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{
"authors": [
"Teapane"
],
"contributors": [
"angelikatyborska",
"Cohen-Carlisle",
"dalexj",
"devonestes",
"gmile",
"henrik",
"jwworth",
"lpil",
"martinsvalin",
"neenjaw",
"parkerl",
"rubysolo",
"sotojuan",
"waiting-for-dev"
],
"files": {
"solution": [
"lib/acronym.ex"
],
"test": [
"test/acronym_test.exs"
],
"example": [
".meta/example.ex"
]
},
"blurb": "Convert a long phrase to its acronym.",
"source": "Julien Vanier",
"source_url": "https://github.com/monkbroc"
}

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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"
[
inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
]

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elixir/acronym/.gitignore vendored Normal file
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# The directory Mix will write compiled artifacts to.
/_build/
# If you run "mix test --cover", coverage assets end up here.
/cover/
# The directory Mix downloads your dependencies sources to.
/deps/
# Where third-party dependencies like ExDoc output generated docs.
/doc/
# Ignore .fetch files in case you like to edit your project deps locally.
/.fetch
# If the VM crashes, it generates a dump, let's ignore it too.
erl_crash.dump
# Also ignore archive artifacts (built via "mix archive.build").
*.ez
# Ignore package tarball (built via "mix hex.build").
acronym-*.tar

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elixir/acronym/HELP.md Normal file
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# Help
## Running the tests
From the terminal, change to the base directory of the exercise then execute the tests with:
```bash
$ mix test
```
This will execute the test file found in the `test` subfolder -- a file ending in `_test.exs`
Documentation:
* [`mix test` - Elixir's test execution tool](https://hexdocs.pm/mix/Mix.Tasks.Test.html)
* [`ExUnit` - Elixir's unit test library](https://hexdocs.pm/ex_unit/ExUnit.html)
## Pending tests
In test suites of practice exercises, all but the first test have been tagged to be 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:
```elixir
# @tag :pending
test "shouting" do
assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
end
```
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:
```bash
$ mix test --include pending
```
Or, you can enable all the tests by commenting out the `ExUnit.configure` line in the file `test/test_helper.exs`.
```elixir
# ExUnit.configure(exclude: :pending, trace: true)
```
## Useful `mix test` options
* `test/<FILE>.exs:LINENUM` - runs only a single test, the test from `<FILE>.exs` whose definition is on line `LINENUM`
* `--failed` - runs only tests that failed the last time they ran
* `--max-failures` - the suite stops evaluating tests when this number of test failures
is reached
* `--seed 0` - disables randomization so the tests in a single file will always be ran
in the same order they were defined in
## Submitting your solution
You can submit your solution using the `exercism submit lib/acronym.ex` command.
This command will upload your solution to the Exercism website and print the solution page's URL.
It's possible to submit an incomplete solution which allows you to:
- See how others have completed the exercise
- Request help from a mentor
## Need to get help?
If you'd like help solving the exercise, check the following pages:
- The [Elixir track's documentation](https://exercism.org/docs/tracks/elixir)
- The [Elixir track's programming category on the forum](https://forum.exercism.org/c/programming/elixir)
- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
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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elixir/acronym/README.md Normal file
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# Acronym
Welcome to Acronym on Exercism's Elixir Track.
If you need help running the tests or submitting your code, check out `HELP.md`.
## Instructions
Convert a phrase to its acronym.
Techies love their TLA (Three Letter Acronyms)!
Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).
Punctuation is handled as follows: hyphens are word separators (like whitespace); all other punctuation can be removed from the input.
For example:
| Input | Output |
| ------------------------- | ------ |
| As Soon As Possible | ASAP |
| Liquid-crystal display | LCD |
| Thank George It's Friday! | TGIF |
## Source
### Created by
- @Teapane
### Contributed to by
- @angelikatyborska
- @Cohen-Carlisle
- @dalexj
- @devonestes
- @gmile
- @henrik
- @jwworth
- @lpil
- @martinsvalin
- @neenjaw
- @parkerl
- @rubysolo
- @sotojuan
- @waiting-for-dev
### Based on
Julien Vanier - https://github.com/monkbroc

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defmodule Acronym do
@doc """
Generate an acronym from a string.
"This is a string" => "TIAS"
"""
@spec abbreviate(String.t()) :: String.t()
def abbreviate(string) do
string
|> String.split([" ", "-", "_"], trim: true)
|> Enum.map(&String.first/1)
|> Enum.join()
|> String.upcase()
end
end

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elixir/acronym/mix.exs Normal file
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defmodule Acronym.MixProject do
use Mix.Project
def project do
[
app: :acronym,
version: "0.1.0",
# elixir: "~> 1.8",
start_permanent: Mix.env() == :prod,
deps: deps()
]
end
# Run "mix help compile.app" to learn about applications.
def application do
[
extra_applications: [:logger]
]
end
# Run "mix help deps" to learn about dependencies.
defp deps do
[
# {:dep_from_hexpm, "~> 0.3.0"},
# {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
]
end
end

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defmodule AcronymTest do
use ExUnit.Case
test "it produces acronyms from title case" do
assert Acronym.abbreviate("Portable Networks Graphic") === "PNG"
end
# @tag :pending
test "it produces acronyms from lower case" do
assert Acronym.abbreviate("Ruby on Rails") === "ROR"
end
# @tag :pending
test "it ignores punctuation" do
assert Acronym.abbreviate("First in, First out") === "FIFO"
end
# @tag :pending
test "it produces acronyms from phrases with acronyms" do
assert Acronym.abbreviate("GNU Image Manipulation Program") === "GIMP"
end
# @tag :pending
test "it produces acronyms ignoring punctuation and casing" do
assert Acronym.abbreviate("Complementary Metal-Oxide semiconductor") === "CMOS"
end
# @tag :pending
test "it produces a very long abbreviation" do
assert Acronym.abbreviate(
"Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me"
) === "ROTFLSHTMDCOALM"
end
# @tag :pending
test "it produces acronyms from phrases with consecutive delimiters" do
assert Acronym.abbreviate("Something - I made up from thin air") === "SIMUFTA"
end
# @tag :pending
test "it produces acronyms from phrases with apostrophes" do
assert Acronym.abbreviate("Halley's Comet") === "HC"
end
# @tag :pending
test "it produces acronyms from phrases with underscore emphasis" do
assert Acronym.abbreviate("The Road _Not_ Taken") === "TRNT"
end
end

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ExUnit.start()
ExUnit.configure(exclude: :pending, trace: true)