TextToSpeechPython/tests/test_background_workers.py at main · thomasthaddeus/TextToSpeechPython · GitHub

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from pathlib import Path

from app.controller.background_workers import (
    BatchExportWorker,
    DocumentParseWorker,
    build_provider_input,
)
from app.model.app_settings import AppSettings
from app.model.tts_providers import TTSProviderCapabilities, TTSProviderConfig


class FakeTTSProcessor:
    def __init__(self, provider_config):
        self.provider_config = provider_config

    def get_capabilities(self):
        return TTSProviderCapabilities(supports_ssml=True)

    def text_to_speech(self, text, use_ssml=False, voice=None, metadata=None):
        payload = "|".join(
            (
                self.provider_config.provider_name,
                str(use_ssml),
                voice or "",
                str(metadata or {}),
                text,
            )
        )
        return payload.encode("utf-8")


def fake_tts_processor(provider_config):
    return FakeTTSProcessor(provider_config)


def test_document_parse_worker_can_cancel_before_parsing():
    cancelled = []
    finished = []
    failed = []
    worker = DocumentParseWorker("does-not-need-to-exist.txt")
    worker.cancelled.connect(lambda: cancelled.append(True))
    worker.finished.connect(finished.append)
    worker.failed.connect(failed.append)

    worker.request_cancel()
    worker.run()

    assert cancelled == [True]
    assert not finished
    assert not failed


def test_document_parse_worker_can_parse_raw_html_sources():
    finished = []
    failed = []
    worker = DocumentParseWorker(
        "<html><body><h1>Worker HTML</h1><p>Unique worker HTML body.</p></body></html>",
        source_kind="html",
    )
    worker.finished.connect(finished.append)
    worker.failed.connect(failed.append)

    worker.run()

    assert not failed
    assert len(finished) == 1
    assert finished[0][0]["source_type"] == "html"
    assert "Unique worker HTML body." in finished[0][0]["primary_text"]


def test_build_provider_input_uses_plain_text_for_non_ssml_provider():
    text, use_ssml = build_provider_input(
        "Keep this plain text.",
        AppSettings(tts_provider="gemini", auto_clean_text=False),
        TTSProviderCapabilities(supports_ssml=False),
    )

    assert text == "Keep this plain text."
    assert not use_ssml


def test_build_provider_input_strips_narration_markup_for_plain_text_provider():
    text, use_ssml = build_provider_input(
        'Intro [[narration speaker="Avery" voice="en-US-JennyNeural" '
        'rate="slow"]]dialogue text[[/narration]]',
        AppSettings(tts_provider="gemini", auto_clean_text=False),
        TTSProviderCapabilities(supports_ssml=False),
    )

    assert "Intro" in text
    assert "Avery: dialogue text" in text
    assert "[[narration" not in text
    assert not use_ssml


def test_batch_export_worker_writes_files_and_reports_progress(
    runtime_tmp_path, monkeypatch
):
    rows = [
        {
            "item_number": 1,
            "title": "Opening Context",
            "content_mode": "combine",
            "resolved_text": "Unique batch worker sample text.",
        }
    ]
    finished = []
    failed = []
    progress = []
    monkeypatch.setattr(
        "app.controller.background_workers.create_tts_processor",
        fake_tts_processor,
    )
    worker = BatchExportWorker(
        rows=rows,
        output_dir=runtime_tmp_path,
        settings=AppSettings(auto_clean_text=False),
        provider_config=TTSProviderConfig(
            provider_name="azure",
            credentials={"subscription_key": "fake-key", "region": "fake-region"},
        ),
    )
    worker.finished.connect(finished.append)
    worker.failed.connect(lambda message, files: failed.append((message, files)))
    worker.progress.connect(
        lambda completed, total, path: progress.append(
            (completed, total, Path(path).name)
        )
    )

    worker.run()

    assert not failed
    assert len(finished) == 1
    assert len(finished[0]) == 1
    assert progress == [(1, 1, "item_01_opening_context_combine.mp3")]
    exported_file = runtime_tmp_path / "item_01_opening_context_combine.mp3"
    assert exported_file.exists()
    assert b"Unique batch worker sample text" in exported_file.read_bytes()


def test_batch_export_worker_can_cancel_between_rows(runtime_tmp_path, monkeypatch):
    rows = [
        {
            "item_number": 1,
            "title": "First",
            "content_mode": "combine",
            "resolved_text": "First cancel sample.",
        },
        {
            "item_number": 2,
            "title": "Second",
            "content_mode": "combine",
            "resolved_text": "Second cancel sample.",
        },
    ]
    finished = []
    cancelled = []
    progress = []
    monkeypatch.setattr(
        "app.controller.background_workers.create_tts_processor",
        fake_tts_processor,
    )
    worker = BatchExportWorker(
        rows=rows,
        output_dir=runtime_tmp_path,
        settings=AppSettings(auto_clean_text=False),
        provider_config=TTSProviderConfig(
            provider_name="azure",
            credentials={"subscription_key": "fake-key", "region": "fake-region"},
        ),
    )
    worker.finished.connect(finished.append)
    worker.cancelled.connect(cancelled.append)

    def cancel_after_first_file(completed, total, path):
        progress.append((completed, total, Path(path).name))
        worker.request_cancel()

    worker.progress.connect(cancel_after_first_file)

    worker.run()

    assert not finished
    assert progress == [(1, 2, "item_01_first_combine.mp3")]
    assert len(cancelled) == 1
    assert len(cancelled[0]) == 1
    assert (runtime_tmp_path / "item_01_first_combine.mp3").exists()
    assert not (runtime_tmp_path / "item_02_second_combine.mp3").exists()