R Under development (unstable) (2025-10-08 r88906 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2025 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(medicalcoder)
> 
> # lookup exact vs regex consistency
> lx <- lookup_icd_codes(c("E11.9","I50.9"), regex = FALSE)
> lr <- lookup_icd_codes(c("^E11\\.9$","^I50\\.9$"), regex = TRUE)
> stopifnot(all(lx$full_code %in% lr$full_code),
+           all(lr$full_code %in% lx$full_code))
> 
> # the following used to give an error:
> #   Error in merge.data.frame(x = input, y = matches, all.x = TRUE, by = c(ifelse(regex,  :
> #     negative length vectors are not allowed
> m <- tryCatch(lookup_icd_codes(x = "", regex = TRUE), error = function(e) e)
> stopifnot(inherits(m, "error"))
> 
> # out of the data.frame should be the same columns with or without matches
> m1 <- lookup_icd_codes(x = "", regex = FALSE)
> m2 <- lookup_icd_codes(x = "^$", regex = TRUE)
> m3 <- lookup_icd_codes(x = "C84", regex = FALSE)
> m4 <- lookup_icd_codes(x = "^C84$", regex = TRUE)
> 
> expected_regex_false_names <-
+   c("input_code",  "match_type", "icdv", "dx", "full_code", "code", "src", "known_start", "known_end", "assignable_start", "assignable_end")
> expected_regex_true_names <-
+   c("input_regex", "match_type", "icdv", "dx", "full_code", "code", "src", "known_start", "known_end", "assignable_start", "assignable_end")
> 
> stopifnot(
+   identical(names(m1), expected_regex_false_names),
+   identical(names(m2), expected_regex_true_names),
+   identical(names(m3), expected_regex_false_names),
+   identical(names(m4), expected_regex_true_names)
+ )
> 
> ################################################################################
> #                                 End of File                                  #
> ################################################################################
> 
> proc.time()
   user  system elapsed 
  12.29    0.84   13.12