1 files changed, 29 insertions, 0 deletions
diff --git a/test/test-geoip-invalid-file.c b/test/test-geoip-invalid-file.c
new file mode 100644
index 0000000..10fe246
--- /dev/null
+++ b/test/test-geoip-invalid-file.c
@@ -0,0 +1,29 @@
+#include "GeoIP.h"
+
+int main(void) {
+    GeoIP *gi = GeoIP_open(SRCDIR "/README.md", GEOIP_MEMORY_CACHE);
+
+    /* We don't detect invalid files at load, unfortunately. */
+    if (gi == NULL) {
+        fprintf(stderr, "Error opening database\n");
+        return 1;
+    }
+
+    const char *country = GeoIP_country_code_by_addr(gi, "24.24.24.24");
+    if (country != NULL) {
+        fprintf(stderr,
+                "Received a non-NULL value on an invalid database from "
+                "GeoIP_country_code_by_addr\n");
+        return 1;
+    }
+
+    country = GeoIP_country_code_by_addr_v6(gi, "24.24.24.24");
+    if (country != NULL) {
+        fprintf(stderr,
+                "Received a non-NULL value on an invalid database from "
+                "GeoIP_country_code_by_addr_v6\n");
+        return 1;
+    }
+
+    return 0;
+}