Class: Puppeteer::JSCoverage

Inherits:
Object
  • Object
show all
Includes:
Coverage::UtilFunctions
Defined in:
lib/puppeteer/js_coverage.rb

Defined Under Namespace

Classes: Item, ItemWithRawScriptCoverage

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ JSCoverage

Returns a new instance of JSCoverage.

Parameters:



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# File 'lib/puppeteer/js_coverage.rb', line 24

def initialize(client)
  @client = client
  @enabled = false
  @script_urls = {}
  @script_sources = {}
end

Instance Method Details

#start(reset_on_navigation: nil, report_anonymous_scripts: nil, include_raw_script_coverage: nil, use_block_coverage: nil) ⇒ Object 



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# File 'lib/puppeteer/js_coverage.rb', line 31

def start(
      reset_on_navigation: nil,
      report_anonymous_scripts: nil,
      include_raw_script_coverage: nil,
      use_block_coverage: nil)
  raise 'JSCoverage is already enabled' if @enabled

  @reset_on_navigation =
    if [true, false].include?(reset_on_navigation)
      reset_on_navigation
    else
      true
    end
  @use_block_coverage =
    if [true, false].include?(use_block_coverage)
      use_block_coverage
    else
      true
    end
  @report_anonymous_scripts = report_anonymous_scripts || false
  @include_raw_script_coverage = include_raw_script_coverage || false
  @enabled = true
  @script_urls.clear
  @script_sources.clear
  @event_listeners = []
  @event_listeners << @client.add_event_listener('Debugger.scriptParsed') do |event|
    future { on_script_parsed(event) }
  end
  @event_listeners << @client.add_event_listener('Runtime.executionContextsCleared') do
    on_execution_contexts_cleared
  end
  await_all(
    @client.async_send_message('Profiler.enable'),
    @client.async_send_message('Profiler.startPreciseCoverage',
      callCount: @include_raw_script_coverage,
      detailed: @use_block_coverage,
    ),
    @client.async_send_message('Debugger.enable'),
    @client.async_send_message('Debugger.setSkipAllPauses', skip: true),
  )
end

#stop ⇒ Object 



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# File 'lib/puppeteer/js_coverage.rb', line 98

def stop
  raise 'JSCoverage is not enabled' unless @enabled
  @enabled = false

  results = await_all(
    @client.async_send_message('Profiler.takePreciseCoverage'),
    @client.async_send_message('Profiler.stopPreciseCoverage'),
    @client.async_send_message('Profiler.disable'),
    @client.async_send_message('Debugger.disable'),
  )
  @client.remove_event_listener(*@event_listeners)

  coverage = []
  profile_response = results.first
  profile_response['result'].each do |entry|
    url = @script_urls[entry['scriptId']]

    if @report_anonymous_scripts
      url ||= "debugger://VM#{entry['scriptId']}"
    end

    text = @script_sources[entry['scriptId']]
    next if !text || !url

    flatten_ranges = []
    entry['functions'].each do |func|
      func['ranges'].each do |range|
        flatten_ranges << range
      end
    end

    if @include_raw_script_coverage
      coverage << ItemWithRawScriptCoverage.new(
        url: url,
        ranges: convert_to_disjoint_ranges(flatten_ranges),
        text: text,
        raw_script_coverage: entry,
      )
    else
      coverage << Item.new(
        url: url,
        ranges: convert_to_disjoint_ranges(flatten_ranges),
        text: text,
      )
    end
  end

  coverage
end