beer song elixir solution

elixir/beer-song/.exercism/metadata.json

@@ -0,0 +1 @@
+{"track":"elixir","exercise":"beer-song","id":"0a7b5577f23646cbb666a837ef613b1c","url":"https://exercism.io/my/solutions/0a7b5577f23646cbb666a837ef613b1c","handle":"Xevion","is_requester":true,"auto_approve":false}

elixir/beer-song/.formatter.exs

@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]

elixir/beer-song/.gitignore

@@ -0,0 +1,24 @@
+# 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").
+beer_song-*.tar
+

elixir/beer-song/README.md

@@ -0,0 +1,363 @@
+# Beer Song
+
+Recite the lyrics to that beloved classic, that field-trip favorite: 99 Bottles of Beer on the Wall.
+
+Note that not all verses are identical.
+
+```text
+99 bottles of beer on the wall, 99 bottles of beer.
+Take one down and pass it around, 98 bottles of beer on the wall.
+
+98 bottles of beer on the wall, 98 bottles of beer.
+Take one down and pass it around, 97 bottles of beer on the wall.
+
+97 bottles of beer on the wall, 97 bottles of beer.
+Take one down and pass it around, 96 bottles of beer on the wall.
+
+96 bottles of beer on the wall, 96 bottles of beer.
+Take one down and pass it around, 95 bottles of beer on the wall.
+
+95 bottles of beer on the wall, 95 bottles of beer.
+Take one down and pass it around, 94 bottles of beer on the wall.
+
+94 bottles of beer on the wall, 94 bottles of beer.
+Take one down and pass it around, 93 bottles of beer on the wall.
+
+93 bottles of beer on the wall, 93 bottles of beer.
+Take one down and pass it around, 92 bottles of beer on the wall.
+
+92 bottles of beer on the wall, 92 bottles of beer.
+Take one down and pass it around, 91 bottles of beer on the wall.
+
+91 bottles of beer on the wall, 91 bottles of beer.
+Take one down and pass it around, 90 bottles of beer on the wall.
+
+90 bottles of beer on the wall, 90 bottles of beer.
+Take one down and pass it around, 89 bottles of beer on the wall.
+
+89 bottles of beer on the wall, 89 bottles of beer.
+Take one down and pass it around, 88 bottles of beer on the wall.
+
+88 bottles of beer on the wall, 88 bottles of beer.
+Take one down and pass it around, 87 bottles of beer on the wall.
+
+87 bottles of beer on the wall, 87 bottles of beer.
+Take one down and pass it around, 86 bottles of beer on the wall.
+
+86 bottles of beer on the wall, 86 bottles of beer.
+Take one down and pass it around, 85 bottles of beer on the wall.
+
+85 bottles of beer on the wall, 85 bottles of beer.
+Take one down and pass it around, 84 bottles of beer on the wall.
+
+84 bottles of beer on the wall, 84 bottles of beer.
+Take one down and pass it around, 83 bottles of beer on the wall.
+
+83 bottles of beer on the wall, 83 bottles of beer.
+Take one down and pass it around, 82 bottles of beer on the wall.
+
+82 bottles of beer on the wall, 82 bottles of beer.
+Take one down and pass it around, 81 bottles of beer on the wall.
+
+81 bottles of beer on the wall, 81 bottles of beer.
+Take one down and pass it around, 80 bottles of beer on the wall.
+
+80 bottles of beer on the wall, 80 bottles of beer.
+Take one down and pass it around, 79 bottles of beer on the wall.
+
+79 bottles of beer on the wall, 79 bottles of beer.
+Take one down and pass it around, 78 bottles of beer on the wall.
+
+78 bottles of beer on the wall, 78 bottles of beer.
+Take one down and pass it around, 77 bottles of beer on the wall.
+
+77 bottles of beer on the wall, 77 bottles of beer.
+Take one down and pass it around, 76 bottles of beer on the wall.
+
+76 bottles of beer on the wall, 76 bottles of beer.
+Take one down and pass it around, 75 bottles of beer on the wall.
+
+75 bottles of beer on the wall, 75 bottles of beer.
+Take one down and pass it around, 74 bottles of beer on the wall.
+
+74 bottles of beer on the wall, 74 bottles of beer.
+Take one down and pass it around, 73 bottles of beer on the wall.
+
+73 bottles of beer on the wall, 73 bottles of beer.
+Take one down and pass it around, 72 bottles of beer on the wall.
+
+72 bottles of beer on the wall, 72 bottles of beer.
+Take one down and pass it around, 71 bottles of beer on the wall.
+
+71 bottles of beer on the wall, 71 bottles of beer.
+Take one down and pass it around, 70 bottles of beer on the wall.
+
+70 bottles of beer on the wall, 70 bottles of beer.
+Take one down and pass it around, 69 bottles of beer on the wall.
+
+69 bottles of beer on the wall, 69 bottles of beer.
+Take one down and pass it around, 68 bottles of beer on the wall.
+
+68 bottles of beer on the wall, 68 bottles of beer.
+Take one down and pass it around, 67 bottles of beer on the wall.
+
+67 bottles of beer on the wall, 67 bottles of beer.
