# Note about numeric precision
# In the unit tests we use digits=10. Lowever values will result in problems for some datasets
test_that("fromJSON Matrix", {
  objects <- list(
    matrix(1:2, nrow=1),
    matrix(c(1,NA,2,NA), 2),

  lapply(objects, function(object){
    newobject <- fromJSON(toJSON(object));
    expect_true(inherits(newobject, "matrix"));
    expect_equal(object, newobject);

  expect_equal(fromJSON(toJSON(objects)), objects);

test_that("fromJSON Matrix with simplifyMatrix=FALSE", {
  expect_equal(fromJSON(toJSON(matrix(1)), simplifyMatrix=FALSE), list(1));
  expect_equal(fromJSON(toJSON(matrix(1)), simplifyVector=FALSE), list(list((1))));
  expect_equal(fromJSON(toJSON(matrix(NA)), simplifyMatrix=FALSE), list(NA));
  expect_equal(fromJSON(toJSON(matrix(NA)), simplifyVector=FALSE), list(list((NULL))));

test_that("fromJSON Matrix datasets", {
  objects <- Filter(is.matrix, lapply(ls("package:datasets"), get));

  lapply(objects, function(object){
    class(object) <- "matrix";
    newobject <- fromJSON(toJSON(object, digits=4))
    expect_true(inherits(newobject, "matrix"));
    expect_equal(dim(newobject), dim(object));
    attributes(newobject) <- attributes(object);

    # R has changed rounding algo in 4.0 and no longer matches printf
    #expect_equal(newobject, round(object,4));
    expect_equal(newobject, object, tolerance = 1e-4)

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jsonlite documentation built on June 22, 2024, 11:05 a.m.