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import pytest
from django.db.migrations.writer import MigrationWriter
from timezone_field import TimeZoneField
from timezone_field.choices import standard
@pytest.fixture(
params=[
TimeZoneField(),
TimeZoneField(default="UTC"),
TimeZoneField(max_length=42),
TimeZoneField(choices=[("US/Pacific", "US/Pacific"), ("US/Eastern", "US/Eastern")]),
TimeZoneField(choices=[(b"US/Pacific", b"US/Pacific"), (b"US/Eastern", b"US/Eastern")]),
"use_pytz_1", # placeholder
"use_pytz_2", # placeholder
]
)
def field(request, to_tzobj, use_pytz):
yield (
TimeZoneField(use_pytz=use_pytz)
if request.param == "use_pytz_1"
else (
TimeZoneField(
choices=[
(to_tzobj("US/Pacific"), "US/Pacific"),
(to_tzobj("US/Eastern"), "US/Eastern"),
],
use_pytz=use_pytz,
)
if request.param == "use_pytz_2"
else request.param
)
)
def test_deconstruct(field):
_name, _path, args, kwargs = field.deconstruct()
new_field = TimeZoneField(*args, **kwargs)
assert field.max_length == new_field.max_length
assert field.choices == new_field.choices
def test_full_serialization(field):
# ensure the values passed to kwarg arguments can be serialized
# the recommended 'deconstruct' testing by django docs doesn't cut it
# https://docs.djangoproject.com/en/1.7/howto/custom-model-fields/#field-deconstruction
# replicates https://github.com/mfogel/django-timezone-field/issues/12
MigrationWriter.serialize(field) # should not throw
def test_from_db_value(utc_tzobj, use_pytz):
"""
Verify that the field can handle data coming back as bytes from the
db.
"""
field = TimeZoneField(use_pytz=use_pytz)
value = field.from_db_value(b"UTC", None, None)
assert utc_tzobj == value
def test_default_kwargs_not_frozen():
"""
Ensure the deconstructed representation of the field does not contain
kwargs if they match the default.
Don't want to bloat everyone's migration files.
"""
field = TimeZoneField()
_name, _path, _args, kwargs = field.deconstruct()
assert "choices" not in kwargs
assert "max_length" not in kwargs
def test_specifying_defaults_not_frozen(use_pytz, base_tzstrs):
"""
If someone's matched the default values with their kwarg args, we
shouldn't bothering freezing those
(excluding the use_pytz, which changes with your django version).
"""
field = TimeZoneField(max_length=63)
_name, _path, _args, kwargs = field.deconstruct()
assert "max_length" not in kwargs
choices = standard(base_tzstrs)
field = TimeZoneField(choices=choices, use_pytz=use_pytz)
_name, _path, _args, kwargs = field.deconstruct()
assert "choices" not in kwargs
@pytest.fixture(
params=[
[("US/Pacific", "US/Pacific"), ("US/Eastern", "US/Eastern")],
None, # placeholder for tz-engine-spefic value
]
)
def choices(request, to_tzobj):
yield (
request.param
if request.param is not None
else [
(to_tzobj("US/Pacific"), "US/Pacific"),
(to_tzobj("US/Eastern"), "US/Eastern"),
]
)
def test_deconstruct_when_using_choices(choices, use_pytz):
field = TimeZoneField(choices=choices, use_pytz=use_pytz)
_name, _path, _args, kwargs = field.deconstruct()
assert kwargs == {
**{
"choices": [
("US/Pacific", "US/Pacific"),
("US/Eastern", "US/Eastern"),
]
},
**({"use_pytz": use_pytz} if use_pytz is not None else {}),
}
@pytest.mark.parametrize(
"choices_display, expected_kwargs",
[
[None, {}],
["STANDARD", {"choices_display": "STANDARD"}],
["WITH_GMT_OFFSET", {"choices_display": "WITH_GMT_OFFSET"}],
],
)
def test_deconstruct_when_using_choices_display(choices_display, expected_kwargs):
field = TimeZoneField(choices_display=choices_display)
_name, _path, _args, kwargs = field.deconstruct()
assert kwargs == expected_kwargs
@pytest.mark.parametrize(
"choices, choices_display, expected_kwargs",
[
[
[["US/Pacific", "West Coast Time"]],
None,
{"choices": [("US/Pacific", "West Coast Time")]},
],
[
[["US/Pacific", "West Coast Time"]],
"STANDARD",
{"choices": [("US/Pacific", "")], "choices_display": "STANDARD"},
],
[
[["US/Pacific", "West Coast Time"]],
"WITH_GMT_OFFSET",
{"choices": [("US/Pacific", "")], "choices_display": "WITH_GMT_OFFSET"},
],
],
)
def test_deconstruct_when_using_choices_and_choices_display(choices, choices_display, expected_kwargs):
field = TimeZoneField(choices=choices, choices_display=choices_display)
_name, _path, _args, kwargs = field.deconstruct()
assert kwargs == expected_kwargs
def test_deconstruct_when_using_choices_and_choices_display_base_tzstrs(base_tzstrs, use_pytz):
choices = [[tz, "ignored"] for tz in base_tzstrs]
field = TimeZoneField(choices=choices, choices_display="WITH_GMT_OFFSET", use_pytz=use_pytz)
_name, _path, _args, kwargs = field.deconstruct()
assert kwargs == {"choices_display": "WITH_GMT_OFFSET", "use_pytz": use_pytz}
def test_deconstruct_when_using_use_pytz(use_pytz):
field = TimeZoneField(use_pytz=use_pytz)
_name, _path, _args, kwargs = field.deconstruct()
assert kwargs == {"use_pytz": use_pytz}
|
