def METHOD_NAME(self):
    self.tube_settings[Tags.STRUCTURE_START_MM] = [1, 0, 1]
    self.tube_settings[Tags.STRUCTURE_END_MM] = [1, 5, 1]
    self.tube_settings[Tags.STRUCTURE_RADIUS_MM] = 0.4
    ts = CircularTubularStructure(self.global_settings, self.tube_settings)
    assert 0 < ts.geometrical_volume[0, 0, 0] < 1
    assert 0 < ts.geometrical_volume[1, 0, 0] < 1
    assert 0 < ts.geometrical_volume[0, 1, 0] < 1
    assert 0 < ts.geometrical_volume[0, 0, 1] < 1
    assert 0 < ts.geometrical_volume[1, 1, 0] < 1
    assert 0 < ts.geometrical_volume[1, 0, 1] < 1
    assert 0 < ts.geometrical_volume[0, 1, 1] < 1
    assert 0 < ts.geometrical_volume[1, 1, 1] < 1