From 0199cca386dc8a7b10de2b9f2eafab4592a5ceec Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Mon, 31 Dec 2018 15:18:38 -0500
Subject: [PATCH] test: start coverage of core renderer module

Relates to #373
---
 .../graphqlgen/src/generators/common.spec.ts  | 147 ++++++++++++++++++
 packages/graphqlgen/src/generators/common.ts  |   4 +-
 2 files changed, 149 insertions(+), 2 deletions(-)
 create mode 100644 packages/graphqlgen/src/generators/common.spec.ts

diff --git a/packages/graphqlgen/src/generators/common.spec.ts b/packages/graphqlgen/src/generators/common.spec.ts
new file mode 100644
index 00000000..27b3c2bd
--- /dev/null
+++ b/packages/graphqlgen/src/generators/common.spec.ts
@@ -0,0 +1,147 @@
+import * as Common from './common'
+
+it('deepResolveInputTypes', () => {
+  const typeMap: Common.InputTypesMap = {
+    A: {
+      name: 'A',
+      type: {
+        name: 'A',
+        isInput: true,
+        isEnum: false,
+        isInterface: false,
+        isObject: false,
+        isScalar: false,
+        isUnion: false,
+      },
+      fields: [
+        {
+          name: 'b',
+          arguments: [],
+          type: {
+            name: 'B',
+            isInput: true,
+            isEnum: false,
+            isInterface: false,
+            isObject: false,
+            isScalar: false,
+            isUnion: false,
+            isRequired: false,
+            isArray: false,
+          },
+        },
+        {
+          name: 'c',
+          arguments: [],
+          type: {
+            name: 'C',
+            isInput: true,
+            isEnum: false,
+            isInterface: false,
+            isObject: false,
+            isScalar: false,
+            isUnion: false,
+            isRequired: false,
+            isArray: false,
+          },
+        },
+      ],
+    },
+    B: {
+      name: 'B',
+      type: {
+        name: 'B',
+        isInput: true,
+        isEnum: false,
+        isInterface: false,
+        isObject: false,
+        isScalar: false,
+        isUnion: false,
+      },
+      fields: [
+        {
+          name: 'd',
+          arguments: [],
+          type: {
+            name: 'D',
+            isInput: true,
+            isEnum: false,
+            isInterface: false,
+            isObject: false,
+            isScalar: false,
+            isUnion: false,
+            isRequired: false,
+            isArray: false,
+          },
+        },
+      ],
+    },
+    C: {
+      name: 'C',
+      type: {
+        name: 'C',
+        isInput: true,
+        isEnum: false,
+        isInterface: false,
+        isObject: false,
+        isScalar: false,
+        isUnion: false,
+      },
+      fields: [
+        {
+          name: 'd',
+          arguments: [],
+          type: {
+            name: 'D',
+            isInput: true,
+            isEnum: false,
+            isInterface: false,
+            isObject: false,
+            isScalar: false,
+            isUnion: false,
+            isRequired: false,
+            isArray: false,
+          },
+        },
+      ],
+    },
+    D: {
+      name: 'D',
+      type: {
+        name: 'D',
+        isInput: true,
+        isEnum: false,
+        isInterface: false,
+        isObject: false,
+        isScalar: false,
+        isUnion: false,
+      },
+      fields: [
+        {
+          name: 'foo',
+          arguments: [],
+          type: {
+            name: 'String',
+            isInput: false,
+            isEnum: false,
+            isInterface: false,
+            isObject: false,
+            isScalar: true,
+            isUnion: false,
+            isRequired: false,
+            isArray: false,
+          },
+        },
+      ],
+    },
+  }
+
+  expect(Common.deepResolveInputTypes(typeMap, 'A')).toMatchInlineSnapshot(`
+Array [
+  "A",
+  "B",
+  "D",
+  "C",
+  "D",
+]
+`)
+})
diff --git a/packages/graphqlgen/src/generators/common.ts b/packages/graphqlgen/src/generators/common.ts
index 3a698b01..7f11148e 100644
--- a/packages/graphqlgen/src/generators/common.ts
+++ b/packages/graphqlgen/src/generators/common.ts
@@ -229,10 +229,10 @@ export function getTypeFromGraphQLType(
   return 'string'
 }
 
-function deepResolveInputTypes(
+export function deepResolveInputTypes(
   inputTypesMap: InputTypesMap,
   typeName: string,
-  seen: { [k: string]: boolean } = {},
+  seen: Record<string, boolean> = {},
 ): string[] {
   const type = inputTypesMap[typeName]
   if (type) {