whisper.cpp/bindings/ruby/test/test_segment.rb

require_relative "helper"

class TestSegment < TestBase
  def test_iteration
    whisper.each_segment do |segment|
      assert_instance_of Whisper::Segment, segment
    end
  end

  def test_enumerator
    enum = whisper.each_segment
    assert_instance_of Enumerator, enum
    enum.to_a.each_with_index do |segment, index|
      assert_instance_of Whisper::Segment, segment
      assert_kind_of Integer, index
    end
  end

  def test_start_time
    i = 0
    whisper.each_segment do |segment|
      assert_equal 0, segment.start_time if i == 0
      i += 1
    end
  end

  def test_end_time
    i = 0
    whisper.each_segment do |segment|
      assert_equal whisper.full_get_segment_t1(i) * 10, segment.end_time
      i += 1
    end
  end

  def test_no_speech_prob
    no_speech_prob = nil
    whisper.each_segment do |segment|
      no_speech_prob = segment.no_speech_prob
    end
    assert no_speech_prob > 0.0
  end

  def test_on_new_segment
    params = Whisper::Params.new
    seg = nil
    index = 0
    params.on_new_segment do |segment|
      assert_instance_of Whisper::Segment, segment
      if index == 0
        seg = segment
        assert_equal 0, segment.start_time
        assert_match(/ask not what your country can do for you, ask what you can do for your country/, segment.text)
      end
      index += 1
    end
    whisper.transcribe(AUDIO, params)
    assert_equal 0, seg.start_time
    assert_match(/ask not what your country can do for you, ask what you can do for your country/, seg.text)
  end

  def test_on_new_segment_twice
    params = Whisper::Params.new
    seg = nil
    params.on_new_segment do |segment|
      seg = segment
      return
    end
    params.on_new_segment do |segment|
      assert_same seg, segment
      return
    end
    whisper.transcribe(AUDIO, params)
  end

  def test_transcription_after_segment_retrieved
    params = Whisper::Params.new
    segment = whisper.each_segment.first
    assert_match(/ask not what your country can do for you, ask what you can do for your country/, segment.text)

    whisper.transcribe(AUDIO, Whisper::Params.new(offset: 5000))
    assert_not_match(/ask not what your country can do for you, ask what you can do for your country/, segment.text)
    assert_match(/what you can do for your country/i, segment.text)
  end

  def test_pattern_matching
    segment = whisper.each_segment.first
    segment => {start_time:, end_time:, text:, no_speech_prob:, speaker_turn_next:}

    assert_equal segment.start_time, start_time
    assert_equal segment.end_time, end_time
    assert_equal segment.text, text
    assert_equal segment.no_speech_prob, no_speech_prob
    assert_equal segment.speaker_turn_next?, speaker_turn_next
  end

  def test_pattern_matching_partial
    segment = whisper.each_segment.first
    segment => {start_time:, end_time:, text:}

    assert_equal segment.start_time, start_time
    assert_equal segment.end_time, end_time
    assert_equal segment.text, text
  end

  def test_deconstruct_keys
    segment = whisper.each_segment.first
    expected = {
      start_time: segment.start_time,
      end_time: segment.end_time,
      text: segment.text,
      no_speech_prob: segment.no_speech_prob,
      speaker_turn_next: segment.speaker_turn_next?
    }
    assert_equal expected, segment.deconstruct_keys([:start_time, :end_time, :text, :no_speech_prob, :speaker_turn_next])
  end

  def test_deconstruct_keys_non_existent
    omit "Undefined behavior"

    segment = whisper.each_segment.first

    assert_equal({}, segment.deconstruct_keys([:non_existent]))
  end

  def test_deconstruct_keys_too_many_keys
    omit "Undefined behavior"

    segment = whisper.each_segment.first

    assert_equal({}, segment.deconstruct_keys([:start_time, :end_time, :text, :no_speech_prob, :speaker_turn_next, :extra_key]))
  end

  def test_deconstruct_keys_includes_non_existent_keys_not_too_many
    omit "Undefined behavior"

    segment = whisper.each_segment.first

    expected = {
      start_time: segment.start_time,
      end_time: segment.end_time,
      text: segment.text,
      no_speech_prob: segment.no_speech_prob
    }
    assert_equal(expected, segment.deconstruct_keys([:start_time, :end_time, :text, :no_speech_prob, :non_existent]))
  end
end