[test_resize] Don't use g_file_copy, it crashes qemu

Now it should be possible to automatically run unit tests in OBS

mms-lib/test/resize/test_resize.c

@@ -319,6 +319,31 @@ test_png_size(
     return ok;
 }
 
+static
+gboolean
+test_file_copy(
+    const char* src,
+    const char* dest)
+{
+    gboolean ok = FALSE;
+    FILE* in = fopen(src, "rb");
+    if (in) {
+        FILE* out = fopen(dest, "wb");
+        if (out) {
+            const size_t buflen = 4096;
+            size_t nbytes;
+            void* buf = g_malloc(buflen);
+            while ((nbytes = fread(buf, 1, buflen, in)) > 0 &&
+                   fwrite(buf, 1, nbytes, out) == nbytes);
+            ok = (feof(in) && !ferror(in) && !ferror(out));
+            g_free(buf);
+            fclose(out);
+        }
+        fclose(in);
+    }
+    return ok;
+}
+
 static
 int
 test_run_one(
@@ -334,9 +359,7 @@ test_run_one(
     if (dir) {
         GError* error = NULL;
         char* testfile = g_strconcat(dir, "/", name, NULL);
-        GFile* src = g_file_new_for_path(test->file);
-        GFile* dest = g_file_new_for_path(testfile);
-        if (g_file_copy(src, dest, 0, NULL, NULL, NULL, &error)) {
+        if (test_file_copy(test->file, testfile)) {
             MMSAttachment* at;
             MMSAttachmentInfo info;
             MMSConfig test_config = *config;
@@ -377,11 +400,8 @@ test_run_one(
                 g_error_free(error);
             }
         } else {
-            MMS_ERR("%s", MMS_ERRMSG(error));
-            g_error_free(error);
+            MMS_ERR("Failed to copy %s -> %s", test->file, testfile);
         }
-        g_object_unref(src);
-        g_object_unref(dest);
         g_free(testfile);
     }
     MMS_INFO("%s: %s", (ret == RET_OK) ? "OK" : "FAILED", test->name);