diff --git a/test/.gitignore b/test/.gitignore
index 50aae070..cf825a74 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -1 +1,2 @@
+/.coverage
 /nohup.out
diff --git a/test/bytecode_3.6_run/02_var_annotate.pyc b/test/bytecode_3.6_run/02_var_annotate.pyc
new file mode 100644
index 00000000..8cb1f479
Binary files /dev/null and b/test/bytecode_3.6_run/02_var_annotate.pyc differ
diff --git a/test/bytecode_3.7_run/10_complex.pyc b/test/bytecode_3.7_run/10_complex.pyc
new file mode 100644
index 00000000..7b24e33c
Binary files /dev/null and b/test/bytecode_3.7_run/10_complex.pyc differ
diff --git a/test/simple_source/bug31/10_complex.py b/test/simple_source/bug31/10_complex.py
index 62c0d463..b31478ae 100644
--- a/test/simple_source/bug31/10_complex.py
+++ b/test/simple_source/bug31/10_complex.py
@@ -1,4 +1,5 @@
 # Greatly simplified from from 3.3 test_complex.py
+from math import atan2
 
 # RUNNABLE!
 def assertCloseAbs(x, y, eps=1e-09):
@@ -38,14 +39,16 @@ def test_truediv():
             check_div(x, y)
 
 def test_plus_minus_0j():
-    z1, z2 = (0j, (-0 - 0j))
+    assert -0j == -0j == complex(0.0, 0.0)
+    assert -0-0j == -0j == complex(0.0, 0.0)
+    z1, z2 = (0j, -0j)
     assert atan2(z1.imag, -1.0) == atan2(0.0, -1.0)
-    assert atan2(z2.imag, -1.0), atan2(-0.0, -1.0)
+    # assert atan2(z2.imag, -1.0), atan2(-0.0, -1.0)
 
 # Check that we can handle -inf, and inf as a complex numbers.
 # And put it in a tuple and a list to make it harder.
 z1, z2 = (-1e1000j, 1e1000j)
 assert z1 in [-1e1000j, 1e1000j]
-assert z1 == z2
+assert z1 != z2
 test_truediv()
-test_plus_minus0j()
+test_plus_minus_0j()