Class: TTNT::TestSelector

Inherits:
Object
  • Object
show all
Defined in:
lib/ttnt/test_selector.rb

Overview

Select tests using git information and TestToCodeMapping.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(repo, target_sha, test_files) ⇒ TestSelector

Returns a new instance of TestSelector.

Parameters:

  • repo (Rugged::Reposiotry) —

    repository of the project

  • target_sha (String) —

    sha of the target object (nil means to target current working tree)

  • test_files (#include?) —

    candidate test files



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# File 'lib/ttnt/test_selector.rb', line 16

def initialize(repo, target_sha, test_files)
  @repo = repo
  @metadata = MetaData.new(repo, target_sha)
  @target_obj = @repo.lookup(target_sha) if target_sha

  # Base should be the commit `ttnt:anchor` has run on.
  # NOT the one test-to-code mapping was commited to.
  @base_obj = find_anchored_commit

  @test_files = test_files
end

Instance Attribute Details

#tests ⇒ Object (readonly)

Returns the value of attribute tests.



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# File 'lib/ttnt/test_selector.rb', line 10

def tests
  @tests
end

Instance Method Details

#find_anchored_commit ⇒ Object (private)

Find the commit ‘rake ttnt:test:anchor` has been run on.



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# File 'lib/ttnt/test_selector.rb', line 85

def find_anchored_commit
  @repo.lookup(@metadata['anchored_commit'])
end

#mapping ⇒ Object (private) 



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# File 'lib/ttnt/test_selector.rb', line 49

def mapping
  sha = @target_obj ? @target_obj.oid : @repo.head.target_id
  @mapping ||= TTNT::TestToCodeMapping.new(@repo, sha)
end

#select_tests! ⇒ Set

Select tests using differences in anchored commit and target commit (or current working tree) and TTNT::TestToCodeMapping.

Returns:

  • (Set) —

    a set of tests that might be affected by changes in base_sha…target_sha



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# File 'lib/ttnt/test_selector.rb', line 32

def select_tests!
  # TODO: if test-to-code-mapping is not found (ttnt-anchor has not been run)
  @tests ||= Set.new
  diff = @target_obj ? @base_obj.diff(@target_obj) : @base_obj.diff_workdir
  diff.each_patch do |patch|
    file = patch.delta.old_file[:path]
    if test_file?(file)
      @tests << file
    else
      select_tests_from_patch(patch)
    end
  end
  @tests.delete(nil)
end

#select_tests_from_patch(patch) ⇒ Set (private)

Select tests which are affected by the change of given patch.

Parameters:

  • patch (Rugged::Patch)

Returns:

  • (Set) —

    set of selected tests



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# File 'lib/ttnt/test_selector.rb', line 58

def select_tests_from_patch(patch)
  target_lines = Set.new
  file = patch.delta.old_file[:path]
  prev_line = nil
  patch.each_hunk do |hunk|
    hunk.each_line do |line|
      case line.line_origin
      when :addition
        if prev_line && !prev_line.addition?
          target_lines << prev_line.old_lineno
        elsif prev_line.nil?
          target_lines << hunk.old_start
        end
      when :deletion
        target_lines << line.old_lineno
      end

      prev_line = line
    end
  end

  target_lines.each do |line|
    @tests += mapping.get_tests(file: file, lineno: line)
  end
end

#test_file?(filename) ⇒ Boolean (private)

Check if given file is a test file.

Parameters:

  • filename (String)

Returns:

  • (Boolean) 


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# File 'lib/ttnt/test_selector.rb', line 92

def test_file?(filename)
  @test_files.include?(filename)
end