headerManager.add(new Header("1stLevelTestHeader", "testValue1"));
HeaderManager headerManager2 = new HeaderManager();
headerManager2.add(new Header("2ndLevelTestHeader", "testValue2"));
DebugSampler debugSampler = new DebugSampler();
debugSampler.addProperty(new StringProperty("name", "DebugSampler_50799"));
debugSampler.setRunningVersion(true);
assertTrue(debugSampler.getProperty("HeaderManager.headers") instanceof NullProperty);
debugSampler.addTestElement(headerManager);
assertFalse(debugSampler.getProperty("HeaderManager.headers") instanceof NullProperty);
assertEquals(debugSampler.getProperty("HeaderManager.headers").getStringValue() ,"[1stLevelTestHeader\ttestValue1]");