# ==================================================================== #
# TITLE                                                                #
# Antimicrobial Resistance (AMR) Data Analysis for R                   #
#                                                                      #
# SOURCE                                                               #
# https://github.com/msberends/AMR                                     #
#                                                                      #
# LICENCE                                                              #
# (c) 2018-2021 Berends MS, Luz CF et al.                              #
# Developed at the University of Groningen, the Netherlands, in        #
# collaboration with non-profit organisations Certe Medical            #
# Diagnostics & Advice, and University Medical Center Groningen.       # 
#                                                                      #
# This R package is free software; you can freely use and distribute   #
# it for both personal and commercial purposes under the terms of the  #
# GNU General Public License version 2.0 (GNU GPL-2), as published by  #
# the Free Software Foundation.                                        #
# We created this package for both routine data analysis and academic  #
# research and it was publicly released in the hope that it will be    #
# useful, but it comes WITHOUT ANY WARRANTY OR LIABILITY.              #
#                                                                      #
# Visit our website for the full manual and a complete tutorial about  #
# how to conduct AMR data analysis: https://msberends.github.io/AMR/   #
# ==================================================================== #

test_df <- rbind(
  data.frame(
    date = as.Date(c("2015-01-01", "2015-10-01", "2016-02-04", "2016-12-31", "2017-01-01", "2017-02-01", "2017-02-05", "2020-01-01")),
    patient_id = "A"
  ),
  data.frame(
    date = as.Date(c("2015-01-01", "2016-02-01", "2016-12-31", "2017-01-01", "2017-02-03")),
    patient_id = "B"
  ))

expect_equal(get_episode(test_df$date, 365),
             c(1, 1, 2, 2, 2, 3, 3, 4, 1, 2, 2, 2, 3))
expect_equal(get_episode(test_df$date[which(test_df$patient_id == "A")], 365),
             c(1, 1, 2, 2, 2, 2, 3, 4))
expect_equal(get_episode(test_df$date[which(test_df$patient_id == "B")], 365),
             c(1, 2, 2, 2, 3))

if (AMR:::pkg_is_available("dplyr", min_version = "1.0.0")) {
  expect_identical(test_df %>% group_by(patient_id) %>% mutate(f = is_new_episode(date, 365)) %>% pull(f),
                   c(TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, TRUE))
  
  suppressMessages(
    x <- example_isolates %>%
      mutate(out = first_isolate(., include_unknown = TRUE, method = "episode-based", info = FALSE))
  )
  y <- example_isolates %>%
    group_by(patient_id, mo) %>%
    mutate(out = is_new_episode(date, 365))
  
  expect_identical(which(x$out), which(y$out))
}