runEnsureTablesTest example

->willReturnMap([
        ['migrate_map_sql_idmap_test', FALSE],
        ['migrate_message_sql_idmap_test', FALSE],
      ]);
    $schema->expects($this->exactly(2))
      ->method('createTable')
      ->withConsecutive(
        ['migrate_map_sql_idmap_test', $map_table_schema],
        ['migrate_message_sql_idmap_test', $table_schema],
      );

    $this->runEnsureTablesTest($schema);
  }

  /** * Tests the ensureTables method when the tables exist. */
  public function testEnsureTablesExist() {
    $schema = $this->getMockBuilder('Drupal\Core\Database\Schema')
      ->disableOriginalConstructor()
      ->getMock();
    $schema->expects($this->exactly(1))
      ->method('tableExists')