Improve punctuation in PatternMatching koans

lib/koans/08_pattern_matching.ex

@@ -1,84 +1,71 @@
 defmodule PatternMatching do
   use Koans
 
-  koan "one matches one" do
+  koan "One matches one" do
     assert match?(1, :__)
   end
 
-  koan "a pattern can change" do
+  koan "A pattern can change" do
     a = 1
     assert a = :__
   end
 
-  # TODO not sure about this koan?
+  koan "A pattern can also be strict" do
-  koan "a pattern can also be strict" do
     a = 1
     assert ^a = :__
   end
 
-  koan "patterns can be used to pull things apart" do
+  koan "Patterns can be used to pull things apart" do
-    [head | _tail] = [1,2,3,4]
+    [head | tail] = [1,2,3,4]
 
     assert head == :__
-  end
-
-  koan "...whichever side you actually need" do
-    [_head | tail] = [1,2,3,4]
-
     assert tail == :__
   end
 
-
+  koan "And then put them back together" do
-  koan "and then put them back together" do
     head = 1
     tail = [2,3,4]
 
     assert :__ == [head | tail]
   end
 
-  koan "Some values can be irrelevant" do
+  koan "Some values can be ignored" do
     [_first, _second, third, _fourth] = [1,2,3,4]
 
     assert third == :__
   end
 
-  koan "strings come apart just a easily" do
+  koan "Strings come apart just a easily" do
     "Shopping list: " <> items = "Shopping list: eggs, milk"
 
     assert items == :__
   end
 
-  koan "patterns show what you really care about" do
+  koan "Patterns show what you really care about" do
     %{make: make} = %{type: "car", year: 2016, make: "Honda", color: "black"}
 
     assert make == :__
   end
 
-  koan "the pattern can make assertions about what it expects" do
+  koan "The pattern can make assertions about what it expects" do
-    assert match?([1, _, _], :__)
+    assert match?([1, _second, _third], :__)
   end
 
   def make_noise(%{type: "cat"}), do: "Meow"
   def make_noise(%{type: "dog"}), do: "Woof"
   def make_noise(_anything), do: "Eh?"
 
-  koan "functions can declare what kind of arguments they accept" do
+  koan "Functions can declare what kind of arguments they accept" do
     dog = %{type: "dog", legs: 4, age: 9, color: "brown"}
+    cat = %{type: "cat", legs: 4, age: 3, color: "grey"}
+    snake = %{type: "snake", legs: 0, age: 20, color: "black"}
 
     assert make_noise(dog) == :__
-  end
-
-  koan "...and for cats..." do
-    cat = %{type: "cat", legs: 4, age: 3, color: "grey"}
     assert make_noise(cat) == :__
-  end
-
-  koan "...and for snakes..." do
-    snake = %{type: "snake", legs: 0, age: 20, color: "black"}
     assert make_noise(snake) == :__
   end
 
-  koan "errors are shaped differently than sucessful results" do
+  koan "Errors are shaped differently than sucessful results" do
     result = case Map.fetch(%{}, :obviously_not_a_key) do
       :error -> "not present"
       _ -> flunk("I should not happen")

test/koans_harness_test.exs

@@ -124,16 +124,13 @@ defmodule KoansHarnessTest do
       1,
       2,
       1,
-      1,
+      {:multiple, [1, [2,3,4]]},
-      [2,3,4],
       [1,2,3,4],
       3,
       "eggs, milk",
       "Honda",
       [1,2,3],
-      "Woof",
+      {:multiple, ["Woof", "Meow", "Eh?",]},
-      "Meow",
-      "Eh?",
       "not present"
     ]