+Take one down and pass it around, 66 bottles of beer on the wall.
+
+66 bottles of beer on the wall, 66 bottles of beer.
+Take one down and pass it around, 65 bottles of beer on the wall.
+
+65 bottles of beer on the wall, 65 bottles of beer.
+Take one down and pass it around, 64 bottles of beer on the wall.
+
+64 bottles of beer on the wall, 64 bottles of beer.
+Take one down and pass it around, 63 bottles of beer on the wall.
+
+63 bottles of beer on the wall, 63 bottles of beer.
+Take one down and pass it around, 62 bottles of beer on the wall.
+
+62 bottles of beer on the wall, 62 bottles of beer.
+Take one down and pass it around, 61 bottles of beer on the wall.
+
+61 bottles of beer on the wall, 61 bottles of beer.
+Take one down and pass it around, 60 bottles of beer on the wall.
+
+60 bottles of beer on the wall, 60 bottles of beer.
+Take one down and pass it around, 59 bottles of beer on the wall.
+
+59 bottles of beer on the wall, 59 bottles of beer.
+Take one down and pass it around, 58 bottles of beer on the wall.
+
+58 bottles of beer on the wall, 58 bottles of beer.
+Take one down and pass it around, 57 bottles of beer on the wall.
+
+57 bottles of beer on the wall, 57 bottles of beer.
+Take one down and pass it around, 56 bottles of beer on the wall.
+
+56 bottles of beer on the wall, 56 bottles of beer.
+Take one down and pass it around, 55 bottles of beer on the wall.
+
+55 bottles of beer on the wall, 55 bottles of beer.
+Take one down and pass it around, 54 bottles of beer on the wall.
+
+54 bottles of beer on the wall, 54 bottles of beer.
+Take one down and pass it around, 53 bottles of beer on the wall.
+
+53 bottles of beer on the wall, 53 bottles of beer.
+Take one down and pass it around, 52 bottles of beer on the wall.
+
+52 bottles of beer on the wall, 52 bottles of beer.
+Take one down and pass it around, 51 bottles of beer on the wall.
+
+51 bottles of beer on the wall, 51 bottles of beer.
+Take one down and pass it around, 50 bottles of beer on the wall.
+
+50 bottles of beer on the wall, 50 bottles of beer.
+Take one down and pass it around, 49 bottles of beer on the wall.
+
+49 bottles of beer on the wall, 49 bottles of beer.
+Take one down and pass it around, 48 bottles of beer on the wall.
+
+48 bottles of beer on the wall, 48 bottles of beer.
+Take one down and pass it around, 47 bottles of beer on the wall.
+
+47 bottles of beer on the wall, 47 bottles of beer.
+Take one down and pass it around, 46 bottles of beer on the wall.
+
+46 bottles of beer on the wall, 46 bottles of beer.
+Take one down and pass it around, 45 bottles of beer on the wall.
+
+45 bottles of beer on the wall, 45 bottles of beer.
+Take one down and pass it around, 44 bottles of beer on the wall.
+
+44 bottles of beer on the wall, 44 bottles of beer.
+Take one down and pass it around, 43 bottles of beer on the wall.
+
+43 bottles of beer on the wall, 43 bottles of beer.
+Take one down and pass it around, 42 bottles of beer on the wall.
+
+42 bottles of beer on the wall, 42 bottles of beer.
+Take one down and pass it around, 41 bottles of beer on the wall.
+
+41 bottles of beer on the wall, 41 bottles of beer.
+Take one down and pass it around, 40 bottles of beer on the wall.
+
+40 bottles of beer on the wall, 40 bottles of beer.
+Take one down and pass it around, 39 bottles of beer on the wall.
+
+39 bottles of beer on the wall, 39 bottles of beer.
+Take one down and pass it around, 38 bottles of beer on the wall.
+
+38 bottles of beer on the wall, 38 bottles of beer.
+Take one down and pass it around, 37 bottles of beer on the wall.
+
+37 bottles of beer on the wall, 37 bottles of beer.
+Take one down and pass it around, 36 bottles of beer on the wall.
+
+36 bottles of beer on the wall, 36 bottles of beer.
+Take one down and pass it around, 35 bottles of beer on the wall.
+
+35 bottles of beer on the wall, 35 bottles of beer.
+Take one down and pass it around, 34 bottles of beer on the wall.
+
+34 bottles of beer on the wall, 34 bottles of beer.
+Take one down and pass it around, 33 bottles of beer on the wall.
+
+33 bottles of beer on the wall, 33 bottles of beer.
+Take one down and pass it around, 32 bottles of beer on the wall.
+
+32 bottles of beer on the wall, 32 bottles of beer.
+Take one down and pass it around, 31 bottles of beer on the wall.
+
+31 bottles of beer on the wall, 31 bottles of beer.
+Take one down and pass it around, 30 bottles of beer on the wall.
+
+30 bottles of beer on the wall, 30 bottles of beer.
+Take one down and pass it around, 29 bottles of beer on the wall.
+
+29 bottles of beer on the wall, 29 bottles of beer.
+Take one down and pass it around, 28 bottles of beer on the wall.
+
+28 bottles of beer on the wall, 28 bottles of beer.
