Move plugin specific tests into dedicated directory

This will prove beneficial when we also add tests for the policy engine
plugins. The increased locality is also nice to have.

plugins/provider/tests/test-provider.c

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2018 Purism SPC
+ *
+ * SPDX-License-Identifier: GPL-3.0+
+ */
+
+#include "setup-provider.h"
+#include "calls-provider.h"
+#include "calls-origin.h"
+#include "calls-message-source.h"
+#include "common.h"
+
+#include <gtk/gtk.h>
+#include <string.h>
+
+static void
+test_dummy_provider_object (ProviderFixture *fixture,
+                            gconstpointer user_data)
+{
+  g_assert_true (G_IS_OBJECT (fixture->dummy_provider));
+  g_assert_true (CALLS_IS_MESSAGE_SOURCE (fixture->dummy_provider));
+  g_assert_true (CALLS_IS_PROVIDER (fixture->dummy_provider));
+}
+
+
+static void
+test_dummy_provider_get_name (ProviderFixture *fixture,
+                              gconstpointer user_data)
+{
+  CallsProvider *provider;
+  const gchar *name;
+
+  provider = CALLS_PROVIDER (fixture->dummy_provider);
+
+  name = calls_provider_get_name (provider);
+  g_assert_nonnull (name);
+  g_assert_cmpuint (strlen (name), >, 0U);
+}
+
+static void
+test_dummy_provider_origins (ProviderFixture *fixture,
+                             gconstpointer user_data)
+{
+  GListModel *origins;
+
+  origins = calls_provider_get_origins
+    (CALLS_PROVIDER (fixture->dummy_provider));
+  g_assert_cmpuint (g_list_model_get_n_items (origins), ==, 1);
+}
+
+
+gint
+main (gint   argc,
+      gchar *argv[])
+{
+  gtk_test_init (&argc, &argv, NULL);
+
+
+#define add_test(name) add_calls_test(Provider, provider, name)
+
+  add_test(object);
+  add_test(get_name);
+  add_test(origins);
+
+#undef add_test
+
+
+  return g_test_run();
+}