refactor: group testing logic under own dir (#905)

Author: Jason Kuhrt

src/lib/plugin/types/lens.ts

@@ -1,7 +1,7 @@
 import * as Logger from '@nexus/logger'
 import * as NexusSchema from '@nexus/schema'
 import * as Prompts from 'prompts'
-import * as Testing from '../../../runtime/testing'
+import * as Testing from '../../../testing/testing'
 import * as Layout from '../../layout'
 import * as PackageManager from '../../package-manager'
 import * as Process from '../../process'

src/testing.ts

@@ -0,0 +1 @@
+export { createTestContext, TestContext } from './testing'

src/testing/index.ts

@@ -1,14 +1,14 @@
 import { isLeft } from 'fp-ts/lib/Either'
 import getPort from 'get-port'
 import * as Lo from 'lodash'
-import app from '.'
 import { GraphQLClient } from '../lib/graphql-client'
 import * as Layout from '../lib/layout'
+import { rootLogger } from '../lib/nexus-logger'
 import * as PluginRuntime from '../lib/plugin'
 import * as PluginWorktime from '../lib/plugin/worktime'
-import { PrivateApp } from './app'
-import { createDevAppRunner } from './start'
-import { rootLogger } from '../lib/nexus-logger'
+import app from '../runtime'
+import { PrivateApp } from '../runtime/app'
+import { createDevAppRunner } from '../runtime/start'
 
 const pluginLogger = rootLogger.child('plugin')