<!DOCTYPE html>
<style>
div {
    font: 1em/1 Ahem;
    width: 1em;
}
span {
    color: lime;
    background: lime;
}
.normal {
    white-space: normal;
}
.pre {
    white-space: pre;
}
</style>
This test passes if there is a green square below. It tests that whitespace at the end of
an inline setting white-space:nowrap can be collapsed with a break at the start of the
next inline.<br>
<div class="pre"><span>xx
xx</span></div>