MoreStreamData

Additional generators based on StreamData.

Installation

Add more_stream_data to your list of dependencies in mix.exs

def deps do
  [
    {:more_stream_data, "~> 0.8", only: :test}
  ]
end

Refer to StreamData documentation for usage.

You can call additional generators directly in any testfile

defmodule MyTestMoule do
  use ExUnit.Case
  use ExUnitProperties

  property "strings matching regular expression" do
    regex = ~r/^[A-Z]_[a-z0-9]+$/

    check all string <- MoreStreamData.from_regex(regex) do
      assert Regex.match?(regex, string)
    end
  end
end

Roadmap

The goal is to port Python's Hypothesis built-in and external strategies considered useful for Elixir ecosystem.

• [ ] Strategies
  • [x] integers
  • [x] floats
    • [x] exclude_min and exclude_max options.
  • [x] decimal
  • [x] emails
  • [x] domains
  • [x] urls
  • [x] datetime
  • [x] time
  • [x] timedeltas
  • [x] ip_address
  • [x] from_regex
    • [ ] Newline setting (*ANYCRLF), (*NUL), etc.
    • [ ] \b word boundary
    • [x] xHH and x{HHH...} for hex characters
    • [x] Atomic groups: Always matches the first option
    • [ ] Lookarounds
      • [ ] Positive lookahead
      • [x] Negative lookahead
      • [ ] Positive lookbehind
      • [x] Negative lookbehind
    • [ ] Modifiers
      • [x] Case insensitive /i
      • [x] Extended /x
      • [ ] Unicode /u
      • [x] Dotall /s
      • [x] Multiline /m
      • [x] Firstline /f
      • [x] Ungreedy /U. Ignored since it does not affect string generation.
      • [x] Export /E. Ignored since it does not affect string generation.