Class: AffectedTests::Engine::Coverage

Inherits:
Object
  • Object
show all
Defined in:
lib/affected_tests/engine/coverage.rb

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Coverage

Returns a new instance of Coverage.



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# File 'lib/affected_tests/engine/coverage.rb', line 6

def initialize(config)
  @config = config

  ::Coverage.start(lines: true)
end

Instance Method Details

#add(caller, callee) ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 51

def add(caller, callee)
  cache[callee] ||= Set.new
  cache[callee].add(caller)
end

#cache ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 56

def cache
  Thread.current[:cache] ||= {}
end

#checkpoint(target_test_path) ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 25

def checkpoint(target_test_path)
  result = ::Coverage.result(stop: false, clear: true)
  actual_used = result.select do |_file_path, coverage|
    coverage[:lines].any? { |line| line && line > 0 }
  end
  import(target_test_path, actual_used.keys)
end

#dump ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 60

def dump
  ::Coverage.result(stop: true, clear: true)

  cache.transform_values(&:to_a)
end

#import(target_test_path, used_file_paths) ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 33

def import(target_test_path, used_file_paths)
  all_related_paths = used_file_paths.select do |file_path|
    @config.target_path?(file_path)
  end

  formatted_target_test_path = @config.format_path(target_test_path)

  all_related_paths.each do |path|
    formatted_path = @config.format_path(path)

    next if formatted_path.start_with?(@config.test_dir_path)

    if formatted_path != formatted_target_test_path
      add(formatted_target_test_path, formatted_path)
    end
  end
end

#start_trace ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 12

def start_trace
  # Clear buffer in coverage
  ::Coverage.result(stop: false, clear: true)
end

#stop_trace ⇒ Object 



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# File 'lib/affected_tests/engine/coverage.rb', line 17

def stop_trace
  # Do nothing
end

#tracing? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/affected_tests/engine/coverage.rb', line 21

def tracing?
  ::Coverage.running?
end