We need an owning container to keep the data alive when the _data function computes the expected value instead of passing it as a literal string, so replace the QByteArrayView we used so far with a const QByteArray. If a test failed, print the tail ends of the failing strings. This is useful when toString() implementations printing the operands of the failed toString()-under-test result comparison decide to truncate the output. It works around the fact that we both test toString() and use toString() to report any failure. As a drive-by, add a missing blank line between function definitions. Amends a2551c45d496c23045eb8451e080e75b2f8b42c1. Pick-to: 6.6 Change-Id: I0b217aeb1a6d475df8e8b9fb821046f1cceb1a3e Reviewed-by: Jason McDonald <macadder1@gmail.com>