PHPLIB-616 Continuous Matrix Testing for 4.2 era drivers (#812)

* Skip failing tests for 4.2 driver

* Don't attempt to drop admin database in spec tests

Author: alcaeus

tests/Collection/CollectionFunctionalTest.php

@@ -381,7 +381,9 @@ public function testWithOptionsPassesOptions()
 
     /**
      * @group matrix-testing-server-4.4-driver-4.0
+     * @group matrix-testing-server-4.4-driver-4.2
      * @group matrix-testing-server-5.0-driver-4.0
+     * @group matrix-testing-server-5.0-driver-4.2
      */
     public function testMapReduce()
     {

tests/Model/IndexInfoFunctionalTest.php

@@ -47,7 +47,10 @@ public function testIs2dSphere()
         $this->assertEquals($expectedVersion, $index['2dsphereIndexVersion']);
     }
 
-    /** @group matrix-testing-server-5.0-driver-4.0 */
+    /**
+     * @group matrix-testing-server-5.0-driver-4.0
+     * @group matrix-testing-server-5.0-driver-4.2
+     */
     public function testIsGeoHaystack()
     {
         $indexName = $this->collection->createIndex(['pos' => 'geoHaystack', 'x' => 1], ['bucketSize' => 5]);

tests/Operation/ListCollectionsFunctionalTest.php

@@ -38,7 +38,9 @@ public function testListCollectionsForNewlyCreatedDatabase()
 
     /**
      * @group matrix-testing-server-4.4-driver-4.0
+     * @group matrix-testing-server-4.4-driver-4.2
      * @group matrix-testing-server-5.0-driver-4.0
+     * @group matrix-testing-server-5.0-driver-4.2
      */
     public function testIdIndexAndInfo()
     {

tests/Operation/MapReduceFunctionalTest.php

@@ -14,7 +14,9 @@
 
 /**
  * @group matrix-testing-server-4.4-driver-4.0
+ * @group matrix-testing-server-4.4-driver-4.2
  * @group matrix-testing-server-5.0-driver-4.0
+ * @group matrix-testing-server-5.0-driver-4.2
  */
 class MapReduceFunctionalTest extends FunctionalTestCase
 {

tests/SpecTests/FunctionalTestCase.php

@@ -186,6 +186,10 @@ protected function dropTestAndOutcomeCollections()
     {
         $context = $this->getContext();
 
+        if ($context->databaseName === 'admin') {
+            return;
+        }
+
         if ($context->bucketName !== null) {
             $bucket = $context->getGridFSBucket($context->defaultWriteOptions);
             $bucket->drop();

tests/SpecTests/RetryableReadsSpecTest.php

@@ -42,6 +42,9 @@ public static function assertCommandMatches(stdClass $expected, stdClass $actual
      * Execute an individual test case from the specification.
      *
      * @dataProvider provideTests
+     * @group matrix-testing-server-4.4-driver-4.2
+     * @group matrix-testing-server-5.0-driver-4.2
+     *
      * @param stdClass     $test           Individual "tests[]" document
      * @param array        $runOn          Top-level "runOn" array with server requirements
      * @param array|object $data           Top-level "data" array to initialize collection