Update assertions to use pytest.approx for precision

Author: andr1976

tests/test_ramdecom.py

@@ -13,8 +13,8 @@ def test_pure_run_coolprop():
     ws = wavespeed.WaveSpeed(input)
     ws.run()
     assert ws.T[-1] == pytest.approx(278.0666028440005, rel=1e-5)
-    assert ws.P[-1] == 3961000.0
-    assert ws.rho_mass[-1] == 362.33658068836274
+    assert ws.P[-1] == pytest.approx(3961000.0, rel=1e-5)
+    assert ws.rho_mass[-1] == pytest.approx(362.33658068836274, rel=1e-5)
 
 def test_pure_run_coolprop_extended():
     input = {}
@@ -27,8 +27,8 @@ def test_pure_run_coolprop_extended():
     ws = wavespeed.WaveSpeed(input)
     ws.run()
     assert ws.T[-1] == pytest.approx(283.67432227384006, rel=1e-5)
-    assert ws.P[-1] ==  4561000.0
-    assert ws.rho_mass[-1] == 454.99417292135354
+    assert ws.P[-1] ==  pytest.approx(4561000.0, rel=1e-5)
+    assert ws.rho_mass[-1] == pytest.approx(454.99417292135354, rel=1e-5)
 
 
 def test_pure_run_refprop():