Testsuite: org.apache.tomcat.util.buf.TestStringUtils Tests run: 7, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec Testcase: testNullArrayCharFunctionStringBuilder took 0.012 sec Testcase: testNullIterableCharStringBuilder took 0 sec Testcase: testNullIterableCharFunctionStringBuilder took 0 sec Testcase: testNullArrayCharStringBuilder took 0.004 sec Testcase: testNullCollectionChar took 0.001 sec Testcase: testNullCollection took 0 sec Testcase: testNullArray took 0 sec