Create IXExponentialBackoffTest.cpp

test/IXExponentialBackoffTest.cpp

@@ -0,0 +1,36 @@
+/*
+ *  IXExponentialBackoffTest.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2022 Machine Zone. All rights reserved.
+ */
+
+#include "IXTest.h"
+#include "catch.hpp"
+#include <iostream>
+#include <ixwebsocket/IXExponentialBackoff.h>
+#include <string.h>
+
+using namespace ix;
+
+namespace ix
+{
+    TEST_CASE("exponential_backoff", "[exponential_backoff]")
+    {
+        SECTION("1")
+        {
+            // First parameter is retrycount
+            REQUIRE(calculateRetryWaitMilliseconds(0, 10000, 100) == 100);
+            REQUIRE(calculateRetryWaitMilliseconds(1, 10000, 100) == 200);
+            REQUIRE(calculateRetryWaitMilliseconds(2, 10000, 100) == 400);
+            REQUIRE(calculateRetryWaitMilliseconds(3, 10000, 100) == 800);
+            REQUIRE(calculateRetryWaitMilliseconds(4, 10000, 100) == 1600);
+            REQUIRE(calculateRetryWaitMilliseconds(5, 10000, 100) == 3200);
+            REQUIRE(calculateRetryWaitMilliseconds(6, 10000, 100) == 6400);
+            REQUIRE(calculateRetryWaitMilliseconds(20, 10000, 100) == 10000);
+            REQUIRE(calculateRetryWaitMilliseconds(25, 10000, 100) == 10000);
+            
+            // FIXME bug when retrycount > 25
+        }
+    }
+
+} // namespace ix