Declare some tests as not parallel safe (#1398)

* Declare some testst as not parallel safe

* Mark additional test

Author: BCSharp

Src/IronPythonTest/Cases/CPythonCasesManifest.ini

@@ -423,6 +423,9 @@ IsolationLevel=PROCESS # https://github.com/IronLanguages/ironpython3/issues/489
 [CPython.test_file_eintr]
 RunCondition=NOT $(IS_POSIX) # TODO: debug
 
+[CPython.test_filecmp]
+NotParallelSafe=true # Creates/deletes a directory with a static name 'dir' in $TEMP
+
 [CPython.test_fileio]
 Ignore=true
 
@@ -476,8 +479,7 @@ Ignore=true
 Reason=ImportError: No module named '_testcapi'
 
 [CPython.test_gettext]
-NotParallelSafe=true
-Reason=Creates/deletes a directory with static name 'xx'
+NotParallelSafe=true # Creates/deletes a directory with static name 'xx'
 
 [CPython.test_glob]
 RunCondition=NOT $(IS_POSIX) # TODO: figure out
@@ -509,6 +511,8 @@ Reason=Blocking
 
 [CPython.test_imp]
 RunCondition=NOT $(IS_LINUX) # TODO: debug
+NotParallelSafe=true # Creates/deletes a module with a static name 'test_imp_helper'
+
 
 [CPython.test_import]
 Ignore=true
@@ -680,6 +684,7 @@ Ignore=true
 
 [CPython.test_pep277]
 RunCondition=NOT $(IS_POSIX) # TODO: debug
+NotParallelSafe=true # Renames files to/from a static name 'tmp'
 
 [CPython.test_pep380] # IronPython.test_pep380_stdlib
 Ignore=true

Src/IronPythonTest/Cases/IronPythonCasesManifest.ini

@@ -37,6 +37,7 @@ IsolationLevel=PROCESS # required for help to use pydoc
 
 [IronPython.test_imp]
 IsolationLevel=PROCESS # expects certain modules not to be loaded
+NotParallelSafe=true # Creates/deletes temporary modules and directories with fixed names
 
 [IronPython.test_importpkg]
 Ignore=true
@@ -152,6 +153,9 @@ NotParallelSafe=true # test_data.gz
 RunCondition=NOT $(IS_POSIX)
 NotParallelSafe=true # Uses fixed file, directory, and environment variable names
 
+[IronPython.modules.io_related.test_cPickle]
+NotParallelSafe=true # Uses a temporary module with a fixed name
+
 [IronPython.modules.system_related.test_sys_getframe]
 IsolationLevel=PROCESS # https://github.com/IronLanguages/ironpython3/issues/489
 FullFrames=true