fixed datetime validation

Author: Teque5

tests/test_convert_blue.py

@@ -15,6 +15,7 @@
 import numpy as np
 
 import sigmf
+from sigmf.utils import SIGMF_DATETIME_ISO8601_FMT
 from sigmf.convert.blue import TYPE_MAP, blue_to_sigmf
 
 from .test_convert_wav import _validate_ncd
@@ -47,7 +48,9 @@ def setUp(self) -> None:
         ttt = np.linspace(0, num_samples / self.samp_rate, num_samples, endpoint=False)
         freq = 3520  # A7 note
         self.iq_data = (0.5 * np.exp(2j * np.pi * freq * ttt)).astype(np.complex64)
-        self.timecode = (datetime.now(timezone.utc) - datetime(1950, 1, 1, tzinfo=timezone.utc)).total_seconds()
+        time_now = datetime.now(timezone.utc)
+        self.datetime = time_now.strftime(SIGMF_DATETIME_ISO8601_FMT)
+        self.timecode = (time_now - datetime(1950, 1, 1, tzinfo=timezone.utc)).total_seconds()
 
     def tearDown(self) -> None:
         """clean up temporary directory"""
@@ -108,7 +111,7 @@ def test_blue_to_sigmf_pair(self) -> None:
             self.assertTrue(filenames["data_fn"].exists(), "dataset path missing")
             self.assertTrue(filenames["meta_fn"].exists(), "metadata path missing")
             self.assertEqual(meta.sample_rate, self.samp_rate)
-            self.assertEqual(meta.get_global_field("blue:fixed")["timecode"], self.timecode)
+            self.assertEqual(meta.get_capture_info(0)["core:datetime"], self.datetime)
             # verify data
             if format[0] == "S":
                 np.testing.assert_allclose(self.iq_data.real, meta[:], atol=atol)
@@ -124,7 +127,7 @@ def test_blue_to_sigmf_archive(self) -> None:
             filenames = sigmf.sigmffile.get_sigmf_filenames(sigmf_path)
             self.assertTrue(filenames["archive_fn"].exists(), "archive path missing")
             self.assertEqual(meta.sample_rate, self.samp_rate)
-            self.assertEqual(meta.get_global_field("blue:fixed")["timecode"], self.timecode)
+            self.assertEqual(meta.get_capture_info(0)["core:datetime"], self.datetime)
             # verify data
             if format[0] == "S":
                 np.testing.assert_allclose(self.iq_data.real, meta[:], atol=atol)
@@ -138,7 +141,7 @@ def test_blue_to_sigmf_ncd(self) -> None:
             meta = blue_to_sigmf(self.blue_path)
             _validate_ncd(self, meta, self.blue_path)
             self.assertEqual(meta.sample_rate, self.samp_rate)
-            self.assertEqual(meta.get_global_field("blue:fixed")["timecode"], self.timecode)
+            self.assertEqual(meta.get_capture_info(0)["core:datetime"], self.datetime)
             # verify data
             if format[0] == "S":
                 np.testing.assert_allclose(self.iq_data.real, meta[:], atol=atol)