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/setup-call.c

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2018 Purism SPC
+ *
+ * SPDX-License-Identifier: GPL-3.0+
+ */
+
+#include "setup-call.h"
+#include "calls-origin.h"
+
+void
+test_dummy_call_set_up (CallFixture *fixture,
+                        gconstpointer user_data)
+{
+  CallsOrigin *origin;
+  GList *calls;
+
+  test_dummy_origin_set_up (&fixture->parent, user_data);
+  origin = CALLS_ORIGIN (fixture->parent.dummy_origin);
+
+  calls_origin_dial (origin, TEST_CALL_NUMBER);
+
+  calls = calls_origin_get_calls (origin);
+  fixture->dummy_call = CALLS_DUMMY_CALL (calls->data);
+  g_list_free (calls);
+}
+
+
+void
+test_dummy_call_tear_down (CallFixture *fixture,
+                           gconstpointer user_data)
+{
+  fixture->dummy_call = NULL;
+  test_dummy_origin_tear_down (&fixture->parent, user_data);
+}