Enable checking of the OTF2 file for the MPI testcase

Requires disabling the instrumenter on startup as otherwise the trace
gets so large (124k events) that reading it in Python takes forever

Author: Flamefire

test/cases/mpi.py

@@ -1,11 +1,13 @@
 #!/usr/bin/env python
 
+import scorep
 from mpi4py import MPI
 import numpy as np
 import mpi4py
 import instrumentation2
 mpi4py.rc.thread_level = "funneled"
 
+scorep.instrumenter.register()
 
 comm = mpi4py.MPI.COMM_WORLD
 

test/test_scorep.py

@@ -233,6 +233,7 @@ def test_error_region(scorep_env, instrumenter):
 @requires_package('numpy')
 @foreach_instrumenter
 def test_mpi(scorep_env, instrumenter):
+    trace_path = get_trace_path(scorep_env)
     std_out, std_err = call(["mpirun",
                              "-n",
                              "2",
@@ -244,6 +245,7 @@ def test_mpi(scorep_env, instrumenter):
                              "scorep",
                              "--mpp=mpi",
                              "--nocompiler",
+                             "--noinstrumenter",
                              "--instrumenter-type=" + instrumenter,
                              "cases/mpi.py"],
                             env=scorep_env)
@@ -253,6 +255,13 @@ def test_mpi(scorep_env, instrumenter):
     assert re.search(r'\[Score-P\] [\w/.: ]*MPI_THREAD_FUNNELED', std_err)
     assert re.search(expected_std_out, std_out)
 
+    std_out, std_err = call(["otf2-print", trace_path])
+
+    assert std_err == ""
+    for func in ('instrumentation2:bar', 'instrumentation2:baz'):
+        for event in ('ENTER', 'LEAVE'):
+            assert re.search('%s[ ]*[0-9 ]*[0-9 ]*Region: "%s"' % (event, func), std_out)
+
 
 @foreach_instrumenter
 def test_call_main(scorep_env, instrumenter):