Add test for empty interfaces case

graphql · Aug 16, 2019 · dfc2da9 · dfc2da9
1 parent 2570536
commit dfc2da9
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/utilities/__tests__/buildASTSchema-test.js b/src/utilities/__tests__/buildASTSchema-test.js
@@ -88,6 +88,12 @@ describe('Schema Builder', () => {
     const sdl = dedent`
       type EmptyType
     `;
+
+    const definition = parse(sdl).definitions[0];
+    expect(
+      definition.kind === 'InterfaceTypeDefinition' && definition.interfaces,
+    ).to.equal([], 'The interfaces property must be an empty array.');
+
     expect(cycleSDL(sdl)).to.equal(sdl);
   });