Class: TestRunner::TestEvaluator

Inherits:
Object
  • Object
show all
Includes:
RSpec::Matchers
Defined in:
lib/test-runner/test_evaluator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(test, scripts, **opts) ⇒ TestEvaluator

Returns a new instance of TestEvaluator.

Parameters:

Options Hash (**opts):

  • :default_timeout (Integer)
  • :destructive (Boolean)
  • :recreate_disks (Boolean)
  • :state_dir (String)
  • :sock_dir (String) 


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# File 'lib/test-runner/test_evaluator.rb', line 20

def initialize(test, scripts, **opts)
  scripts.each do |s|
    next if s.test == test

    raise ArgumentError, "script #{s.name} is not of test #{test.path}"
  end

  @test = test
  @scripts = scripts
  @config = TestConfig.build(test)
  @opts = opts
  @machines = {}
  @default_timeout = opts.fetch(:default_timeout)
  @used_container_ids = []

  @config['machines'].each do |name, cfg|
    var = :"@#{name}"

    m = OsVm::Machine.new(
      name,
      OsVm::MachineConfig.new(cfg),
      opts[:state_dir],
      opts[:sock_dir],
      default_timeout: opts[:default_timeout],
      hash_base: test.path
    )

    m.destroy_disks if opts[:recreate_disks]

    instance_variable_set(var, m)

    define_singleton_method(name) do
      instance_variable_get(var)
    end

    machines[name] = m
  end
end

Instance Attribute Details

#machines ⇒ Hash<String, OsVm::Machine> (readonly)

Returns:

  • (Hash<String, OsVm::Machine>) 


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# File 'lib/test-runner/test_evaluator.rb', line 10

def machines
  @machines
end

Instance Method Details

#after(type, &block) ⇒ Object

Code block executed after suite, context or example

Parameters:

  • type (:suite, :context, :example) 


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# File 'lib/test-runner/test_evaluator.rb', line 179

def after(type, &block)
  if type == :suite
    @after << block
    return
  end

  raise 'Called outside of an example group, use from #describe block' if @group_stack.empty?

  @group_stack.last.add_after(type, block)
end

#before(type, &block) ⇒ Object

Code block executed before suite, context or example

Parameters:

  • type (:suite, :context, :example) 


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# File 'lib/test-runner/test_evaluator.rb', line 166

def before(type, &block)
  if type == :suite
    @before << block
    return
  end

  raise 'Called outside of an example group, use from #describe block' if @group_stack.empty?

  @group_stack.last.add_before(type, block)
end

#breakpoint ⇒ Object

Invoke interactive shell from within a test



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# File 'lib/test-runner/test_evaluator.rb', line 127

def breakpoint
  binding.pry # rubocop:disable Lint/Debugger
end

#configure_examples {|| ... } ⇒ Object

Configure default settings for example groups

Yield Parameters:



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# File 'lib/test-runner/test_evaluator.rb', line 133

def configure_examples
  yield(@example_config)
end

#describe(obj, order: nil) ⇒ Object Also known as: context

Create an example group

Example groups can be nested. Groups are evaluated in random order. Groups contain examples which are defined within the yielded block using #it.

Parameters:

  • obj (#to_s)
  • order (nil, :defined, :rand, Random, Integer) (defaults to: nil) —

    order in which examples and subgroups are evaluated



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# File 'lib/test-runner/test_evaluator.rb', line 145

def describe(obj, order: nil, &)
  grp = ExampleGroup.new(obj, parent: @group_stack.last, order:, config: @example_config, &)

  if @group_stack.any?
    @group_stack.last.add_group(grp)
  else
    @example_groups << grp
  end

  @group_stack << grp

  grp.load

  @group_stack = @group_stack[0..-2]
  nil
end

#do_run ⇒ Object (protected) 



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# File 'lib/test-runner/test_evaluator.rb', line 362

def do_run
  yield

  machines.each_value do |m|
    m.stop if m.running? && m.can_execute?
  end
ensure
  machines.each_value do |m|
    m.kill
    m.destroy if @opts[:destructive]
    m.finalize
    m.cleanup
  end
end

#example(message, pending: false, skip: false, &block) ⇒ Object Also known as: it

Create a test example

#it must be called from within a #describe block. Examples within a group are evaluated in random order.

Parameters:

  • message (String)
  • pending (Boolean) (defaults to: false)
  • skip (Boolean) (defaults to: false) 


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# File 'lib/test-runner/test_evaluator.rb', line 198

def example(message, pending: false, skip: false, &block)
  raise 'Called outside of an example group, use from #describe block' if @group_stack.empty?

  grp = @group_stack.last
  grp.add_example(Example.new(grp, message, pending:, skip: skip || block.nil?, &block))
  nil
end

#get_container_id(base = 'testct') ⇒ String

Generate container id that is unique to the test run

Returns:

  • (String) 


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# File 'lib/test-runner/test_evaluator.rb', line 232

def get_container_id(base = 'testct')
  10.times do
    new_id = "#{base}-#{SecureRandom.hex(2)}"

    if @used_container_ids.include?(new_id)
      sleep(0.05)
      next
    end

    @used_container_ids << new_id
    return new_id
  end

  raise 'Unable to generate unique container id'
end

#get_example_count(groups: nil) ⇒ Object (protected) 



