diff --git a/interfaces/cython/cantera/test/__init__.py b/interfaces/cython/cantera/test/__init__.py
index 407f24ec7..16306f1db 100644
--- a/interfaces/cython/cantera/test/__init__.py
+++ b/interfaces/cython/cantera/test/__init__.py
@@ -2,3 +2,6 @@ from .test_thermo import *
 from .test_kinetics import *
 from .test_transport import *
 from .test_mixture import *
+from .test_func1 import *
+from .test_reactor import *
+from .test_onedim import *
diff --git a/interfaces/cython/cantera/test/test_func1.py b/interfaces/cython/cantera/test/test_func1.py
new file mode 100644
index 000000000..811944114
--- /dev/null
+++ b/interfaces/cython/cantera/test/test_func1.py
@@ -0,0 +1,12 @@
+import unittest
+import numpy as np
+
+import cantera as ct
+from . import utilities
+
+class TestFunc1(utilities.CanteraTest):
+    def test_sin(self):
+        f = ct.Sin1(3)
+        self.assertNear(f(0), np.sin(0))
+        self.assertNear(f(0.1), np.sin(3*0.1))
+        self.assertNear(f(0.7), np.sin(3*0.7))
diff --git a/interfaces/cython/cantera/test/test_onedim.py b/interfaces/cython/cantera/test/test_onedim.py
new file mode 100644
index 000000000..9bf07c784
--- /dev/null
+++ b/interfaces/cython/cantera/test/test_onedim.py
@@ -0,0 +1,22 @@
+import cantera as ct
+from . import utilities
+
+class TestOnedim(utilities.CanteraTest):
+    def test_instantiate(self):
+        gas = ct.Solution('h2o2.xml')
+
+        flame = ct.FreeFlame(gas)
+
+    def test_badInstantiate(self):
+        solid = ct.Solution('diamond.xml', 'diamond')
+        with self.assertRaises(TypeError):
+            flame = ct.FreeFlame(solid)
+
+    def test_instantiateSurface(self):
+        gas = ct.Solution('diamond.xml', 'gas')
+        solid = ct.Solution('diamond.xml', 'diamond')
+        interface = ct.Solution('diamond.xml', 'diamond_100', (gas, solid))
+
+        surface = ct.ReactingSurface1D()
+        surface.setKinetics(interface)
+
diff --git a/interfaces/cython/cantera/test/test_reactor.py b/interfaces/cython/cantera/test/test_reactor.py
new file mode 100644
index 000000000..31036360e
--- /dev/null
+++ b/interfaces/cython/cantera/test/test_reactor.py
@@ -0,0 +1,46 @@
+import unittest
+import numpy as np
+
+import cantera as ct
+from . import utilities
+
+class TestReactor(utilities.CanteraTest):
+    def setUp(self):
+        self.gas1 = ct.Solution('h2o2.xml')
+        self.gas2 = ct.Solution('h2o2.xml')
+        X = np.zeros(self.gas1.nSpecies)
+        X[3] = 1.0
+        self.gas2.setMoleFractions(X)
+
+        self.r1 = ct.Reactor(self.gas1)
+        self.r2 = ct.Reactor(self.gas2)
+
+    def test_disjoint(self):
+        T1 = self.gas1.temperature
+        T2 = self.gas2.temperature
+        P1 = self.gas1.pressure
+        P2 = self.gas2.pressure
+
+        net = ct.ReactorNet()
+        net.addReactor(self.r1)
+        net.addReactor(self.r2)
+        net.advance(1.0)
+
+        # Nothing should change from the initial condition
+        self.assertNear(T1, self.gas1.temperature)
+        self.assertNear(T2, self.gas2.temperature)
+        self.assertNear(P1, self.gas1.pressure)
+        self.assertNear(P2, self.gas2.pressure)
+
+    def test_equalizePressure(self):
+        w = ct.Wall()
+        w.install(self.r1, self.r2)
+        w.expansionRateCoeff = 0.1
+        w.area = 1.0
+
+        net = ct.ReactorNet()
+        net.addReactor(self.r1)
+        net.addReactor(self.r2)
+
+        net.advance(1.0)
+        self.assertNear(self.gas1.pressure, self.gas2.pressure)
diff --git a/interfaces/cython/cantera/test/test_thermo.py b/interfaces/cython/cantera/test/test_thermo.py
index 7cb778ebf..215a8afc8 100644
--- a/interfaces/cython/cantera/test/test_thermo.py
+++ b/interfaces/cython/cantera/test/test_thermo.py
@@ -27,3 +27,15 @@ class TestThermoPhase(utilities.CanteraTest):
     def test_getState(self):
         self.assertNear(self.phase.pressure, ct.OneAtm)
         self.assertNear(self.phase.temperature, 300)
+
+
+class TestInterfacePhase(utilities.CanteraTest):
+    def setUp(self):
+        self.gas = ct.Solution('diamond.xml', 'gas')
+        self.solid = ct.Solution('diamond.xml', 'diamond')
+        self.interface = ct.Solution('diamond.xml', 'diamond_100',
+                                      (self.gas, self.solid))
+
+    def test_properties(self):
+        self.interface.siteDensity = 100
+        self.assertEqual(self.interface.siteDensity, 100)
\ No newline at end of file