Test: Making tests late is not good for the health of your software

The test was not working since we were not outputting the file created by fuse
and the right parameters were not passed to format_json.py

tools/tests/fuse-doc.should_get

-!LAUNCH: python ../fuse.py ../../doc/analysis-example1.vidjil ../../doc/analysis-example2.vidjil | python ../format_json.py
+!LAUNCH: python ../fuse.py ../../doc/analysis-example1.vidjil ../../doc/analysis-example2.vidjil; cat fused.vidjil | python ../format_json.py -1 -u
 
 $ Fuse the two examples (three samples, two identical)
-fe1:"segmented": [335662, 335662, 410124]
+e1:"segmented": [335662, 335662, 410124]
 
 $ IGH and TRG germlines
-fe1:"germline": {"TRG": [250000, 250000, 300000], "IGH": [85662, 85662, 10124]}
+e1:"germline": {"TRG": [250000, 250000, 300000], "IGH": [85662, 85662, 10124]}