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tests/README.md

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+# Jimaku-DL Tests
+
+This directory contains tests for the jimaku-dl package using pytest.
+
+## Running Tests
+
+To run all tests:
+
+```bash
+pytest
+```
+
+To run with verbose output:
+
+```bash
+pytest -v
+```
+
+To run a specific test file:
+
+```bash
+pytest tests/test_downloader.py
+```
+
+To run a specific test:
+
+```bash
+pytest tests/test_downloader.py::TestJimakuDownloader::test_init
+```
+
+## Test Coverage
+
+To generate a test coverage report:
+
+```bash
+pytest --cov=jimaku_dl
+```
+
+For an HTML coverage report:
+
+```bash
+pytest --cov=jimaku_dl --cov-report=html
+```
+
+## Adding Tests
+
+1. Create test files with the naming convention `test_*.py`
+2. Create test classes with the naming convention `Test*`
+3. Create test methods with the naming convention `test_*`
+4. Use the fixtures defined in `conftest.py` for common functionality