without_internet function

Make all HTTP requests raise an error

without_internet simulates the situation when any network request will fail, as in when you are without an internet connection. Any HTTP request through the verb functions in httr will raise an error.

without_internet(expr)

Arguments

• expr: Code to run inside the mock context

Returns

The result of expr

Details

The error message raised has a well-defined shape, made of three elements, separated by space: (1) the request method (e.g. "GET"); (2) the request URL; and (3) the request body, if present. The verb-expectation functions, such as expect_GET() and expect_POST(), look for this shape.

Examples

without_internet({
  expect_error(
    httr::GET("http://httpbin.org/get"),
    "GET http://httpbin.org/get"
  )
  expect_error(httr::PUT("http://httpbin.org/put",
    body = '{"a":1}'
  ),
  'PUT http://httpbin.org/put {"a":1}',
  fixed = TRUE
  )
})

See Also

block_requests() to enable mocking on its own (not in a context)