By default, all new generated Elixir apps via mix newinclude a nice installation snippet
in the README.md.
However, I am always forgetting to update the version constraint in the README.md whenever I bump my app to a new version. Well, no more, after using this simple unit test:
test "README install version check" do
app = :my_app
app_version = "#{Application.spec(app, :vsn)}"
readme = File.read!("README.md")
[_, readme_versions] = Regex.run(~r/{:#{app}, "(.+)"}/, readme)
assert Version.match?(
app_version,
readme_versions
),
"""
Install version constraint in README.md does not match to current app version.
Current App Version: #{app_version}
Readme Install Versions: #{readme_versions}
"""
end
Of course you will need to update the app value to whatever your app’s name is.
Enjoy!
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