source('../gsDesign_independent_code.R')

#-----------------------------------
### Testing sfTrimmed function
#-----------------------------------


testthat::test_that("Test: alpha - Checking Variable Type, Out-of-Range", {
  tx <- (0:100) / 100
  param <- list(trange = c(.2, .8), sf = gsDesign::sfHSD, param = 1)

  testthat::expect_error(gsDesign::sfTrimmed(alpha = "abc", t = c(.1, .4), param),
    info = "Checking for incorrect variable type"
  )

  testthat::expect_error(gsDesign::sfTrimmed(alpha = 0, t = c(.1, .4), param),
    info = "Checking for out-of-range variable value"
  )


  testthat::expect_error(gsDesign::sfTrimmed(alpha = -1, t = c(.1, .4), param),
    info = "Checking for out-of-range variable value"
  )
})


# t is numeric vector
testthat::test_that("Test: t - Checking Variable Type, 
                    Out-of-Range, Order-of-List", {
  param <- list(trange = c(.2, .8), sf = gsDesign::sfHSD, param = 1)

  testthat::expect_error(gsDesign::sfTrimmed(alpha = .025, t = "a", param),
    info = "Checking for incorrect variable type"
  )

  testthat::expect_error(gsDesign::sfTrimmed(alpha = .025, t = c("a", "b"), param),
    info = "Checking for incorrect variable type"
  )

  testthat::expect_error(gsDesign::sfTrimmed(alpha = .025, t = c(-.5, .75), param),
    info = "Checking for out-of-range variable value"
  )

  testthat::expect_error(gsDesign::sfTrimmed(alpha = .025, t = c(.5, -.75), param),
    info = "Checking for out-of-range variable value"
  )

  testthat::expect_error(gsDesign::sfTrimmed(alpha = .025, t = c(1, -5), param),
    info = "Checking for out-of-range variable value"
  )
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .025, t = c(-1, 5), param),
    info = "Checking for out-of-range variable value"
  )
})


testthat::test_that("Test: param - Checking Variable Type, Out-of-Range, Order-of-List", {

  # Testing for sfTrimmed.param.trange
  tx <- (0:100) / 100
  param <- list(trange = "a", sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for incorrect variable type"
  )

  param <- list(trange = .3, sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for incorrect variable type"
  )

  param <- list(trange = c("a", "b"), sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for incorrect variable type"
  )


  param <- list(trange = c(0, -8), sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )


  param <- list(trange = c(.8, .5), sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )

  param <- list(trange = c(.8, .8), sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )

  param <- list(trange = c(.0, .0), sf = gsDesign::sfHSD, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for order of the list"
  )

  ## Testing for sfTrimmed.param.param <TBD>
  param <- list(trange = c(.2, .8), sf = gsDesign::sfHSD, param = "a")
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )

  param <- list(trange = c(.2, .8), sf = gsDesign::sfHSD, param = c(0, 1))
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )

  param <- list(trange = c(.2, .8), sf = gsDesign::sfHSD, param = NULL)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )




  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param = param <- list(trange = c(.2, .8), sf = sfHSD1, param = 1)),
    info = "Checking for out-of-range variable value"
  )

  param <- list(trange = c(.2, .8), sf = NULL, param = 1)
  testthat::expect_error(gsDesign::sfTrimmed(alpha = .05, t = tx, param),
    info = "Checking for out-of-range variable value"
  )
})


testthat::test_that("Test: output validation for sp funtion - sfCauchy, 
                    Source: gsDesign_independent_code.R", {
  alpha <- 0.05
  tx <- c(0.167, 0.333, 0.5, 0.667, 0.833, 1)
  param <- list(trange = c(.2, .8), sf = gsDesign::sfCauchy, param = c(1, 2))

  spend <- gsDesign::sfTrimmed(alpha, tx, param)$spend
  expected_spend <- validate_sfTrimmed(alpha, tx, param)
  expect_equal(spend, expected_spend)
})


testthat::test_that("Test: output validation for sp funtion - sfPower, 
                    Source: gsDesign_independent_code.R", {
  alpha <- 0.05
  tx <- c(0.167, 0.333, 0.5, 0.667, 0.833, 1)
  param <- list(trange = c(.2, .8), sf = gsDesign::sfPower, param = 2)

  spend <- gsDesign::sfTrimmed(alpha, tx, param)$spend
  expected_spend <- validate_sfTrimmed(alpha, tx, param)
  expect_equal(spend, expected_spend)
})


testthat::test_that("Test: output validation sp funtion - sfExtremeValue
                     Source: gsDesign_independent_code.R", {
  alpha <- 0.05
  tx <- c(0.167, 0.333, 0.5, 0.667, 0.833, 1)
  param <- list(trange = c(.2, .8), sf = gsDesign::sfExtremeValue, param = c(0.1, 0.2))

  spend <- gsDesign::sfTrimmed(alpha, tx, param)$spend
  expected_spend <- validate_sfTrimmed(alpha, tx, param)
  expect_equal(spend, expected_spend)
})