fix setup tests

config/jest.config.js

@@ -6,6 +6,8 @@ module.exports = {
   verbose: true,
 
   rootDir: '../',
+  globalSetup: '<rootDir>/src/test/global-setup.js',
+  globalTeardown: '<rootDir>/src/test/global-teardown.js',
 
   projects: [
     {

src/test/global-setup.js

@@ -0,0 +1,9 @@
+const mongoUri = process.env.MONGOLAB_URI || process.env.MONGOHQ_URL || process.env.MONGO_URI || 'mongodb://localhost/growi_test';
+
+const mongoose = require('mongoose');
+
+module.exports = async() => {
+  await mongoose.connect(mongoUri, { useNewUrlParser: true });
+  await mongoose.connection.dropDatabase();
+  await mongoose.disconnect();
+};

src/test/global-teardown.js

@@ -0,0 +1,2 @@
+module.exports = async() => {
+};

src/test/setup.js

@@ -8,7 +8,6 @@ jest.setTimeout(30000); // default 5000
 
 beforeAll(async(done) => {
   await mongoose.connect(mongoUri, { useNewUrlParser: true });
-  await mongoose.connection.dropDatabase();
   done();
 });