django-rest-framework/tests/test_bound_fields.py

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from rest_framework import serializers
class TestSimpleBoundField:
def test_empty_bound_field(self):
class ExampleSerializer(serializers.Serializer):
text = serializers.CharField(max_length=100)
amount = serializers.IntegerField()
serializer = ExampleSerializer()
assert serializer['text'].value == ''
assert serializer['text'].errors is None
assert serializer['text'].name == 'text'
assert serializer['amount'].value is None
assert serializer['amount'].errors is None
assert serializer['amount'].name == 'amount'
def test_populated_bound_field(self):
class ExampleSerializer(serializers.Serializer):
text = serializers.CharField(max_length=100)
amount = serializers.IntegerField()
serializer = ExampleSerializer(data={'text': 'abc', 'amount': 123})
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assert serializer.is_valid()
assert serializer['text'].value == 'abc'
assert serializer['text'].errors is None
assert serializer['text'].name == 'text'
assert serializer['amount'].value is 123
assert serializer['amount'].errors is None
assert serializer['amount'].name == 'amount'
def test_error_bound_field(self):
class ExampleSerializer(serializers.Serializer):
text = serializers.CharField(max_length=100)
amount = serializers.IntegerField()
serializer = ExampleSerializer(data={'text': 'x' * 1000, 'amount': 123})
serializer.is_valid()
assert serializer['text'].value == 'x' * 1000
assert serializer['text'].errors == ['Ensure this field has no more than 100 characters.']
assert serializer['text'].name == 'text'
assert serializer['amount'].value is 123
assert serializer['amount'].errors is None
assert serializer['amount'].name == 'amount'
def test_as_form_fields(self):
class ExampleSerializer(serializers.Serializer):
bool_field = serializers.BooleanField()
null_field = serializers.IntegerField(allow_null=True)
serializer = ExampleSerializer(data={'bool_field': False, 'null_field': None})
assert serializer.is_valid()
assert serializer['bool_field'].as_form_field().value == ''
assert serializer['null_field'].as_form_field().value == ''
class TestNestedBoundField:
def test_nested_empty_bound_field(self):
class Nested(serializers.Serializer):
more_text = serializers.CharField(max_length=100)
amount = serializers.IntegerField()
class ExampleSerializer(serializers.Serializer):
text = serializers.CharField(max_length=100)
nested = Nested()
serializer = ExampleSerializer()
assert serializer['text'].value == ''
assert serializer['text'].errors is None
assert serializer['text'].name == 'text'
assert serializer['nested']['more_text'].value == ''
assert serializer['nested']['more_text'].errors is None
assert serializer['nested']['more_text'].name == 'nested.more_text'
assert serializer['nested']['amount'].value is None
assert serializer['nested']['amount'].errors is None
assert serializer['nested']['amount'].name == 'nested.amount'
def test_as_form_fields(self):
class Nested(serializers.Serializer):
bool_field = serializers.BooleanField()
null_field = serializers.IntegerField(allow_null=True)
class ExampleSerializer(serializers.Serializer):
nested = Nested()
serializer = ExampleSerializer(data={'nested': {'bool_field': False, 'null_field': None}})
assert serializer.is_valid()
assert serializer['nested']['bool_field'].as_form_field().value == ''
assert serializer['nested']['null_field'].as_form_field().value == ''
def test_rendering_nested_fields_with_none_value(self):
from rest_framework.renderers import HTMLFormRenderer
class Nested1(serializers.Serializer):
text_field = serializers.CharField()
class Nested2(serializers.Serializer):
nested1 = Nested1(allow_null=True)
text_field = serializers.CharField()
class ExampleSerializer(serializers.Serializer):
nested2 = Nested2()
serializer = ExampleSerializer(data={'nested2': {'nested1': None, 'text_field': 'test'}})
assert serializer.is_valid()
renderer = HTMLFormRenderer()
for field in serializer:
rendered = renderer.render_field(field, {})
expected_packed = (
'<fieldset>'
'<legend>Nested2</legend>'
'<fieldset>'
'<legend>Nested1</legend>'
'<divclass="form-group">'
'<label>Textfield</label>'
'<inputname="nested2.nested1.text_field"class="form-control"type="text">'
'</div>'
'</fieldset>'
'<divclass="form-group">'
'<label>Textfield</label>'
'<inputname="nested2.text_field"class="form-control"type="text"value="test">'
'</div>'
'</fieldset>'
)
rendered_packed = ''.join(rendered.split())
assert rendered_packed == expected_packed