Run mix format (exercism#391)

Closes exercism#387.

.formatter.exs

@@ -0,0 +1,3 @@
+[
+  inputs: ["mix.exs", "{exercises}/**/*.{ex,exs}"]
+]

exercises/accumulate/accumulate_test.exs

@@ -2,30 +2,30 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("accumulate.exs", __DIR__)
 end
 
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 defmodule AccumulateTest do
   use ExUnit.Case
 
   test "accumulate empty list" do
-    assert Accumulate.accumulate([], fn(n) -> n * n end) == []
+    assert Accumulate.accumulate([], fn n -> n * n end) == []
   end
 
   @tag :pending
   test "accumulate square numbers" do
-    assert Accumulate.accumulate([1, 2, 3], fn(n) -> n * n end) == [1, 4, 9]
+    assert Accumulate.accumulate([1, 2, 3], fn n -> n * n end) == [1, 4, 9]
   end
 
   @tag :pending
   test "accumulate upcased strings" do
-    fun = fn(w) -> String.upcase(w) end
+    fun = fn w -> String.upcase(w) end
     assert Accumulate.accumulate(["hello", "world"], fun) == ["HELLO", "WORLD"]
   end
 
   @tag :pending
   test "accumulate reversed strings" do
-    fun = fn(w) -> String.reverse(w) end
+    fun = fn w -> String.reverse(w) end
     words = ~w(the quick brown fox etc)
     expected = ["eht", "kciuq", "nworb", "xof", "cte"]
     assert Accumulate.accumulate(words, fun) == expected
@@ -34,8 +34,8 @@ defmodule AccumulateTest do
   @tag :pending
   test "nested accumulate" do
     chars = ~w(a b c)
-    nums  = ~w(1 2 3)
-    fun = fn(c) -> Accumulate.accumulate(nums, &(c <> &1)) end
+    nums = ~w(1 2 3)
+    fun = fn c -> Accumulate.accumulate(nums, &(c <> &1)) end
     expected = [["a1", "a2", "a3"], ["b1", "b2", "b3"], ["c1", "c2", "c3"]]
     assert Accumulate.accumulate(chars, fun) == expected
   end

exercises/acronym/acronym_test.exs

@@ -2,8 +2,8 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("acronym.exs", __DIR__)
 end
 
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 defmodule AcronymTest do
   use ExUnit.Case

exercises/acronym/example.exs

@@ -1,11 +1,10 @@
 defmodule Acronym do
-
   @spec abbreviate(String.t()) :: String.t()
   def abbreviate(string) do
     Regex.scan(~r/[A-Z]+[a-z]*|[a-z]+/, string)
-    |> List.flatten
-    |> Enum.map(fn(x) -> String.first(x) end)
+    |> List.flatten()
+    |> Enum.map(fn x -> String.first(x) end)
     |> Enum.join("")
-    |> String.upcase
+    |> String.upcase()
   end
 end

exercises/all-your-base/all-your-base-test.exs

@@ -2,8 +2,8 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("all-your-base.exs", __DIR__)
 end
 
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 defmodule AllYourBaseTest do
   use ExUnit.Case

exercises/all-your-base/example.exs

@@ -1,5 +1,4 @@
 defmodule AllYourBase do
-
   @doc """
   Given a number in base a, represented as a sequence of digits, converts it to base b,
   or returns nil if either of the bases are less than 2
@@ -8,27 +7,35 @@ defmodule AllYourBase do
   @spec convert(list, integer, integer) :: list
   def convert(digits, base_a, base_b) do
     cond do
-      base_a > 1 and base_b > 1 and digits !=[] ->
+      base_a > 1 and base_b > 1 and digits != [] ->
         do_convert(digits, base_a, base_b)
+
       true ->
         nil
     end
   end
 
   defp do_convert(digits, base_a, base_b) do
     num = convert_to_num(digits, base_a, 0)
+
     case num do
-      nil -> nil
-      0 -> [0]
-      num -> convert_to_digits(num, base_b, [])
-      |> Enum.reverse
+      nil ->
+        nil
+
+      0 ->
+        [0]
+
+      num ->
+        convert_to_digits(num, base_b, [])
+        |> Enum.reverse()
     end
   end
 
   defp convert_to_num([head | tail], base_a, accumulator) do
     cond do
       head < base_a and head >= 0 ->
-         convert_to_num(tail, base_a, accumulator * base_a + head)
+        convert_to_num(tail, base_a, accumulator * base_a + head)
+
       true ->
         nil
     end

exercises/allergies/allergies.exs

@@ -2,16 +2,14 @@ defmodule Allergies do
   @doc """
   List the allergies for which the corresponding flag bit is true.
   """
-  @spec list(non_neg_integer) :: [String.t]
+  @spec list(non_neg_integer) :: [String.t()]
   def list(flags) do
-
   end
 
