Test version number in unittests

Enforces a version number as intended in the Makefile. This check is
necessary, as there is no ability to check via Macros for an empty
string.

.travis.yml

@@ -18,6 +18,9 @@ dist: trusty
 sudo: false
 language: c
 
+git:
+  depth: false
+
 before_install:
   - pip install --user cpp-coveralls
 

src/dunst.c

@@ -22,10 +22,6 @@
 #include "x11/screen.h"
 #include "x11/x.h"
 
-#ifndef VERSION
-#define VERSION "version info needed"
-#endif
-
 /* index of colors fit to urgency level */
 
 GMainLoop *mainloop = NULL;

test/misc.c

@@ -0,0 +1,21 @@
+#include "greatest.h"
+
+// This actually tests the buildsystem to make sure,
+// the build system hands over a correct version number
+// This is not testable via macros
+TEST assert_version_number(void)
+{
+        ASSERTm("Version number is empty",
+                0 != strcmp(VERSION, ""));
+
+        ASSERTm("Version number is not seeded by git",
+                NULL == strstr(VERSION, "non-git"));
+        PASS();
+}
+
+SUITE(suite_misc)
+{
+        RUN_TEST(assert_version_number);
+}
+
+/* vim: set tabstop=8 shiftwidth=8 expandtab textwidth=0: */

test/test.c

@@ -8,6 +8,7 @@ SUITE_EXTERN(suite_utils);
 SUITE_EXTERN(suite_option_parser);
 SUITE_EXTERN(suite_notification);
 SUITE_EXTERN(suite_markup);
+SUITE_EXTERN(suite_misc);
 SUITE_EXTERN(suite_icon);
 
 GREATEST_MAIN_DEFS();
@@ -21,6 +22,7 @@ int main(int argc, char *argv[]) {
         RUN_SUITE(suite_option_parser);
         RUN_SUITE(suite_notification);
         RUN_SUITE(suite_markup);
+        RUN_SUITE(suite_misc);
         RUN_SUITE(suite_icon);
         GREATEST_MAIN_END();
 }