diff --git a/actions/sleep.py b/actions/sleep.py
index 1d3c479..bc7c3ae 100644
--- a/actions/sleep.py
+++ b/actions/sleep.py
@@ -11,7 +11,7 @@ class SleepAction(Action):
         """
         The sleep action simply passes along the packet it was given with an instruction for how long the engine should sleep before sending it.
         """
-        logger.debug("  - Adding %d sleep to given packet." % self.time)
+        logger.debug("  - Adding %g sleep to given packet." % self.time)
         packet.sleep = self.time
         return packet, None
 
@@ -20,7 +20,7 @@ class SleepAction(Action):
         Returns a string representation.
         """
         s = Action.__str__(self)
-        s += "{%d}" % self.time
+        s += "{%g}" % self.time
         return s
 
     def parse(self, string, logger):
diff --git a/tests/test_sleep.py b/tests/test_sleep.py
new file mode 100644
index 0000000..3f4a3e2
--- /dev/null
+++ b/tests/test_sleep.py
@@ -0,0 +1,37 @@
+from scapy.all import IP, TCP
+import evolve
+import actions.utils
+import actions.strategy
+import actions.packet
+import actions.sleep
+import sys
+# Include the root of the project
+sys.path.append("..")
+
+
+def test_basic_sleep(log_level):
+    """
+    Tests the sleep action primitive
+    """
+    logger = evolve.logger
+    evolve.set_logger(log_level)
+
+    sleep = actions.sleep.SleepAction(.5)
+    assert str(sleep) == "sleep{0.5}", "Sleep returned incorrect string representation: %s" % str(sleep)
+
+    packet = actions.packet.Packet(IP(src="127.0.0.1", dst="127.0.0.1")/TCP()/("data"))
+    packet1, packet2 = sleep.run(packet, logger)
+
+    assert packet1.sleep == .5, "Packet had wrong sleep value"
+
+def test_sleep_str_parse(log_level):
+    """
+    Tests stringing and parsing a sleep action with a float sleep time
+    """
+    logger = evolve.logger
+    evolve.set_logger(log_level)
+
+    strat = actions.utils.parse("[TCP:flags:A]-sleep{0.5}-|", logger)
+
+    assert strat.out_actions[0].action_root.time == .5
+    assert "0.5" in str(strat)