1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
import strawberry
def test_maybe_null_validation_rule_input_fields():
"""Test MaybeNullValidationRule validates input object fields correctly."""
@strawberry.input
class TestInput:
strict_field: strawberry.Maybe[str] # Should reject null
flexible_field: strawberry.Maybe[str | None] # Should allow null
@strawberry.type
class Query:
@strawberry.field
def hello(self) -> str:
return "world"
@strawberry.type
class Mutation:
@strawberry.mutation
def test(self, input: TestInput) -> str:
return "success"
schema = strawberry.Schema(query=Query, mutation=Mutation)
# Test 1: Valid values should work
result = schema.execute_sync("""
mutation {
test(input: { strictField: "hello", flexibleField: "world" })
}
""")
assert not result.errors
assert result.data == {"test": "success"}
# Test 2: Flexible field can be null
result = schema.execute_sync("""
mutation {
test(input: { strictField: "hello", flexibleField: null })
}
""")
assert not result.errors
assert result.data == {"test": "success"}
# Test 3: Strict field cannot be null
result = schema.execute_sync("""
mutation {
test(input: { strictField: null, flexibleField: "world" })
}
""")
assert result.errors
assert len(result.errors) == 1
error = result.errors[0]
assert "Expected value of type 'str', found null" in str(error)
assert "strictField" in str(error)
assert "cannot be explicitly set to null" in str(error)
assert "Use 'Maybe[str | None]'" in str(error)
def test_maybe_null_validation_rule_resolver_arguments():
"""Test MaybeNullValidationRule validates resolver arguments correctly."""
@strawberry.type
class Query:
@strawberry.field
def search(
self,
query: strawberry.Maybe[str] = None, # Should reject null
filter_by: strawberry.Maybe[str | None] = None, # Should allow null
) -> str:
return "success"
schema = strawberry.Schema(query=Query)
# Test 1: Valid values should work
result = schema.execute_sync("""
query {
search(query: "hello", filterBy: "world")
}
""")
assert not result.errors
assert result.data == {"search": "success"}
# Test 2: Flexible argument can be null
result = schema.execute_sync("""
query {
search(query: "hello", filterBy: null)
}
""")
assert not result.errors
assert result.data == {"search": "success"}
# Test 3: Strict argument cannot be null
result = schema.execute_sync("""
query {
search(query: null, filterBy: "world")
}
""")
assert result.errors
assert len(result.errors) == 1
error = result.errors[0]
assert "Expected value of type 'str', found null" in str(error)
assert "query" in str(error)
assert "cannot be explicitly set to null" in str(error)
assert "Use 'Maybe[str | None]'" in str(error)
def test_maybe_null_validation_rule_multiple_errors():
"""Test that multiple null violations are all reported."""
@strawberry.input
class TestInput:
field1: strawberry.Maybe[str]
field2: strawberry.Maybe[int]
field3: strawberry.Maybe[str | None] # This one allows null
@strawberry.type
class Query:
@strawberry.field
def hello(self) -> str:
return "world"
@strawberry.type
class Mutation:
@strawberry.mutation
def test(self, input: TestInput) -> str:
return "success"
schema = strawberry.Schema(query=Query, mutation=Mutation)
# Test with multiple nulls - should get multiple errors
result = schema.execute_sync("""
mutation {
test(input: { field1: null, field2: null, field3: null })
}
""")
assert result.errors
assert len(result.errors) == 2 # field1 and field2 should fail, field3 should pass
error_messages = [str(error) for error in result.errors]
assert any("field1" in msg for msg in error_messages)
assert any("field2" in msg for msg in error_messages)
# field3 should NOT generate an error because it allows null
def test_maybe_null_validation_rule_nested_input():
"""Test validation works with nested input objects."""
@strawberry.input
class NestedInput:
value: strawberry.Maybe[str]
@strawberry.input
class TestInput:
nested: NestedInput
@strawberry.type
class Query:
@strawberry.field
def hello(self) -> str:
return "world"
@strawberry.type
class Mutation:
@strawberry.mutation
def test(self, input: TestInput) -> str:
return "success"
schema = strawberry.Schema(query=Query, mutation=Mutation)
# Test with null in nested input
result = schema.execute_sync("""
mutation {
test(input: { nested: { value: null } })
}
""")
assert result.errors
assert len(result.errors) == 1
error = result.errors[0]
assert "Expected value of type 'str', found null" in str(error)
assert "value" in str(error)
def test_maybe_null_validation_rule_different_types():
"""Test validation works with different field types."""
@strawberry.input
class TestInput:
string_field: strawberry.Maybe[str]
int_field: strawberry.Maybe[int]
bool_field: strawberry.Maybe[bool]
list_field: strawberry.Maybe[list[str]]
@strawberry.type
class Query:
@strawberry.field
def hello(self) -> str:
return "world"
@strawberry.type
class Mutation:
@strawberry.mutation
def test(self, input: TestInput) -> str:
return "success"
schema = strawberry.Schema(query=Query, mutation=Mutation)
# Test each field type with null
test_cases = [
("stringField", "str"),
("intField", "int"),
("boolField", "bool"),
("listField", "list[str]"),
]
for field_name, type_name in test_cases:
result = schema.execute_sync(f"""
mutation {{
test(input: {{ {field_name}: null }})
}}
""")
assert result.errors
assert len(result.errors) == 1
error = result.errors[0]
assert f"Expected value of type '{type_name}', found null" in str(error)
def test_maybe_null_validation_rule_custom_graphql_names():
"""Test validation works with custom GraphQL field names."""
@strawberry.input
class TestInput:
internal_name: strawberry.Maybe[str] = strawberry.field(name="customName")
@strawberry.type
class Query:
@strawberry.field
def hello(self) -> str:
return "world"
@strawberry.type
class Mutation:
@strawberry.mutation
def test(self, input: TestInput) -> str:
return "success"
schema = strawberry.Schema(query=Query, mutation=Mutation)
# Test with custom GraphQL name
result = schema.execute_sync("""
mutation {
test(input: { customName: null })
}
""")
assert result.errors
assert len(result.errors) == 1
error = result.errors[0]
assert "customName" in str(error)
# TODO: Add test for auto_camel_case=False configuration
# This requires accessing the schema configuration from the validation rule context,
# which needs further investigation of the GraphQL validation context API.
|
