[gtksourceview] tests: add test that simply tests loading buffers

[Christian Hergert <chergert src gnome org>]

commit 739bdcadd039fd8f4d79d73c4b9e7775b0e2baa0
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 19 17:20:49 2021 -0700

    tests: add test that simply tests loading buffers

 tests/meson.build |  1 +
 tests/test-load.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)
---
diff --git a/tests/meson.build b/tests/meson.build
index 222dbc83..7c4a72bd 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -10,6 +10,7 @@ tests_sources = {
         'search-performances': ['test-search-performances.c'],
                    'snippets': ['test-snippets.c'],
               'space-drawing': ['test-space-drawing.c'],
+                       'load': ['test-load.c'],
                      'widget': ['test-widget.c'],
 }
 
diff --git a/tests/test-load.c b/tests/test-load.c
new file mode 100644
index 00000000..033ec274
--- /dev/null
+++ b/tests/test-load.c
@@ -0,0 +1,48 @@
+#include <gtksourceview/gtksource.h>
+#include <stdlib.h>
+
+static void
+finished_cb (GObject      *object,
+             GAsyncResult *result,
+             gpointer      user_data)
+{
+  g_autoptr(GError) error = NULL;
+  GMainLoop *loop = user_data;
+
+  if (!gtk_source_file_loader_load_finish (GTK_SOURCE_FILE_LOADER (object), result, &error))
+    g_printerr ("Error loading file: %s\n", error->message);
+
+  g_main_loop_quit (loop);
+}
+
+int
+main (int argc,
+      char *argv[])
+{
+  g_autoptr(GFile) file = NULL;
+  g_autoptr(GMainLoop) loop = NULL;
+  g_autoptr(GtkSourceBuffer) buffer = NULL;
+  g_autoptr(GtkSourceFile) sfile = NULL;
+  g_autoptr(GtkSourceFileLoader) loader = NULL;
+
+  if (argc != 2)
+    {
+      g_printerr ("usage: %s FILENAME\n", argv[0]);
+      return EXIT_FAILURE;
+    }
+
+  gtk_source_init ();
+
+  loop = g_main_loop_new (NULL, FALSE);
+  file = g_file_new_for_commandline_arg (argv[1]);
+  buffer = gtk_source_buffer_new (NULL);
+  sfile = gtk_source_file_new ();
+  gtk_source_file_set_location (sfile, file);
+  loader = gtk_source_file_loader_new (buffer, sfile);
+
+  gtk_source_file_loader_load_async (loader, G_PRIORITY_DEFAULT, NULL, NULL, NULL, NULL, finished_cb, loop);
+
+  g_main_loop_run (loop);
+
+  return EXIT_SUCCESS;
+}