make io test working

Author: AndreasGocht

test/cases/io.py

@@ -0,0 +1,13 @@
+import os
+import scorep.instrumenter
+
+with scorep.instrumenter.enable("expect io"):
+    with open("test.txt", "w") as f:
+        f.write("test")
+
+    with open("test.txt", "r") as f:
+        data = f.read()
+        print(data)
+
+    os.remove("test.txt")
+