diff --git a/test/py2llvm.py b/test/py2llvm.py
index 63c98fa18..13703281b 100644
--- a/test/py2llvm.py
+++ b/test/py2llvm.py
@@ -123,6 +123,30 @@ def arith_encode(op, a, b, c, d):
     return f.numerator*1000 + f.denominator
 
 
+def arith_encode_int(op, a, b, x):
+    if op == 1:
+        f = Fraction(a, b) - x
+    elif op == 2:
+        f = Fraction(a, b) + x
+    elif op == 3:
+        f = Fraction(a, b) * x
+    else:
+        f = Fraction(a, b) / x
+    return f.numerator*1000 + f.denominator
+
+
+def arith_encode_int_rev(op, a, b, x):
+    if op == 1:
+        f = x - Fraction(a, b)
+    elif op == 2:
+        f = x + Fraction(a, b)
+    elif op == 3:
+        f = x * Fraction(a, b)
+    else:
+        f = x / Fraction(a, b)
+    return f.numerator*1000 + f.denominator
+
+
 def array_test():
     a = array(array(2, 5), 5)
     a[3][2] = 11
@@ -136,6 +160,12 @@ def array_test():
     return acc
 
 
+def _frac_test_range():
+    for i in range(5, 10):
+        yield i
+        yield -i
+
+
 class CodeGenCase(unittest.TestCase):
     def test_is_prime(self):
         is_prime_c = CompiledFunction(is_prime, {"x": base_types.VInt()})
@@ -145,8 +175,8 @@ class CodeGenCase(unittest.TestCase):
     def test_frac_simplify(self):
         simplify_encode_c = CompiledFunction(
             simplify_encode, {"a": base_types.VInt(), "b": base_types.VInt()})
-        for a in range(5, 20):
-            for b in range(5, 20):
+        for a in _frac_test_range():
+            for b in _frac_test_range():
                 self.assertEqual(
                     simplify_encode_c(a, b), simplify_encode(a, b))
 
@@ -156,10 +186,10 @@ class CodeGenCase(unittest.TestCase):
                 "op": base_types.VInt(),
                 "a": base_types.VInt(), "b": base_types.VInt(),
                 "c": base_types.VInt(), "d": base_types.VInt()})
-        for a in range(5, 10):
-            for b in range(5, 10):
-                for c in range(5, 10):
-                    for d in range(5, 10):
+        for a in _frac_test_range():
+            for b in _frac_test_range():
+                for c in _frac_test_range():
+                    for d in _frac_test_range():
                         self.assertEqual(
                             arith_encode_c(op, a, b, c, d),
                             arith_encode(op, a, b, c, d))
@@ -176,6 +206,35 @@ class CodeGenCase(unittest.TestCase):
     def test_frac_div(self):
         self._test_frac_arith(3)
 
+    def _test_frac_arith_int(self, op, rev):
+        f = arith_encode_int_rev if rev else arith_encode_int
+        f_c = CompiledFunction(f, {
+            "op": base_types.VInt(),
+            "a": base_types.VInt(), "b": base_types.VInt(),
+            "x": base_types.VInt()})
+        for a in _frac_test_range():
+            for b in _frac_test_range():
+                for x in _frac_test_range():
+                    self.assertEqual(
+                        f_c(op, a, b, x),
+                        f(op, a, b, x))
+
+    def test_frac_add_int(self):
+        self._test_frac_arith_int(0, False)
+        self._test_frac_arith_int(0, True)
+
+    def test_frac_sub_int(self):
+        self._test_frac_arith_int(1, False)
+        self._test_frac_arith_int(1, True)
+
+    def test_frac_mul_int(self):
+        self._test_frac_arith_int(2, False)
+        self._test_frac_arith_int(2, True)
+
+    def test_frac_div_int(self):
+        self._test_frac_arith_int(3, False)
+        self._test_frac_arith_int(3, True)
+
     def test_array(self):
         array_test_c = CompiledFunction(array_test, dict())
         self.assertEqual(array_test_c(), array_test())