Ensure these tests only run with wiredTiger engine

Author: derickr

tests/manager/manager-executeReadCommand-001.phpt

@@ -2,7 +2,7 @@
 MongoDB\Driver\Manager::executeReadCommand()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
-<?php NEEDS('STANDALONE'); CLEANUP(STANDALONE); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); ?>
+<?php NEEDS('STANDALONE'); CLEANUP(STANDALONE); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); NEEDS_STORAGE_ENGINE(STANDALONE, "wiredTiger"); ?>
 --FILE--
 <?php
 require_once __DIR__ . "/../utils/basic.inc";

tests/server/server-executeReadCommand-001.phpt

@@ -2,7 +2,7 @@
 MongoDB\Driver\Server::executeReadCommand()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
-<?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); CLEANUP(STANDALONE); ?>
+<?php NEEDS('STANDALONE'); CLEANUP(STANDALONE); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); NEEDS_STORAGE_ENGINE(STANDALONE, "wiredTiger"); ?>
 --FILE--
 <?php
 require_once __DIR__ . "/../utils/basic.inc";

tests/utils/tools.php

@@ -156,6 +156,25 @@ function NEEDS_ATLEAST_MONGODB_VERSION($uri, $version) {
     }
 }
 
+function NEEDS_STORAGE_ENGINE($uri, $engine) {
+    $manager = new MongoDB\Driver\Manager($uri);
+    $cmd = new MongoDB\Driver\Command(["serverStatus" => 1]);
+    $rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::RP_PRIMARY);
+
+    try {
+        $cursor = $manager->executeCommand("admin", $cmd, $rp);
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
+        $document = current($cursor->toArray());
+
+        if ($document['storageEngine']['name'] != $engine) {
+            echo "skip Needs storage engine '$engine', but is '{$document['storageEngine']['name']}'";
+        }
+    } catch(Exception $e) {
+        echo "skip (needs version); $uri ($version): " . $e->getCode(), ": ", $e->getMessage();
+        exit(1);
+    }
+}
+
 function CLEANUP($uri, $dbname = DATABASE_NAME, $collname = COLLECTION_NAME) {
     try {
         $manager = new MongoDB\Driver\Manager($uri);