Tests for invalid and format_error

Author: Cito

README.md

@@ -13,7 +13,7 @@ a query language for APIs created by Facebook.
 
 The current version 1.0.0rc2 of GraphQL-core-next is up-to-date with GraphQL.js
 version 14.0.0rc2. All parts of the API are covered by an extensive test
-suite of currently 1562 unit tests.
+suite of currently 1569 unit tests.
 
 
 ## Documentation

graphql/error/format_error.py

@@ -1,6 +1,6 @@
 from typing import Any, Dict, TYPE_CHECKING
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from .graphql_error import GraphQLError  # noqa: F401
 
 

graphql/error/graphql_error.py

@@ -3,7 +3,7 @@
 from .format_error import format_error
 from .print_error import print_error
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from ..language.ast import Node  # noqa
     from ..language.location import SourceLocation  # noqa
     from ..language.source import Source  # noqa

graphql/error/located_error.py

@@ -2,7 +2,7 @@
 
 from .graphql_error import GraphQLError
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from ..language.ast import Node  # noqa
 
 __all__ = ['located_error']

graphql/error/print_error.py

@@ -2,7 +2,7 @@
 from functools import reduce
 from typing import List, Optional, Tuple, TYPE_CHECKING
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from .graphql_error import GraphQLError  # noqa: F401
     from ..language import Source, SourceLocation  # noqa: F401
 

graphql/language/location.py

@@ -1,6 +1,6 @@
 from typing import NamedTuple, TYPE_CHECKING
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from .source import Source  # noqa: F401
 
 __all__ = ['get_location', 'SourceLocation']

graphql/language/visitor.py

@@ -7,7 +7,7 @@
 
 from .ast import Node
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from ..utilities import TypeInfo  # noqa: F401
 
 __all__ = [

graphql/type/definition.py

@@ -18,7 +18,7 @@
 from ..pyutils import MaybeAwaitable, cached_property
 from ..utilities.value_from_ast_untyped import value_from_ast_untyped
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from .schema import GraphQLSchema  # noqa: F401
 
 __all__ = [

tests/error/test_format_error.py

@@ -0,0 +1,29 @@
+from pytest import raises
+
+from graphql.error import GraphQLError, format_error
+from graphql.language import Node, Source
+
+
+def describe_format_error():
+
+    def throw_if_not_an_error():
+        with raises(ValueError):
+            format_error(None)
+
+    def format_graphql_error():
+        source = Source("""
+            query {
+              something
+            }""")
+        path = ['one', 2]
+        extensions = {'ext': None}
+        error = GraphQLError(
+            'test message', Node(), source, [14, 40], path,
+            ValueError('original'), extensions=extensions)
+        assert error == {
+            'message': 'test message', 'locations': [(2, 14), (3, 20)],
+            'path': path, 'extensions': extensions}
+
+    def add_default_message():
+        error = format_error(GraphQLError(None))
+        assert error['message'] == 'An unknown error occurred.'

tests/error/test_invalid.py

@@ -0,0 +1,23 @@
+from graphql.error import INVALID
+
+
+def describe_invalid():
+
+    def has_repr():
+        assert repr(INVALID) == '<INVALID>'
+
+    def has_str():
+        assert str(INVALID) == 'INVALID'
+
+    def as_bool_is_false():
+        assert bool(INVALID) is False
+
+    def only_equal_to_itself():
+        assert INVALID == INVALID
+        assert not INVALID != INVALID
+        none_object = None
+        assert INVALID != none_object
+        assert not INVALID == none_object
+        false_object = False
+        assert INVALID != false_object
+        assert not INVALID == false_object