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Make assert_select_rjs code more readable, make use of unused constan…

…ts and use more simple Regexps.

[#540 state:resolved]

Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>
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1 parent 6450d6c commit 11eb29f60ab79caf22f7ca715500e32d9a1b03a2 @miloops miloops committed with jeremy Aug 7, 2008
@@ -396,54 +396,31 @@ def count_description(min, max) #:nodoc:
# # The same, but shorter.
# assert_select "ol>li", 4
def assert_select_rjs(*args, &block)
- rjs_type = nil
- arg = args.shift
+ rjs_type = args.first.is_a?(Symbol) ? args.shift : nil
+ id = args.first.is_a?(String) ? args.shift : nil
# If the first argument is a symbol, it's the type of RJS statement we're looking
# for (update, replace, insertion, etc). Otherwise, we're looking for just about
# any RJS statement.
- if arg.is_a?(Symbol)
- rjs_type = arg
-
+ if rjs_type
if rjs_type == :insert
- arg = args.shift
- position = arg
- insertion = "insert_#{arg}".to_sym
- raise ArgumentError, "Unknown RJS insertion type #{arg}" unless RJS_STATEMENTS[insertion]
+ position = args.shift
+ insertion = "insert_#{position}".to_sym
+ raise ArgumentError, "Unknown RJS insertion type #{position}" unless RJS_STATEMENTS[insertion]
statement = "(#{RJS_STATEMENTS[insertion]})"
else
raise ArgumentError, "Unknown RJS statement type #{rjs_type}" unless RJS_STATEMENTS[rjs_type]
statement = "(#{RJS_STATEMENTS[rjs_type]})"
end
- arg = args.shift
else
statement = "#{RJS_STATEMENTS[:any]}"
end
- position ||= Regexp.new(RJS_INSERTIONS.join('|'))
# Next argument we're looking for is the element identifier. If missing, we pick
- # any element.
- if arg.is_a?(String)
- id = Regexp.quote(arg)
- arg = args.shift
- else
- id = "[^\"]*"
- end
-
- pattern =
- case rjs_type
- when :chained_replace, :chained_replace_html
- Regexp.new("\\$\\(\"#{id}\"\\)#{statement}\\(#{RJS_PATTERN_HTML}\\)", Regexp::MULTILINE)
- when :remove, :show, :hide, :toggle
- Regexp.new("#{statement}\\(\"#{id}\"\\)")
- when :replace, :replace_html
- Regexp.new("#{statement}\\(\"#{id}\", #{RJS_PATTERN_HTML}\\)")
- when :insert, :insert_html
- Regexp.new("Element.insert\\(\\\"#{id}\\\", \\{ #{position}: #{RJS_PATTERN_HTML} \\}\\);")
- else
- Regexp.union(Regexp.new("#{statement}\\(\"#{id}\", #{RJS_PATTERN_HTML}\\)"),
- Regexp.new("Element.insert\\(\\\"#{id}\\\", \\{ #{position}: #{RJS_PATTERN_HTML} \\}\\);"))
- end
+ # any element, otherwise we replace it in the statement.
+ pattern = Regexp.new(
+ id ? statement.gsub(RJS_ANY_ID, "\"#{id}\"") : statement
+ )
# Duplicate the body since the next step involves destroying it.
matches = nil
@@ -588,26 +565,23 @@ def assert_select_email(&block)
protected
unless const_defined?(:RJS_STATEMENTS)
- RJS_STATEMENTS = {
- :replace => /Element\.replace/,
- :replace_html => /Element\.update/,
- :chained_replace => /\.replace/,
- :chained_replace_html => /\.update/,
- :remove => /Element\.remove/,
- :show => /Element\.show/,
- :hide => /Element\.hide/,
- :toggle => /Element\.toggle/
+ RJS_PATTERN_HTML = "\"((\\\\\"|[^\"])*)\""
+ RJS_ANY_ID = "\"([^\"])*\""
+ RJS_STATEMENTS = {
+ :chained_replace => "\\$\\(#{RJS_ANY_ID}\\)\\.replace\\(#{RJS_PATTERN_HTML}\\)",
+ :chained_replace_html => "\\$\\(#{RJS_ANY_ID}\\)\\.update\\(#{RJS_PATTERN_HTML}\\)",
