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Represent serialized floats to python float precision #164

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Merged
merged 4 commits into from
Apr 2, 2022
+11 −2
Merged

Represent serialized floats to python float precision #164

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0ecb066
Represent serialized floats to approximately python float precision
bennyweise Apr 1, 2022
37ae08c
Use str method for float serialization
bennyweise Apr 2, 2022
bf2a8bc
Remove duplicated test
bennyweise Apr 2, 2022
fbded3d
Use str method for int serialization
bennyweise Apr 2, 2022
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7 changes: 5 additions & 2 deletions src/graphql/utilities/ast_from_value.py
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Original file line number Diff line number Diff line change
Expand Up @@ -115,9 +115,12 @@ def ast_from_value(value: Any, type_: GraphQLInputType) -> Optional[ValueNode]:

# Python ints and floats correspond nicely to Int and Float values.
if isinstance(serialized, int):
return IntValueNode(value=f"{serialized:d}")
return IntValueNode(value=str(serialized))
if isinstance(serialized, float) and isfinite(serialized):
return FloatValueNode(value=f"{serialized:g}")
value = str(serialized)
if value.endswith('.0'):
value = value[:-2]
return FloatValueNode(value=value)

if isinstance(serialized, str):
# Enum types use Enum literals.
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6 changes: 6 additions & 0 deletions tests/utilities/test_ast_from_value.py
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Expand Up @@ -86,6 +86,12 @@ def converts_float_values_to_float_asts():

assert ast_from_value(1e40, GraphQLFloat) == FloatValueNode(value="1e+40")

assert ast_from_value(123456789.01234567, GraphQLFloat) == FloatValueNode(
value="123456789.01234567"
)

assert ast_from_value(1.1, GraphQLFloat) == FloatValueNode(value="1.1")

def converts_string_values_to_string_asts():
assert ast_from_value("hello", GraphQLString) == StringValueNode(value="hello")

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