Max Woolf has a GitHub project that provides examples of strings that could make your app not play nice. These can be used for manual and automated testing. The main .txt file consists of newline-delimited strings and comments which are preceded with
#. The comments divide the strings into sections for easy manual reading and copy/pasting into input forms. For those who want to access the strings programmatically, a
blns.json file is provided containing an array with all the comments stripped out.