+ :replace_html => "Element\\.update\\(#{RJS_ANY_ID}, #{RJS_PATTERN_HTML}\\)",
+ :replace => "Element\\.replace\\(#{RJS_ANY_ID}, #{RJS_PATTERN_HTML}\\)"
}
- RJS_STATEMENTS[:any] = Regexp.new("(#{RJS_STATEMENTS.values.join('|')})")
- RJS_PATTERN_HTML = /"((\\"|[^"])*)"/
- RJS_INSERTIONS = [:top, :bottom, :before, :after]
+ [:remove, :show, :hide, :toggle].each do |action|
+ RJS_STATEMENTS[action] = "Element\\.#{action}\\(#{RJS_ANY_ID}\\)"
+ end
+ RJS_INSERTIONS = ["top", "bottom", "before", "after"]
RJS_INSERTIONS.each do |insertion|
- RJS_STATEMENTS["insert_#{insertion}".to_sym] = /Element.insert\(\"([^\"]*)\", \{ #{insertion.to_s.downcase}: #{RJS_PATTERN_HTML} \}\);/
+ RJS_STATEMENTS["insert_#{insertion}".to_sym] = "Element.insert\\(#{RJS_ANY_ID}, \\{ #{insertion}: #{RJS_PATTERN_HTML} \\}\\)"
end
- RJS_STATEMENTS[:insert_html] = Regexp.new(RJS_INSERTIONS.collect do |insertion|
- /Element.insert\(\"([^\"]*)\", \{ #{insertion.to_s.downcase}: #{RJS_PATTERN_HTML} \}\);/
- end.join('|'))
- RJS_PATTERN_EVERYTHING = Regexp.new("#{RJS_STATEMENTS[:any]}\\(\"([^\"]*)\", #{RJS_PATTERN_HTML}\\)", Regexp::MULTILINE)
+ RJS_STATEMENTS[:insert_html] = "Element.insert\\(#{RJS_ANY_ID}, \\{ (#{RJS_INSERTIONS.join('|')}): #{RJS_PATTERN_HTML} \\}\\)"
+ RJS_STATEMENTS[:any] = Regexp.new("(#{RJS_STATEMENTS.values.join('|')})")
RJS_PATTERN_UNICODE_ESCAPED_CHAR = /\\u([0-9a-zA-Z]{4})/
end
@@ -621,8 +595,8 @@ def response_from_page_or_rjs()
root = HTML::Node.new(nil)
while true
- next if body.sub!(RJS_PATTERN_EVERYTHING) do |match|
- html = unescape_rjs($3)
+ next if body.sub!(RJS_STATEMENTS[:any]) do |match|
+ html = unescape_rjs(match)
matches = HTML::Document.new(html).root.children.select { |n| n.tag? }
root.children.concat matches
""
@@ -599,6 +599,11 @@ def test_assert_select_rjs_for_positioned_insert
end
end
+ def test_assert_select_rjs_raise_errors
+ assert_raises(ArgumentError) { assert_select_rjs(:destroy) }
+ assert_raises(ArgumentError) { assert_select_rjs(:insert, :left) }
+ end
+
# Simple selection from a single result.
def test_nested_assert_select_rjs_with_single_result
render_rjs do |page|

3 comments on commit 11eb29f

Contributor

dchelimsky commented on 11eb29f Sep 6, 2008

The following test fails as of this commit:

  def test_assert_select_rjs_for_positioned_insert_should_fail_when_mixing_arguments
    render_rjs do |page|
      page.insert_html :top, "test1", "<div id=\"1\">foo</div>"
      page.insert_html :bottom, "test2", "<div id=\"2\">foo</div>"
    end
    assert_raises {assert_select_rjs :insert, :top, "test2"}
  end

See http://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/982 for more info.

fwiw, if we’re talking about making code more readable, I don’t understand why people ever have ternary expressions that can return nil.

args.shift if args.first.is_a?(Symbol)

seems better for readability than

args.first.is_a?(Symbol) ? args.shift : nil

granted, you’d have to do it like

foo = (bar if baz)

for the example here, which is maybe a little weird. I think I was thinking of situations where I did this behavior when assigning ivars, which of course relies on their defaulting to nil anyway.

so probably nevermind my ill conceived comment.

sheepish

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