+Take one down and pass it around, 27 bottles of beer on the wall.
+
+27 bottles of beer on the wall, 27 bottles of beer.
+Take one down and pass it around, 26 bottles of beer on the wall.
+
+26 bottles of beer on the wall, 26 bottles of beer.
+Take one down and pass it around, 25 bottles of beer on the wall.
+
+25 bottles of beer on the wall, 25 bottles of beer.
+Take one down and pass it around, 24 bottles of beer on the wall.
+
+24 bottles of beer on the wall, 24 bottles of beer.
+Take one down and pass it around, 23 bottles of beer on the wall.
+
+23 bottles of beer on the wall, 23 bottles of beer.
+Take one down and pass it around, 22 bottles of beer on the wall.
+
+22 bottles of beer on the wall, 22 bottles of beer.
+Take one down and pass it around, 21 bottles of beer on the wall.
+
+21 bottles of beer on the wall, 21 bottles of beer.
+Take one down and pass it around, 20 bottles of beer on the wall.
+
+20 bottles of beer on the wall, 20 bottles of beer.
+Take one down and pass it around, 19 bottles of beer on the wall.
+
+19 bottles of beer on the wall, 19 bottles of beer.
+Take one down and pass it around, 18 bottles of beer on the wall.
+
+18 bottles of beer on the wall, 18 bottles of beer.
+Take one down and pass it around, 17 bottles of beer on the wall.
+
+17 bottles of beer on the wall, 17 bottles of beer.
+Take one down and pass it around, 16 bottles of beer on the wall.
+
+16 bottles of beer on the wall, 16 bottles of beer.
+Take one down and pass it around, 15 bottles of beer on the wall.
+
+15 bottles of beer on the wall, 15 bottles of beer.
+Take one down and pass it around, 14 bottles of beer on the wall.
+
+14 bottles of beer on the wall, 14 bottles of beer.
+Take one down and pass it around, 13 bottles of beer on the wall.
+
+13 bottles of beer on the wall, 13 bottles of beer.
+Take one down and pass it around, 12 bottles of beer on the wall.
+
+12 bottles of beer on the wall, 12 bottles of beer.
+Take one down and pass it around, 11 bottles of beer on the wall.
+
+11 bottles of beer on the wall, 11 bottles of beer.
+Take one down and pass it around, 10 bottles of beer on the wall.
+
+10 bottles of beer on the wall, 10 bottles of beer.
+Take one down and pass it around, 9 bottles of beer on the wall.
+
+9 bottles of beer on the wall, 9 bottles of beer.
+Take one down and pass it around, 8 bottles of beer on the wall.
+
+8 bottles of beer on the wall, 8 bottles of beer.
+Take one down and pass it around, 7 bottles of beer on the wall.
+
+7 bottles of beer on the wall, 7 bottles of beer.
+Take one down and pass it around, 6 bottles of beer on the wall.
+
+6 bottles of beer on the wall, 6 bottles of beer.
+Take one down and pass it around, 5 bottles of beer on the wall.
+
+5 bottles of beer on the wall, 5 bottles of beer.
+Take one down and pass it around, 4 bottles of beer on the wall.
+
+4 bottles of beer on the wall, 4 bottles of beer.
+Take one down and pass it around, 3 bottles of beer on the wall.
+
+3 bottles of beer on the wall, 3 bottles of beer.
+Take one down and pass it around, 2 bottles of beer on the wall.
+
+2 bottles of beer on the wall, 2 bottles of beer.
+Take one down and pass it around, 1 bottle of beer on the wall.
+
+1 bottle of beer on the wall, 1 bottle of beer.
+Take it down and pass it around, no more bottles of beer on the wall.
+
+No more bottles of beer on the wall, no more bottles of beer.
+Go to the store and buy some more, 99 bottles of beer on the wall.
+```
+
+## For bonus points
+
+Did you get the tests passing and the code clean? If you want to, these
+are some additional things you could try:
+
+* Remove as much duplication as you possibly can.
+* Optimize for readability, even if it means introducing duplication.
+* If you've removed all the duplication, do you have a lot of
+  conditionals? Try replacing the conditionals with polymorphism, if it
+  applies in this language. How readable is it?
+
+Then please share your thoughts in a comment on the submission. Did this
+experiment make the code better? Worse? Did you learn anything from it?
+
+## Running tests
+
+Execute the tests with:
+
+```bash
+$ mix test
+```
+
+### 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:
+
+```elixir
+# @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.
+
+```elixir
+# ExUnit.configure exclude: :pending, trace: true
+```
+
+If you're stuck on something, it may help to look at some of
+the [available resources](https://exercism.io/tracks/elixir/resources)
+out there where answers might be found.
+
+## Source
+
+Learn to Program by Chris Pine [http://pine.fm/LearnToProgram/?Chapter=06](http://pine.fm/LearnToProgram/?Chapter=06)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.

