fuzzing: Add fuzz tests for GUri parsing and escaping

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Helps: #110

fuzzing/fuzz_uri_parse.c

@@ -0,0 +1,26 @@
+#include "fuzz.h"
+
+int
+LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
+{
+  GUri *uri = NULL;
+  gchar *uri_string = NULL;
+  const GUriFlags flags = G_URI_FLAGS_NONE;
+
+  fuzz_set_logging_func ();
+
+  /* ignore @size */
+  uri = g_uri_parse ((const gchar *) data, flags, NULL);
+  if (uri == NULL)
+    return 0;
+
+  uri_string = g_uri_to_string (uri);
+  g_uri_unref (uri);
+
+  if (uri_string == NULL)
+    return 0;
+
+  g_free (uri_string);
+
+  return 0;
+}