Merge pull request #633

.travis.yml

@@ -50,6 +50,10 @@ matrix:
     - php: 7.3
       env:
         - DEPLOYMENT=STANDALONE_SSL
+    - php: 7.3
+      env:
+        - SERVER_VERSION=3.6.13
+        - DEPLOYMENT=REPLICASET
     - php: 7.3
       env:
         - DEPLOYMENT=REPLICASET

tests/SpecTests/ChangeStreamsProseTest.php

@@ -42,6 +42,10 @@ class ChangeStreamsProseTest extends FunctionalTestCase
      */
     public function testProseTest5($errorCode)
     {
+        if (version_compare($this->getServerVersion(), '4.0.0', '<')) {
+            $this->markTestSkipped('failCommand is not supported');
+        }
+
         $this->configureFailPoint([
             'configureFailPoint' => 'failCommand',
             'mode' => ['times' => 1],