class_docstr: Test the get_dataset method.
docstr: Set up the instance.
code: def setUp(self):
      """Set up the instance."""
      self.exp = xr.DataArray(
          da.ones((3, 3)),
          name="1",
          dims=("y", "x"),
          coords={"acq_time": ("y", [0, 1, 2])},
          attrs={
              "name": "1",
              "platform_name": "spacecraft_name",
              "orbit_number": 123,
              "sensor": "sensor",
              "foo": "bar",
              "standard_name": "my_standard_name",
          },
      )
      self.exp.coords["acq_time"].attrs[
          "long_name"
      ] = "Mean scanline acquisition time"
      super().setUp()
  
imports: from datetime import datetime
  from unittest import TestCase, mock
  import dask.array
  import numpy
  import pytest
  import xarray
label_desc: Use image node_id 1 for calling the TestGetDataset obj's underlying member method code with example usage: obj.setUp() without return types