ahmedryasser opened a new pull request, #16112:
URL: https://github.com/apache/kafka/pull/16112
The testInvalidPort() test is designed to verify that the checkWithoutLookup
method correctly handles invalid port numbers. In this case, the port number
"70000" is invalid because port numbers in TCP/IP are 16 bit so they can only
range from 0 to 65535. Therefore, when the checkWithoutLookup method is called
with "localhost:70000" as an argument, it should throw a ConfigException. The
assertThrows method is used to assert that a specific type of exception is
thrown. It takes two arguments: the type of exception expected and a lambda
expression that executes the code that is expected to throw the exception. In
this test, assertThrows is expected to catch a ConfigException when
checkWithoutLookup("localhost:70000") is called. If a ConfigException is
thrown, the test passes. If not, the test fails. This ensures that the method
is correctly validating port numbers and throwing an exception when an invalid
port is encountered.
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