test(introspection): cleanup test using tempy folder (#3170)

Co-authored-by: prisma-bot <prismabots@gmail.com>

src/packages/introspection/package.json

@@ -26,6 +26,7 @@
     "prettier": "2.0.5",
     "rimraf": "3.0.2",
     "strip-ansi": "6.0.0",
+    "tempy": "^0.6.0",
     "ts-jest": "26.1.4",
     "ts-node": "8.10.2",
     "typescript": "3.9.7"

src/packages/introspection/src/__tests__/init.test.ts

@@ -1,59 +1,55 @@
-import { join } from 'path'
-import { promisify } from 'util'
 import fs from 'fs'
-import rimraf from 'rimraf'
+import { join } from 'path'
+import tempy from 'tempy'
 import { Init, defaultSchema, defaultEnv } from '../commands/Init'
 import stripAnsi from 'strip-ansi'
 
-const del = promisify(rimraf)
-const tmp = join(__dirname, '../../prisma')
-
-beforeEach(async () => {
-  await del(tmp)
-})
-
-afterAll(async () => {
-  await del(tmp)
-})
-
 describe('init', () => {
   test('is schema and env written on disk replace', async () => {
+    const tmpDir = tempy.directory()
+    const cwd = process.cwd()
+    process.chdir(tmpDir)
+
     const init = Init.new()
     const result = stripAnsi(await init.parse([]))
 
-    const schema = fs.readFileSync(join(tmp, 'schema.prisma'), 'utf-8')
-    const env = fs.readFileSync(join(tmp, '.env'), 'utf-8')
+    expect(result).toMatchInlineSnapshot(`
+          "
+          ✔ Your Prisma schema was created at prisma/schema.prisma.
+            You can now open it in your favorite editor.
+
+          Next steps:
+          1. Set the DATABASE_URL in the .env file to point to your existing database. If your database has no tables yet, read https://pris.ly/d/getting-started.
+          2. Set the provider of the datasource block in schema.prisma to match your database: postgresql, mysql or sqlite.
+          3. Run prisma introspect to turn your database schema into a Prisma data model.
+          4. Run prisma generate to install Prisma Client. You can then start querying your database.
+
+          More information in our documentation:
+          https://pris.ly/d/getting-started
+              "
+      `)
 
+    const schema = fs.readFileSync(
+      join(tmpDir, 'prisma', 'schema.prisma'),
+      'utf-8',
+    )
     expect(schema).toMatch(defaultSchema())
-    expect(env).toMatch(defaultEnv())
-    expect(result).toMatchInlineSnapshot(`
-      "
-      ✔ Your Prisma schema was created at prisma/schema.prisma.
-        You can now open it in your favorite editor.
 
-      Next steps:
-      1. Set the DATABASE_URL in the .env file to point to your existing database. If your database has no tables yet, read https://pris.ly/d/getting-started.
-      2. Set the provider of the datasource block in schema.prisma to match your database: postgresql, mysql or sqlite.
-      3. Run prisma introspect to turn your database schema into a Prisma data model.
-      4. Run prisma generate to install Prisma Client. You can then start querying your database.
+    const env = fs.readFileSync(join(tmpDir, 'prisma', '.env'), 'utf-8')
+    expect(env).toMatch(defaultEnv())
 
-      More information in our documentation:
-      https://pris.ly/d/getting-started
-          "
-    `)
+    process.chdir(cwd)
   })
 
   test('works with url param', async () => {
+    const tmpDir = tempy.directory()
+    const cwd = process.cwd()
+    process.chdir(tmpDir)
+
     const init = Init.new()
     const result = stripAnsi(
       await init.parse(['--url', process.env.TEST_POSTGRES_URI!]),
     )
-
-    const schema = fs.readFileSync(join(tmp, 'schema.prisma'), 'utf-8')
-    const env = fs.readFileSync(join(tmp, '.env'), 'utf-8')
-
-    expect(schema).toMatch(defaultSchema())
-    expect(env).toMatch(defaultEnv(process.env.TEST_POSTGRES_URI!))
     expect(result).toMatchInlineSnapshot(`
       "
       ✔ Your Prisma schema was created at prisma/schema.prisma.
@@ -67,5 +63,16 @@ describe('init', () => {
       https://pris.ly/d/getting-started
           "
     `)
+
+    const schema = fs.readFileSync(
+      join(tmpDir, 'prisma', 'schema.prisma'),
+      'utf-8',
+    )
+    expect(schema).toMatch(defaultSchema())
+
+    const env = fs.readFileSync(join(tmpDir, 'prisma', '.env'), 'utf-8')
+    expect(env).toMatch(defaultEnv(process.env.TEST_POSTGRES_URI!))
+
+    process.chdir(cwd)
   })
 })