elixir/beer-song/lib/beer_song.ex

@@ -0,0 +1,47 @@
+defmodule BeerSong do
+  @basic "~s bottle~s of beer on the wall, ~s bottle~s of beer.\n~s, ~s bottle~s of beer on the wall.~n"
+  @take "Take ~s down and pass it around"
+  @store "Go to the store and buy some more"
+
+  @doc """
+  Get a single verse of the beer song
+  """
+  @spec verse(integer) :: String.t()
+  def verse(number) do
+    :io_lib.format(@basic, get_args(number)) |> to_string()
+  end
+
+  @doc """
+  Get the entire beer song for a given range of numbers of bottles.
+  """
+  @spec lyrics(Range.t()) :: String.t()
+  def lyrics(), do: lyrics(99..0)
+
+  def lyrics(range) do
+    range |> Enum.map(&verse(&1)) |> Enum.join("\n")
+  end
+
+  defp get_args(number) do
+    cond do
+      number == 0 ->
+        ["No more", "s", "no more", "s", @store, "99", "s"]
+
+      number == 1 ->
+        ["1", "", "1", "", :io_lib.format(@take, ["it"]) |> to_string(), "no more", "s"]
+
+      number == 2 ->
+        ["2", "s", "2", "s", :io_lib.format(@take, ["one"]) |> to_string(), "1", ""]
+
+      true ->
+        [
+          "#{number}",
+          "s",
+          "#{number}",
+          "s",
+          :io_lib.format(@take, ["one"]) |> to_string(),
+          "#{number - 1}",
+          "s"
+        ]
+    end
+  end
+end

