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test_time.py
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import unittest.mock as mk
from datetime import datetime
import asdf
import numpy as np
import pytest
from asdf.testing.helpers import yaml_to_asdf
from astropy import units as u
from astropy.coordinates import EarthLocation
from astropy.time import Time
from asdf_astropy.testing.helpers import assert_time_equal
def create_times():
return [
Time(1950.0, format="byear"),
Time("B1950.0", format="byear_str"),
Time(
[1, 2],
location=EarthLocation(x=[1, 2] * u.m, y=[3, 4] * u.m, z=[5, 6] * u.m),
format="cxcsec",
),
Time(datetime(2000, 1, 2, 12, 0, 0), format="datetime"),
Time(2000.45, format="decimalyear"),
Time("2000-01-01T00:00:00.000", format="fits"),
Time(630720013.0, format="gps"),
Time("2000-01-01 00:00:00.000", format="iso"),
Time("2000-01-01T00:00:00.000", format="isot"),
Time(2451544.5, format="jd"),
Time(2000.0, format="jyear"),
Time(
"J2000.000",
location=EarthLocation(x=6378100 * u.m, y=0 * u.m, z=0 * u.m),
format="jyear_str",
),
Time(51544.0, format="mjd"),
Time(Time("2000-01-01T00:00:00.000").plot_date, format="plot_date"), # astropy/astropy#14080
Time(np.arange(100), format="unix"),
Time(946684800.0, format="unix_tai"),
Time("2000:001:00:00:00.000", format="yday"),
Time("2000-01-01T00:00:00.000"),
Time({"year": 2010, "month": 3, "day": 1}, format="ymdhms"),
Time(np.datetime64("2000-01-01T01:01:01"), format="datetime64"),
Time(["2001-01-02T12:34:56", "2001-02-03T00:01:02"]),
]
@pytest.mark.parametrize("time", create_times())
@pytest.mark.parametrize("version", asdf.versioning.supported_versions)
def test_serialization(time, version, tmp_path):
file_path = tmp_path / "test.asdf"
with asdf.AsdfFile(version=version) as af:
af["time"] = time
af.write_to(file_path)
with asdf.open(file_path) as af:
assert_time_equal(af["time"], time)
def create_examples():
return [
{"example": '!time/time-1.1.0 "2000-12-31T13:05:27.737"', "truth": Time("2000-12-31T13:05:27.737")},
{"example": '!time/time-1.1.0 "2001:003:04:05:06.789"', "truth": Time("2001:003:04:05:06.789")},
{"example": "!time/time-1.1.0 B2000.0", "truth": Time("B2000.0")},
{
"example": """!time/time-1.1.0
value: 2000.0
format: byear""",
"truth": Time(2000.0, format="byear"),
},
{
"example": """!time/time-1.1.0
["2000-12-31T13:05:27.737", "2000-12-31T13:06:38.444"]""",
"truth": Time(["2000-12-31T13:05:27.737", "2000-12-31T13:06:38.444"]),
},
{
"example": """!time/time-1.1.0
value: !core/ndarray-1.0.0
data: [2000, 2001]
datatype: float64
format: jyear""",
"truth": Time([2000, 2001], format="jyear"),
},
{
"example": """!time/time-1.1.0
value: !core/ndarray-1.0.0
value: 2000.0
format: jyear
scale: tdb
location:
x: !unit/quantity-1.1.0
value: 6378100
unit: !unit/unit-1.0.0 m
y: !unit/quantity-1.1.0
value: 0
unit: !unit/unit-1.0.0 m
z: !unit/quantity-1.1.0
value: 0
unit: !unit/unit-1.0.0 m
format: jyear""",
"truth": Time(
2000.0,
location=EarthLocation(x=6378100 * u.m, y=0 * u.m, z=0 * u.m),
scale="tdb",
format="jyear",
),
},
]
@pytest.mark.parametrize("example", create_examples())
def test_read_examples(example):
buff = yaml_to_asdf(f"example: {example['example'].strip()}", version="1.5.0")
with asdf.AsdfFile() as af:
af._open_impl(af, buff, mode="rw")
assert np.all(af["example"] == example["truth"])
def test_error():
from asdf_astropy.converters.time.time import TimeConverter
with mk.patch("asdf_astropy.converters.time.time._ASTROPY_FORMAT_TO_ASDF_FORMAT") as mock_time:
mock_time.get.return_value = "Bad time"
example = "2000-01-01 00:00:00.000"
with pytest.raises(ValueError, match=f"ASDF time '{example}' is not one of the recognized implicit formats"):
TimeConverter().from_yaml_tree(example, mk.MagicMock(), mk.MagicMock())
def create_formats():
from astropy.time.formats import TIME_FORMATS
formats = []
for format_ in TIME_FORMATS:
if format_ == "stardate":
# stardate is not a documented format for astropy
# https://docs.astropy.org/en/latest/time/index.html#time-format
continue
new = Time("B2000.0")
new.format = format_
formats.append(new)
return formats
@pytest.mark.parametrize("time", create_formats())
def test_formats(time, tmp_path):
atol = 1 * u.day if "jyear" in time.format else 1e-08 * u.day
file_path = tmp_path / "test.asdf"
with asdf.AsdfFile() as af:
af["time"] = time
af.write_to(file_path)
with asdf.open(file_path) as af:
assert af["time"].isclose(time, atol=atol)
assert af["time"].format == time.format
def create_str_formats():
return [
Time("2000-01-01 00:00:00.000", format="iso"),
Time("B2000.0", scale="utc", format="byear_str"),
Time("J2000.000", scale="utc", format="jyear_str"),
Time("2000:001:00:00:00.000", format="yday"),
]
@pytest.mark.parametrize("time", create_str_formats())
def test_str_format(time, tmp_path):
"""Test times that should serialize as strings"""
file_path = tmp_path / "test.asdf"
with asdf.AsdfFile() as af:
af["time"] = time
af.write_to(file_path)
with asdf.open(file_path, _force_raw_types=True) as af:
assert isinstance(af["time"], str)
assert str(af["time"]) == time.value
atol = 1 * u.day if "jyear" in time.format or "byear" in time.format else 1e-08 * u.day
with asdf.open(file_path) as af:
assert af["time"].isclose(time, atol=atol)
assert af["time"].format == time.format