client: Change connection_zk to deliver watch callbacks on close.

Issue #58

src/zk/client_tests.cpp

@@ -0,0 +1,40 @@
+#include <zk/server/server_tests.hpp>
+
+#include "client.hpp"
+
+namespace zk
+{
+
+class client_tests :
+        public server::single_server_fixture
+{ };
+
+GTEST_TEST_F(client_tests, watch_close)
+{
+    client c   = get_connected_client();
+    auto watch = c.watch("/").get();
+
+    c.close();
+
+    // watch should be triggered with session closed
+    auto ev = watch.next().get();
+    CHECK_EQ(ev.type(), event_type::session);
+    CHECK_EQ(ev.state(), state::closed);
+}
+
+class stopping_client_tests :
+        public server::server_fixture
+{ };
+
+GTEST_TEST_F(stopping_client_tests, watch_server_stop)
+{
+    client c     = get_connected_client();
+    auto   watch = c.watch("/").get();
+
+    this->stop_server(true);
+
+    auto ev = watch.next().get();
+    CHECK_EQ(ev.type(), event_type::session);
+}
+
+}