ci: add mongosh integration testing (#2698)

NODE-2940

Author: addaleax

.evergreen/config.yml

@@ -137,6 +137,14 @@ functions:
         script: |
           ${PREPARE_SHELL}
           bash ${PROJECT_DIRECTORY}/.evergreen/run-checks.sh
+  run mongosh integration tests:
+    - command: shell.exec
+      type: test
+      params:
+        working_dir: src
+        script: |
+          ${PREPARE_SHELL}
+          bash ${PROJECT_DIRECTORY}/.evergreen/run-mongosh-integration-tests.sh
   cleanup:
     - command: shell.exec
       params:
@@ -1132,6 +1140,15 @@ tasks:
         vars:
           NODE_LTS_NAME: erbium
       - func: run checks
+  - name: run-mongosh-integration-tests
+    tags:
+      - run-mongosh-integration-tests
+    exec_timeout_secs: 3600
+    commands:
+      - func: install dependencies
+        vars:
+          NODE_LTS_NAME: fermium
+      - func: run mongosh integration tests
 buildvariants:
   - name: macos-1014-dubnium
     display_name: macOS 10.14 Node Dubnium
@@ -1359,6 +1376,11 @@ buildvariants:
     run_on: rhel70
     tasks:
       - run-checks
+  - name: mongosh_integration_tests
+    display_name: mongosh integration tests
+    run_on: ubuntu1804-test
+    tasks:
+      - run-mongosh-integration-tests
   - name: ubuntu1804-test-mongodb-aws
     display_name: MONGODB-AWS Auth test
     run_on: ubuntu1804-test

.evergreen/config.yml.in

@@ -159,6 +159,15 @@ functions:
           ${PREPARE_SHELL}
           bash ${PROJECT_DIRECTORY}/.evergreen/run-checks.sh
 
+  "run mongosh integration tests":
+    - command: shell.exec
+      type: test
+      params:
+        working_dir: "src"
+        script: |
+          ${PREPARE_SHELL}
+          bash ${PROJECT_DIRECTORY}/.evergreen/run-mongosh-integration-tests.sh
+
   "cleanup":
     - command: shell.exec
       params:
@@ -253,7 +262,7 @@ functions:
         script: |
           MONGODB_URI='${plain_auth_mongodb_uri}' NODE_LTS_NAME='${NODE_LTS_NAME}' \
           bash ${PROJECT_DIRECTORY}/.evergreen/run-ldap-tests.sh
-  
+
   "run data lake tests":
       - command: shell.exec
         type: test
@@ -262,7 +271,7 @@ functions:
           script: |
             MONGODB_URI='mongodb://mhuser:pencil@localhost' NODE_LTS_NAME='${NODE_LTS_NAME}' \
             bash ${PROJECT_DIRECTORY}/.evergreen/run-data-lake-tests.sh
-  
+
   "run tls tests":
     - command: shell.exec
       type: test

.evergreen/generate_evergreen_tasks.js

@@ -484,8 +484,30 @@ BUILD_VARIANTS.push({
   tasks: ['run-checks']
 });
 
-// special case for MONGODB-AWS authentication
+// singleton build variant for mongosh integration tests
+SINGLETON_TASKS.push({
+  name: 'run-mongosh-integration-tests',
+  tags: ['run-mongosh-integration-tests'],
+  exec_timeout_secs: 3600,
+  commands: [
+    {
+      func: 'install dependencies',
+      vars: {
+        NODE_LTS_NAME: 'fermium'
+      }
+    },
+    { func: 'run mongosh integration tests' }
+  ]
+});
 
+BUILD_VARIANTS.push({
+  name: 'mongosh_integration_tests',
+  display_name: 'mongosh integration tests',
+  run_on: 'ubuntu1804-test',
+  tasks: ['run-mongosh-integration-tests']
+});
+
+// special case for MONGODB-AWS authentication
 BUILD_VARIANTS.push({
   name: 'ubuntu1804-test-mongodb-aws',
   display_name: 'MONGODB-AWS Auth test',

.evergreen/run-mongosh-integration-tests.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -o errexit  # Exit the script with error if any of the commands fail
+set -o xtrace   # Write all commands first to stderr
+
+export PROJECT_DIRECTORY="$(pwd)"
+NODE_ARTIFACTS_PATH="${PROJECT_DIRECTORY}/node-artifacts"
+export NVM_DIR="${NODE_ARTIFACTS_PATH}/nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+
+npm pack | tee npm-pack.log
+export TARBALL_FILENAME="$(tail -n1 npm-pack.log)"
+cd /tmp
+git clone --depth=10 https://github.com/mongodb-js/mongosh.git
+cd mongosh
+export REPLACE_PACKAGE="mongodb:${PROJECT_DIRECTORY}/${TARBALL_FILENAME}"
+npm run test-nodedriver