Write test functions for every mapper in separate package

[mortenwh]

We need to make proper tests for all mappers. There should probably be two tests for each - one with a given mapperName and one without. Test data can be added to the ftp-server like the present asar-file.
This probably don't need to be in its own branch, as nansat is independent of tests and we will continuously have to add new ones.

[asumak]

f4f9e9a : I created some mapper test functions:
asar, asterL1a, cosmoskymed, hirlam, landsat, meris, modisL1, ncep, generic, radarsat2

Can anyone make other mapper test functions?
Left mapper tests are follows:
aapp_l1b, aapp_l1c, amsr2_l3, ascat_nasa, case2reg, geostationary, globcolour_l3b, globcolour_l3m, goci_l1, hirlam_wind_netcdf, kmss, metno_hires_seaice, etno_local_hires_seaice, obpg_l2, obpg_l3, ocean_productivity, opendap, pathfinder52, s1a_l2, smos_mat, viirs_l1

[mortenwh]

Would it work to have a mapper_tests package in the root of the nansat repos and a tests module as nansat.tests which tests the core functionality of nansat (like tutorial now)? Could Travis CI then only run nansat.tests whereas we as the developers could test the mappers with the mapper_tests package?

[akorosov]

@neothemachine , I removed mapper_tests from packages in setup.py but nosetests still want;s to test the mappers and fails: https://travis-ci.org/nansencenter/nansat/builds/36542717
Why is that? How to prevent from testing in mapper_tests ?

[akorosov]

@neothemachine , Ok, it seems I figured it out ;)
https://travis-ci.org/nansencenter/nansat/builds/36544513

[akorosov]

Closed in 8fc536d
mapper_tests are moved into project root and excluded from nosetests and from installable packages; nansat/tests/ replace tutorial. More tests to be added in #91

[akorosov]

There is only one function for download in the DataForTestingMappers mappers. It downloads files into subdirs of the download dir recreating the structure on the FTP server.
There are only two functions fortesting all the mappers. They are called for each downloaded file (either with specification of the mapper, or without) in such a way that each call is considered as a separate test.