diff --git a/testsuite/gtk/accessor-apis.c b/testsuite/gtk/accessor-apis.c
new file mode 100644
index 0000000000..e45842b6a8
--- /dev/null
+++ b/testsuite/gtk/accessor-apis.c
@@ -0,0 +1,296 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include <gtk/gtk.h>
+
+static struct
+{
+  const char *expected;
+  const char *alternative;
+} exceptions[] = {
+  /* keep this sorted please */
+  { "gtk_window_get_display", "gtk_widget_get_display" },
+};
+
+static char *type_exceptions[] = {
+  "GtkCellRenderer",
+  "GtkSettings",
+  "GtkTextTag",
+};
+
+static GModule *module;
+
+static gboolean
+function_exists (const char *function_name)
+{
+  gpointer func;
+  guint i;
+
+  if (g_module_symbol (module, function_name, &func) && func)
+    return TRUE;
+
+  for (i = 0; i < G_N_ELEMENTS(exceptions); i++)
+    {
+      if (g_str_equal (function_name, exceptions[i].expected))
+        {
+          if (exceptions[i].alternative)
+            return function_exists (exceptions[i].alternative);
+          else
+            return TRUE;
+        }
+    }
+
+  return FALSE;
+}
+
+/* Keep in sync with gtkbuilder.c ! */
+static char *
+type_name_mangle (const char *name,
+                  gboolean    split_first_cap)
+{
+  GString *symbol_name = g_string_new ("");
+  gint i;
+
+  for (i = 0; name[i] != '\0'; i++)
+    {
+      /* skip if uppercase, first or previous is uppercase */
+      if ((name[i] == g_ascii_toupper (name[i]) &&
+             ((i > 0 && name[i-1] != g_ascii_toupper (name[i-1])) ||
+              (i == 1 && name[0] == g_ascii_toupper (name[0]) && split_first_cap))) ||
+           (i > 2 && name[i]  == g_ascii_toupper (name[i]) &&
+           name[i-1] == g_ascii_toupper (name[i-1]) &&
+           name[i-2] == g_ascii_toupper (name[i-2])))
+        g_string_append_c (symbol_name, '_');
+      g_string_append_c (symbol_name, g_ascii_tolower (name[i]));
+    }
+
+  return g_string_free (symbol_name, FALSE);
+}
+
+static void
+property_name_mangle (GString    *symbol_name,
+                      const char *name)
+{
+  guint i;
+
+  for (i = 0; name[i] != '\0'; i++)
+    {
+      if (g_ascii_isalnum (name[i]))
+        g_string_append_c (symbol_name, g_ascii_tolower (name[i]));
+      else
+        g_string_append_c (symbol_name, '_');
+    }
+}
+
+const char *getters[] = { "get", "is", "ref" };
+const char *setters[] = { "set" };
+
+static char **
+get_potential_names (GType       type,
+                     gboolean    get,
+                     const char *property_name)
+{
+  GPtrArray *options;
+  char *type_name_options[2];
+  guint n_type_name_options, n_verbs;
+  const char **verbs;
+  guint i, j;
+
+  if (get)
+    {
+      verbs = getters;
+      n_verbs = G_N_ELEMENTS (getters);
+    }
+  else
+    {
+      verbs = setters;
+      n_verbs = G_N_ELEMENTS (setters);
+    }
+
+  type_name_options[0] = type_name_mangle (g_type_name (type), FALSE);
+  type_name_options[1] = type_name_mangle (g_type_name (type), TRUE);
+  if (g_str_equal (type_name_options[0], type_name_options[1]))
+    n_type_name_options = 1;
+  else
+    n_type_name_options = 2;
+
+  options = g_ptr_array_new ();
+
+  for (i = 0; i < n_type_name_options; i++)
+    {
+      for (j = 0; j < n_verbs; j++)
+        {
+          GString *str;
+
+          str = g_string_new (type_name_options[i]);
+          g_string_append_c (str, '_');
+          g_string_append (str, verbs[j]);
+          g_string_append_c (str, '_');
+          property_name_mangle (str, property_name);
+
+          g_ptr_array_add (options, g_string_free (str, FALSE));
+        }
