Update docs

Author: ardatan

docs/introduction/configuration.md

@@ -15,11 +15,17 @@ import { MyProvider } from './my-provider.ts';
 export interface MyModuleConfig {
     secretKey: string;
     remoteEndpoint: string;
+    someDbInstance: SomeDBInstance;
 }
 
+// You can access config object like below inside module declaration
 export const MyModule = new GraphQLModule<MyModuleConfig>({
-  providers: () => [
-    MyProvider
+  providers: ({ config: { someDbInstance } }) => [
+    MyProvider,
+    {
+      provide: SomeDbInstance,
+      useValue: someDbInstance
+    }
   ]
 });
 ```

docs/introduction/test-your-module.md

@@ -82,4 +82,19 @@ tests/user.module.spec.ts
   });
 ```
 
+If you don't use DI, you can mock your context or resolvers like below;
+
+```ts
+UsersModule.mock({
+  resolvers: {
+    Query: {
+      foo: (_, __, { fooProp }) => fooProp
+    }
+  },
+  contextBuilder: () => ({
+    fooProp: 'FOO'
+  })
+})
+```
+
 Then, run `jest` to get your test results.

jest.config.js

@@ -10,4 +10,5 @@ module.exports = {
   testRegex: '\\.spec\\.ts$',
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
   errorOnDeprecated: true,
+  forceExit: true,
 };