Enable test_clrexception (#1043)

Author: slozier

Src/IronPythonTest/Cases/IronPythonCasesManifest.ini

@@ -16,9 +16,6 @@ RunCondition=NOT $(IS_POSIX)
 Reason=Causes an abort on mono, needs debug
 Ignore=true
 
-[IronPython.test_clrexception]
-Ignore=true
-
 [IronPython.test_clrload]
 IsolationLevel=PROCESS # requires System.Drawing assembly to be unloaded
 

Tests/test_clrexception.py

@@ -47,19 +47,12 @@ def test_mappings(self):
 
         # Tests for exact mappings
 
-        # BUG 515 System.SystemException not mapped to StandardError
-        self.clr_to_py_positive(System.SystemException, Exception)
-        # /BUG
-
-        self.clr_to_py_positive(System.IO.IOException, IOError, msg = "System.IO.IOException -> IOError")
-        self.py_to_clr_positive(IOError, System.IO.IOException, msg = "IOError -> System.IO.IOException")
+        self.clr_to_py_positive(System.SystemException, SystemError, msg = "System.SystemException -> SystemError")
+        self.py_to_clr_positive(SystemError, System.SystemException, msg = "SystemError -> System.SystemException")
 
         self.clr_to_py_positive(System.MissingMemberException, AttributeError, msg ="System.MissingMemberException -> AttributeError")
         self.py_to_clr_positive(AttributeError, System.MissingMemberException, msg = "AttributeError -> System.MissingMemberException")
 
-        self.clr_to_py_positive(System.ComponentModel.Win32Exception, WindowsError, msg ="System.ComponentModel.Win32Exception -> WindowsError")
-        self.py_to_clr_positive(WindowsError, System.ComponentModel.Win32Exception, msg = "WindowsError -> System.ComponentModel.Win32Exception")
-
         self.clr_to_py_positive(System.IO.EndOfStreamException, EOFError, msg="System.IO.EndOfStreamException -> EOFError")
         self.py_to_clr_positive(EOFError, System.IO.EndOfStreamException, msg = "EOFError -> System.IO.EndOfStreamException")
 
@@ -95,8 +88,13 @@ def test_mappings(self):
 
         self.clr_to_py_positive(System.Collections.Generic.KeyNotFoundException, KeyError, msg = "System.Collections.Generic.KeyNotFoundException -> KeyError")
         self.py_to_clr_positive(KeyError, System.Collections.Generic.KeyNotFoundException, msg = "KeyError -> System.Collections.Generic.KeyNotFoundException")
+
         # Tests for inexact mappings
 
+        # These used to have exact mappings with IronPython 2
+        self.clr_to_py_positive(System.IO.IOException, SystemError, msg = "System.IO.IOException -> SystemError")
+        self.clr_to_py_positive(System.ComponentModel.Win32Exception, WindowsError, msg ="System.ComponentModel.Win32Exception -> WindowsError")
+
         # Let CLR exception class A map to Python error type B;
         #  let A' be a direct subclass of A, with *no* direct mapping to a Python error type;
         # then A' should be caught in Iron Python as an instance of B.