Dave Long
--- a/core/modules/pgsql/tests/src/Unit/SchemaTest.php
+++ b/core/modules/pgsql/tests/src/Unit/SchemaTest.php
+
+    $statement = $this->prophesize('\Drupal\Core\Database\StatementInterface');
+    $statement->fetchField()->willReturn($max_identifier_length);
+    $connection->query('SHOW max_identifier_length')->willReturn($statement->reveal());

-    $this->connection->expects($this->exactly(2))
-      ->method('query')
-      ->withConsecutive(
-        [$this->anything()],
-        ["SELECT 1 FROM pg_constraint WHERE conname = '$expected'"],
-      )
-      ->willReturnOnConsecutiveCalls(
-        $statement,
-        $this->createMock('\Drupal\Core\Database\StatementInterface'),
-      );
+    $connection->query("SELECT 1 FROM pg_constraint WHERE conname = '$expected'")
-    $connection->query("SELECT 1 FROM pg_constraint WHERE conname = '$expected'")
+    $connection->query(Argument::containingString($expected))