R Under development (unstable) (2026-02-01 r89366 ucrt) -- "Unsuffered Consequences"
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> 
> # Base R Regression Tests for placematchr
> # Ensures critical functionality without dependencies
> 
> library(placematchr)
> 
> message("Running Base R Tests...")
Running Base R Tests...
> 
> # 1. Normalization: German
> # -----------------------
> # Basic
> stopifnot(normalize_city("München", "DE") == "muenchen")
> # Exonym
> stopifnot(normalize_city("Munich", "DE") == "muenchen")
> stopifnot(normalize_city("Cologne", "DE") == "koeln")
> # Suburbs (Garching b. München)
> # "b." -> "bei " -> suffix strip -> "garching"
> stopifnot(normalize_city("Garching b. München", "DE") == "garching")
> 
> # 2. Normalization: France
> # ------------------------
> # Suburb
> stopifnot(normalize_city("Champs-sur-Marne", "FR") == "champs")
> # Exonym
> stopifnot(normalize_city("Dunkirk", "FR") == "dunkerque")
> 
> # 3. Normalization: Spain
> # -----------------------
> # Inversion: "Rozas de Madrid, Las" -> "Las Rozas de Madrid" -> "sevilla" (No, Rozas)
> # "Las Rozas" -> "rozas" (Input)
> # Ref inversion check logic is inside 'normalize', but works on strings.
> # "Rozas de Madrid, Las" -> "las rozas de madrid" -> strip articles -> "rozas madrid"
> stopifnot(grepl("rozas", normalize_city("Rozas de Madrid, Las", "ES")))
> 
> # 4. Matching (Integration)
> # -------------------------
> # Valid match
> res <- match_city("Munich", country="DE")
> if (!match_city("Munich", "DE")$city_clean %in% c("muenchen")) {
+     stop("Failed to match Munich to muenchen")
+ }
> 
> message("All Base R Tests Passed!")
All Base R Tests Passed!
> 
> proc.time()
   user  system elapsed 
   0.54    0.07    0.62