1 files changed, 141 insertions, 0 deletions
diff --git a/tests/glib-fixture.h b/tests/glib-fixture.h
new file mode 100644
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--- /dev/null
+++ b/tests/glib-fixture.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2014 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
+ *
+ * Authors:
+ *   Charles Kerr <charles.kerr@canonical.com>
+ */
+
+#include <map>
+
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <gio/gio.h>
+
+#include <gtest/gtest.h>
+
+#include <locale.h> // setlocale()
+
+class GlibFixture : public ::testing::Test
+{
+  private:
+
+    GLogFunc realLogHandler;
+
+    std::map<GLogLevelFlags,size_t> expected_log;
+    std::map<GLogLevelFlags,std::vector<std::string>> log;
+
+    void test_log_counts()
+    {
+      const GLogLevelFlags levels_to_test[] = { G_LOG_LEVEL_ERROR,
+                                                G_LOG_LEVEL_CRITICAL,
+                                                G_LOG_LEVEL_MESSAGE,
+                                                G_LOG_LEVEL_WARNING };
+
+      for(const auto& level : levels_to_test)
+      {
+        const auto& v = log[level];
+        const auto n = v.size();
+
+        EXPECT_EQ(expected_log[level], n);
+
+        if (expected_log[level] != n)
+            for (size_t i=0; i<n; ++i)
+                g_message("%d %s", (n+1), v[i].c_str());
+      }
+
+      expected_log.clear();
+      log.clear();
+    }
+
+    static void default_log_handler(const gchar    * log_domain,
+                                    GLogLevelFlags   log_level,
+                                    const gchar    * message,
+                                    gpointer         self)
+    {
+      auto tmp = g_strdup_printf ("%s:%d \"%s\"", log_domain, (int)log_level, message);
+      static_cast<GlibFixture*>(self)->log[log_level].push_back(tmp);
+      g_free(tmp);
+    }
+
+  protected:
+
+    void increment_expected_errors(GLogLevelFlags level, size_t n=1)
+    {
+      expected_log[level] += n;
+    }
+
+    virtual void SetUp()
+    {
+      setlocale(LC_ALL, "C.UTF-8");
+
+      loop = g_main_loop_new(nullptr, false);
+
+      g_log_set_default_handler(default_log_handler, this);
+
+      g_unsetenv("DISPLAY");
+    }
+
+    virtual void TearDown()
+    {
+      test_log_counts();
+
+      g_log_set_default_handler(realLogHandler, this);
+
+      g_clear_pointer(&loop, g_main_loop_unref);
+    }
+
+  private:
+
+    static gboolean
+    wait_for_signal__timeout(gpointer name)
+    {
+      g_error("%s: timed out waiting for signal '%s'", G_STRLOC, (char*)name);
+      return G_SOURCE_REMOVE;
+    }
+
+    static gboolean
+    wait_msec__timeout(gpointer loop)
+    {
+      g_main_loop_quit(static_cast<GMainLoop*>(loop));
+      return G_SOURCE_CONTINUE;
+    }
+
+  protected:
+
+    /* convenience func to loop while waiting for a GObject's signal */
+    void wait_for_signal(gpointer o, const gchar * signal, const guint timeout_seconds=5)
+    {
+      // wait for the signal or for timeout, whichever comes first
+      const auto handler_id = g_signal_connect_swapped(o, signal,
+                                                       G_CALLBACK(g_main_loop_quit),
+                                                       loop);
+      const auto timeout_id = g_timeout_add_seconds(timeout_seconds,
+                                                    wait_for_signal__timeout,
+                                                    loop);
+      g_main_loop_run(loop);
+      g_source_remove(timeout_id);
+      g_signal_handler_disconnect(o, handler_id);
+    }
+
+    /* convenience func to loop for N msec */
+    void wait_msec(guint msec=50)
+    {
+      const auto id = g_timeout_add(msec, wait_msec__timeout, loop);
+      g_main_loop_run(loop);
+      g_source_remove(id);
+    }
+
+    GMainLoop * loop;
+};