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# File 'lib/test-runner/test_evaluator.rb', line 347

def get_example_count(groups: nil)
  cnt = 0

  (groups || @example_groups).each do |grp|
    cnt += grp.examples.count(&:evaluate?)
    cnt += get_example_count(groups: grp.groups)
  end

  cnt
end

#interactive ⇒ Object

Run interactive shell



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# File 'lib/test-runner/test_evaluator.rb', line 115

def interactive
  do_run do
    binding.pry # rubocop:disable Lint/Debugger
  end
end

#log(msg) ⇒ Object (protected) 



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# File 'lib/test-runner/test_evaluator.rb', line 358

def log(msg)
  warn "[#{Time.now}] #{msg}"
end

#pending(message = '', skip: false, &block) ⇒ Object

Create a pending example or mark the currently evaluated example as pending

Parameters:

  • message (String) (defaults to: '')
  • skip (Boolean) (defaults to: false) 


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# File 'lib/test-runner/test_evaluator.rb', line 211

def pending(message = '', skip: false, &block)
  if block || @current_example.nil?
    it(message, pending: true, skip:, &block)
  else
    @current_example.send(:set_pending)
  end
end

#run {|one| ... } ⇒ Hash<String, Boolean>

Run the test scripts

Yield Parameters:

  • one (Hash) —

    result per test script

Returns:

  • (Hash<String, Boolean>) —

    script name => result



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# File 'lib/test-runner/test_evaluator.rb', line 62

def run
  ret = {}

  do_run do
    @scripts.each do |script|
      success = false
      t1 = Time.now

      begin
        log "Running script #{script.name}"

        test_script(script.name) do |progress|
          if progress[:type] == :example
            yield({
              type: :example,
              script: script.name,
              example: progress[:result].example.full_message,
              progress: progress[:progress],
              total: progress[:total],
              success: progress[:result].success?,
              pending: progress[:result].pending?,
              skip: progress[:result].skip?,
              elapsed_time: progress[:result].elapsed_time
            })
          end
        end

        t2 = Time.now
        log "Script #{script.name} finished in #{(t2 - t1).round(2)}s"
      rescue Exception => e # rubocop:disable Lint/RescueException
        t2 = Time.now
        log "Exception occurred while running script #{script.name} in #{(t2 - t1).round(2)}s"
        log e.full_message
      else
        success = true
      end

      result = {
        type: :script,
        script: script.name,
        success:,
        elapsed_time: t2 - t1
      }

      ret[script.name] = result
      yield(result) if block_given?
    end
  end

  ret
end

#run_examples ⇒ Object (protected) 



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# File 'lib/test-runner/test_evaluator.rb', line 290

def run_examples
  example_count = get_example_count
  i = 1

  log 'Evaluating examples'

  @before.each(&:call)

  results = @example_groups.shuffle.map do |grp|
    grp.evaluate do |type, example_or_result|
      if type == :before
        log "[#{i}/#{example_count}] Evaluating '#{example_or_result.full_message}'"
        @current_example = example_or_result
      else
        result = example_or_result

        status =
          if result.success?
            if result.pending?
              'pending'
            elsif result.skip?
              'skipped'
            else
              'succeeded'
            end
          elsif result.pending?
            'unexpectedly succeeded'
          else
            'failed'
          end

        log "[#{i}/#{example_count}] '#{result.title}' #{status} in #{result.elapsed_time.round(2)}s"

        yield({ type: :example, progress: i, total: example_count, result: result })
        @current_example = nil

        i += 1
      end
    end
  end.flatten

  @after.each(&:call)

  failed = results.select(&:failure?)
  return if failed.empty?

  warn "\n#{failed.count} examples failed:"

  failed.each do |result|
    warn result.title
    warn result.error
    warn "\n\n"
  end

  raise 'One or more examples failed'
end

#skip(message = '', &block) ⇒ Object

Create a skipped example or mark the currently evaluated example as pending

Parameters:

  • message (String) (defaults to: '') 


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# File 'lib/test-runner/test_evaluator.rb', line 221

def skip(message = '', &block)
  if block || @current_example.nil?
    it(message, skip: true, &block)
  else
    @current_example.send(:set_skip)
    throw :skip
  end
end

#start_all ⇒ Object

Start all machines



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# File 'lib/test-runner/test_evaluator.rb', line 122

def start_all
  machines.each(&:start)
end

#test_script(name) ⇒ Object (protected) 



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# File 'lib/test-runner/test_evaluator.rb', line 276

def test_script(name, &)
  @example_config = ExampleConfiguration.new
  @before = []
  @after = []
  @example_groups = []
  @group_stack = []

  binding.eval(@config['testScripts'][name]['script']) # rubocop:disable Security/Eval

  return if @example_groups.empty?

  run_examples(&)
end

#wait_for_block(name:, timeout: @default_timeout) ⇒ any

Wait for block to succeed

Yield until the code block returns a truthy value or a timeout is reached.

Parameters:

  • name (String) —

    block name for error reporting

  • timeout (Integer) (defaults to: @default_timeout)

Returns:

  • (any) —

    yielded value

Raises:

  • (OsVm::TimeoutError) 


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# File 'lib/test-runner/test_evaluator.rb', line 256

def wait_for_block(name:, timeout: @default_timeout)
  t1 = Time.now
  cur_timeout = timeout

  loop do
    ret = yield
    return ret if ret

    cur_timeout = timeout - (Time.now - t1)

    if cur_timeout <= 0
      raise OsVm::TimeoutError, "Timeout occurred while waiting for #{name}"
    end

    sleep(1)
  end
end