Nothing
test_that("compile", {
skip_if_not_installed("gurobi")
# create data
cost <- terra::rast(matrix(c(1, 2, 2, NA), ncol = 4))
features <- c(
terra::rast(matrix(c(2, 1, 1, 0), ncol = 4)),
terra::rast(matrix(c(10, 10, 10, 10), ncol = 4))
)
names(features) <- make.unique(names(features))
# create problem
p <-
problem(cost, features) %>%
add_min_set_objective() %>%
add_absolute_targets(c(2, 10)) %>%
add_top_portfolio(5) %>%
add_gurobi_solver(gap = 0.2, verbose = FALSE)
# compile problem
o <- compile(p)
# tests
expect_inherits(o, "OptimizationProblem")
})
test_that("solve (single zone)", {
skip_on_cran()
skip_if_not_installed("gurobi")
# create data
cost <- terra::rast(matrix(c(1, 2, 2, NA), ncol = 4))
features <- c(
terra::rast(matrix(c(2, 1, 1, 0), ncol = 4)),
terra::rast(matrix(c(10, 10, 10, 10), ncol = 4))
)
names(features) <- make.unique(names(features))
locked_in <- 2
# create problem
p <-
problem(cost, features) %>%
add_min_set_objective() %>%
add_absolute_targets(c(2, 10)) %>%
add_locked_in_constraints(locked_in) %>%
add_top_portfolio(number_solutions = 5) %>%
add_gurobi_solver(gap = 1, verbose = FALSE)
# solve problem
expect_warning(
s <- solve(p),
"Portfolio could only"
) # tests
expect_inherits(s, "list")
expect_length(s, 3) # only three feasible solutions exist
expect_true(all_elements_inherit(s, "SpatRaster"))
expect_named(s, paste0("solution_", seq_along(s)))
for (i in seq_along(s))
expect_true(
all(
terra::global(s[[i]] * features, "sum", na.rm = TRUE)[[1]] >= c(2, 10)
)
)
})
test_that("solve (multiple zones)", {
skip_on_cran()
skip_if_not_installed("gurobi")
# import data
sim_zones_pu_raster <- get_sim_zones_pu_raster()
sim_zones_features <- get_sim_zones_features()
# create problem
p <-
problem(sim_zones_pu_raster, sim_zones_features) %>%
add_min_set_objective() %>%
add_absolute_targets(
matrix(
2, nrow = number_of_features(sim_zones_features),
ncol = number_of_zones(sim_zones_features)
)
) %>%
add_top_portfolio(number_solutions = 5) %>%
add_binary_decisions() %>%
add_gurobi_solver(gap = 0, verbose = FALSE)
# solve problem
s <- solve(p)
# tests
expect_inherits(s, "list")
expect_length(s, 5)
expect_true(all_elements_inherit(s, "SpatRaster"))
expect_named(s, paste0("solution_", seq_along(s)))
for (i in seq_along(s))
for (z in seq_len(number_of_zones(sim_zones_features)))
expect_true(
all(
terra::global(
s[[i]][[z]] * sim_zones_features[[z]], "sum", na.rm = TRUE
) >= 2
)
)
})
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