[gnome-builder] tests: add basic vim mode test

[Christian Hergert <chergert src gnome org>]

commit 249ba95af7b7d2539d278b2cc3304d88f6f011b0
Author: Christian Hergert <christian hergert me>
Date:   Wed Apr 22 17:08:03 2015 -0700

    tests: add basic vim mode test
    
    This required a lot of improvements to synthesize_event(), but it looks
    like it is working for the basics.
    
    I expect we'll find some other issues, possibly due to macro recording
    and what not.

 .gitignore       |    1 +
 tests/test-vim.c |  273 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/tests.mk   |   15 +++
 3 files changed, 289 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 837f3f2..971c721 100644
--- a/.gitignore
+++ b/.gitignore
@@ -50,3 +50,4 @@ test-ide-indenter
 test-ide-source-view
 test-ide-vcs-uri
 test-navigation-list
+test-vim
diff --git a/tests/test-vim.c b/tests/test-vim.c
new file mode 100644
index 0000000..e50cd48
--- /dev/null
+++ b/tests/test-vim.c
@@ -0,0 +1,273 @@
+/* test-vim.c
+ *
+ * Copyright (C) 2015 Christian Hergert <christian hergert me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ide.h>
+#include <string.h>
+
+#include "gb-resources.h"
+
+typedef void (*VimTestFunc) (IdeContext *context,
+                             GtkWidget  *widget);
+
+typedef struct
+{
+  VimTestFunc  func;
+  gchar       *path;
+} VimTest;
+
+static void
+new_context_cb (GObject      *object,
+                GAsyncResult *result,
+                gpointer      user_data)
+{
+  VimTest *test = user_data;
+  GtkWidget *window;
+  GtkWidget *widget;
+  IdeBuffer *buffer;
+  GtkSourceCompletion *completion;
+  IdeContext *context;
+  IdeProject *project;
+  IdeFile *file;
+  GError *error = NULL;
+
+  g_assert (test != NULL);
+  g_assert (test->func != NULL);
+  g_assert (test->path != NULL);
+
+  context = ide_context_new_finish (result, &error);
+  g_assert_no_error (error);
+  g_assert (context != NULL);
+  g_assert (IDE_IS_CONTEXT (context));
+
+  project = ide_context_get_project (context);
+  file = ide_project_get_file_for_path (project, test->path);
+
+  buffer = g_object_new (IDE_TYPE_BUFFER,
+                         "context", context,
+                         "file", file,
+                         NULL);
+
+  window = gtk_offscreen_window_new ();
+  widget = g_object_new (IDE_TYPE_SOURCE_VIEW,
+                         "auto-indent", TRUE,
+                         "buffer", buffer,
+                         "visible", TRUE,
+                         NULL);
+  gtk_container_add (GTK_CONTAINER (window), widget);
+
+  completion = gtk_source_view_get_completion (GTK_SOURCE_VIEW (widget));
+  gtk_source_completion_block_interactive (completion);
+
+  gtk_window_present (GTK_WINDOW (window));
+
+  while (gtk_events_pending ())
+    gtk_main_iteration ();
+
+  test->func (context, widget);
+
+#if 0
+  ide_context_unload_async (context,
+                            NULL,
+                            (GAsyncReadyCallback)gtk_main_quit,
+                            NULL);
+#else
+  gtk_main_quit ();
+#endif
+
+  g_object_unref (buffer);
+  g_object_unref (file);
+  g_free (test->path);
+  g_free (test);
+}
+
+static void
+run_test (const gchar *path,
+          VimTestFunc  func)
+{
+  g_autoptr(GFile) project_file = NULL;
+  VimTest *test;
+
+  test = g_new0 (VimTest, 1);
+  test->path = g_strdup (path);
+  test->func = func;
+
+  project_file = g_file_new_for_path (TEST_DATA_DIR"/project1/configure.ac");
+  ide_context_new_async (project_file,
+                         NULL,
+                         new_context_cb,
+                         test);
+
+  gtk_main ();
+}
+
+static GdkEventKey *
+synthesize_event (GtkTextView *text_view,
+                  gunichar     ch)
+{
+  GdkDisplay *display;
+  GdkDeviceManager *device_manager;
+  GdkDevice *client_pointer;
+  GdkWindow *window;
+  GdkEvent *ev;
+  GdkKeymapKey *keys = NULL;
+  gint n_keys = 0;
+  gchar str[8] = { 0 };
+
+  window = gtk_text_view_get_window (text_view, GTK_TEXT_WINDOW_TEXT);
+  g_assert (window != NULL);
+  g_assert (GDK_IS_WINDOW (window));
+
+  g_unichar_to_utf8 (ch, str);
+
+  ev = gdk_event_new (GDK_KEY_PRESS);
+  ev->key.window = g_object_ref (window);
+  ev->key.send_event = TRUE;
+  ev->key.time = gtk_get_current_event_time ();
+  ev->key.state = 0;
