test-applyWINGS.R
In RMCDA: Multi-Criteria Decision Analysis

library(testthat)

test_that("apply.WINGS works for provided example and returns the expected structure", {

  mat <- matrix(c(75.5, 95, 770, 187, 179, 239, 237,
                  420, 91, 1365, 1120, 875, 1190, 200,
                  74.2, 70, 189, 210, 112, 217, 112,
                  2.8, 2.68, 7.9, 7.9, 4.43, 8.51, 8.53,
                  21.4, 22.1, 16.9, 14.4, 9.4, 11.5, 19.9,
                  0.37, 0.33, 0.04, 0.03, 0.016, 0.31, 0.29,
                  0.16, 0.16, 0.08, 0.08, 0.09, 0.07, 0.06), nrow=7)

  colnames(mat)<-c("Toughness Index",	"Yield Strength",	"Young's Modulus",
                  "Density",	"Thermal Expansion",	"Thermal Conductivity","Specific Heat")
  rownames(mat)<-c("AI 2024-T6", "AI 5052-O","SS 301 FH",
                  "SS 310-3AH","Ti-6AI-4V","Inconel 718","70Cu-30Zn")

  result <- apply.WINGS(mat)
  expect_type(result$r_plus_c, "double")
  expect_type(result$r_minus_c, "double")
  expect_type(result$weights, "double")
  #'
  expect_length(result$r_plus_c, nrow(mat))
  expect_length(result$r_minus_c, nrow(mat))
  expect_length(result$weights, nrow(mat))
})