elixir/beer-song/mix.exs

@@ -0,0 +1,28 @@
+defmodule BeerSong.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :beer_song,
+      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

elixir/beer-song/test/beer_song_test.exs

@@ -0,0 +1,377 @@
+defmodule BeerSongTest do
+  use ExUnit.Case
+
+  describe "verse" do
+    # @tag :pending
+    test "first generic verse" do
+      assert BeerSong.verse(99) == """
+             99 bottles of beer on the wall, 99 bottles of beer.
+             Take one down and pass it around, 98 bottles of beer on the wall.
+             """
+    end
+
+    @tag :pending
+    test "last generic verse" do
+      assert BeerSong.verse(3) == """
+             3 bottles of beer on the wall, 3 bottles of beer.
+             Take one down and pass it around, 2 bottles of beer on the wall.
+             """
+    end
+
+    @tag :pending
+    test "verse with 2 bottles" do
+      assert BeerSong.verse(2) == """
+             2 bottles of beer on the wall, 2 bottles of beer.
+             Take one down and pass it around, 1 bottle of beer on the wall.
+             """
+    end
+
+    @tag :pending
+    test "verse with 1 bottle" do
+      assert BeerSong.verse(1) == """
+             1 bottle of beer on the wall, 1 bottle of beer.
+             Take it down and pass it around, no more bottles of beer on the wall.
+             """
+    end
+
+    @tag :pending
+    test "verse with 0 bottles" do
+      assert BeerSong.verse(0) == """
+             No more bottles of beer on the wall, no more bottles of beer.
+             Go to the store and buy some more, 99 bottles of beer on the wall.
+             """
+    end
+  end
+
+  describe "lyrics" do
+    @tag :pending
+    test "first two verses" do
+      assert BeerSong.lyrics(99..98) == """
+             99 bottles of beer on the wall, 99 bottles of beer.
+             Take one down and pass it around, 98 bottles of beer on the wall.
+
+             98 bottles of beer on the wall, 98 bottles of beer.
+             Take one down and pass it around, 97 bottles of beer on the wall.
+             """
+    end
+
+    @tag :pending
+    test "last three verses" do
+      assert BeerSong.lyrics(2..0) == """
+             2 bottles of beer on the wall, 2 bottles of beer.
+             Take one down and pass it around, 1 bottle of beer on the wall.
+
+             1 bottle of beer on the wall, 1 bottle of beer.
+             Take it down and pass it around, no more bottles of beer on the wall.
+
+             No more bottles of beer on the wall, no more bottles of beer.
+             Go to the store and buy some more, 99 bottles of beer on the wall.
+             """
+    end
+
+    @tag :pending
+    test "all verses" do
+      assert BeerSong.lyrics() == """
+             99 bottles of beer on the wall, 99 bottles of beer.
+             Take one down and pass it around, 98 bottles of beer on the wall.
+
+             98 bottles of beer on the wall, 98 bottles of beer.
+             Take one down and pass it around, 97 bottles of beer on the wall.
+
+             97 bottles of beer on the wall, 97 bottles of beer.
+             Take one down and pass it around, 96 bottles of beer on the wall.
+
+             96 bottles of beer on the wall, 96 bottles of beer.
+             Take one down and pass it around, 95 bottles of beer on the wall.
+
+             95 bottles of beer on the wall, 95 bottles of beer.
+             Take one down and pass it around, 94 bottles of beer on the wall.
+
+             94 bottles of beer on the wall, 94 bottles of beer.
+             Take one down and pass it around, 93 bottles of beer on the wall.
+
+             93 bottles of beer on the wall, 93 bottles of beer.
+             Take one down and pass it around, 92 bottles of beer on the wall.
+
+             92 bottles of beer on the wall, 92 bottles of beer.
+             Take one down and pass it around, 91 bottles of beer on the wall.
+
+             91 bottles of beer on the wall, 91 bottles of beer.
+             Take one down and pass it around, 90 bottles of beer on the wall.
+
+             90 bottles of beer on the wall, 90 bottles of beer.
+             Take one down and pass it around, 89 bottles of beer on the wall.
+
+             89 bottles of beer on the wall, 89 bottles of beer.
+             Take one down and pass it around, 88 bottles of beer on the wall.
+