+    }
+
+  g_free (type_name_options[0]);
+  g_free (type_name_options[1]);
+
+  g_ptr_array_add (options, NULL);
+
+  return (char **) g_ptr_array_free (options, FALSE);
+}
+
+static void
+check_function_name (GType       type,
+                     gboolean    get,
+                     const char *property_name)
+{
+  guint i;
+  char **names;
+
+  names = get_potential_names (type, get, property_name);
+
+  for (i = 0; names[i] != NULL; i++)
+    {
+      if (function_exists (names[i]))
+        {
+          g_strfreev (names);
+          return;
+        }
+    }
+
+  g_test_message ("No %s for property %s::%s", get ? "getter" : "setter", g_type_name (type), property_name);
+  for (i = 0; names[i] != NULL; i++)
+    {
+      g_test_message ("    %s", names[i]);
+    }
+
+  g_test_fail ();
+
+  g_strfreev (names);
+}
+
+static void
+check_property (GParamSpec *pspec)
+{
+  if (pspec->flags & G_PARAM_READABLE)
+    {
+      check_function_name (pspec->owner_type,
+                           TRUE,
+                           pspec->name);
+    }
+  if (pspec->flags & G_PARAM_WRITABLE &&
+      !(pspec->flags & G_PARAM_CONSTRUCT_ONLY))
+    {
+      check_function_name (pspec->owner_type,
+                           FALSE,
+                           pspec->name);
+    }
+}
+
+static void
+test_accessors (gconstpointer data)
+{
+  GType type = GPOINTER_TO_SIZE (data);
+  GObjectClass *klass;
+  GParamSpec **pspecs;
+  guint i, n_pspecs;
+
+  klass = g_type_class_ref (type);
+  pspecs = g_object_class_list_properties (klass, &n_pspecs);
+
+  for (i = 0; i < n_pspecs; ++i)
+    {
+      GParamSpec *pspec = pspecs[i];
+
+      if (pspec->owner_type != type)
+	continue;
+
+      check_property (pspec);
+    }
+
+  g_free (pspecs);
+  g_type_class_unref (klass);
+}
+
+static gboolean
+type_is_whitelisted (GType type)
+{
+  guint i;
+
+  if (!G_TYPE_IS_INSTANTIATABLE (type) ||
+      !g_type_is_a (type, G_TYPE_OBJECT))
+    return TRUE;
+
+  for (i = 0; i < G_N_ELEMENTS (type_exceptions); i++)
+    {
+      GType exception = g_type_from_name (type_exceptions[i]);
+
+      /* type hasn't been registered yet */
+      if (exception == G_TYPE_INVALID)
+        continue;
+
+      if (g_type_is_a (type, exception))
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
+int
+main (int argc, char **argv)
+{
+  const GType *all_types;
+  guint n_types = 0, i;
+  gint result;
+
+  /* These must be set before before gtk_test_init */
+  g_setenv ("GIO_USE_VFS", "local", TRUE);
+  g_setenv ("GSETTINGS_BACKEND", "memory", TRUE);
+
+  /* initialize test program */
+  gtk_test_init (&argc, &argv);
+  gtk_test_register_all_types ();
+
+  module = g_module_open (NULL, G_MODULE_BIND_LAZY);
+
+  all_types = gtk_test_list_all_types (&n_types);
+
+  for (i = 0; i < n_types; i++)
+    {
+      char *test_path;
+
+      if (type_is_whitelisted (all_types[i]))
+        continue;
+
+      test_path = g_strdup_printf ("/accessor-apis/%s", g_type_name (all_types[i]));
+
+      g_test_add_data_func (test_path, GSIZE_TO_POINTER (all_types[i]), test_accessors);
+
+      g_free (test_path);
+    }
+
+  result = g_test_run();
+
+  g_module_close (module);
+
+  return result;
+}
diff --git a/testsuite/gtk/meson.build b/testsuite/gtk/meson.build
index 333f4347cb..5dfaf65eac 100644
--- a/testsuite/gtk/meson.build
+++ b/testsuite/gtk/meson.build
@@ -10,6 +10,7 @@ endif
 tests = [
   ['accel'],
   ['accessible'],
+  ['accessor-apis'],
   ['action'],
   ['adjustment'],
   ['bitmask', ['../../gtk/gtkallocatedbitmask.c'], ['-DGTK_COMPILATION', '-UG_ENABLE_DEBUG']],