diff --git a/test/Makefile b/test/Makefile
index a6f9c98..3d04f1e 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -42,6 +42,10 @@ TESTPROD += testdata
 testdata_SRCS += testdata.cpp
 TESTS += testdata
 
+TESTPROD += testinfo
+testinfo_SRCS += testinfo.cpp
+TESTS += testinfo
+
 TESTPROD += dummyserv
 dummyserv_SRCS += dummyserv.cpp
 # not a unittest
diff --git a/test/testinfo.cpp b/test/testinfo.cpp
new file mode 100644
index 0000000..e177cd2
--- /dev/null
+++ b/test/testinfo.cpp
@@ -0,0 +1,145 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * pvxs is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+#include <testMain.h>
+
+#include <epicsUnitTest.h>
+
+#include <epicsEvent.h>
+
+#include <pvxs/unittest.h>
+#include <pvxs/log.h>
+#include <pvxs/client.h>
+#include <pvxs/server.h>
+#include <pvxs/sharedpv.h>
+#include <pvxs/nt.h>
+
+namespace {
+using namespace pvxs;
+
+struct Tester {
+    Value initial;
+    server::SharedPV mbox;
+    server::Server serv;
+    client::Context cli;
+
+    Tester()
+        :initial(nt::NTScalar{TypeCode::Int32}.create())
+        ,mbox(server::SharedPV::buildReadonly())
+        ,serv(server::Config::localhost()
+              .build()
+              .addPV("mailbox", mbox))
+        ,cli(serv.clientConfig().build())
+    {
+        testShow()<<"Server:\n"<<serv.config()
+                  <<"Client:\n"<<cli.config();
+    }
+
+    void testWait()
+    {
+        Value actual;
+        epicsEvent done;
+
+        auto op = cli.info("mailbox")
+                .result([&actual, &done](Value&& val) {
+                    actual = std::move(val);
+                    done.trigger();
+                })
+                .exec();
+
+        cli.hurryUp();
+
+        if(testOk1(done.wait(5.0))) {
+            testEq(actual["value"].type(), TypeCode::Int32);
+        } else {
+            testSkip(1, "timeout");
+        }
+    }
+
+    void loopback()
+    {
+        testShow()<<__func__;
+
+        mbox.open(initial);
+        serv.start();
+
+        testWait();
+    }
+
+    void lazy()
+    {
+        testShow()<<__func__;
+
+        mbox.onFirstConnect([this](){
+            testShow()<<__func__;
+
+            mbox.open(initial);
+        });
+        mbox.onLastDisconnect([this](){
+            testShow()<<__func__;
+            mbox.close();
+        });
+
+        serv.start();
+
+        testWait();
+    }
+
+    void timeout()
+    {
+        testShow()<<__func__;
+
+        Value actual;
+        epicsEvent done;
+
+        // server not started
+
+        auto op = cli.info("mailbox")
+                .result([&actual, &done](Value&& val) {
+                    actual = std::move(val);
+                    done.trigger();
+                })
+                .exec();
+
+        cli.hurryUp();
+
+        testOk1(!done.wait(1.1));
+    }
+
+    void cancel()
+    {
+        testShow()<<__func__;
+
+        Value actual;
+        epicsEvent done;
+
+        serv.start();
+
+        // not storing Operation -> immediate cancel()
+        cli.info("mailbox")
+                .result([&actual, &done](Value&& val) {
+                    actual = std::move(val);
+                    done.trigger();
+                })
+                .exec();
+
+        cli.hurryUp();
+
+        testOk1(!done.wait(2.1));
+    }
+};
+
+} // namespace
+
+MAIN(testinfo)
+{
+    testPlan(6);
+    logger_config_env();
+    Tester().loopback();
+    Tester().lazy();
+    Tester().timeout();
+    Tester().cancel();
+    return testDone();
+}