def test_as_unit(self):
td = Timedelta(days=1)
assert td._as_unit("ns") is td
res = td._as_unit("us")
assert res.value == td.value // 1000
assert res._reso == NpyDatetimeUnit.NPY_FR_us.value
rt = res._as_unit("ns")
assert rt.value == td.value
assert rt._reso == td._reso
res = td._as_unit("ms")
assert res.value == td.value // 1_000_000
assert res._reso == NpyDatetimeUnit.NPY_FR_ms.value
rt = res._as_unit("ns")
assert rt.value == td.value
assert rt._reso == td._reso
res = td._as_unit("s")
assert res.value == td.value // 1_000_000_000
assert res._reso == NpyDatetimeUnit.NPY_FR_s.value
rt = res._as_unit("ns")
assert rt.value == td.value
assert rt._reso == td._reso
def test_as_unit(self):
td = Timedelta(days=1)
assert td._as_unit("ns") is td
res = td._as_unit("us")
assert res.value == td.value // 1000
assert res._reso == td._reso - 1
rt = res._as_unit("ns")
assert rt.value == td.value
assert rt._reso == td._reso
res = td._as_unit("ms")
assert res.value == td.value // 1_000_000
assert res._reso == td._reso - 2
rt = res._as_unit("ns")
assert rt.value == td.value
assert rt._reso == td._reso
res = td._as_unit("s")
assert res.value == td.value // 1_000_000_000
assert res._reso == td._reso - 3
rt = res._as_unit("ns")
assert rt.value == td.value
assert rt._reso == td._reso
def test_as_unit_rounding(self):
td = Timedelta(microseconds=1500)
res = td._as_unit("ms")
expected = Timedelta(milliseconds=1)
assert res == expected
assert res._reso == NpyDatetimeUnit.NPY_FR_ms.value
assert res.value == 1
with pytest.raises(ValueError, match="Cannot losslessly convert units"):
td._as_unit("ms", round_ok=False)
def test_as_unit_non_nano(self):
# case where we are going neither to nor from nano
td = Timedelta(days=1)._as_unit("ms")
assert td.days == 1
assert td.value == 86_400_000
assert td.components.days == 1
assert td._d == 1
assert td.total_seconds() == 86400
res = td._as_unit("us")
assert res.value == 86_400_000_000
assert res.components.days == 1
assert res.components.hours == 0
assert res._d == 1
assert res._h == 0
assert res.total_seconds() == 86400