test_that("can send file", {
  path <- withr::local_tempfile()
  # curl requests in 64kb chunks so this will hopefully illustrate
  # any subtle problems
  x <- strrep("x", 128 * 1024)
  writeChar(x, path, nchar(x))

  resp <- request_test("/post") %>%
    req_body_file(path, type = "text/plain") %>%
    req_perform()

  json <- resp_body_json(resp)
  expect_equal(json$headers$`Content-Type`, "text/plain")
  expect_equal(json$data, x)
})

test_that("can send file with redirect", {

  str <- paste(letters, collapse = "")
  path <- tempfile()
  writeChar(str, path)

  resp <- request_test("/redirect-to?url=/post&status_code=307") %>%
    req_body_file(path, type = "text/plain") %>%
    req_perform()

  expect_equal(resp_status(resp), 200)
  expect_equal(url_parse(resp$url)$path, "/post")
  expect_equal(resp_body_json(resp)$data, str)
})

test_that("errors if file doesn't exist", {
  expect_snapshot(
    req_body_file(request_test(), "doesntexist", type = "text/plain"),
    error = TRUE
  )
})

test_that("can send string", {
  resp <- request_test("/post") %>%
    req_body_raw("test", type = "text/plain") %>%
    req_perform()

  json <- resp_body_json(resp)
  expect_equal(json$headers$`Content-Type`, "text/plain")
  expect_equal(json$data, "test")
})

test_that("can send any type of object as json", {
  req <- request_test("/post") %>% req_body_json(mtcars)
  expect_equal(req$body$data, mtcars)

  data <- list(a = "1", b = "2")
  resp <- request_test("/post") %>%
    req_body_json(data) %>%
    req_perform()
  json <- resp_body_json(resp)
  expect_equal(json$json, data)

  resp <- request_test("/post") %>%
    req_body_json(letters) %>%
    req_perform()
  json <- resp_body_json(resp)
  expect_equal(json$json, as.list(letters))
})

test_that("can use custom json type", {
  resp <- request_test("/post") %>%
    req_body_json(mtcars, type = "application/ld+json") %>%
    req_perform()

  expect_equal(
    resp_body_json(resp)$headers$`Content-Type`,
    "application/ld+json"
  )
})

test_that("non-json type errors", {
  expect_snapshot(
    req_body_json(request_test(), mtcars, type = "application/xml"),
    error = TRUE
  )
})

test_that("can modify json data", {
  req <- request_test() %>%
    req_body_json(data = list(a = 1, b = 2, d = 4)) %>%
    req_body_json_modify(a = 10, b = NULL, c = 3)
   expect_equal(req$body$data, list(a = 10, d = 4, c = 3))

  req <- request_test() %>%
    req_body_json(data = list(a = list(b = list(c = 1, d = 2), e = 3))) %>%
    req_body_json_modify(a = list(b = list(c = 101), e = 103))
   expect_equal(req$body$data, list(a = list(b = list(c = 101, d = 2), e = 103)))

})

test_that("can send named elements as form/multipart", {
  data <- list(a = "1", b = "2")

  resp <- request_test("/post") %>%
    req_body_form(!!!data) %>%
    req_perform()
  json <- resp_body_json(resp)
  expect_equal(json$headers$`Content-Type`, "application/x-www-form-urlencoded")
  expect_equal(json$form, data)

  resp <- request_test("/post") %>%
    req_body_multipart(!!!data) %>%
    req_perform()
  json <- resp_body_json(resp)
  expect_match(json$headers$`Content-Type`, "multipart/form-data; boundary=-")
  expect_equal(json$form, list(a = "1", b = "2"))
})

test_that("can modify body data", {
  req1 <- request_test() %>% req_body_form(a = 1)
  expect_equal(req1$body$data, list(a = I("1")))

  req2 <- req1 %>% req_body_form(b = 2)
  expect_equal(req2$body$data, list(a = I("1"), b = I("2")))

  req3 <- req1 %>% req_body_form(a = 3, a = 4)
  expect_equal(req3$body$data, list(a = I("3"), a = I("4")))
})

test_that("can upload file with multipart", {
  skip_on_os("windows") # fails due to line ending difference

  path <- tempfile()
  writeLines("this is a test", path)

  resp <- request_test("/post") %>%
    req_body_multipart(file = curl::form_file(path)) %>%
    req_perform()
  json <- resp_body_json(resp)
  expect_equal(
    json$files$file$value,
    paste0(
      "data:application/octet-stream;base64,",
      openssl::base64_encode("this is a test\n")
    )
  )
})

test_that("can override body content type", {
  req <- request_test("/post") %>%
    req_body_raw('{"x":"y"}') %>%
    req_headers("content-type" = "application/json")
  resp <- req_perform(req)
  headers <- resp_body_json(resp)$headers
  expect_equal(headers$`Content-Type`, "application/json")
  expect_equal(headers$`content-type`, NULL)
})

test_that("no issues with partial name matching", {
  req <- request_test("/get") %>%
    req_body_multipart(d = "some data")

  expect_named(req$body$data, "d")
})

test_that("can't change body type", {
  req <- request("http://example.com") %>% req_body_raw(raw(1))
  expect_snapshot(req %>% req_body_json(list(x = 1)), error = TRUE)
})