(Place2("4"), Place2("5"))
+}
+
+class PlaceTest {
+
+    @Test
+    fun shouldHandleGenericsDeepHierarchy() {
+        val schema = SchemaParser.newParser()
+                .file("place.graphqls")
+                .resolvers(PlaceQuery())
+                .build().makeExecutableSchema()
+        val gql = GraphQL.newGraphQL(schema).build()
+        val result = gql.execute(ExecutionInput.newExecutionInput().query("query { places1 { id } places2 { id } }").build())
+        assert(result.getData<Map<String, List<*>>>()["places1"]?.size == 3)
+        assert(result.getData<Map<String, List<*>>>()["places2"]?.size == 2)
+    }
+
+}

src/test/kotlin/graphql/kickstart/tools/place/Review.kt

@@ -0,0 +1,8 @@
+package graphql.kickstart.tools.place
+
+abstract class Review<T : Entity>(id: String? = null) : Entity(id) {
+
+    val rating: Int? = null
+    val content: T? = null
+
+}

src/test/kotlin/graphql/kickstart/tools/place/Review1.kt

@@ -0,0 +1,3 @@
+package graphql.kickstart.tools.place
+
+class Review1(id: String? = null) : Review<Place1>(id)

src/test/kotlin/graphql/kickstart/tools/place/Review2.kt

@@ -0,0 +1,3 @@
+package graphql.kickstart.tools.place
+
+class Review2(id: String? = null) : Review<Place2>(id)