+             88 bottles of beer on the wall, 88 bottles of beer.
+             Take one down and pass it around, 87 bottles of beer on the wall.
+
+             87 bottles of beer on the wall, 87 bottles of beer.
+             Take one down and pass it around, 86 bottles of beer on the wall.
+
+             86 bottles of beer on the wall, 86 bottles of beer.
+             Take one down and pass it around, 85 bottles of beer on the wall.
+
+             85 bottles of beer on the wall, 85 bottles of beer.
+             Take one down and pass it around, 84 bottles of beer on the wall.
+
+             84 bottles of beer on the wall, 84 bottles of beer.
+             Take one down and pass it around, 83 bottles of beer on the wall.
+
+             83 bottles of beer on the wall, 83 bottles of beer.
+             Take one down and pass it around, 82 bottles of beer on the wall.
+
+             82 bottles of beer on the wall, 82 bottles of beer.
+             Take one down and pass it around, 81 bottles of beer on the wall.
+
+             81 bottles of beer on the wall, 81 bottles of beer.
+             Take one down and pass it around, 80 bottles of beer on the wall.
+
+             80 bottles of beer on the wall, 80 bottles of beer.
+             Take one down and pass it around, 79 bottles of beer on the wall.
+
+             79 bottles of beer on the wall, 79 bottles of beer.
+             Take one down and pass it around, 78 bottles of beer on the wall.
+
+             78 bottles of beer on the wall, 78 bottles of beer.
+             Take one down and pass it around, 77 bottles of beer on the wall.
+
+             77 bottles of beer on the wall, 77 bottles of beer.
+             Take one down and pass it around, 76 bottles of beer on the wall.
+
+             76 bottles of beer on the wall, 76 bottles of beer.
+             Take one down and pass it around, 75 bottles of beer on the wall.
+
+             75 bottles of beer on the wall, 75 bottles of beer.
+             Take one down and pass it around, 74 bottles of beer on the wall.
+
+             74 bottles of beer on the wall, 74 bottles of beer.
+             Take one down and pass it around, 73 bottles of beer on the wall.
+
+             73 bottles of beer on the wall, 73 bottles of beer.
+             Take one down and pass it around, 72 bottles of beer on the wall.
+
+             72 bottles of beer on the wall, 72 bottles of beer.
+             Take one down and pass it around, 71 bottles of beer on the wall.
+
+             71 bottles of beer on the wall, 71 bottles of beer.
+             Take one down and pass it around, 70 bottles of beer on the wall.
+
+             70 bottles of beer on the wall, 70 bottles of beer.
+             Take one down and pass it around, 69 bottles of beer on the wall.
+
+             69 bottles of beer on the wall, 69 bottles of beer.
+             Take one down and pass it around, 68 bottles of beer on the wall.
+
+             68 bottles of beer on the wall, 68 bottles of beer.
+             Take one down and pass it around, 67 bottles of beer on the wall.
+
+             67 bottles of beer on the wall, 67 bottles of beer.
+             Take one down and pass it around, 66 bottles of beer on the wall.
+
+             66 bottles of beer on the wall, 66 bottles of beer.
+             Take one down and pass it around, 65 bottles of beer on the wall.
+
+             65 bottles of beer on the wall, 65 bottles of beer.
+             Take one down and pass it around, 64 bottles of beer on the wall.
+
+             64 bottles of beer on the wall, 64 bottles of beer.
+             Take one down and pass it around, 63 bottles of beer on the wall.
+
+             63 bottles of beer on the wall, 63 bottles of beer.
+             Take one down and pass it around, 62 bottles of beer on the wall.
+
+             62 bottles of beer on the wall, 62 bottles of beer.
+             Take one down and pass it around, 61 bottles of beer on the wall.
+
+             61 bottles of beer on the wall, 61 bottles of beer.
+             Take one down and pass it around, 60 bottles of beer on the wall.
+
+             60 bottles of beer on the wall, 60 bottles of beer.
+             Take one down and pass it around, 59 bottles of beer on the wall.
+
+             59 bottles of beer on the wall, 59 bottles of beer.
+             Take one down and pass it around, 58 bottles of beer on the wall.
+
