test(NODE-3072): serverless testing

.evergreen/config.yml

@@ -134,6 +134,24 @@ functions:
           MONGODB_API_VERSION="${MONGODB_API_VERSION}" \
           NODE_VERSION=${NODE_VERSION} SKIP_DEPS=${SKIP_DEPS|1} NO_EXIT=${NO_EXIT|1} \
             bash ${PROJECT_DIRECTORY}/.evergreen/run-tests.sh
+  run serverless tests:
+    - command: timeout.update
+      params:
+        exec_timeout_secs: 1800
+    - command: shell.exec
+      type: test
+      params:
+        working_dir: src
+        script: |
+          ${PREPARE_SHELL}
+          # Disable xtrace (just in case it was accidentally set).
+          set +x
+          MONGODB_URI="${MONGODB_URI}" \
+          MONGODB_API_VERSION="${MONGODB_API_VERSION}" \
+          AUTH="auth" SSL="ssl" SERVERLESS=1 \
+          SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
+          SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
+            bash ${PROJECT_DIRECTORY}/.evergreen/run-serverless-tests.sh
   start-load-balancer:
     - command: shell.exec
       params:
@@ -605,18 +623,12 @@ functions:
     - command: attach.xunit_results
       params:
         file: src/xunit.xml
-pre:
-  - func: fetch source
-  - func: prepare resources
-  - func: windows fix
-  - func: fix absolute paths
-  - func: make files executable
-post:
-  - func: upload test results
-  - func: cleanup
-ignore:
-  - '*.md'
 tasks:
+  - name: test-serverless
+    tags:
+      - serverless
+    commands:
+      - func: run serverless tests
   - name: test-latest-server
     tags:
       - latest
@@ -1689,6 +1701,51 @@ tasks:
       - func: run bson-ext test
         vars:
           NODE_LTS_NAME: erbium
+task_groups:
+  - name: serverless_task_group
+    setup_group_can_fail_task: true
+    setup_group_timeout_secs: 1800
+    setup_group:
+      - func: fetch source
+      - func: prepare resources
+      - command: shell.exec
+        params:
+          shell: bash
+          script: |
+            ${PREPARE_SHELL}
+            set +o xtrace
+            SERVERLESS_DRIVERS_GROUP=${SERVERLESS_DRIVERS_GROUP} \
+            SERVERLESS_API_PUBLIC_KEY=${SERVERLESS_API_PUBLIC_KEY} \
+            SERVERLESS_API_PRIVATE_KEY=${SERVERLESS_API_PRIVATE_KEY} \
+              bash ${DRIVERS_TOOLS}/.evergreen/serverless/create-instance.sh
+      - command: expansions.update
+        params:
+          file: serverless-expansion.yml
+    teardown_group:
+      - func: upload test results
+      - command: shell.exec
+        params:
+          script: |
+            ${PREPARE_SHELL}
+            set +o xtrace
+            SERVERLESS_DRIVERS_GROUP=${SERVERLESS_DRIVERS_GROUP} \
+            SERVERLESS_API_PUBLIC_KEY=${SERVERLESS_API_PUBLIC_KEY} \
+            SERVERLESS_API_PRIVATE_KEY=${SERVERLESS_API_PRIVATE_KEY} \
+            SERVERLESS_INSTANCE_NAME=${SERVERLESS_INSTANCE_NAME} \
+              bash ${DRIVERS_TOOLS}/.evergreen/serverless/delete-instance.sh
+    tasks:
+      - .serverless
+pre:
+  - func: fetch source
+  - func: prepare resources
+  - func: windows fix
+  - func: fix absolute paths
+  - func: make files executable
+post:
+  - func: upload test results
+  - func: cleanup
+ignore:
+  - '*.md'
 buildvariants:
   - name: macos-1014-erbium
     display_name: macOS 10.14 Node Erbium
@@ -1975,3 +2032,10 @@ buildvariants:
       - aws-4.4-auth-test-run-aws-auth-test-with-aws-credentials-as-environment-variables
       - aws-4.4-auth-test-run-aws-auth-test-with-aws-credentials-and-session-token-as-environment-variables
       - aws-4.4-auth-test-run-aws-ECS-auth-test
+  - name: ubuntu1804-test-serverless
+    display_name: Serverless Test
+    run_on: ubuntu1804-test
+    expansions:
+      NODE_LTS_NAME: erbium
+    tasks:
+      - serverless_task_group

