most of Val's comments addressed

.github/workflows/encryption-tests.yml

@@ -31,7 +31,5 @@ jobs:
           node-version: latest
       - name: Install Dependencies
         run: npm install
-      - name: Install mongodb-client-encryption
-        run: npm install mongodb-client-encryption
       - name: Run Tests
         run: npm run test-encryption

CONTRIBUTING.md

@@ -46,7 +46,8 @@ If you have a question about Mongoose (not a bug report) please post it to eithe
   * execute `npm run test-tsd` to run the typescript tests
   * execute `npm run ts-benchmark` to run the typescript benchmark "performance test" for a single time.
   * execute `npm run ts-benchmark-watch` to run the typescript benchmark "performance test" while watching changes on types folder. Note: Make sure to commit all changes before executing this command.
-* in order to run tests that require an cluster with encryption locally, run `npm run test-encryption`. Alternatively, you can start an encrypted cluster using the `scripts/configure-cluster-with-encryption.sh` file.
+* in order to run tests that require an cluster with encryption locally, run `npm run test-encryption`. Alternatively, you can start an encrypted cluster using the `scripts/configure-cluster-with-encryption.sh` file. 
+* These scripts can take a few minutes to run. If a encryption script is exited prematurely, restart the shell and delete the `data/` directory to ensure clean-up.
 
 ## Documentation
 

scripts/configure-cluster-with-encryption.sh

@@ -8,6 +8,9 @@ export CWD=$(pwd);
 mkdir data
 cd data
 
+# install encryption dependency
+npm install mongodb-client-encryption > /dev/null
+
 # note: 
   # we're using drivers-evergreen-tools which is a repo used by MongoDB drivers to start clusters for testing.  
   # if you'd like to make changes to the cluster settings, edit the exported variables below.

scripts/run-encryption-tests.sh

@@ -4,36 +4,20 @@
 
 export CWD=$(pwd);
 
+# install encryption dependency
+npm install mongodb-client-encryption > /dev/null
+
 # set up mongodb cluster and encryption configuration if the data/ folder does not exist
 # note: for tooling, cluster set-up and configuration look into the 'scripts/configure-cluster-with-encryption.sh' script
-
 if [ -d "data" ]; then
   cd data
 else
   source $CWD/scripts/configure-cluster-with-encryption.sh
 fi
 
-# extracts MONGOOSE_TEST_URI and CRYPT_SHARED_LIB_PATH from .yml file into environment variables for this test run
-read -r -d '' SOURCE_SCRIPT << EOM
-const fs = require('fs');
-const file = fs.readFileSync('mo-expansion.yml', { encoding: 'utf-8' })
-	.trim().split('\\n');
-const regex = /^(?<key>.*): "(?<value>.*)"$/;
-const variables = file.map(
-	(line) => regex.exec(line.trim()).groups
-).map(
-	({key, value}) => \`export \${key}='\${value}'\`
-).join('\n');
-
-process.stdout.write(variables);
-process.stdout.write('\n');
-EOM
-
-node --eval "$SOURCE_SCRIPT" | tee expansions.sh
-source expansions.sh
-
-export MONGOOSE_TEST_URI=$MONGODB_URI
-
 # run encryption tests
 cd ..
 npx mocha --exit ./test/encryption/*.test.js
+
+# uninstall encryption dependency
+npm uninstall mongodb-client-encryption > /dev/null

test/encryption/encryption.test.js

@@ -1,12 +1,31 @@
 'use strict';
 
 const assert = require('assert');
-const mdb = require('mongodb');
+const mongodb = require('mongodb');
+const fs = require('fs');
 const isBsonType = require('../../lib/helpers/isBsonType');
 
 const LOCAL_KEY = Buffer.from('Mng0NCt4ZHVUYUJCa1kxNkVyNUR1QURhZ2h2UzR2d2RrZzh0cFBwM3R6NmdWMDFBMUN3YkQ5aXRRMkhGRGdQV09wOGVNYUMxT2k3NjZKelhaQmRCZGJkTXVyZG9uSjFk', 'base64');
 
 describe('ci', () => {
+
+  const cachedUri = process.env.MONGOOSE_TEST_URI;
+  const cachedLib = process.env.CRYPT_SHARED_LIB_PATH;
+
+  before(function() {
+    const cwd = process.cwd();
+    const file = fs.readFileSync(cwd + '/data/mo-expansion.yml', { encoding: 'utf-8' }).trim().split('\n');
+    const regex = /^(?<key>.*): "(?<value>.*)"$/;
+    const variables = file.map((line) => regex.exec(line.trim()).groups).reduce((acc, { key, value }) => ({ ...acc, [key]: value }), {});
+    process.env.CRYPT_SHARED_LIB_PATH = variables.CRYPT_SHARED_LIB_PATH;
+    process.env.MONGOOSE_TEST_URI = variables.MONGODB_URI;
+  });
+
+  after(function() {
+    process.env.CRYPT_SHARED_LIB_PATH = cachedLib;
+    process.env.MONGOOSE_TEST_URI = cachedUri;
+  });
+
   describe('environmental variables', () => {
     it('MONGOOSE_TEST_URI is set', async function() {
       const uri = process.env.MONGOOSE_TEST_URI;
@@ -26,16 +45,16 @@ describe('ci', () => {
     let unencryptedClient;
 
     beforeEach(async function() {
-      keyVaultClient = new mdb.MongoClient(process.env.MONGOOSE_TEST_URI);
+      keyVaultClient = new mongodb.MongoClient(process.env.MONGOOSE_TEST_URI);
       await keyVaultClient.connect();
       await keyVaultClient.db('keyvault').collection('datakeys');
-      const clientEncryption = new mdb.ClientEncryption(keyVaultClient, {
+      const clientEncryption = new mongodb.ClientEncryption(keyVaultClient, {
         keyVaultNamespace: 'keyvault.datakeys',
         kmsProviders: { local: { key: LOCAL_KEY } }
       });
       dataKey = await clientEncryption.createDataKey('local');
 
-      encryptedClient = new mdb.MongoClient(
+      encryptedClient = new mongodb.MongoClient(
         process.env.MONGOOSE_TEST_URI,
         {
           autoEncryption: {
@@ -66,7 +85,7 @@ describe('ci', () => {
         }
       );
 
-      unencryptedClient = new mdb.MongoClient(process.env.MONGOOSE_TEST_URI);
+      unencryptedClient = new mongodb.MongoClient(process.env.MONGOOSE_TEST_URI);
     });
 
     afterEach(async function() {