message("TESTING: typeOfClass()...") library("R.oo") type <- typeOfClass(NULL) print(type) stopifnot(is.na(type)) type <- typeOfClass(Object) print(type) stopifnot(type == "S3-Object") type <- typeOfClass("Object") print(type) stopifnot(type == "S3-Object") library("methods") type <- typeOfClass("data.frame") print(type) stopifnot(type == "S4") clazz <- getClass("data.frame") type <- typeOfClass(clazz) print(type) stopifnot(type == "S4") type <- typeOfClass("Non-Existing-Class") print(type) stopifnot(is.na(type)) message("TESTING: typeOfClass()...DONE")
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