.evergreen/config.yml.in

@@ -155,6 +155,25 @@ functions:
           NODE_VERSION=${NODE_VERSION} SKIP_DEPS=${SKIP_DEPS|1} NO_EXIT=${NO_EXIT|1} \
             bash ${PROJECT_DIRECTORY}/.evergreen/run-tests.sh
 
+  "run serverless tests":
+    - command: timeout.update
+      params:
+        exec_timeout_secs: 1800
+    - command: shell.exec
+      type: test
+      params:
+        working_dir: "src"
+        script: |
+          ${PREPARE_SHELL}
+          # Disable xtrace (just in case it was accidentally set).
+          set +x
+          MONGODB_URI="${MONGODB_URI}" \
+          MONGODB_API_VERSION="${MONGODB_API_VERSION}" \
+          AUTH="auth" SSL="ssl" SERVERLESS=1 \
+          SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
+          SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
+            bash ${PROJECT_DIRECTORY}/.evergreen/run-serverless-tests.sh
+
   "start-load-balancer":
     - command: shell.exec
       params:
@@ -648,6 +667,47 @@ functions:
       params:
         file: "src/xunit.xml"
 
+tasks:
+    - name: "test-serverless"
+      tags: ["serverless"]
+      commands:
+        - func: "run serverless tests"
+
+task_groups:
+  - name: serverless_task_group
+    setup_group_can_fail_task: true
+    setup_group_timeout_secs: 1800 # 30 minutes
+    setup_group:
+      - func: "fetch source"
+      - func: "prepare resources"
+      - command: shell.exec
+        params:
+          shell: "bash"
+          script: |
+            ${PREPARE_SHELL}
+            set +o xtrace
+            SERVERLESS_DRIVERS_GROUP=${SERVERLESS_DRIVERS_GROUP} \
+            SERVERLESS_API_PUBLIC_KEY=${SERVERLESS_API_PUBLIC_KEY} \
+            SERVERLESS_API_PRIVATE_KEY=${SERVERLESS_API_PRIVATE_KEY} \
+              bash ${DRIVERS_TOOLS}/.evergreen/serverless/create-instance.sh
+      - command: expansions.update
+        params:
+          file: serverless-expansion.yml
+    teardown_group:
+      - func: "upload test results"
+      - command: shell.exec
+        params:
+          script: |
+            ${PREPARE_SHELL}
+            set +o xtrace
+            SERVERLESS_DRIVERS_GROUP=${SERVERLESS_DRIVERS_GROUP} \
+            SERVERLESS_API_PUBLIC_KEY=${SERVERLESS_API_PUBLIC_KEY} \
+            SERVERLESS_API_PRIVATE_KEY=${SERVERLESS_API_PRIVATE_KEY} \
+            SERVERLESS_INSTANCE_NAME=${SERVERLESS_INSTANCE_NAME} \
+              bash ${DRIVERS_TOOLS}/.evergreen/serverless/delete-instance.sh
+    tasks:
+      - ".serverless"
+
 pre:
   - func: "fetch source"
   - func: "prepare resources"

.evergreen/generate_evergreen_tasks.js

@@ -626,6 +626,17 @@ SINGLETON_TASKS.push({
   ]
 });
 
+// special case for serverless testing
+BUILD_VARIANTS.push({
+  name: 'ubuntu1804-test-serverless',
+  display_name: 'Serverless Test',
+  run_on: 'ubuntu1804-test',
+  expansions: {
+    NODE_LTS_NAME: LOWEST_LTS
+  },
+  tasks: ['serverless_task_group']
+});
+
 const fileData = yaml.safeLoad(fs.readFileSync(`${__dirname}/config.yml.in`, 'utf8'));
 fileData.tasks = (fileData.tasks || []).concat(BASE_TASKS).concat(TASKS).concat(SINGLETON_TASKS);
 fileData.buildvariants = (fileData.buildvariants || []).concat(BUILD_VARIANTS);

