WIP

Author: tobias-tengler

src/HotChocolate/Fusion/test/Core.Tests/DemoIntegrationTests.cs

@@ -16,6 +16,83 @@ public class DemoIntegrationTests(ITestOutputHelper output)
 {
     private readonly Func<ICompositionLog> _logFactory = () => new TestCompositionLog(output);
 
+    [Fact]
+    public async Task Same_Selection_On_Two_Object_Types_That_Require_Data_From_Another_Subgraph()
+    {
+        // arrange
+        var subgraphA = await TestSubgraph.CreateAsync(
+            """
+            type Query {
+              item1: Item1!
+              item2: Item2!
+            }
+
+            type Item1 {
+              product: Product!
+            }
+
+            type Item2 {
+              product: Product!
+            }
+
+            type Product implements Node {
+              id: ID!
+            }
+
+            interface Node {
+              id: ID!
+            }
+            """);
+
+        var subgraphB = await TestSubgraph.CreateAsync(
+            """
+            type Query {
+              node(id: ID!): Node
+              nodes(ids: [ID!]!): [Node]!
+            }
+
+            type Product implements Node {
+              id: ID!
+              name: String!
+            }
+
+            interface Node {
+              id: ID!
+            }
+            """);
+
+        using var subgraphs = new TestSubgraphCollection(output, [subgraphA, subgraphB]);
+        var executor = await subgraphs.GetExecutorAsync();
+        var request = Parse("""
+                            query {
+                              item1 {
+                                product {
+                                  id
+                                  name
+                                }
+                              }
+                              item2 {
+                                product {
+                                  id
+                                  name
+                                }
+                              }
+                            }
+                            """);
+
+        // act
+        var result = await executor.ExecuteAsync(
+            OperationRequestBuilder
+                .New()
+                .SetDocument(request)
+                .Build());
+
+        // assert
+        var snapshot = new Snapshot();
+        CollectSnapshotData(snapshot, request, result);
+        await snapshot.MatchMarkdownAsync();
+    }
+
     [Fact]
     public async Task Same_Selection_On_Two_List_Fields_That_Require_Data_From_Another_Subgraph()
     {
@@ -29,8 +106,6 @@ interface Node {
             type Query {
               productsA: [Product]
               productsB: [Product]
-              node(id: ID!): Node
-              nodes(ids: [ID!]!): [Node]!
             }
 
             type Product implements Node {

src/HotChocolate/Fusion/test/Core.Tests/__snapshots__/DemoIntegrationTests.Same_Selection_On_Two_Object_Types_That_Require_Data_From_Another_Subgraph.md

@@ -0,0 +1,125 @@
+# Same_Selection_On_Two_Object_Types_That_Require_Data_From_Another_Subgraph
+
+## Result
+
+```json
+{
+  "data": {
+    "item1": {
+      "product": {
+        "id": "2",
+        "name": "string"
+      }
+    },
+    "item2": {
+      "product": {
+        "id": "1",
+        "name": "string"
+      }
+    }
+  }
+}
+```
+
+## Request
+
+```graphql
+{
+  item1 {
+    product {
+      id
+      name
+    }
+  }
+  item2 {
+    product {
+      id
+      name
+    }
+  }
+}
+```
+
+## QueryPlan Hash
+
+```text
+E78C88B24F708E43B14A881AD2A993668E068FE2
+```
+
+## QueryPlan
+
+```json
+{
+  "document": "{ item1 { product { id name } } item2 { product { id name } } }",
+  "rootNode": {
+    "type": "Sequence",
+    "nodes": [
+      {
+        "type": "Resolve",
+        "subgraph": "Subgraph_1",
+        "document": "query fetch_item1_item2_1 { item1 { product { id __fusion_exports__1: id } } item2 { product { id __fusion_exports__2: id } } }",
+        "selectionSetId": 0,
+        "provides": [
+          {
+            "variable": "__fusion_exports__1"
+          },
+          {
+            "variable": "__fusion_exports__2"
+          }
+        ]
+      },
+      {
+        "type": "Compose",
+        "selectionSetIds": [
+          0
+        ]
+      },
+      {
+        "type": "Parallel",
+        "nodes": [
+          {
+            "type": "Resolve",
+            "subgraph": "Subgraph_2",
+            "document": "query fetch_item1_item2_2($__fusion_exports__1: ID!) { node(id: $__fusion_exports__1) { ... on Product { name } } }",
+            "selectionSetId": 3,
+            "path": [
+              "node"
+            ],
+            "requires": [
+              {
+                "variable": "__fusion_exports__1"
+              }
+            ]
+          },
+          {
+            "type": "Resolve",
+            "subgraph": "Subgraph_2",
+            "document": "query fetch_item1_item2_3($__fusion_exports__2: ID!) { node(id: $__fusion_exports__2) { ... on Product { name } } }",
+            "selectionSetId": 4,
+            "path": [
+              "node"
+            ],
+            "requires": [
+              {
+                "variable": "__fusion_exports__2"
+              }
+            ]
+          }
+        ]
+      },
+      {
+        "type": "Compose",
+        "selectionSetIds": [
+          3,
+          4
+        ]
+      }
+    ]
+  },
+  "state": {
+    "__fusion_exports__1": "Product_id",
+    "__fusion_exports__2": "Product_id"
+  }
+}
+```
+