Class: DiffTest::Integrations::RailsJs::BodyProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/diff_test/integrations/rails_js/body_processor.rb

Constant Summary collapse

HEAD_TAG_REGEX = 
/<head( [^<]+)?>/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(body, options) ⇒ BodyProcessor 



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# File 'lib/diff_test/integrations/rails_js/body_processor.rb', line 9

def initialize(body, options)
  @body = body
  @options = options
end

Instance Attribute Details

#content_length ⇒ Object (readonly)

Returns the value of attribute content_length.



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# File 'lib/diff_test/integrations/rails_js/body_processor.rb', line 7

def content_length
  @content_length
end

#new_body ⇒ Object (readonly)

Returns the value of attribute new_body.



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# File 'lib/diff_test/integrations/rails_js/body_processor.rb', line 7

def new_body
  @new_body
end

Instance Method Details

#process!(env) ⇒ Object 



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# File 'lib/diff_test/integrations/rails_js/body_processor.rb', line 14

def process!(env)
  @env = env
  @body.close if @body.respond_to?(:close)

  @new_body = []
  @body.each { |line| @new_body << line.to_s }

  @content_length = 0
  @script_added = false

  @new_body = @new_body.map do |line|
    if !@script_added && line['<head']
      line = line.gsub(HEAD_TAG_REGEX) { |match| %(#{match}#{script}) }

      @script_added = true
    end

    @content_length += line.bytesize
    line
  end
end

#script ⇒ Object 



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# File 'lib/diff_test/integrations/rails_js/body_processor.rb', line 36

def script
  "    <script>\n      let timeout = null\n      var owner = globalThis || window\n      owner.diffTestTrackedJsFiles = owner.diffTestTrackedJsFiles || [];\n      owner.diffTestTrackJsFile = function(file_path) {\n        owner.diffTestTrackedJsFiles.push(file_path);\n        if(!timeout) {\n          timeout = setTimeout(flushTrackedJsFiles, 0);\n        }\n      }\n\n      owner.diffTestTrackJsFileAuto = owner.diffTestTrackJsFile;\n\n      function flushTrackedJsFiles() {\n        timeout = null\n        const file_paths = owner.diffTestTrackedJsFiles;\n        owner.diffTestTrackedJsFiles = [];\n\n        const path = \"/__diff_test_js_beacon\";\n        const payload = JSON.stringify({ test_id: \#{DiffTest::TestExecution.current.id.to_json}, file_paths: file_paths });\n\n        if (owner.navigator && owner.navigator.sendBeacon) {\n          // Use sendBeacon in capable browsers/environments\n          window.navigator.sendBeacon(path, payload);\n        } else {\n          // Fallback: Use fetch from Service Worker or other Worker\n          fetch(path, {\n            method: 'POST',\n            headers: { 'Content-Type': 'application/json' },\n            body: payload\n          }).catch((err) => {\n            // Handle error logging or silent fail\n            console.error('diff_test_js_beacon_failure', err);\n          });\n        }\n      }\n    </script>\n  HTML\nend\n"