text: import pytest
  
  from ..field import Field
  from ..objecttype import ObjectType
  from ..scalars import String
  from ..schema import Schema
  
  
  class MyOtherType(ObjectType):
      field = String()
  
  
  class Query(ObjectType):
      inner = Field(MyOtherType)
  
  
  def test_schema():
      schema = Schema(Query)
      assert schema.get_query_type() == schema.get_graphql_type(Query)
  
  
  def test_schema_get_type():
      schema = Schema(Query)
      assert schema.Query == Query
      assert schema.MyOtherType == MyOtherType
  
  
  def test_schema_get_type_error():
      schema = Schema(Query)
      with pytest.raises(AttributeError) as exc_info:
          schema.X
  
      assert str(exc_info.value) == 'Type "X" not found in the Schema'
  
  
  def test_schema_str():
      schema = Schema(Query)
      assert str(schema) == """schema {
    query: Query
  }
  
  type MyOtherType {
    field: String
  }
  
  type Query {
    inner: MyOtherType
  }
  """
  
  
  def test_schema_introspect():
      schema = Schema(Query)
      assert '__schema' in schema.introspect()
  