Fix pytest_assertrepr_compare on python3 (issue24)

The maxsize argument must be an integer and the devision syntax changed
between python2 and python3.

CHANGELOG

@@ -1,3 +1,9 @@
+Changes between 2.0.1 and 2.0.2
+----------------------------------------------
+
+- fix issue24 - pytest_assertrepr_compare produces an in-line
+  exception on python3
+
 Changes between 2.0.0 and 2.0.1
 ----------------------------------------------
 

_pytest/assertion.py

@@ -12,7 +12,7 @@ def pytest_addoption(parser):
         help="disable python assert expression reinterpretation."),
 
 def pytest_configure(config):
-    # The _pytesthook attribute on the AssertionError is used by
+    # The _reprcompare attribute on the py.code module is used by
     # py._code._assertionnew to detect this plugin was loaded and in
     # turn call the hooks defined here as part of the
     # DebugInterpreter.
@@ -51,7 +51,7 @@ except NameError:
 def pytest_assertrepr_compare(op, left, right):
     """return specialised explanations for some operators/operands"""
     width = 80 - 15 - len(op) - 2 # 15 chars indentation, 1 space around op
-    left_repr = py.io.saferepr(left, maxsize=width/2)
+    left_repr = py.io.saferepr(left, maxsize=int(width/2))
     right_repr = py.io.saferepr(right, maxsize=width-len(left_repr))
     summary = '%s %s %s' % (left_repr, op, right_repr)
 

testing/test_assertion.py

@@ -114,6 +114,10 @@ class TestAssert_reprcompare:
         expl = callequal(A(), '')
         assert not expl
 
+    def test_repr_no_exc(self):
+        expl = ' '.join(callequal('foo', 'bar'))
+        assert 'raised in repr()' not in expl
+
 def test_reprcompare_notin():
     detail = plugin.pytest_assertrepr_compare('not in', 'foo', 'aaafoobbb')[1:]
     assert detail == ["'foo' is contained here:", '  aaafoobbb', '?    +++']