   @doc """
   Returns whether the corresponding flag bit in 'flags' is set for the item.
   """
-  @spec allergic_to?(non_neg_integer, String.t) :: boolean
+  @spec allergic_to?(non_neg_integer, String.t()) :: boolean
   def allergic_to?(flags, item) do
-
   end
 end

exercises/allergies/allergies_test.exs

@@ -2,9 +2,8 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("allergies.exs", __DIR__)
 end
 
-
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 defmodule AllergiesTest do
   use ExUnit.Case
@@ -41,12 +40,16 @@ defmodule AllergiesTest do
 
   @tag :pending
   test "allergic_to_lots_of_stuff" do
-    Allergies.list(248) |> assert_is_a_set_containing(~w[strawberries tomatoes chocolate pollen cats])
+    Allergies.list(248)
+    |> assert_is_a_set_containing(~w[strawberries tomatoes chocolate pollen cats])
   end
 
   @tag :pending
   test "allergic_to_everything" do
-    Allergies.list(255) |> assert_is_a_set_containing(~w[eggs peanuts shellfish strawberries tomatoes chocolate pollen cats])
+    Allergies.list(255)
+    |> assert_is_a_set_containing(
+      ~w[eggs peanuts shellfish strawberries tomatoes chocolate pollen cats]
+    )
   end
 
   @tag :pending
@@ -68,16 +71,19 @@ defmodule AllergiesTest do
 
   @tag :pending
   test "ignore_non_allergen_score_parts" do
-    Allergies.list(509) |> assert_is_a_set_containing(~w[eggs shellfish strawberries tomatoes chocolate pollen cats])
+    Allergies.list(509)
+    |> assert_is_a_set_containing(~w[eggs shellfish strawberries tomatoes chocolate pollen cats])
   end
 
   defp assert_is_a_set_containing(list, to_contain) do
-    set = Enum.into(list, MapSet.new)
-    same_contents = to_contain
-      |> Enum.into(MapSet.new)
+    set = Enum.into(list, MapSet.new())
+
+    same_contents =
+      to_contain
+      |> Enum.into(MapSet.new())
       |> MapSet.equal?(set)
+
     assert same_contents,
-           "Expected a set with: #{inspect to_contain} got #{inspect set |> MapSet.to_list}"
+           "Expected a set with: #{inspect(to_contain)} got #{inspect(set |> MapSet.to_list())}"
   end
-
 end

exercises/anagram/anagram.exs

@@ -2,8 +2,7 @@ defmodule Anagram do
   @doc """
   Returns all candidates that are anagrams of, but not equal to, 'base'.
   """
-  @spec match(String.t, [String.t]) :: [String.t]
+  @spec match(String.t(), [String.t()]) :: [String.t()]
   def match(base, candidates) do
-
   end
 end

exercises/anagram/anagram_test.exs

@@ -2,75 +2,75 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("anagram.exs", __DIR__)
 end
 
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 defmodule AnagramTest do
   use ExUnit.Case
 
   # @tag :pending
   test "no matches" do
-    matches = Anagram.match "diaper", ["hello", "world", "zombies", "pants"]
+    matches = Anagram.match("diaper", ["hello", "world", "zombies", "pants"])
     assert matches == []
   end
 
   @tag :pending
   test "detect simple anagram" do
-    matches = Anagram.match "ant", ["tan", "stand", "at"]
+    matches = Anagram.match("ant", ["tan", "stand", "at"])
     assert matches == ["tan"]
   end
 
   @tag :pending
   test "detect multiple anagrams" do
-    matches = Anagram.match "master", ["stream", "pigeon", "maters"]
+    matches = Anagram.match("master", ["stream", "pigeon", "maters"])
     assert matches == ["stream", "maters"]
   end
 
   @tag :pending
   test "do not detect anagram subsets" do
-    matches = Anagram.match "good", ~w(dog goody)
+    matches = Anagram.match("good", ~w(dog goody))
     assert matches == []
   end
 
