acronym
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{
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"authors": [
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"Teapane"
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],
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"contributors": [
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"angelikatyborska",
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"Cohen-Carlisle",
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"dalexj",
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"devonestes",
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"gmile",
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"henrik",
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"jwworth",
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"lpil",
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"martinsvalin",
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"neenjaw",
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"parkerl",
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"rubysolo",
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"sotojuan",
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"waiting-for-dev"
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],
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"files": {
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"solution": [
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"lib/acronym.ex"
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],
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"test": [
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"test/acronym_test.exs"
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],
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"example": [
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".meta/example.ex"
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]
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},
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"blurb": "Convert a long phrase to its acronym.",
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"source": "Julien Vanier",
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"source_url": "https://github.com/monkbroc"
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}
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{"track":"elixir","exercise":"acronym","id":"6e61a6a0f47e4396aad6d4854fe80fb4","url":"https://exercism.org/tracks/elixir/exercises/acronym","handle":"negrienko","is_requester":true,"auto_approve":false}
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# Used by "mix format"
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[
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inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
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]
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# The directory Mix will write compiled artifacts to.
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/_build/
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# If you run "mix test --cover", coverage assets end up here.
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/cover/
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# The directory Mix downloads your dependencies sources to.
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/deps/
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# Where third-party dependencies like ExDoc output generated docs.
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/doc/
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# Ignore .fetch files in case you like to edit your project deps locally.
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/.fetch
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# If the VM crashes, it generates a dump, let's ignore it too.
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erl_crash.dump
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# Also ignore archive artifacts (built via "mix archive.build").
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*.ez
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# Ignore package tarball (built via "mix hex.build").
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acronym-*.tar
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# Help
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## Running the tests
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From the terminal, change to the base directory of the exercise then execute the tests with:
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```bash
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$ mix test
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```
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This will execute the test file found in the `test` subfolder -- a file ending in `_test.exs`
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Documentation:
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* [`mix test` - Elixir's test execution tool](https://hexdocs.pm/mix/Mix.Tasks.Test.html)
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* [`ExUnit` - Elixir's unit test library](https://hexdocs.pm/ex_unit/ExUnit.html)
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## Pending tests
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In test suites of practice exercises, all but the first test have been tagged to be skipped.
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Once you get a test passing, you can unskip the next one by commenting out the relevant `@tag :pending` with a `#` symbol.
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For example:
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```elixir
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# @tag :pending
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test "shouting" do
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assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
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end
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```
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If you wish to run all tests at once, you can include all skipped test by using the `--include` flag on the `mix test` command:
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```bash
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$ mix test --include pending
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```
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Or, you can enable all the tests by commenting out the `ExUnit.configure` line in the file `test/test_helper.exs`.
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```elixir
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# ExUnit.configure(exclude: :pending, trace: true)
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```
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## Useful `mix test` options
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* `test/<FILE>.exs:LINENUM` - runs only a single test, the test from `<FILE>.exs` whose definition is on line `LINENUM`
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* `--failed` - runs only tests that failed the last time they ran
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* `--max-failures` - the suite stops evaluating tests when this number of test failures
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is reached
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* `--seed 0` - disables randomization so the tests in a single file will always be ran
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in the same order they were defined in
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## Submitting your solution
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You can submit your solution using the `exercism submit lib/acronym.ex` command.
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This command will upload your solution to the Exercism website and print the solution page's URL.
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It's possible to submit an incomplete solution which allows you to:
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- See how others have completed the exercise
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- Request help from a mentor
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## Need to get help?
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If you'd like help solving the exercise, check the following pages:
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- The [Elixir track's documentation](https://exercism.org/docs/tracks/elixir)
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- The [Elixir track's programming category on the forum](https://forum.exercism.org/c/programming/elixir)
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- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
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- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
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Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
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If you're stuck on something, it may help to look at some of the [available resources](https://exercism.org/docs/tracks/elixir/resources) out there where answers might be found.
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# Acronym
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Welcome to Acronym on Exercism's Elixir Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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Convert a phrase to its acronym.
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Techies love their TLA (Three Letter Acronyms)!
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Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).
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Punctuation is handled as follows: hyphens are word separators (like whitespace); all other punctuation can be removed from the input.
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For example:
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| Input | Output |
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| ------------------------- | ------ |
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| As Soon As Possible | ASAP |
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| Liquid-crystal display | LCD |
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| Thank George It's Friday! | TGIF |
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## Source
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### Created by
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- @Teapane
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### Contributed to by
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- @angelikatyborska
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- @Cohen-Carlisle
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- @dalexj
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- @devonestes
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- @gmile
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- @henrik
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- @jwworth
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- @lpil
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- @martinsvalin
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- @neenjaw
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- @parkerl
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- @rubysolo
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- @sotojuan
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- @waiting-for-dev
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### Based on
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Julien Vanier - https://github.com/monkbroc
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defmodule Acronym do
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@doc """
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Generate an acronym from a string.
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"This is a string" => "TIAS"
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"""
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@spec abbreviate(String.t()) :: String.t()
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def abbreviate(string) do
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string
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|> String.split([" ", "-", "_"], trim: true)
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|> Enum.map(&String.first/1)
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|> Enum.join()
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|> String.upcase()
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end
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end
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defmodule Acronym.MixProject do
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use Mix.Project
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def project do
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[
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app: :acronym,
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version: "0.1.0",
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# elixir: "~> 1.8",
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start_permanent: Mix.env() == :prod,
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deps: deps()
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]
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end
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# Run "mix help compile.app" to learn about applications.
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def application do
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[
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extra_applications: [:logger]
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]
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end
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# Run "mix help deps" to learn about dependencies.
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defp deps do
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[
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# {:dep_from_hexpm, "~> 0.3.0"},
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# {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
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]
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end
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end
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defmodule AcronymTest do
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use ExUnit.Case
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test "it produces acronyms from title case" do
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assert Acronym.abbreviate("Portable Networks Graphic") === "PNG"
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end
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# @tag :pending
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test "it produces acronyms from lower case" do
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assert Acronym.abbreviate("Ruby on Rails") === "ROR"
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end
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# @tag :pending
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test "it ignores punctuation" do
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assert Acronym.abbreviate("First in, First out") === "FIFO"
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end
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# @tag :pending
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test "it produces acronyms from phrases with acronyms" do
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assert Acronym.abbreviate("GNU Image Manipulation Program") === "GIMP"
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end
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# @tag :pending
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test "it produces acronyms ignoring punctuation and casing" do
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assert Acronym.abbreviate("Complementary Metal-Oxide semiconductor") === "CMOS"
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end
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# @tag :pending
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test "it produces a very long abbreviation" do
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assert Acronym.abbreviate(
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"Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me"
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) === "ROTFLSHTMDCOALM"
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end
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# @tag :pending
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test "it produces acronyms from phrases with consecutive delimiters" do
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assert Acronym.abbreviate("Something - I made up from thin air") === "SIMUFTA"
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end
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# @tag :pending
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test "it produces acronyms from phrases with apostrophes" do
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assert Acronym.abbreviate("Halley's Comet") === "HC"
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end
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# @tag :pending
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test "it produces acronyms from phrases with underscore emphasis" do
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assert Acronym.abbreviate("The Road _Not_ Taken") === "TRNT"
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end
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end
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ExUnit.start()
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ExUnit.configure(exclude: :pending, trace: true)
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