packrat/lib/x86_64-w64-mingw32/3.6.1/jsonlite/tests/testthat/test-toJSON-numeric.R

In jmcascalheira/LGMIberiaCluster: Research compendium for the paper "Human adaptations and palaeoenvironmental record during the Last Glacial Maximum in the Iberian Peninsula"

context("toJSON Numeric")

test_that("Encoding Numbers", {
  expect_that(toJSON(35), equals("[35]"));
  expect_that(toJSON(35L), equals("[35]"));
  expect_that(toJSON(c(35, pi), digits=5), equals("[35,3.14159]"));
  expect_that(toJSON(pi, digits=0), equals("[3]"));
  expect_that(toJSON(pi, digits=2), equals("[3.14]"));
  expect_that(toJSON(pi, digits=10), equals("[3.1415926536]"));
  expect_that(toJSON(c(pi, NA), na="string", digits=5), equals("[3.14159,\"NA\"]"));
  expect_that(toJSON(c(pi, NA), na="null", digits=5), equals("[3.14159,null]"));
  expect_that(toJSON(c(pi, NA), na="null", digits=5), equals("[3.14159,null]"));
  expect_that(toJSON(c(1478002353.51369, -521997646.486311) * 1000, digits = 0), equals("[1478002353514,-521997646486]"));
});

test_that("Encoding Numbers in Data Frame", {
  expect_that(toJSON(data.frame(foo=35)), equals("[{\"foo\":35}]"));
  expect_that(toJSON(data.frame(foo=35L)), equals("[{\"foo\":35}]"));
  expect_that(toJSON(data.frame(foo=c(35, pi)), digits=5), equals("[{\"foo\":35},{\"foo\":3.14159}]"));
  expect_that(toJSON(data.frame(foo=pi), digits=0), equals("[{\"foo\":3}]"));
  expect_that(toJSON(data.frame(foo=pi), digits=2), equals("[{\"foo\":3.14}]"));
  expect_that(toJSON(data.frame(foo=pi), digits=10), equals("[{\"foo\":3.1415926536}]"));
  expect_that(toJSON(data.frame(foo=c(pi, NA)), digits=5), equals("[{\"foo\":3.14159},{}]"));
  expect_that(toJSON(data.frame(foo=c(pi, NA)), na="string", digits=5), equals("[{\"foo\":3.14159},{\"foo\":\"NA\"}]"));
  expect_that(toJSON(data.frame(foo=c(pi, NA)), na="null", digits=5), equals("[{\"foo\":3.14159},{\"foo\":null}]"));
});

test_that("Force decimal works", {
  # Force decimal for doubles
  expect_equal(toJSON(100), '[100]')
  expect_equal(toJSON(100, always_decimal = TRUE), '[100.0]')
  expect_equal(toJSON(12.000000000001, always_decimal = TRUE), '[12.0]')

  # But not for integers
  expect_equal(toJSON(100L), '[100]')
  expect_equal(toJSON(100L, always_decimal = TRUE), '[100]')

  # Test range
  x <- 10^c(-15 : 20)
  x1 <- c(rev(-x), x)
  x2 <- 1.2345 * x1
  expect_equal(as.list(x1), fromJSON(toJSON(x1), simplifyVector = FALSE))
  expect_equal(as.list(x2), fromJSON(toJSON(x2, digits = 9), simplifyVector = FALSE))

  # always_decimal makes sure that doubles stay real
  y2 <- fromJSON(toJSON(x1, digits = 9, always_decimal = TRUE), simplifyVector = FALSE)
  expect_identical(as.list(x1), y2)
})