# Copyright (C) 2018 Johannes Ranke
# Contact: jranke@uni-bremen.de

# This file is part of the R package mkin

# mkin is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.

# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.

# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>

context("Test fitting the decline of metabolites from their maximum")

test_that("Fitting from maximum mean value works", {
  SFO_SFO <- mkinmod(parent = mkinsub("SFO", "m1"),
                     m1 = mkinsub("SFO"))
  expect_error(mkinfit(SFO_SFO, FOCUS_2006_D, from_max_mean = TRUE))
  
  # We can either explicitly create a model for m1, or subset the data
  SFO_m1 <- mkinmod(m1 = mkinsub("SFO"))
  f.1 <- mkinfit(SFO_m1, FOCUS_2006_D, from_max_mean = TRUE, quiet = TRUE)
  expect_equivalent(endpoints(f.1)$distimes["m1", ], c(170.8, 567.5), 
                    scale = 1, tolerance = 0.1)

  f.2 <- mkinfit("SFO", subset(FOCUS_2006_D, name == "m1"), from_max_mean = TRUE, quiet = TRUE)
  expect_equivalent(endpoints(f.2)$distimes["m1", ], c(170.8, 567.5), 
                    scale = 1, tolerance = 0.1)
})