Work for test refactoring.

There are a few major areas in this change.

* CMake options are now located in a common cmake/NNGOptions.cmake
  file.  This should make it easier for folks to figure out what
  the options are, and how they are used.

* Tests are now scoped with their directory name, which should
  avoid possible name collisions with test names.

* A number of tests have been either moved or incorporated into
  the newer testutil/acutest framework.  We are moving away from
  my old c-convey framework to something easier to debug.

* We use CMake directories a bit more extensively leading to a much
  cleaner CMake structure.  It's not complete, but a big step in the
  right direction, and a preview of future work.

* Tests are now run with verbose flags, so we get more test results
  in the CI/CD logs.

1 files changed, 5 insertions, 8 deletions

diff --git a/src/platform/posix/posix_file.c b/src/platform/posix/posix_file.c
index 5d918d6b..d5fb5016 100644
--- a/src/platform/posix/posix_file.c
+++ b/src/platform/posix/posix_file.c
@@ -1,5 +1,5 @@
 //
-// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
 // Copyright 2018 Capitar IT Group BV <info@capitar.com>
 //
 // This software is supplied under the terms of the MIT License, a
@@ -323,15 +323,12 @@ nni_plat_temp_dir(void)
 char *
 nni_plat_join_dir(const char *prefix, const char *suffix)
 {
-	char * newdir;
-	size_t len;
+	char *result;
 
-	len    = strlen(prefix) + strlen(suffix) + 2;
-	newdir = nni_alloc(strlen(prefix) + strlen(suffix) + 2);
-	if (newdir != NULL) {
-		(void) snprintf(newdir, len, "%s/%s", prefix, suffix);
+	if (nni_asprintf(&result, "%s/%s", prefix, suffix) == 0) {
+		return (result);
 	}
-	return (newdir);
+	return (NULL);
 }
 
 #endif // NNG_PLATFORM_POSIX