The test checks whether the order of snippets does not play any role. The test
was made according to the bug #61.

>>>>templates/test.tpl
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<opt:extend file="a.tpl">
<opt:snippet name="C">C</opt:snippet>
<opt:snippet name="A">A</opt:snippet>
<opt:snippet name="B">B</opt:snippet>
</opt:extend>

>>>>templates/a.tpl
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<opt:root>
<opt:insert snippet="A">FAIL</opt:insert>
<opt:insert snippet="B">FAIL</opt:insert>
<opt:insert snippet="C">FAIL</opt:insert>
</opt:root>

>>>>expected.txt
OUTPUT

>>>>result.txt
ABC