LuaCov Reference

# Module `luacov.reporter`

Report module, will transform statistics file into a report.

## Functions

report ([reporter_class]) | Runs the report generator.

## Class ReporterBase

ReporterBase:config () | Returns configuration table.
ReporterBase:max_hits () | Returns maximum number of hits per line in all coverage data.
ReporterBase:write (...) | Writes strings to report file.
ReporterBase:files () | Returns array of filenames to be reported.
ReporterBase:stats (filename) | Returns coverage data for a file.
ReporterBase:on_start () | Stub method called before reporting.
ReporterBase:on_new_file (filename) | Stub method called before processing a file.
ReporterBase:on_file_error (filename, error_type, message) | Stub method called if a file couldn't be processed due to an error.
ReporterBase:on_empty_line (filename, lineno, line) | Stub method called for each empty source line and other lines that can't be hit.
ReporterBase:on_mis_line (filename, lineno, line) | Stub method called for each missed source line.
ReporterBase:on_hit_line (filename, lineno, line, hits) | Stub method called for each hit source line.
ReporterBase:on_end_file (filename, hits, miss) | Stub method called after a file has been processed.
ReporterBase:on_end () | Stub method called after reporting.

## Functions

report ([reporter_class])
  Runs the report generator. To load a config, use luacov.runner.load_config first.

  ### Parameters:

  - reporter_class custom reporter class. Will be instantiated using 'new' method with configuration (see luacov.defaults) as the argument. It should return nil + error if something went wrong. After acquiring a reporter object its 'run' and 'close' methods will be called. The easiest way to implement a custom reporter class is to extend ReporterBase. (optional)

## Class ReporterBase

Basic reporter class stub. Implements 'new', 'run' and 'close' methods required by report. Provides some helper methods and stubs to be overridden by child classes.

### Usage:

    local MyReporter = setmetatable({}, ReporterBase)
    MyReporter.__index = MyReporter
    function MyReporter:on_hit_line(...)
       self:write(("File %s: hit line %s %d times"):format(...))
    end

ReporterBase:config ()
  Returns configuration table.

  ### See also:

  luacov.defaults
ReporterBase:max_hits ()
  Returns maximum number of hits per line in all coverage data.
ReporterBase:write (...)
  Writes strings to report file.

  ### Parameters:

  - ... strings.
ReporterBase:files ()
  Returns array of filenames to be reported.
ReporterBase:stats (filename)
  Returns coverage data for a file.

  ### Parameters:

  - filename name of the file.

  ### See also:

  luacov.stats.load
ReporterBase:on_start ()
  Stub method called before reporting.
ReporterBase:on_new_file (filename)
  Stub method called before processing a file.

  ### Parameters:

  - filename name of the file.
ReporterBase:on_file_error (filename, error_type, message)
  Stub method called if a file couldn't be processed due to an error.

  ### Parameters:

  - filename name of the file.
  - error_type "open", "read" or "load".
  - message error message.
ReporterBase:on_empty_line (filename, lineno, line)
  Stub method called for each empty source line and other lines that can't be hit.

  ### Parameters:

  - filename name of the file.
  - lineno line number.
  - line the line itself as a string.
ReporterBase:on_mis_line (filename, lineno, line)
  Stub method called for each missed source line.

  ### Parameters:

  - filename name of the file.
  - lineno line number.
  - line the line itself as a string.
ReporterBase:on_hit_line (filename, lineno, line, hits)
  Stub method called for each hit source line.

  ### Parameters:

  - filename name of the file.
  - lineno line number.
  - line the line itself as a string.
  - hits number of times the line was hit. Should be positive.
ReporterBase:on_end_file (filename, hits, miss)
  Stub method called after a file has been processed.

  ### Parameters:

  - filename name of the file.
  - hits total number of hit lines in the file.
  - miss total number of missed lines in the file.
ReporterBase:on_end ()
  Stub method called after reporting.

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