Change behavior of Enum's to_s and to_sym methods (#326)

This changes the behavior of `to_s` and `to_sym` on Enums.

`to_s` returns a humanized version of the demodularized class name, eg:
"Red," "Slate gray," "Spring green"

`to_sym` converts the demodularized class name to a symbol, eg: `:Red`,
`:SlateGray`, `:SPRING_GREEN`

Note that this was deemed a minor breaking change.

---------

Co-authored-by: Joel Drapper <[email protected]>
Co-authored-by: Alexey Zapparov <[email protected]>

Author: 3 people

lib/literal/enum.rb

@@ -199,7 +199,14 @@ def name
 	end
 
 	alias_method :inspect, :name
-	alias_method :to_s, :name
+
+	def to_sym
+		self.class.names[self]
+	end
+
+	def to_s
+		to_sym.to_s
+	end
 
 	def deconstruct
 		[@value]

test/enum.test.rb

@@ -130,6 +130,20 @@ class SymbolTypedEnum < Literal::Enum(Symbol)
 	]
 end
 
+test ".to_s" do
+	assert_equal Color::Red.to_s, "Red"
+	assert_equal Color::SPRING_GREEN.to_s, "SPRING_GREEN"
+	assert_equal Switch::On.to_s, "On"
+	assert_equal SymbolTypedEnum::A.to_s, "A"
+end
+
+test ".to_sym" do
+	assert_equal Color::Red.to_sym, :Red
+	assert_equal Color::SPRING_GREEN.to_sym, :SPRING_GREEN
+	assert_equal Switch::On.to_sym, :On
+	assert_equal SymbolTypedEnum::A.to_sym, :A
+end
+
 test "#succ" do
 	assert_equal Color::Red.succ, Color::Green
 	assert_equal Color::Green.succ, Color::Blue