+             58 bottles of beer on the wall, 58 bottles of beer.
+             Take one down and pass it around, 57 bottles of beer on the wall.
+
+             57 bottles of beer on the wall, 57 bottles of beer.
+             Take one down and pass it around, 56 bottles of beer on the wall.
+
+             56 bottles of beer on the wall, 56 bottles of beer.
+             Take one down and pass it around, 55 bottles of beer on the wall.
+
+             55 bottles of beer on the wall, 55 bottles of beer.
+             Take one down and pass it around, 54 bottles of beer on the wall.
+
+             54 bottles of beer on the wall, 54 bottles of beer.
+             Take one down and pass it around, 53 bottles of beer on the wall.
+
+             53 bottles of beer on the wall, 53 bottles of beer.
+             Take one down and pass it around, 52 bottles of beer on the wall.
+
+             52 bottles of beer on the wall, 52 bottles of beer.
+             Take one down and pass it around, 51 bottles of beer on the wall.
+
+             51 bottles of beer on the wall, 51 bottles of beer.
+             Take one down and pass it around, 50 bottles of beer on the wall.
+
+             50 bottles of beer on the wall, 50 bottles of beer.
+             Take one down and pass it around, 49 bottles of beer on the wall.
+
+             49 bottles of beer on the wall, 49 bottles of beer.
+             Take one down and pass it around, 48 bottles of beer on the wall.
+
+             48 bottles of beer on the wall, 48 bottles of beer.
+             Take one down and pass it around, 47 bottles of beer on the wall.
+
+             47 bottles of beer on the wall, 47 bottles of beer.
+             Take one down and pass it around, 46 bottles of beer on the wall.
+
+             46 bottles of beer on the wall, 46 bottles of beer.
+             Take one down and pass it around, 45 bottles of beer on the wall.
+
+             45 bottles of beer on the wall, 45 bottles of beer.
+             Take one down and pass it around, 44 bottles of beer on the wall.
+
+             44 bottles of beer on the wall, 44 bottles of beer.
+             Take one down and pass it around, 43 bottles of beer on the wall.
+
+             43 bottles of beer on the wall, 43 bottles of beer.
+             Take one down and pass it around, 42 bottles of beer on the wall.
+
+             42 bottles of beer on the wall, 42 bottles of beer.
+             Take one down and pass it around, 41 bottles of beer on the wall.
+
+             41 bottles of beer on the wall, 41 bottles of beer.
+             Take one down and pass it around, 40 bottles of beer on the wall.
+
+             40 bottles of beer on the wall, 40 bottles of beer.
+             Take one down and pass it around, 39 bottles of beer on the wall.
+
+             39 bottles of beer on the wall, 39 bottles of beer.
+             Take one down and pass it around, 38 bottles of beer on the wall.
+
+             38 bottles of beer on the wall, 38 bottles of beer.
+             Take one down and pass it around, 37 bottles of beer on the wall.
+
+             37 bottles of beer on the wall, 37 bottles of beer.
+             Take one down and pass it around, 36 bottles of beer on the wall.
+
+             36 bottles of beer on the wall, 36 bottles of beer.
+             Take one down and pass it around, 35 bottles of beer on the wall.
+
+             35 bottles of beer on the wall, 35 bottles of beer.
+             Take one down and pass it around, 34 bottles of beer on the wall.
+
+             34 bottles of beer on the wall, 34 bottles of beer.
+             Take one down and pass it around, 33 bottles of beer on the wall.
+
+             33 bottles of beer on the wall, 33 bottles of beer.
+             Take one down and pass it around, 32 bottles of beer on the wall.
+
+             32 bottles of beer on the wall, 32 bottles of beer.
+             Take one down and pass it around, 31 bottles of beer on the wall.
+
+             31 bottles of beer on the wall, 31 bottles of beer.
+             Take one down and pass it around, 30 bottles of beer on the wall.
+
+             30 bottles of beer on the wall, 30 bottles of beer.
+             Take one down and pass it around, 29 bottles of beer on the wall.
+
+             29 bottles of beer on the wall, 29 bottles of beer.
+             Take one down and pass it around, 28 bottles of beer on the wall.
+
