tests: uniformly report test failures

testutils.c likes to print summaries after a test completes,
including if it failed.  But if the test outright exit()s,
this summary is skipped.  Enforce that we return instead of exit.

* cfg.mk (sc_prohibit_exit_in_tests): New syntax check.
* tests/commandhelper.c (main): Fix offenders.
* tests/qemumonitorjsontest.c (mymain): Likewise.
* tests/seclabeltest.c (main): Likewise.
* tests/securityselinuxlabeltest.c (mymain): Likewise.
* tests/securityselinuxtest.c (mymain): Likewise.
* tests/testutils.h (VIRT_TEST_MAIN_PRELOAD): Likewise.
* tests/testutils.c (virtTestMain): Likewise.
(virtTestCaptureProgramOutput): Use symbolic name.

cfg.mk

@@ -709,6 +709,13 @@ sc_prohibit_semicolon_at_eol_in_python:
 	halt="Don't use semicolon at eol in python files"		\
 	  $(_sc_search_regexp)
 
+# mymain() in test files should use return, not exit, for nicer output
+sc_prohibit_exit_in_tests:
+	@prohibit='\<exit *\('						\
+	in_vc_files='^tests/'						\
+	halt='use return, not exit(), in tests'				\
+	  $(_sc_search_regexp)
+
 # We don't use this feature of maint.mk.
 prev_version_file = /dev/null
 

tests/commandhelper.c

 /*
  * commandhelper.c: Auxiliary program for commandtest
  *
- * Copyright (C) 2010-2012 Red Hat, Inc.
+ * Copyright (C) 2010-2013 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -71,9 +71,8 @@ int main(int argc, char **argv) {
         origenv++;
     }
 
-    if (VIR_ALLOC_N(newenv, n) < 0) {
-        exit(EXIT_FAILURE);
-    }
+    if (VIR_ALLOC_N(newenv, n) < 0)
+        return EXIT_FAILURE;
 
     origenv = environ;
     n = i = 0;

tests/qemumonitorjsontest.c

@@ -449,11 +449,9 @@ mymain(void)
     return EXIT_AM_SKIP;
 #endif
 
-    if (virThreadInitialize() < 0)
-        exit(EXIT_FAILURE);
-
-    if (!(caps = testQemuCapsInit()))
-        exit(EXIT_FAILURE);
+    if (virThreadInitialize() < 0 ||
+        !(caps = testQemuCapsInit()))
+        return EXIT_FAILURE;
 
     virEventRegisterDefaultImpl();
 

tests/seclabeltest.c

@@ -15,12 +15,12 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
     const char *doi, *model;
 
     if (virThreadInitialize() < 0)
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
 
     mgr = virSecurityManagerNew(NULL, "QEMU", false, true, false);
     if (mgr == NULL) {
         fprintf(stderr, "Failed to start security driver");
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
     }
 
     model = virSecurityManagerGetModel(mgr);
@@ -28,7 +28,7 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
     {
         fprintf(stderr, "Failed to copy secModel model: %s",
                 strerror(errno));
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
     }
 
     doi = virSecurityManagerGetDOI(mgr);
@@ -36,7 +36,7 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
     {
         fprintf(stderr, "Failed to copy secModel DOI: %s",
                 strerror(errno));
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
     }
 
     virObjectUnref(mgr);

tests/securityselinuxlabeltest.c

@@ -317,15 +317,15 @@ mymain(void)
     if (!(mgr = virSecurityManagerNew("selinux", "QEMU", false, true, false))) {
         virErrorPtr err = virGetLastError();
         if (err->code == VIR_ERR_CONFIG_UNSUPPORTED)
-            exit(EXIT_AM_SKIP);
+            return EXIT_AM_SKIP;
 
         fprintf(stderr, "Unable to initialize security driver: %s\n",
                 err->message);
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
     }
 
     if ((caps = testQemuCapsInit()) == NULL)
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
 
 #define DO_TEST_LABELING(name) \
     if (virtTestRun("Labelling " # name, 1, testSELinuxLabeling, name) < 0) \

tests/securityselinuxtest.c

 /*
- * Copyright (C) 2011-2012 Red Hat, Inc.
+ * Copyright (C) 2011-2013 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -274,11 +274,11 @@ mymain(void)
     if (!(mgr = virSecurityManagerNew("selinux", "QEMU", false, true, false))) {
         virErrorPtr err = virGetLastError();
         if (err->code == VIR_ERR_CONFIG_UNSUPPORTED)
-            exit(EXIT_AM_SKIP);
+            return EXIT_AM_SKIP;
 
         fprintf(stderr, "Unable to initialize security driver: %s\n",
                 err->message);
-        exit(EXIT_FAILURE);
+        return EXIT_FAILURE;
     }
 
 #define DO_TEST_GEN_LABEL(desc, pidcon,                                 \

tests/testutils.c

@@ -317,7 +317,7 @@ virtTestCaptureProgramOutput(const char *const argv[], char **buf, int maxlen)
         virtTestCaptureProgramExecChild(argv, pipefd[1]);
 
         VIR_FORCE_CLOSE(pipefd[1]);
-        _exit(1);
+        _exit(EXIT_FAILURE);
 
     case -1:
         return -1;
@@ -586,7 +586,7 @@ int virtTestMain(int argc,
         abs_srcdir_cleanup = true;
     }
     if (!abs_srcdir)
-        exit(EXIT_AM_HARDFAIL);
+        return EXIT_AM_HARDFAIL;
 
     progname = last_component(argv[0]);
     if (STRPREFIX(progname, "lt-"))
@@ -603,13 +603,13 @@ int virtTestMain(int argc,
 
     if (virThreadInitialize() < 0 ||
         virErrorInitialize() < 0)
-        return 1;
+        return EXIT_FAILURE;
 
     virLogSetFromEnv();
     if (!getenv("LIBVIRT_DEBUG") && !virLogGetNbOutputs()) {
         if (virLogDefineOutput(virtTestLogOutput, virtTestLogClose, &testLog,
                                VIR_LOG_DEBUG, VIR_LOG_TO_STDERR, NULL, 0) < 0)
-            return 1;
+            return EXIT_FAILURE;
     }
 
 #if TEST_OOM

tests/testutils.h

 /*
  * utils.c: test utils
  *
- * Copyright (C) 2005, 2008-2012 Red Hat, Inc.
+ * Copyright (C) 2005, 2008-2013 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -78,7 +78,7 @@ int virtTestMain(int argc,
             if (virAsprintf(&newenv, "%s%s%s", preload ? preload : "",  \
                             preload ? ":" : "", lib) < 0) {             \
                 perror("virAsprintf");                                  \
-                exit(EXIT_FAILURE);                                     \
+                return EXIT_FAILURE;                                    \
             }                                                           \
             setenv("LD_PRELOAD", newenv, 1);                            \
             execv(argv[0], argv);                                       \