TestNG Error Codes

We write automation framework using TestNG and when we run it we get errorssometimes. So, it becomes important for us to know about error messages. 


I have put some of the error messages that we get when we go wrong and execute TestNG XML file:

1.If two tests are having the same name then we see below error

at org.testng.TestNG.checkTestNames(TestNG.java:981)
at org.testng.TestNG.sanityCheck(TestNG.java:970)
at org.testng.TestNG.run(TestNG.java:1002)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:109)

2.If the testname doesnot enclosed in double quotes("") then we get below error


The value of attribute "name" associated with an element type "null" must not contain the '<' character.
 at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:335)
 at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88)
 at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
 at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
Caused by: org.xml.sax.SAXParseException: The value of attribute "name" associated with an element type "null" must not contain the '<' character.
atcom.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)

3.If the class name doesnt end with "/" character then we will see below error

org.testng.TestNGException: org.xml.sax.SAXParseException: The end-tag for element type "class" must end with a '>' delimiter.
 at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:335)
 at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88)
 at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
 at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
Caused by: org.xml.sax.SAXParseException: The end-tag for element type "class" must end with a '>' delimiter.

4. If there is no space between parameter name and value  fields then we will see below error 

Ex   :  
org.testng.TestNGException: org.xml.sax.SAXParseException: Element type "parameter" must be followed by either attribute specifications, ">" or "/>".
 at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:335)
 at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88)
 at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
 at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
Caused by: org.xml.sax.SAXParseException: Element type "parameter" must be followed by either attribute specifications, ">" or "/>".

5.If the parameter attribute doesnt end with "/" character then we will see below error

org.testng.TestNGException: org.xml.sax.SAXParseException: Element type "class" must be followed by either attribute specifications, ">" or "/>".
 at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:335)
 at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88)
 at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
 at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
Caused by: org.xml.sax.SAXParseException: Element type "class" must be followed by either attribute specifications, ">" or "/>".

6. If the two parameters have the same name and value attributes then we will see below error

org.testng.TestNGException: org.xml.sax.SAXParseException: Element type "class" must be followed by either attribute specifications, ">" or "/>".
 at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:335)
 at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88)
 at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
 at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
Caused by: org.xml.sax.SAXParseException: Element type "class" must be followed by either attribute specifications, ">" or "/>".

7.Make sure there are no spaces between "/" and  ">".If there are any spaces then we will see below error.

org.testng.TestNGException: org.xml.sax.SAXParseException: Element type "class" must be followed by either attribute specifications, ">" or "/>".
 at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:335)
 at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88)
 at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
 at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
Caused by: org.xml.sax.SAXParseException: Element type "class" must be followed by either attribute specifications, ">" or "/>".