test_that("filter works with one path", {

    json <- '{"name": "bob", "attributes": {"age": 32, "gender": "male"}}'

    expect_identical(
      json %>% enter_object("attributes"),
      tbl_json(
        data.frame(document.id = 1L),
        list(list(age = 32L, gender = "male"))
      )
    )

  }
)

test_that("works with quoted or unquoted", {

  json <- '{"name": "bob", "attributes": {"age": 32, "gender": "male"}}'

  expect_identical(
    json %>% enter_object("attributes", "age"),
    json %>% enter_object(attributes, age)
  )

}
)

test_that("works with data masking", {
  json <- '{"name": "bob", "attributes": {"age": 32, "gender": "male"}}'
  testfunc <- function(obj, enter) {
    obj %>% enter_object({{enter}})
  }
  expect_identical(
    json %>% enter_object("attributes"),
    testfunc(json, "attributes")
  )
})

test_that("works with quasiquotation", {
  json <- '{"name": "bob", "attributes": {"age": 32, "gender": "male"}}'
  testfunc <- function(obj, ...) {
    obj %>% enter_object(...)
  }
  testfunc2 <- function(obj, vector) {
    obj %>% enter_object(!!!vector)
  }
  
  expect_identical(
    json %>% enter_object("attributes", "age"),
    testfunc(json, "attributes", "age")
  )
  
  expect_identical(
    json %>% enter_object("attributes", "age"),
    testfunc2(json, c("attributes", "age"))
  )
})

test_that("filter works with multiple depth paths", {

    json <- '{"name": "bob", "attributes": { "demographics": {"age": 32, "gender": "male"}}}'

    expect_identical(
      json %>% enter_object("attributes", "demographics"),
      tbl_json(
        data.frame(document.id = 1L),
        list(list(age = 32L, gender = "male"))
      )
    )

  }
)

test_that("filter removes records with missing path", {

    json <- c(
      '{"name": "bob", "attributes": {"age": 32, "gender": "male"}}',
      '{"name": "susan"}'
    )

    expect_identical(
      json %>% spread_values(name = jstring("name")) %>%
        enter_object("attributes"),
      tbl_json(
        data.frame(
          document.id = 1L,
          name = 'bob',
          stringsAsFactors = FALSE),
        list(list(age = 32L, gender = "male"))
      )
    )

  }
)

test_that("works if no paths exist", {

    json <- '{"name": "bob"}'

    expect_identical(
      json %>% spread_values(name = jstring("name")) %>%
        enter_object("attributes"),
      tbl_json(
        data.frame(
          document.id = integer(0),
          name = character(0),
          stringsAsFactors = FALSE),
        list()
      )
    )

  }
)

test_that("correctly handles character(0), {}, []", {

    empty <- tbl_json(
      data.frame(
        document.id = integer(0),
        stringsAsFactors = FALSE),
      list())

    expect_identical(
      character(0) %>% enter_object("name"),
      empty)

    expect_identical(
      '{}' %>% enter_object("name"),
      empty)

    expect_identical(
      '[]' %>% enter_object("name"),
      empty)

  }
)