Update: Add tests for error functions

src/tests/Makefile.am

@@ -35,6 +35,11 @@ ctest_refobject_test_LDADD = libice_ctest.la \
     icecast-refobject.o
 check_PROGRAMS += ctest_refobject.test
 
+ctest_errors_test_SOURCES = %reldir%/ctest_errors.c
+ctest_errors_test_LDADD = libice_ctest.la \
+    icecast-errors.o
+check_PROGRAMS += ctest_errors.test
+
 ctest_buffer_test_SOURCES = %reldir%/ctest_buffer.c
 ctest_buffer_test_LDADD = libice_ctest.la \
     common/thread/libicethread.la \

src/tests/ctest_errors.c

@@ -0,0 +1,60 @@
+/* Icecast
+ *
+ * This program is distributed under the GNU General Public License, version 2.
+ * A copy of this license is included with this source.
+ *
+ * Copyright 2020,      Marvin Scholz <epirat07@gmail.com>,
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+
+#include "ctest_lib.h"
+
+#include "../errors.h"
+
+int main (void) {
+    int ret = 1;
+
+    ctest_init();
+
+    /* Verify all error IDs have a table entry */
+    {
+        for (int i = 0; i < ICECAST_ERROR_END_SENTINEL; ++i)
+        {
+            const icecast_error_t *error = error_get_by_id(i);
+
+            if (error == NULL || error->uuid == NULL) {
+                ret = 0;
+                break;
+            }
+
+            error = error_get_by_uuid(error->uuid);
+            if (error == NULL) {
+                ret = 0;
+                break;
+            }
+        }
+        ctest_test("error table completeness", ret);
+    }
+
+    /* Verify invalid ID lookup fails */
+    {
+        const icecast_error_t *error = error_get_by_id(ICECAST_ERROR_END_SENTINEL + 1);
+
+        ctest_test("invalid id lookup should fail", (error == NULL));
+    }
+
+    /* Verify invalid UUID lookup fails */
+    {
+        const icecast_error_t *error = error_get_by_uuid("c0225973-cd02-4faa-9720-01665ea400a7");
+
+        ctest_test("invalid uuid lookup should fail", (error == NULL));
+    }
+
+    ctest_fin();
+    return 0;
+}