This enables tests that were commented out.
It is supposed to go in after fixing WLS.loglike as discussed in #1170
I cannot find the commit for WLS.loglike in any of bashtage's PRs right now.
If the change is not included in any of bashtage's PRs, I will make a separate PR, that also fixes the failing tests because we will use a different definition or normalization than Stata.
the tests don't fail with current master:
I had changed GLSAR to subclass GLS instead of WLS which has the correct loglike
GLSHet which subclasses WLS doesn't have unit tests yet. (I didn't find a direct equivalent in Stata or R, IIRC)
Coverage remained the same when pulling d955aac on josef-pkt:enable_WLS_llf_tests into 9d4b1f8 on statsmodels:master.
TST: enable tests for llf after change to WLS.loglike see #1170
rebased and force pushed
should be ready to merge when TravisCI comes back green
note: the commit message is a bit misleading because the unit tests don't use WLS, and don't check the change in PR #1253
Coverage remained the same when pulling 1ac21e4 on josef-pkt:enable_WLS_llf_tests into f974da3 on statsmodels:master.