Switch to assert-style tests (#260)

Gemfile

@@ -4,7 +4,7 @@ source "https://rubygems.org"
 
 gemspec
 
-gem "quickdraw", git: "https://github.com/joeldrapper/quickdraw.git"
+gem "quickdraw", git: "https://github.com/joeldrapper/quickdraw.git", branch: "assert-style"
 gem "benchmark-ips"
 
 group :development do

lib/literal/array.rb

@@ -276,7 +276,7 @@ def insert(index, *value)
 	end
 
 	def inspect
-		@__value__.inspect
+		"Literal::Array(#{@__type__.inspect})#{@__value__.inspect}"
 	end
 
 	def intersect?(other)
@@ -497,6 +497,7 @@ def select(...)
 
 	def select!(...)
 		@__value__.select!(...)
+		self
 	end
 
 	def shift(...)
@@ -535,7 +536,9 @@ def to_a
 
 	alias_method :to_ary, :to_a
 
-	alias_method :to_s, :inspect
+	def to_s
+		@__value__.to_s
+	end
 
 	def uniq
 		__with__(@__value__.uniq)

lib/literal/failure.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class Literal::Failure < Literal::Result
+	def initialize(error)
+		@error = error
+	end
+end

lib/literal/result.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class Listeral::Result
+end

lib/literal/success.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class Literal::Success < Literal::Result
+	def initialize(value)
+		@value = value
+	end
+end

lib/literal/tuple.rb

@@ -57,4 +57,8 @@ def initialize(values, types)
 	end
 
 	attr_reader :__values__, :__types__
+
+	def ==(other)
+		Literal::Tuple === other && @__values__ == other.__values__
+	end
 end