Merge pull request #130 from iamvery/number-koans

Number koans

lib/koans/04_numbers.ex

@@ -39,6 +39,22 @@ defmodule Numbers do
     assert Integer.parse("2A", 16) == {___, ""}
   end
 
+  koan "The remaining unparsable part is also returned" do
+    assert Integer.parse("5 years") == {5, ___}
+  end
+
+  koan "What if you parse a floating point value as an integer?" do
+    assert Integer.parse("1.2") == {___, ___}
+  end
+
+  koan "Just want to parse to a float" do
+    assert Float.parse("34.5") == {___, ""}
+  end
+
+  koan "Hmm, I want to parse this but it has some strings" do
+    assert Float.parse("1.5 million dollars") == {___, " million dollars"}
+  end
+
   koan "I don't want this decimal point, let's round up" do
     assert Float.ceil(34.25) == ___
   end
@@ -55,14 +71,6 @@ defmodule Numbers do
     assert Float.floor(12.345, 2) == ___
   end
 
-  koan "Just want to parse to a float" do
-    assert Float.parse("34.5") == {___, ""}
-  end
-
-  koan "Hmm, I want to parse this but it has some strings" do
-    assert Float.parse("1 million dollars") == {___, " million dollars"}
-  end
-
   koan "Round the number up or down for me" do
     assert Float.round(5.5) == ___
     assert Float.round(5.4) == ___

test/koans/numbers_koans_test.exs

@@ -11,12 +11,14 @@ defmodule NumbersTests do
       '7',
       "1234",
       42,
+      " years",
+      {:multiple, [1, ".2"]},
+      34.5,
+      1.5,
       35.0,
       34.3,
       99.0,
       12.34,
-      34.5,
-      1.0,
       {:multiple, [6.0, 5.0, 8.9, -5.567]},
       {:multiple, [1, 10]},
       {:multiple, [true, true, false]},