Tentative test for bug #52

src/test/test_devbugs.py

@@ -72,4 +72,20 @@ def test_bug_git47(self):
         # It can also happen to the temperature
         T = w.state(T=300, p=[1, 1e10])['T']
         assert not np.isnan(T[0])
-        assert np.isnan(T[1])
+        assert np.isnan(T[1])
+
+    def test_bug_git52(self):
+        # ig, ig2, igmix, mp1
+        subs = [pm.get("ig.BH3O3"), pm.get("ig.O2"), pm.get('ig.air'), pm.get('mp.H2O')]
+
+        for sub in subs:
+            p = 1
+            T = 500
+            h = sub.h(T=T, p=p)
+            s = sub.s(T=T, p=p)
+            assert sub.T_s(s, p) == approx(sub.T_s(s=s, p=p))
+            assert sub.T_h(h, p) == approx(sub.T_h(h=h, p=p))
+            if hasattr(sub, "p_s"):
+                assert sub.p_s(s, T) == approx(sub.p_s(s=s, T=T))
+            if hasattr(sub, "d_s"):
+                assert sub.d_s(s, T) == approx(sub.d_s(s=s, T=T))