make test: enhance core-file information

Change-Id: I1283960a9a49f6d70b9d7b7793cfb345c22ccdea
Signed-off-by: Klement Sekera <ksekera@cisco.com>

2 files changed, 32 insertions, 17 deletions

diff --git a/test/hook.py b/test/hook.py
index 49b41c91dff..f4bafa16f19 100644
--- a/test/hook.py
+++ b/test/hook.py
@@ -4,6 +4,7 @@ import sys
 import traceback
 from log import RED, single_line_delim, double_line_delim
 from debug import spawn_gdb
+from subprocess import check_output, CalledProcessError
 
 
 class Hook(object):
@@ -67,8 +68,17 @@ class PollHook(Hook):
             open('%s/_core_handled' % self.testcase.tempdir, 'a').close()
             spawn_gdb(self.testcase.vpp_bin, core_path, self.logger)
         else:
-            self.logger.critical("Core file present, debug with: gdb %s %s" %
-                                 (self.testcase.vpp_bin, core_path))
+            self.logger.error("Core file present, debug with: gdb %s %s" %
+                              (self.testcase.vpp_bin, core_path))
+            self.logger.error("Running `file %s':" % core_path)
+            try:
+                info = check_output(["file", core_path])
+                self.logger.error(info)
+            except CalledProcessError as e:
+                self.logger.error(
+                    "Could not run `file' utility on core-file, "
+                    "rc=%s" % e.returncode)
+                pass
 
     def poll_vpp(self):
         """
diff --git a/test/run_tests.py b/test/run_tests.py
index 24c51a18f9a..158494acd9e 100644
--- a/test/run_tests.py
+++ b/test/run_tests.py
@@ -12,6 +12,7 @@ from framework import VppTestRunner
 from debug import spawn_gdb
 from log import global_logger
 from discover_tests import discover_tests
+from subprocess import check_output, CalledProcessError
 
 # timeout which controls how long the child has to finish after seeing
 # a core dump in test temporary directory. If this is exceeded, parent assumes
@@ -99,8 +100,8 @@ def run_forked(suite):
                                    (last_test, last_test_temp_dir))
         elif not child.is_alive():
             fail = True
-            global_logger.critical("Child process unexpectedly died (last "
-                                   "test running was `%s' in `%s')!" %
+            global_logger.critical("Child python process unexpectedly died "
+                                   "(last test running was `%s' in `%s')!" %
                                    (last_test, last_test_temp_dir))
         elif last_test_temp_dir and last_test_vpp_binary:
             core_path = "%s/core" % last_test_temp_dir
@@ -111,8 +112,8 @@ def run_forked(suite):
                     if not os.path.isfile(
                             "%s/_core_handled" % last_test_temp_dir):
                         global_logger.critical(
-                            "Child unresponsive and core-file exists in test "
-                            "temporary directory!")
+                            "Child python process unresponsive and core-file "
+                            "exists in test temporary directory!")
                         fail = True
 
         if fail:
@@ -123,7 +124,7 @@ def run_forked(suite):
                                 "test: %s -> %s" % (link_path, lttd))
             try:
                 os.symlink(last_test_temp_dir, link_path)
-            except:
+            except Exception:
                 pass
             api_post_mortem_path = "/tmp/api_post_mortem.%d" % vpp_pid
             if os.path.isfile(api_post_mortem_path):
@@ -135,6 +136,15 @@ def run_forked(suite):
                 if os.path.isfile(core_path):
                     global_logger.error("Core-file exists in test temporary "
                                         "directory: %s!" % core_path)
+                    global_logger.debug("Running `file %s':" % core_path)
+                    try:
+                        info = check_output(["file", core_path])
+                        global_logger.debug(info)
+                    except CalledProcessError as e:
+                        global_logger.error(
+                            "Could not run `file' utility on core-file, "
+                            "rc=%s" % e.returncode)
+                        pass
                     if debug_core:
                         spawn_gdb(last_test_vpp_binary, core_path,
                                   global_logger)
@@ -151,19 +161,16 @@ if __name__ == '__main__':
 
     try:
         verbose = int(os.getenv("V", 0))
-    except:
+    except ValueError:
         verbose = 0
 
     default_test_timeout = 600  # 10 minutes
     try:
         test_timeout = int(os.getenv("TIMEOUT", default_test_timeout))
-    except:
+    except ValueError:
         test_timeout = default_test_timeout
 
-    try:
-        debug = os.getenv("DEBUG")
-    except:
-        debug = None
+    debug = os.getenv("DEBUG")
 
     s = os.getenv("STEP", "n")
     step = True if s.lower() in ("y", "yes", "1") else False
@@ -184,10 +191,8 @@ if __name__ == '__main__':
         discover_tests(d, cb)
 
     try:
-        retries = int(os.getenv("RETRIES"))
-    except:
-        retries = 0
-    if retries is None:
+        retries = int(os.getenv("RETRIES", 0))
+    except ValueError:
         retries = 0
     attempts = retries + 1
     if attempts > 1: