Nothing
options(stringsAsFactors=FALSE);
test_that("recover nested data frames", {
x1 <- x2 <- x3 <- x4 <- x5 <- x6 <- data.frame(foo=c(1:2));
x2$bar <- c("jeroen", "eli");
x3$bar <- x4$bar <- x5$bar <- x6$bar <- data.frame(name=c("jeroen", "eli"))
x4$bar$age <- x5$bar$age <- c(28, 24); x6$bar$age <- c(28, NA);
x5$bar$food <- data.frame(yum=c("Rice", "Pasta"));
x6$bar$food <- data.frame(yum=c(NA, "Pasta"));
#add to list
objects <- list(x1, x2, x3, x4, x5, x6)
#test all but list
lapply(objects, function(object){
expect_equal(fromJSON(toJSON(object)), object);
expect_equal(fromJSON(toJSON(object, na="null")), object);
expect_equal(names(fromJSON(toJSON(object), flatten = TRUE)), names(unlist(object[1,,drop=FALSE])));
});
#test all in list
expect_equal(fromJSON(toJSON(objects)), objects);
});
test_that("recover lists in data frames", {
x <- data.frame(author = c("Homer", "Virgil", "Jeroen"));
x$poems = list(c("Iliad", "Odyssey"), c("Eclogues", "Georgics", "Aeneid"), character());
y <- data.frame(author = c("Homer", "Virgil", "Jeroen"));
y$poems = list(
data.frame(title=c("Iliad", "Odyssey"), year=c(-1194, -800)),
data.frame(title=c("Eclogues", "Georgics", "Aeneid"), year=c(-44, -29, -19)),
data.frame()
);
z <- list(x=x, y=y);
zz <- list(x,y);
expect_equal(fromJSON(toJSON(x)), x);
expect_equal(fromJSON(toJSON(y)), y);
expect_equal(fromJSON(toJSON(z)), z);
expect_equal(fromJSON(toJSON(zz)), zz);
});
#note: nested matrix does not perfectly restore
test_that("nested matrix in data frame", {
x <- data.frame(foo=1:2)
x$bar <- matrix(c(1:5, NA), 2)
expect_true(validate(toJSON(x)))
y <- fromJSON(toJSON(x))
expect_s3_class(y, "data.frame");
expect_equal(names(x), names(y));
expect_equal(length(y[[1,"bar"]]), 3);
});
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