Adds a test for an import with absolute path.
Adds a test for an import with absolute path.

BSI-Business-Systems-Integration-AG/lesscss-engine,cimi/lesscss-engine,cimi/lesscss-engine,BSI-Business-Systems-Integration-AG/lesscss-engine,BSI-Business-Systems-Integration-AG/lesscss-engine,asual/lesscss-engine,asual/lesscss-engine,asual/lesscss-engine