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exercism fetch elixir dot-dsl

Dot Dsl

Write a Domain Specific Language similar to the Graphviz dot language.

A Domain Specific Language (DSL) is a small language optimized for a specific domain.

For example the dot language of Graphviz allows you to write a textual description of a graph which is then transformed into a picture by one of the graphviz tools (such as dot). A simple graph looks like this:

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graph {
    graph [bgcolor="yellow"]
    a [color="red"]
    b [color="blue"]
    a -- b [color="green"]
}

Putting this in a file example.dot and running dot example.dot -T png -o example.png creates an image example.png with red and blue circle connected by a green line on a yellow background.

Create a DSL similar to the dot language.

Running tests

Execute the tests with:

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$ elixir bob_test.exs

(Replace bob_test.exs with the name of the test file.)

Pending tests

In the test suites, all but the first test have been skipped.

Once you get a test passing, you can unskip the next one by commenting out the relevant @tag :pending with a # symbol.

For example:

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# @tag :pending
test "shouting" do
  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
end

Or, you can enable all the tests by commenting out the ExUnit.configure line in the test suite.

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# ExUnit.configure exclude: :pending, trace: true

For more detailed information about the Elixir track, please see the help page.

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.