[x] There's an issue with the test-as.keyvalue file. It is currently saved as "test-as.keyvalueR" rather than "test-as.keyvalue.R".
[ ] Also, this test file has an error. I believe instead of a <- as.keyvalue.classcodes(elixhauser, "icd10se") you should have a <- decoder::as.keyvalue(elixhauser, "icd10se"). And similarly within the test.
a <- as.keyvalue.classcodes(elixhauser, "icd10se")
you should havea <- decoder::as.keyvalue(elixhauser, "icd10se")
. And similarly within the test.