# setwd("C:/prj/campsismod/")
# roxygen2::roxygenise()
# setwd("C:/prj/campsismod/tests/")
# testFolder <<- "C:/prj/campsismod/tests/testthat/"

testFolder <- ""
overwriteNonRegressionFiles <- FALSE

toFile <- function(code, path) {
  fileConn <- file(path)
  writeLines(code, fileConn)
  close(fileConn)
}

campsisNonRegPath <- function(regFilename) {
  return(paste0(testFolder, "non_regression/campsis/", regFilename))
}

mrgsolveNonRegPath <- function(regFilename) {
  return(paste0(testFolder, "non_regression/mrgsolve/", regFilename, ".txt"))
}

rxodeNonRegPath <- function(regFilename) {
  return(paste0(testFolder, "non_regression/rxode/", regFilename, ".txt"))
}

campsisNonRegTest <- function(model, regFilename) {
  if (overwriteNonRegressionFiles) {
    model %>% write(file=campsisNonRegPath(regFilename))
  }
  expectedModel <- read.campsis(file=campsisNonRegPath(regFilename))
  expect_equal(model, expectedModel)
}

mrgsolveNonRegTest <- function(mrgmod, regFilename) {
  mrgmodCode <- mrgmod %>% toString()
  if (overwriteNonRegressionFiles) {
    toFile(mrgmodCode, mrgsolveNonRegPath(regFilename))
  }
  expectedMrgmodCode <- readLines(con=mrgsolveNonRegPath(regFilename)) %>% paste0(collapse="\n")
  expect_equal(mrgmodCode, expectedMrgmodCode)
}

rxodeNonRegTest <- function(rxmod, regFilename) {
  rxmodCode <- rxmod@code %>% paste0(collapse="\n")
  if (overwriteNonRegressionFiles) {
    toFile(rxmodCode, rxodeNonRegPath(regFilename))
  }
  expectedRxmodCode <- readLines(con=rxodeNonRegPath(regFilename)) %>% paste0(collapse="\n")
  expect_equal(rxmodCode, expectedRxmodCode)
}

readCampsisModelNoParams <- function(file) {
  # Only first warning is actually checked
  model <- expect_warning(read.campsis(file),
                          regexp="No file '(theta|omega|sigma)\\.csv' could be found")
  return(model)
}

onCran <- function() {
  # Copied from testthat:::on_cran() 
  return(!interactive() && !envVarIsTrue("NOT_CRAN"))
}

envVarIsTrue <- function(x) {
  return(isTRUE(as.logical(Sys.getenv(x, "false"))))
}

skipTests <- function(name, default) {
  option <- getCampsismodOption()
  if (is.null(option)) {
    return(default)
  } else {
    value <- option[[name]]
    if (is.null(value)) {
      return(default)
    } else {
      return(value)
    }
  }
}

skipPerformanceTests <- function() {
  # On CRAN, default value is TRUE
  # FALSE otherwise
  return(skipTests(name="SKIP_PERFORMANCE_TESTS", default=onCran()))
}

getCampsismodOption <- function() {
  return(getOption("campsismod.options"))
}