   @tag :pending
   test "detect anagram" do
-    matches = Anagram.match "listen", ~w(enlists google inlets banana)
+    matches = Anagram.match("listen", ~w(enlists google inlets banana))
     assert matches == ["inlets"]
   end
 
   @tag :pending
   test "multiple anagrams" do
-    matches = Anagram.match "allergy", ~w(gallery ballerina regally clergy largely leading)
+    matches = Anagram.match("allergy", ~w(gallery ballerina regally clergy largely leading))
     assert matches == ["gallery", "regally", "largely"]
   end
 
   @tag :pending
   test "anagrams must use all letters exactly once" do
-    matches = Anagram.match "patter", ["tapper"]
+    matches = Anagram.match("patter", ["tapper"])
     assert matches == []
   end
 
   @tag :pending
   test "detect anagrams with case-insensitive subject" do
-    matches = Anagram.match "Orchestra", ~w(cashregister carthorse radishes)
+    matches = Anagram.match("Orchestra", ~w(cashregister carthorse radishes))
     assert matches == ["carthorse"]
   end
 
   @tag :pending
   test "detect anagrams with case-insensitive candidate" do
-    matches = Anagram.match "orchestra", ~w(cashregister Carthorse radishes)
+    matches = Anagram.match("orchestra", ~w(cashregister Carthorse radishes))
     assert matches == ["Carthorse"]
   end
 
   @tag :pending
   test "anagrams must not be the source word" do
-    matches = Anagram.match "corn", ["corn", "dark", "Corn", "rank", "CORN", "cron", "park"]
+    matches = Anagram.match("corn", ["corn", "dark", "Corn", "rank", "CORN", "cron", "park"])
     assert matches == ["cron"]
   end
 
   @tag :pending
   test "do not detect words based on checksum" do
-    matches = Anagram.match "mass", ["last"]
+    matches = Anagram.match("mass", ["last"])
     assert matches == []
   end
 end

exercises/anagram/example.exs

@@ -4,10 +4,11 @@ defmodule Anagram do
 
   Comparison is case insensitive.
   """
-  @spec match(String.t, [String.t]) :: [String.t]
+  @spec match(String.t(), [String.t()]) :: [String.t()]
   def match(target, words) do
     lc_target = String.downcase(target)
     sorted_target = sort(lc_target)
+
     Enum.filter(words, fn word ->
       lc_word = String.downcase(word)
       # `and` is shortcutting

exercises/atbash-cipher/atbash_cipher.exs

@@ -7,11 +7,11 @@ defmodule Atbash do
   iex> Atbash.encode("completely insecure")
   "xlnko vgvob rmhvx fiv"
   """
-  @spec encode(String.t) :: String.t
+  @spec encode(String.t()) :: String.t()
   def encode(plaintext) do
   end
 
-  @spec decode(String.t) :: String.t
+  @spec decode(String.t()) :: String.t()
   def decode(cipher) do
   end
 end

exercises/atbash-cipher/atbash_cipher_test.exs

@@ -2,8 +2,8 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("atbash_cipher.exs", __DIR__)
 end
 
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 defmodule AtbashTest do
   use ExUnit.Case

exercises/bank-account/bank_account_test.exs

@@ -2,8 +2,8 @@ if !System.get_env("EXERCISM_TEST_EXAMPLES") do
   Code.load_file("account.exs", __DIR__)
 end
 
-ExUnit.start
-ExUnit.configure exclude: :pending, trace: true
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)
 
 # The BankAccount module should support four calls:
 #
@@ -26,8 +26,8 @@ defmodule BankAccountTest do
   use ExUnit.Case
 
   setup do
-    account = BankAccount.open_bank
-    { :ok, account: account }
+    account = BankAccount.open_bank()
+    {:ok, account: account}
   end
 
   # @tag :pending
@@ -59,18 +59,23 @@ defmodule BankAccountTest do
   end
 
   @tag :pending
-  test "incrementing balance from another process then checking it from test process", %{account: account} do
+  test "incrementing balance from another process then checking it from test process", %{
+    account: account
+  } do
     assert BankAccount.balance(account) == 0
     this = self()
+
     spawn(fn ->
       BankAccount.update(account, 20)
       send(this, :continue)
     end)
+
     receive do
       :continue -> :ok
     after
       1000 -> flunk("Timeout")
     end
+
     assert BankAccount.balance(account) == 20
   end
 end