+             28 bottles of beer on the wall, 28 bottles of beer.
+             Take one down and pass it around, 27 bottles of beer on the wall.
+
+             27 bottles of beer on the wall, 27 bottles of beer.
+             Take one down and pass it around, 26 bottles of beer on the wall.
+
+             26 bottles of beer on the wall, 26 bottles of beer.
+             Take one down and pass it around, 25 bottles of beer on the wall.
+
+             25 bottles of beer on the wall, 25 bottles of beer.
+             Take one down and pass it around, 24 bottles of beer on the wall.
+
+             24 bottles of beer on the wall, 24 bottles of beer.
+             Take one down and pass it around, 23 bottles of beer on the wall.
+
+             23 bottles of beer on the wall, 23 bottles of beer.
+             Take one down and pass it around, 22 bottles of beer on the wall.
+
+             22 bottles of beer on the wall, 22 bottles of beer.
+             Take one down and pass it around, 21 bottles of beer on the wall.
+
+             21 bottles of beer on the wall, 21 bottles of beer.
+             Take one down and pass it around, 20 bottles of beer on the wall.
+
+             20 bottles of beer on the wall, 20 bottles of beer.
+             Take one down and pass it around, 19 bottles of beer on the wall.
+
+             19 bottles of beer on the wall, 19 bottles of beer.
+             Take one down and pass it around, 18 bottles of beer on the wall.
+
+             18 bottles of beer on the wall, 18 bottles of beer.
+             Take one down and pass it around, 17 bottles of beer on the wall.
+
+             17 bottles of beer on the wall, 17 bottles of beer.
+             Take one down and pass it around, 16 bottles of beer on the wall.
+
+             16 bottles of beer on the wall, 16 bottles of beer.
+             Take one down and pass it around, 15 bottles of beer on the wall.
+
+             15 bottles of beer on the wall, 15 bottles of beer.
+             Take one down and pass it around, 14 bottles of beer on the wall.
+
+             14 bottles of beer on the wall, 14 bottles of beer.
+             Take one down and pass it around, 13 bottles of beer on the wall.
+
+             13 bottles of beer on the wall, 13 bottles of beer.
+             Take one down and pass it around, 12 bottles of beer on the wall.
+
+             12 bottles of beer on the wall, 12 bottles of beer.
+             Take one down and pass it around, 11 bottles of beer on the wall.
+
+             11 bottles of beer on the wall, 11 bottles of beer.
+             Take one down and pass it around, 10 bottles of beer on the wall.
+
+             10 bottles of beer on the wall, 10 bottles of beer.
+             Take one down and pass it around, 9 bottles of beer on the wall.
+
+             9 bottles of beer on the wall, 9 bottles of beer.
+             Take one down and pass it around, 8 bottles of beer on the wall.
+
+             8 bottles of beer on the wall, 8 bottles of beer.
+             Take one down and pass it around, 7 bottles of beer on the wall.
+
+             7 bottles of beer on the wall, 7 bottles of beer.
+             Take one down and pass it around, 6 bottles of beer on the wall.
+
+             6 bottles of beer on the wall, 6 bottles of beer.
+             Take one down and pass it around, 5 bottles of beer on the wall.
+
+             5 bottles of beer on the wall, 5 bottles of beer.
+             Take one down and pass it around, 4 bottles of beer on the wall.
+
+             4 bottles of beer on the wall, 4 bottles of beer.
+             Take one down and pass it around, 3 bottles of beer on the wall.
+
+             3 bottles of beer on the wall, 3 bottles of beer.
+             Take one down and pass it around, 2 bottles of beer on the wall.
+
+             2 bottles of beer on the wall, 2 bottles of beer.
+             Take one down and pass it around, 1 bottle of beer on the wall.
+
+             1 bottle of beer on the wall, 1 bottle of beer.
+             Take it down and pass it around, no more bottles of beer on the wall.
+
+             No more bottles of beer on the wall, no more bottles of beer.
+             Go to the store and buy some more, 99 bottles of beer on the wall.
+             """
+    end
+  end
+end

elixir/beer-song/test/test_helper.exs

@@ -0,0 +1,2 @@
+ExUnit.start()
+# ExUnit.configure(exclude: :pending, trace: true)