add more tests

Author: imor

test/expected/issue_237_field_merging.out

@@ -191,6 +191,72 @@ begin;
  }
 (1 row)
 
+    select jsonb_pretty(graphql.resolve($$ {
+        accountCollection {
+            edges {
+                ... on AccountEdge {
+                    cursor
+                    cursor
+                    node {
+                        id
+                        email
+                    }
+                }
+                ... on AccountEdge {
+                    cursor
+                    cursor
+                    node {
+                        id
+                        email
+                    }
+                }
+                ... cursorsFragment
+                ... anotherCursorsFragment
+                cursor
+                cursor
+                node {
+                    id
+                    email
+                }
+            }
+        }
+    }
+    fragment cursorsFragment on AccountEdge {
+        cursor
+        cursor
+        node {
+            id
+            email
+        }
+    }
+    fragment anotherCursorsFragment on AccountEdge {
+        cursor
+        cursor
+        node {
+            id
+            email
+        }
+    }
+    $$));
+                   jsonb_pretty                    
+---------------------------------------------------
+ {                                                +
+     "data": {                                    +
+         "accountCollection": {                   +
+             "edges": [                           +
+                 {                                +
+                     "node": {                    +
+                         "id": 1,                 +
+                         "email": "aardvark@x.com"+
+                     },                           +
+                     "cursor": "WzFd"             +
+                 }                                +
+             ]                                    +
+         }                                        +
+     }                                            +
+ }
+(1 row)
+
     select jsonb_pretty(graphql.resolve($$ {
         accountCollection {
             edges {
@@ -219,7 +285,6 @@ begin;
             }
         }
     }
-
     $$));
                    jsonb_pretty                    
 ---------------------------------------------------

test/sql/issue_237_field_merging.sql

@@ -124,6 +124,54 @@ begin;
         'count', 1
     )));
 
+    select jsonb_pretty(graphql.resolve($$ {
+        accountCollection {
+            edges {
+                ... on AccountEdge {
+                    cursor
+                    cursor
+                    node {
+                        id
+                        email
+                    }
+                }
+                ... on AccountEdge {
+                    cursor
+                    cursor
+                    node {
+                        id
+                        email
+                    }
+                }
+                ... cursorsFragment
+                ... anotherCursorsFragment
+                cursor
+                cursor
+                node {
+                    id
+                    email
+                }
+            }
+        }
+    }
+    fragment cursorsFragment on AccountEdge {
+        cursor
+        cursor
+        node {
+            id
+            email
+        }
+    }
+    fragment anotherCursorsFragment on AccountEdge {
+        cursor
+        cursor
+        node {
+            id
+            email
+        }
+    }
+    $$));
+
     select jsonb_pretty(graphql.resolve($$ {
         accountCollection {
             edges {
@@ -152,7 +200,6 @@ begin;
             }
         }
     }
-
     $$));
 
 rollback;