.evergreen/run-serverless-tests.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+source "${PROJECT_DIRECTORY}/.evergreen/install-dependencies.sh"
+
+SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
+SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
+SERVERLESS=1 AUTH=auth SSL=ssl \
+MONGODB_URI=${MONGODB_URI} npx mocha \
+  test/functional/crud_spec.test.js \
+  test/functional/retryable_reads.test.js \
+  test/functional/retryable_writes.test.js \
+  test/functional/sessions.test.js \
+  test/functional/transactions.test.js \
+  test/functional/versioned-api.test.js

test/functional/crud_spec.test.js

@@ -20,6 +20,9 @@ function enforceServerVersionLimits(requires, scenario) {
   if (versionLimits.length) {
     requires.mongodb = versionLimits.join(' ');
   }
+  if (scenario.serverless) {
+    requires.serverless = scenario.serverless;
+  }
 }
 
 function findScenarios() {
@@ -35,7 +38,7 @@ const readScenarios = findScenarios('v1', 'read');
 const writeScenarios = findScenarios('v1', 'write');
 
 const testContext = {};
-describe('CRUD spec', function () {
+describe('CRUD spec v1', function () {
   beforeEach(function () {
     const configuration = this.configuration;
     const client = configuration.newClient();

test/functional/sessions.test.js

@@ -66,7 +66,11 @@ describe('Sessions', function () {
     });
 
     describe('withSession', {
-      metadata: { requires: { mongodb: '>=3.6.0' } },
+      metadata: {
+        requires: {
+          mongodb: '>=3.6.0'
+        }
+      },
       test: function () {
         beforeEach(function () {
           return test.setup(this.configuration);

test/functional/spec-runner/context.js

@@ -44,6 +44,12 @@ class TestRunnerContext {
     this.user = opts.user;
     this.password = opts.password;
     this.authSource = opts.authSource;
+    if (process.env.SERVERLESS) {
+      this.user = process.env.SERVERLESS_ATLAS_USER;
+      this.password = process.env.SERVERLESS_ATLAS_PASSWORD;
+      this.authSource = 'admin';
+      this.serverless = true;
+    }
     this.sharedClient = null;
     this.failPointClients = [];
     this.appliedFailPoints = [];

test/functional/spec-runner/index.js

@@ -7,6 +7,7 @@ const { EJSON } = require('bson');
 const { isRecord } = require('../../../src/utils');
 const TestRunnerContext = require('./context').TestRunnerContext;
 const resolveConnectionString = require('./utils').resolveConnectionString;
+const { shouldRunServerlessTest } = require('../../tools/utils');
 
 // Promise.try alternative https://stackoverflow.com/questions/60624081/promise-try-without-bluebird/60624164?noredirect=1#comment107255389_60624164
 function promiseTry(callback) {
@@ -110,7 +111,12 @@ function parseRunOn(runOn) {
     }
 
     const mongodb = version.join(' ');
-    return { topology, mongodb, authEnabled: !!config.authEnabled };
+    return {
+      topology,
+      mongodb,
+      authEnabled: !!config.authEnabled,
+      serverless: config.serverless
+    };
   });
 }
 
@@ -167,6 +173,13 @@ function shouldRunSpecTest(configuration, requires, spec, filter) {
     return false;
   }
 
+  if (
+    requires.serverless &&
+    !shouldRunServerlessTest(requires.serverless, !!process.env.SERVERLESS)
+  ) {
+    return false;
+  }
+
   if (
     spec.operations.some(
       op => op.name === 'waitForEvent' && op.arguments.event === 'PoolReadyEvent'
@@ -191,20 +204,23 @@ function prepareDatabaseForSuite(suite, context) {
 
   if (context.skipPrepareDatabase) return Promise.resolve();
 
-  const setupPromise = db
-    .admin()
-    .command({ killAllSessions: [] })
-    .catch(err => {
-      if (
-        err.message.match(/no such (cmd|command)/) ||
-        err.message.match(/Failed to kill on some hosts/) ||
-        err.code === 11601
-      ) {
-        return;
-      }
+  // Note: killAllSession is not supported on serverless, see CLOUDP-84298
+  const setupPromise = context.serverless
+    ? Promise.resolve()
+    : db
+        .admin()
+        .command({ killAllSessions: [] })
+        .catch(err => {
+          if (
+            err.message.match(/no such (cmd|command)/) ||
+            err.message.match(/Failed to kill on some hosts/) ||
+            err.code === 11601
+          ) {
+            return;
+          }
 
-      throw err;
-    });
+          throw err;
+        });
 
   if (context.collectionName == null || context.dbName === 'admin') {
     return setupPromise;