code: def test_get_observation_time():
      """Test getting a pixel's observation time."""
      scan_params = nav.ScanningParameters(
          start_time_of_scan=50000.0,
          spinning_rate=100,
          num_sensors=1,
          sampling_angle=0.01,
      )
      pixel = nav.Pixel(11, 100)
      obs_time = nav.get_observation_time(pixel, scan_params)
      np.testing.assert_allclose(obs_time, 50000.0000705496871047)
  
imports: import numpy
  import pytest
  from satpy.tests.reader_tests.utils import get_jit_methods, skip_numba_unstable_if_missing
label_desc: Use image node_id 10 for calling a global function with example usage: test_get_observation_time() without return types