[PY 3.8] test fixes for file closings, rawstrings

On a linux host (missing some things that may be on the Travis CI
setup), Py3.8a3 now shows 19 fails, 1048 pass, with 84 Warning: messages.

Signed-off-by: Mats Wichmann <mats@linux.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/test/overrides.py b/test/overrides.py
index cca8dc7..54a174b 100644
--- a/test/overrides.py
+++ b/test/overrides.py
@@ -77,11 +77,13 @@ env.Program('hello', 'hello.c',
 test.write('hello.c',"this ain't no c file!\n")
 
 test.write('mycc.py',"""
-open('hello.not_obj', 'w').write('this is no object file!')
+with open('hello.not_obj', 'w') as f:
+    f.write('this is no object file!')
 """)
 
 test.write('mylink.py',"""
-open('hello.not_exe', 'w').write('this is not a program!')
+with open('hello.not_exe', 'w') as f:
+    f.write('this is not a program!')
 """)
 
 test.run(arguments='hello.not_exe')
@@ -107,11 +109,13 @@ env.Program('goodbye', 'goodbye.c',
 test.write('goodbye.c',"this ain't no c file!\n")
 
 test.write('mycc.py',"""
-open('goodbye.not_obj', 'wt').write('this is no object file!')
+with open('goodbye.not_obj', 'wt') as f:
+    f.write('this is no object file!')
 """)
 
 test.write('mylink.py',"""
-open('goodbye.not_exe', 'wt').write('this is not a program!')
+with open('goodbye.not_exe', 'wt') as f:
+    f.write('this is not a program!')
 """)
 
 test.run(arguments='goodbye.not_exe', stderr=None)