Format empty html-tags on one line if possible (#42)

CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 ## [Unreleased]
 
+## [0.9.3] - 2023-06-30
+
+- Print empty html-tags on one line if possible
+
 ## [0.9.2] - 2023-06-30
 
 - Handle whitespace in HTML-strings using ERB-tags

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
  remote: .
  specs:
- w_syntax_tree-erb (0.9.2)
+ w_syntax_tree-erb (0.9.3)
  prettier_print (>= 1.2.0)
  syntax_tree (>= 6.1.1)
 

lib/syntax_tree/erb/format.rb

@@ -49,7 +49,12 @@ def visit_block(node)
  end
 
  def visit_html(node)
- visit_block(node)
+ # Make sure to group the tags together if there is no child nodes.
+ if node.elements.size == 0
+ q.group { visit_block(node) }
+ else
+ visit_block(node)
+ end
  end
 
  def visit_erb_block(node)

lib/syntax_tree/erb/version.rb

@@ -2,6 +2,6 @@
 
 module SyntaxTree
  module ERB
- VERSION = "0.9.2"
+ VERSION = "0.9.3"
  end
 end

test/fixture/erb_syntax_formatted.html.erb

@@ -42,5 +42,4 @@
  assign_c ||= "c"
 %>
 
-<div class="card mb-2 <%= condition ? "pb-3" : "pb-0" %> mt-<%= 5 * 5 %>">
-</div>
+<div class="card mb-2 <%= condition ? "pb-3" : "pb-0" %> mt-<%= 5 * 5 %>"></div>

test/html_test.rb

@@ -89,5 +89,13 @@ def test_html_attribute_without_quotes
  formatted = ERB.format(source)
  assert_equal("<div class=\"card\">\n Hello World\n</div>\n", formatted)
  end
+
+ def test_html_attribute_without_content
+ source = "<component-without-content>\n</component-without-content>\n"
+ expected = "<component-without-content></component-without-content>\n"
+
+ formatted = ERB.format(source)
+ assert_equal(expected, formatted)
+ end
  end
 end