def test_not_implemented(self):
# Arrange
p = hm.Projection()
coords = 0
# Act / Assert
with self.assertRaisesRegex(NotImplementedError, ""):
p.project(coords)
with self.assertRaisesRegex(NotImplementedError, ""):
p.inverse_project(coords)
def test_units(self):
'''Test projection units.'''
p = hm.Projection()
p.pixels_per_degree = 2
self.assertAlmostEqual(p.pixels_per_degree, 2.0)
self.assertAlmostEqual(p.meters_per_pixel, 55659.7453966)
p.meters_per_pixel = 500
self.assertAlmostEqual(p.pixels_per_degree, 222.63898158654)
self.assertAlmostEqual(p.meters_per_pixel, 500)
def test_no_pixels_per_degree(self):
# Arrange
p = hm.Projection()
# Act
scaled = p.is_scaled()
# Assert
self.assertFalse(scaled)
with self.assertRaisesRegex(AttributeError,
"projection scale was never set"):
p.get_pixels_per_degree()
def test_has_pixels_per_degree(self):
# Arrange
p = hm.Projection()
p.pixels_per_degree = 2
# Act
scaled = p.is_scaled()
ppd = p.get_pixels_per_degree()
# Assert
self.assertTrue(scaled)
self.assertEqual(ppd, 2)