The following parameter types are available by default:
| Type | Description |
{int} | Matches integers, for example 71 or -19. Converts value with as.integer. |
{float} | Matches floats, for example 3.6, .8 or -9.2. Converts value with as.double. |
{word} | Matches words without whitespace, for example banana (but not banana split). |
{string} | Matches single-quoted or double-quoted strings, for example "banana split" or 'banana split' (but not banana split). Only the text between the quotes will be extracted. The quotes themselves are discarded. |
To use custom parameter types, call define_parameter_type before cucumber::test is called.
Arguments
- name
The name of the parameter.
- regexp
A regular expression that the parameter will match on. Note that if you want to escape a special character, you need to use four backslashes.
- transformer
A function that will transform the parameter from a string to the desired type. Must be a function that requires only a single argument.
Examples
define_parameter_type("color", "red|blue|green", as.character)
define_parameter_type(
name = "sci_number",
regexp = "[+-]?\\\\d*\\\\.?\\\\d+(e[+-]?\\\\d+)?",
transform = as.double
)
if (FALSE) { # \dontrun{
#' tests/testthat/test-cucumber.R
cucumber::define_parameter_type("color", "red|blue|green", as.character)
cucumber::test(".", "./steps")
} # }