Improves some test stuff.

tests/model/test_model.py

@@ -14,6 +14,27 @@ def test_dotdipolemodel_m():
 	assert mod.m == 2
 
 
+def test_dotdipolemodel_cost():
+	mod = model.DotDipoleModel([model.DotMeasurement(1, (0, 0, 1)), model.DotMeasurement(2, (1, 0, 0))], 1)
+	costs = mod.costs()
+	jac = mod.jac()
+
+	pt_to_test = numpy.array((1, 2, 3, 4, 5, 6))
+	expected_cost = [-1.05408565512728256, -2.05293155269909457]
+	expected_jacobian = [
+		[
+			-0.007460090362383803, -0.009325112952979752, -0.009325112952979752,
+			0.007968732887091788, 0.00856214916591777, 0.006697126575321822
+		], [
+			-0.00512240832571883, -0.008537347209531383, -0.01024481665143766,
+			0.005098015905120168, 0.007927536694564856, 0.008488562368334061
+		]
+	]
+
+	numpy.testing.assert_allclose(costs(pt_to_test), expected_cost, err_msg="Costs aren't as expected.")
+	numpy.testing.assert_allclose(jac(pt_to_test), expected_jacobian, err_msg="Jacobian aren't as expected.")
+
+
 def print_result(msg, result):
 	print(msg)
 	print(f"\tResult: {result.x}")

tests/test_pathfinder.py

@@ -1,5 +1,6 @@
 from pathfinder import __version__
-
+import pathfinder
 
 def test_version():
 	assert __version__ == '0.0.1'
+	assert pathfinder.get_version() == __version__