test_that("isolation index works", {
    left <- c(5, 5, 0, 0)
    right <- c(0, 0, 5, 5)
    expect_equal(isolation_index(left, right), 1)
    left <- c(5, 5, 5, 5)
    right <- c(5, 5, 5, 5)
    expect_equal(isolation_index(left, right), 0)
})

test_that("isolation index errors", {
    left <- c(5, 5, 0)
    right <- c(0, 0, 5, 5)
    expect_error(isolation_index(left, right))
})


test_that("dissimilarity index works", {
    left <- c(5, 5, 0, 0)
    right <- c(0, 0, 5, 5)
    expect_equal(dissimilarity_index(left, right), 1)
    left <- c(5, 5, 5, 5)
    right <- c(5, 5, 5, 5)
    expect_equal(isolation_index(left, right), 0)
})

test_that("dissimilarity index errors", {
    left <- c(5, 5, 0)
    right <- c(0, 0, 5, 5)
    expect_error(dissimilarity_index(left, right))
})

test_that("atkinson index works", {
    left <- c(5, 5, 0, 0)
    right <- c(0, 0, 5, 5)
    expect_equal(atkinson_index(left, right), 1)
    left <- c(5, 5, 5, 5)
    right <- c(5, 5, 5, 5)
    expect_equal(atkinson_index(left, right), 0)
})

test_that("atkinson index errors", {
    left <- c(5, 5, 0)
    right <- c(0, 0, 5, 5)
    expect_error(atkinson_index(left, right))
})