PHPLIB-454: Remove test dependence on startAtOperationTime

tests/Operation/WatchFunctionalTest.php

@@ -402,20 +402,29 @@ class WatchFunctionalTest extends FunctionalTestCase
 
         $this->insertDocument(['_id' => 1]);
 
+        /* Insert a document and advance the change stream to ensure we capture
+         * a resume token. This is necessary when startAtOperationTime is not
+         * supported (i.e. 3.6 server version). */
+        $changeStream->next();
+        $this->assertTrue($changeStream->valid());
+        $this->assertSame(0, $changeStream->key());
+
+        $this->insertDocument(['_id' => 2]);
+
         /* Killing the cursor and advancing when there is a result will test
          * that next()'s resume attempt picks up the latest change. */
         $this->killChangeStreamCursor($changeStream);
 
         $changeStream->next();
         $this->assertTrue($changeStream->valid());
-        $this->assertSame(0, $changeStream->key());
+        $this->assertSame(1, $changeStream->key());
 
         $expectedResult = [
             '_id' => $changeStream->current()->_id,
             'operationType' => 'insert',
-            'fullDocument' => ['_id' => 1],
+            'fullDocument' => ['_id' => 2],
             'ns' => ['db' => $this->getDatabaseName(), 'coll' => $this->getCollectionName()],
-            'documentKey' => ['_id' => 1],
+            'documentKey' => ['_id' => 2],
         ];
 
         $this->assertMatchesDocument($expectedResult, $changeStream->current());
@@ -428,48 +437,48 @@ class WatchFunctionalTest extends FunctionalTestCase
 
         $changeStream->rewind();
         $this->assertTrue($changeStream->valid());
-        $this->assertSame(0, $changeStream->key());
+        $this->assertSame(1, $changeStream->key());
 
         $expectedResult = [
             '_id' => $changeStream->current()->_id,
             'operationType' => 'insert',
-            'fullDocument' => ['_id' => 1],
+            'fullDocument' => ['_id' => 2],
             'ns' => ['db' => $this->getDatabaseName(), 'coll' => $this->getCollectionName()],
-            'documentKey' => ['_id' => 1],
+            'documentKey' => ['_id' => 2],
         ];
 
         $this->assertMatchesDocument($expectedResult, $changeStream->current());
 
-        $this->insertDocument(['_id' => 2]);
+        $this->insertDocument(['_id' => 3]);
 
         $changeStream->next();
         $this->assertTrue($changeStream->valid());
-        $this->assertSame(1, $changeStream->key());
+        $this->assertSame(2, $changeStream->key());
 
         $expectedResult = [
             '_id' => $changeStream->current()->_id,
             'operationType' => 'insert',
-            'fullDocument' => ['_id' => 2],
+            'fullDocument' => ['_id' => 3],
             'ns' => ['db' => $this->getDatabaseName(), 'coll' => $this->getCollectionName()],
-            'documentKey' => ['_id' => 2],
+            'documentKey' => ['_id' => 3],
         ];
 
         $this->assertMatchesDocument($expectedResult, $changeStream->current());
 
         $this->killChangeStreamCursor($changeStream);
 
-        $this->insertDocument(['_id' => 3]);
+        $this->insertDocument(['_id' => 4]);
 
         $changeStream->next();
         $this->assertTrue($changeStream->valid());
-        $this->assertSame(2, $changeStream->key());
+        $this->assertSame(3, $changeStream->key());
 
         $expectedResult = [
             '_id' => $changeStream->current()->_id,
             'operationType' => 'insert',
-            'fullDocument' => ['_id' => 3],
+            'fullDocument' => ['_id' => 4],
             'ns' => ['db' => $this->getDatabaseName(), 'coll' => $this->getCollectionName()],
-            'documentKey' => ['_id' => 3],
+            'documentKey' => ['_id' => 4],
         ];
 
         $this->assertMatchesDocument($expectedResult, $changeStream->current());
@@ -480,18 +489,18 @@ class WatchFunctionalTest extends FunctionalTestCase
          * we'll see {_id: 3} returned again. */
         $this->killChangeStreamCursor($changeStream);
 
-        $this->insertDocument(['_id' => 4]);
+        $this->insertDocument(['_id' => 5]);
 
         $changeStream->next();
         $this->assertTrue($changeStream->valid());
-        $this->assertSame(3, $changeStream->key());
+        $this->assertSame(4, $changeStream->key());
 
         $expectedResult = [
             '_id' => $changeStream->current()->_id,
             'operationType' => 'insert',
-            'fullDocument' => ['_id' => 4],
+            'fullDocument' => ['_id' => 5],
             'ns' => ['db' => $this->getDatabaseName(), 'coll' => $this->getCollectionName()],
-            'documentKey' => ['_id' => 4],
+            'documentKey' => ['_id' => 5],
         ];
 
         $this->assertMatchesDocument($expectedResult, $changeStream->current());