Class: ParallelTests::FineGrainTest::FileQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/parallel_tests/fine_grain_test/file_queue.rb

Constant Summary collapse

FILE_NAME = 
'.test.queue'.freeze
MARKER = 
'--POPULATE--'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(file_name = FILE_NAME) ⇒ FileQueue

Returns a new instance of FileQueue.



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# File 'lib/parallel_tests/fine_grain_test/file_queue.rb', line 9

def initialize(file_name = FILE_NAME)
  @file_name = file_name
end

Instance Method Details

#deq ⇒ Object 



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# File 'lib/parallel_tests/fine_grain_test/file_queue.rb', line 30

def deq
  lock do |file|
    lines = file.read.split(/\n/)
    return nil if lines.empty? || lines[0].chomp == MARKER
    rewrite(file, lines[1..-1])

    return TestCase.decode(lines[0].chomp)
  end
end

#enq_all(test_cases) ⇒ Object 



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# File 'lib/parallel_tests/fine_grain_test/file_queue.rb', line 19

def enq_all(test_cases)
  lock do |file|
    return if already_populated?(file)

    test_cases = yield(test_cases) if block_given?

    lines = test_cases.map { |test_case| TestCase.encode(test_case) }
    rewrite(file, lines)
  end
end

#reset ⇒ Object 



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# File 'lib/parallel_tests/fine_grain_test/file_queue.rb', line 13

def reset
  lock do |file|
    rewrite(file, [ MARKER ])
  end
end

#size ⇒ Object 



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# File 'lib/parallel_tests/fine_grain_test/file_queue.rb', line 40

def size
  lock do |file|
    lines = file.read.split(/\n/)
    if lines.empty? || lines[0].chomp == MARKER
      return 0
    else
      return lines.size
    end
  end
end