[gtksourceview/wip/chergert/gsv-gtk4: 254/259] tests: use C as language for completion

[Christian Hergert <chergert src gnome org>]

commit a140e01f530b3b65af62d2e2cb3d401f634ac5f1
Author: Christian Hergert <chergert redhat com>
Date:   Thu Sep 10 14:46:34 2020 -0700

    tests: use C as language for completion

 tests/test-completion.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/tests/test-completion.c b/tests/test-completion.c
index 357f0f2c..6fb62c23 100644
--- a/tests/test-completion.c
+++ b/tests/test-completion.c
@@ -520,9 +520,12 @@ create_completion (GtkSourceView       *source_view,
 static void
 create_window (void)
 {
+       GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
+       GtkSourceLanguage *l = gtk_source_language_manager_get_language (lm, "c");
        GtkBuilder *builder;
        GError *error = NULL;
        GtkWindow *window;
+       GtkTextBuffer *buffer;
        GtkSourceView *source_view;
        GtkSourceCompletion *completion;
        GtkCheckButton *remember_info_visibility;
@@ -558,6 +561,8 @@ create_window (void)
        nb_fixed_proposals = GTK_SPIN_BUTTON (gtk_builder_get_object (builder, 
"spinbutton_nb_fixed_proposals"));
        nb_random_proposals = GTK_SPIN_BUTTON (gtk_builder_get_object (builder, 
"spinbutton_nb_random_proposals"));
 
+       buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (source_view));
+       gtk_source_buffer_set_language (GTK_SOURCE_BUFFER (buffer), l);
        gtk_source_view_set_enable_snippets (source_view, TRUE);
 
        completion = gtk_source_view_get_completion (source_view);