From 9a8ad3a23c693e3d2dac10793f201857667b96eb Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Sat, 13 Apr 2019 21:12:25 -0500
Subject: [PATCH] as_dhall for Symbol

---
 lib/dhall/as_dhall.rb | 10 ++++++++++
 test/test_as_dhall.rb | 13 ++++++++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/lib/dhall/as_dhall.rb b/lib/dhall/as_dhall.rb
index d3607fe..60fd4ff 100644
--- a/lib/dhall/as_dhall.rb
+++ b/lib/dhall/as_dhall.rb
@@ -39,6 +39,16 @@ module Dhall
 			end
 		end
 
+		refine ::Symbol do
+			def as_dhall
+				Dhall::Union.new(
+					tag:          to_s,
+					value:        nil,
+					alternatives: Dhall::UnionType.new(alternatives: {})
+				)
+			end
+		end
+
 		refine ::Integer do
 			def as_dhall
 				if negative?
diff --git a/test/test_as_dhall.rb b/test/test_as_dhall.rb
index f1ce339..15e4ee2 100644
--- a/test/test_as_dhall.rb
+++ b/test/test_as_dhall.rb
@@ -2,7 +2,7 @@
 
 require "minitest/autorun"
 
-require "dhall/as_dhall"
+require "dhall"
 
 class TestAsDhall < Minitest::Test
 	using Dhall::AsDhall
@@ -24,6 +24,17 @@ class TestAsDhall < Minitest::Test
 		end
 	end
 
+	def test_symbol
+		assert_equal(
+			Dhall::Union.new(
+				tag:          "hai",
+				value:        nil,
+				alternatives: Dhall::UnionType.new(alternatives: {})
+			),
+			:hai.as_dhall
+		)
+	end
+
 	def test_natural
 		assert_equal Dhall::Natural.new(value: 1), 1.as_dhall
 	end
-- 
2.45.2