+  ev->key.hardware_keycode = 0;
+  ev->key.group = 0;
+  ev->key.is_modifier = 0;
+
+  switch (ch)
+    {
+    case '\n':
+      ev->key.keyval = GDK_KEY_Return;
+      ev->key.string = g_strdup ("\n");
+      ev->key.length = 1;
+      break;
+
+    case '\e':
+      ev->key.keyval = GDK_KEY_Escape;
+      ev->key.string = g_strdup ("");
+      ev->key.length = 0;
+      break;
+
+    default:
+      ev->key.keyval = gdk_unicode_to_keyval (ch);
+      ev->key.length = strlen (str);
+      ev->key.string = g_strdup (str);
+      break;
+    }
+
+  gdk_keymap_get_entries_for_keyval (gdk_keymap_get_default (),
+                                     ev->key.keyval,
+                                     &keys,
+                                     &n_keys);
+
+  if (n_keys > 0)
+    {
+      ev->key.hardware_keycode = keys [0].keycode;
+      ev->key.group = keys [0].group;
+      g_free (keys);
+    }
+
+  display = gdk_window_get_display (ev->any.window);
+  device_manager = gdk_display_get_device_manager (display);
+  client_pointer = gdk_device_manager_get_client_pointer (device_manager);
+  gdk_event_set_device (ev, gdk_device_get_associated_device (client_pointer));
+
+  return &ev->key;
+}
+
+/*
+ * Converts the input_chars into GdkEventKeys and synthesizes them to
+ * the widget. Then ensures that we get the proper string back out.
+ */
+static void
+assert_keypress_equal (GtkWidget   *widget,
+                       const gchar *input_chars,
+                       const gchar *output_str)
+{
+  g_autofree gchar *result = NULL;
+  GtkTextView *text_view = (GtkTextView *)widget;
+  GtkTextBuffer *buffer;
+  GtkTextIter begin;
+  GtkTextIter end;
+
+  g_assert (GTK_IS_TEXT_VIEW (widget));
+
+  buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (widget));
+  g_assert (GTK_IS_TEXT_BUFFER (buffer));
+
+  for (; *input_chars; input_chars = g_utf8_next_char (input_chars))
+    {
+      gunichar ch = g_utf8_get_char (input_chars);
+      GdkEventKey *event;
+
+      while (gtk_events_pending ())
+        gtk_main_iteration ();
+
+      event = synthesize_event (text_view, ch);
+      gtk_main_do_event ((GdkEvent *)event);
+      gdk_event_free ((GdkEvent *)event);
+    }
+
+  gtk_text_buffer_get_bounds (buffer, &begin, &end);
+  result = gtk_text_buffer_get_text (buffer, &begin, &end, TRUE);
+
+  g_assert_cmpstr (result, ==, output_str);
+
+  gtk_text_buffer_set_text (buffer, "", 0);
+}
+
+static void
+test_vim_basic_cb (IdeContext *context,
+                   GtkWidget  *widget)
+{
+  g_object_set (widget,
+                "insert-matching-brace", TRUE,
+                "overwrite-braces", TRUE,
+                NULL);
+
+  assert_keypress_equal (widget, "ithis is a test.\e", "this is a test.");
+}
+
+static void
+test_vim_basic (void)
+{
+  run_test ("test.c", test_vim_basic_cb);
+}
+
+static void
+load_vim_css (void)
+{
+  GtkCssProvider *provider;
+
+  g_resources_register (gb_get_resource ());
+
+  provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (provider, "/org/gnome/builder/keybindings/vim.css");
+  gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
+                                             GTK_STYLE_PROVIDER (provider),
+                                             GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+  g_clear_object (&provider);
+}
+
+gint
+main (gint argc,
+      gchar *argv[])
+{
+  gtk_init (&argc, &argv);
+
+  load_vim_css ();
+
+  g_test_init (&argc, &argv, NULL);
+  g_test_add_func ("/Ide/Vim/basic", test_vim_basic);
+
+  return g_test_run ();
+}
diff --git a/tests/tests.mk b/tests/tests.mk
index 17cbc7a..6f6e4a5 100644
--- a/tests/tests.mk
+++ b/tests/tests.mk
@@ -65,6 +65,21 @@ test_ide_indenter_CFLAGS = \
 test_ide_indenter_LDADD = libide-1.0.la $(LIBIDE_LIBS)
 
 
+noinst_PROGRAMS += test-vim
+TESTS += test-vim
+test_vim_SOURCES = tests/test-vim.c
+test_vim_CFLAGS = \
+       -I$(top_builddir)/src/resources \
+       $(libide_1_0_la_CFLAGS) \
+       -DTEST_DATA_DIR="\"$(top_srcdir)/tests/data\"" \
+       -DBUILDDIR="\"$(abs_top_builddir)\""
+test_vim_LDADD = \
+       libide-1.0.la \
+       libgnome-builder.la \
+       $(LIBIDE_LIBS) \
+       $(NULL)
+
+
 noinst_PROGRAMS += test-ide-source-view
 test_ide_source_view_SOURCES = tests/test-ide-source-view.c
 test_ide_source_view_CFLAGS = \