diff --git a/tests/basics/gen_yield_from_close.py b/tests/basics/gen_yield_from_close.py
index 674e117a08..d66691ff9c 100644
--- a/tests/basics/gen_yield_from_close.py
+++ b/tests/basics/gen_yield_from_close.py
@@ -99,3 +99,25 @@ try:
     g.close()
 except RuntimeError:
     print('RuntimeError')
+
+# case where close is propagated up to a built-in iterator
+def gen8():
+    g = reversed([2, 1])
+    yield from g
+g = gen8()
+print(next(g))
+g.close()
+
+# case with a user-defined close method
+class Iter:
+    def __iter__(self):
+        return self
+    def __next__(self):
+        return 1
+    def close(self):
+        print('close')
+def gen9():
+    yield from Iter()
+g = gen9()
+print(next(g))
+g.close()
diff --git a/tests/basics/int_big_add.py b/tests/basics/int_big_add.py
new file mode 100644
index 0000000000..f0c3336d05
--- /dev/null
+++ b/tests/basics/int_big_add.py
@@ -0,0 +1,11 @@
+# tests transition from small to large int representation by addition
+
+# 31-bit overflow
+i = 0x3fffffff
+print(i + i)
+print(-i + -i)
+
+# 63-bit overflow
+i = 0x3fffffffffffffff
+print(i + i)
+print(-i + -i)
diff --git a/tests/basics/iter1.py b/tests/basics/iter1.py
index 5bd7f5090b..9117dfd2b7 100644
--- a/tests/basics/iter1.py
+++ b/tests/basics/iter1.py
@@ -9,6 +9,15 @@ try:
 except TypeError:
     print('TypeError')
 
+# this class has no __next__ implementation
+class NotIterable:
+    def __iter__(self):
+        return self
+try:
+    print(all(NotIterable()))
+except TypeError:
+    print('TypeError')
+
 class MyStopIteration(StopIteration):
     pass
 
diff --git a/tests/basics/try2.py b/tests/basics/try2.py
index 5827699e90..11e60b3c22 100644
--- a/tests/basics/try2.py
+++ b/tests/basics/try2.py
@@ -22,6 +22,15 @@ try:
 except NameError:
     print("except 1")
 
+# raised exception not contained in except tuple
+try:
+    try:
+        raise Exception
+    except (RuntimeError, SyntaxError):
+        print('except 2')
+except Exception:
+    print('except 1')
+
 # Check that exceptions across function boundaries work as expected
 def func1():
     try:
diff --git a/tests/float/complex1.py b/tests/float/complex1.py
index ebe4b0f37c..027d12583c 100644
--- a/tests/float/complex1.py
+++ b/tests/float/complex1.py
@@ -75,6 +75,12 @@ try:
 except TypeError:
     print("TypeError")
 
+#small int on LHS, complex on RHS, unsupported op
+try:
+    print(1 | 1j)
+except TypeError:
+    print('TypeError')
+
 # zero division
 try:
     1j / 0
diff --git a/tests/float/float1.py b/tests/float/float1.py
index f21f5bcdd3..0e115032b6 100644
--- a/tests/float/float1.py
+++ b/tests/float/float1.py
@@ -87,6 +87,12 @@ try:
 except TypeError:
     print("TypeError")
 
+# small int on LHS, float on RHS, unsupported op
+try:
+    print(1 | 1.0)
+except TypeError:
+    print('TypeError')
+
 # can't convert list to float
 try:
     float([])