a <- maxample("animal")
p <- maxample("pop")

test_that("dimSums works", {
  ref1 <- new("magpie",
              .Data = structure(c(0, 0, 1, 1, 6, 4, 7, 5, 6, 4, 7, 5, 0, 0, 0, 0),
                                .Dim = c(2L, 2L, 4L),
                                .Dimnames = list(x.y.country.cell = c("5p75.53p25.NLD.14084", "6p25.53p25.NLD.14113"),
                                                 year.month.day = c("y2000.april.20", "y2000.may.20"),
                                                 type.color = c("animal.black", "animal.white",
                                                                "animal.red", "animal.brown"))))
  expect_identical(dimSums(a[1:2, 1:2, ], dim = "species"), ref1)
  expect_identical(dimSums(a[1:2, 1:2, ], dim = 3.2), ref1)

  ref2 <- new("magpie",
              .Data = structure(c(9397, 7653, 3475, 3345, 1900),
                                .Dim = c(1L, 1L, 5L),
                                .Dimnames = list(d1 = NULL, d2 = NULL,
                                                 type.species.color = c("animal.rabbit.black", "animal.rabbit.white",
                                                                      "animal.bird.black", "animal.bird.red",
                                                                      "animal.dog.brown"))))
  expect_identical(dimSums(a, dim = 1:2), ref2)
  expect_error(dimSums(1), "Input is not a MAgPIE object")
  expect_error(dimSums(a, dim = 4), "Invalid dimension")

  ax <- a[1, 1:2, 1:4]
  getItems(ax, dim = 3, raw = TRUE) <- c("animal.rabbit.black", "animal.rabbit.white",
                                         "animal.bird.black", "animal.bird.white")
  ref4 <- new("magpie",
              .Data = structure(c(12, 15), .Dim = c(1L, 2L, 1L),
                                .Dimnames = list(x.y.country.cell = "5p75.53p25.NLD.14084",
                                                 year.month.day = c("y2000.april.20", "y2000.may.20"),
                                                 type = "animal")))
  expect_identical(dimSums(ax, dim = c(3.2, 3.3)), ref4)

  ref5 <- new("magpie",
              .Data = structure(c(0, 13, 1, 13), .Dim = c(1L, 1L, 4L),
                                .Dimnames = list(d1 = NULL, d2 = NULL,
                                                 type.species.color = c("animal.rabbit.black", "animal.rabbit.white",
                                                                      "animal.bird.black", "animal.bird.white"))))
  expect_identical(dimSums(ax, dim = 1:2), ref5)

  ref3 <- new("magpie", .Data = structure(25770, .Dim = c(1L, 1L, 1L),
                                          .Dimnames = list(d1 = NULL, d2 = NULL, d3 = NULL)))
  expect_identical(dimSums(a, dim = 1:3), ref3)

  expect_true(all(dimSums(p, dim = 1) - colSums(p) == 0))
  expect_true(all(dimSums(p, dim = 2:3) - rowSums(p) == 0))
  expect_true(all(dimSums(p, dim = 1) / dim(p)[1] - colMeans(p) == 0))
  expect_true(all(magpply(p, mean, dim = 2:3) - rowMeans(p) == 0))

  p0 <- p[, , -1:-2]
  expect_null(dimSums(p0, dim = 3))
})