add jq language (#59)

add jq language

Author: glennj

lib/languages/jq.txt

@@ -0,0 +1,2 @@
+!e stop_at_first_loc
+#\p

test/languages/jq_test.rb

@@ -0,0 +1,56 @@
+require "test_helper"
+
+module SnippetExtractor
+  module Languages
+    class JqTest < Minitest::Test
+      def test_no_comments
+        code = <<~CODE
+          {a: "foo", b: "bar"}
+        CODE
+
+        expected = <<~CODE
+          {a: "foo", b: "bar"}
+        CODE
+
+        assert_equal expected, ExtractSnippet.(code, :ruby)
+      end
+
+      def test_full_example
+        code = <<~CODE
+          # This is a file
+          # With some comments in it
+
+          # And a blank line ⬆️
+
+          # And then eventually the code
+          def afunc: 42 ;
+
+          afunc
+        CODE
+
+        expected = <<~CODE
+          def afunc: 42 ;
+
+          afunc
+        CODE
+
+        assert_equal expected, ExtractSnippet.(code, :jq)
+      end
+
+      def test_stop_at_first_loc
+        code = <<~CODE
+          # a comment should be removed
+          {a: "foo", b: "bar"}
+          # a comment should remain
+        CODE
+
+        expected = <<~CODE
+          {a: "foo", b: "bar"}
+          # a comment should remain
+        CODE
+
+        assert_equal expected, ExtractSnippet.(code, :ruby)
+      end
+    end
+  end
+end