tests: Add a basic test for GIIrParser type parsing

This follows up from the previous two commits to add a unit test.

It doesn’t attempt to cover the multitude of other possible type parsing
conditions; at the moment it’s just a regression test for the previous
two commits, and somewhere to hang new tests on in future.

Signed-off-by: Philip Withnall <pwithnall@gnome.org>

girepository/tests/ir-parser.c

@@ -0,0 +1,106 @@
+/*
+ * Copyright 2025 GNOME Foundation, Inc.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ *
+ * 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:
+ *  - Philip Withnall <pwithnall@gnome.org>
+ */
+
+#include "config.h"
+
+#include "girepository.h"
+#include "girparser-private.h"
+
+static void
+test_type_parsing (void)
+{
+  const char *buffer_template = "<?xml version='1.0'?>"
+    "<repository version='1.2'"
+    "   xmlns='http://www.gtk.org/introspection/core/1.0'"
+    "   xmlns:c='http://www.gtk.org/introspection/c/1.0'>"
+      "<package name='TestNamespace-1.0'/>"
+      "<namespace name='TestNamespace' version='1.0'"
+      "   c:identifier-prefixes='test'"
+      "   c:symbol-prefixes='test'>"
+        "<function name='dummy' c:identifier='dummy'>"
+          "<return-value transfer-ownership='none'>"
+            "<type name='%s'/>"
+          "</return-value>"
+          "<parameters>"
+          "</parameters>"
+        "</function>"
+      "</namespace>"
+    "</repository>";
+  const struct
+    {
+      const char *type;
+      gboolean expected_success;
+    }
+  vectors[] =
+    {
+      { "GLib.Error", TRUE },
+      { "GLib.Error<IOError,FileError>", TRUE },
+      { "GLib.Error<IOError", FALSE },
+    };
+
+  g_test_summary ("Test parsing different valid and invalid types");
+
+  for (size_t i = 0; i < G_N_ELEMENTS (vectors); i++)
+    {
+      GIIrParser *parser = NULL;
+      GIIrModule *module;
+      GError *local_error = NULL;
+      char *buffer = NULL;
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+      buffer = g_strdup_printf (buffer_template, vectors[i].type);
+#pragma GCC diagnostic pop
+
+      parser = gi_ir_parser_new ();
+      module = gi_ir_parser_parse_string (parser, "TestNamespace",
+                                          "TestNamespace-1.0.gir",
+                                          buffer, -1,
+                                          &local_error);
+
+      if (vectors[i].expected_success)
+        {
+          g_assert_no_error (local_error);
+          g_assert_nonnull (module);
+        }
+      else
+        {
+          g_assert_error (local_error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT);
+          g_assert_null (module);
+        }
+
+      g_clear_error (&local_error);
+      g_clear_pointer (&parser, gi_ir_parser_free);
+      g_free (buffer);
+    }
+}
+
+int
+main (int argc,
+      char *argv[])
+{
+  g_test_init (&argc, &argv, NULL);
+
+  g_test_add_func ("/ir-parser/type-parsing", test_type_parsing);
+
+  return g_test_run ();
+}

girepository/tests/meson.build

@@ -50,6 +50,9 @@ if enable_gir
       'dependencies': [libffi_dep],
       'depends': glib_gir_testing_dep,
     },
+    'ir-parser' : {
+      'dependencies': [libgirepository_internals_dep],
+    },
     'object-info' : {
       'depends': gio_gir_testing_dep,
     },