feat: don't wait a whole second for DDL polling when using emulator (#285)

* faster DDL exec

* maxPollingDurationSeconds’ default is 0.0

Author: taka-oyama

src/Concerns/ManagesDataDefinitions.php

@@ -96,10 +96,18 @@ public function databaseExists()
      */
     protected function waitForOperation(LongRunningOperation $operation): mixed
     {
-        $result = $operation->pollUntilComplete(['maxPollingDurationSeconds' => 0.0]);
+        $options = [];
+
+        if (getenv('SPANNER_EMULATOR_HOST')) {
+            $options['pollingIntervalSeconds'] = 0.001;
+        }
+
+        $result = $operation->pollUntilComplete($options);
+
         if ($operation->error() !== null) {
             throw new RuntimeException((string) json_encode($operation->error()));
         }
+
         return $result;
     }
 }