Class: Mutant::Selector::ContextMap Private

Inherits:
Mutant::Selector show all
Defined in:
lib/mutant/selector/context_map.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Test selector backed by a per test coverage recording

Selects the tests that executed the subject's own source lines, which finds the tests that cover a subject regardless of where they live or how they are named. Subjects the recording says nothing about fall back to the expression selector: code that only runs while the suite loads (a constant body, a class level DSL call) executes under no test, and reporting its mutations alive without running a single test would be a lie.

Instance Method Summary collapse

Instance Method Details

#call(subject) ⇒ Enumerable<Test>

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Tests for subject, likeliest killer first

Parameters:

Returns:

  • (Enumerable<Test>) 


26
27
28
29
30
31
32
33
34
35
36
 
# File 'lib/mutant/selector/context_map.rb', line 26

def call(subject)
  reach = context_map.reach(path: subject.source_path, lines: subject.source_lines)

  covering = reach.flat_map do |location, lines|
    index.fetch(location, EMPTY_ARRAY).map { |test| [test, lines, context_map.footprint(location)] }
  end

  return fallback.call(subject) if covering.empty?

  order(covering, subject)
end

#name ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Name of the strategy this selector implements

Returns:

  • (String) 


19
 
# File 'lib/mutant/selector/context_map.rb', line 19

def name = 'context_map'

#unmatched? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Whether the recording names no test this suite runs

A recording taken from another project root, or from a suite that has since been renamed away, covers everything and matches nothing. Left unsaid it looks exactly like a suite in which no test covers anything.

Returns:

  • (Boolean) 


45
46
47
 
# File 'lib/mutant/selector/context_map.rb', line 45

def unmatched?
  index.each_key.none? { |location| context_map.context_ids.include?(location) }
end