From f6ff0ab9c785273e3ceeac6b9d636c5ec519a008 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Mon, 7 Sep 2020 22:01:49 +0200
Subject: Validate fragments on composite types

---
 tests/Language/GraphQL/ValidateSpec.hs | 37 ++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'tests/Language/GraphQL')

diff --git a/tests/Language/GraphQL/ValidateSpec.hs b/tests/Language/GraphQL/ValidateSpec.hs
index 990555e..a95c4d6 100644
--- a/tests/Language/GraphQL/ValidateSpec.hs
+++ b/tests/Language/GraphQL/ValidateSpec.hs
@@ -336,3 +336,40 @@ spec =
                     , path = []
                     }
              in validate queryString `shouldBe` Seq.singleton expected
+
+        it "rejects fragments on scalar types" $
+            let queryString = [r|
+              {
+                dog {
+                  ...fragOnScalar
+                }
+              }
+              fragment fragOnScalar on Int {
+                name
+              }
+            |]
+                expected = Error
+                    { message =
+                        "Fragment cannot condition on non composite type \
+                        \\"Int\"."
+                    , locations = [AST.Location 7 15]
+                    , path = []
+                    }
+             in validate queryString `shouldBe` Seq.singleton expected
+
+        it "rejects inline fragments on scalar types" $
+            let queryString = [r|
+              {
+                ... on Boolean {
+                  name
+                }
+              }
+            |]
+                expected = Error
+                    { message =
+                        "Fragment cannot condition on non composite type \
+                        \\"Boolean\"."
+                    , locations = [AST.Location 3 17]
+                    , path = []
+                    }
+             in validate queryString `shouldBe` Seq.singleton expected
-- 
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