add example test program

Makefile

@@ -29,6 +29,8 @@ XSTEST_HDRS=$(INCLUDE_DIR)/test/Config.h $(INCLUDE_DIR)/test/Service.h $(INCLUDE
 XSTEST_SRCS=$(SRC_DIR)/xs-test.cc $(SRC_DIR)/test/Config.cc $(SRC_DIR)/test/Service.cc $(SRC_DIR)/test/Tester.cc
 XSTEST_OBJS=$(subst $(REPO_DIR),$(BUILD_DIR),$(XSTEST_SRCS:.cc=.o))
 
+HELLO_WORLD_SRCS=$(REPO_DIR)/example/hello-world.cc
+HELLO_WORLD_OBJS=$(subst $(REPO_DIR),$(BUILD_DIR),$(HELLO_WORLD_SRCS:.cc=.o))
 
 all: $(BUILD_DIR)/xs-test
 
@@ -39,9 +41,16 @@ $(BUILD_DIR)/%.o: $(REPO_DIR)/%.cc $(XSTEST_HDRS)
 	mkdir -p $(dir $@)
 	$(CXX) -o $@ -c $(CXX_FLAGS) $<
 
+example: $(BUILD_DIR)/hello-word
+
+$(BUILD_DIR)/hello-word: $(HELLO_WORLD_OBJS)
+	$(CXX) -o $@ $(HELLO_WORLD_OBJS) $(LD_FLAGS) 
+
 clean:
 	rm -rf $(BUILD_DIR)/xs-test
+	rm -rf $(BUILD_DIR)/hello-world
 	rm -rf $(XSTEST_OBJS)
+	rm -rf $(HELLO_WORLD_OBJS)
 
 print-var:
 	echo $(XSTEST_OBJS)

example/hello-world.cc

+#include "positivegrid/exchange_server.h"
+
+#include <chrono>
+#include <string>
+#include <thread>
+
+
+int main()
+{
+    xs::ExchangeServer server("hello-world", {}, {}, 0, nullptr);
+    server.onCmd(
+        "GetGreetingMessage",
+        [&server](const std::string&, const std::string&) {
+            const auto name = server.runCmd("GetName", "");
+            return "Hello, " + name + "!";
+        }
+    );
+ 
+    using namespace std::chrono_literals; 
+    for (;;) {
+        std::this_thread::sleep_for(1s);
+    }
+}

example/hello-world.json

+{
+    "mockData": [
+        {
+            "command": "GetName",
+            "response": "Patrick"
+        }
+    ],
+    "script": [
+        {
+            "command": "GetGreetingMessage",
+            "expect": "Hello, Patrick!"
+        }
+    ]
+}

res/example/config.json

-{
-    "mockData": [
-        {
-            "command": "aaa",
-            "response": "123"
-        },
-        {
-            "event" : "bbb",
-            "response" : { "value": 456 }
-        }
-    ]
-}