Handles self-closing new lines

lib/syntax_tree/erb/nodes.rb

@@ -164,7 +164,7 @@ def new_line
 
  def without_new_line
  self.class.new(
- **deconstruct_keys([]).merge(closing: closing.without_new_line)
+ **deconstruct_keys([]).merge(closing: closing&.without_new_line)
  )
  end
 
@@ -253,6 +253,15 @@ def deconstruct_keys(keys)
  end
  end
 
+ def without_new_line
+ self.class.new(
+ **deconstruct_keys([]).merge(
+ opening: closing.nil? ? opening.without_new_line : opening,
+ closing: closing&.without_new_line
+ )
+ )
+ end
+
  # The HTML-closing tag is responsible for new lines after the node.
  def new_line
  closing.nil? ? opening.new_line : closing&.new_line

test/html_test.rb

@@ -180,5 +180,12 @@ def test_breakable_on_char_data_white_space
 
  assert_formatting(source, expected)
  end
+
+ def test_self_closing_group
+ source = "<link />\n<link />\n<meta />"
+ expected = "<link />\n<link />\n<meta />\n"
+
+ assert_formatting(source, expected)
+ end
  end
 end

test/test_helper.rb

@@ -12,18 +12,10 @@ class TestCase < Minitest::Test
  def assert_formatting(source, expected)
  formatted = SyntaxTree::ERB.format(source)
 
- if (expected != formatted)
- binding.irb if debug
- end
-
  assert_equal(formatted, expected, "Failed first")
 
  formatted_twice = SyntaxTree::ERB.format(formatted)
 
- if (expected != formatted_twice)
- binding.irb if debug
- end
-
  assert_equal(formatted_twice, expected, "Failed second")
 
  # Check that pretty_print works