diff --git a/.gitignore b/.gitignore
index 3193773..39ee305 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,10 @@ dist/
 
 # Ruff
 .ruff_cache/
+
+# Pytest
+.pytest_cache/
+
+# Coverage
+.coverage
+coverage.xml
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f2d3e9a..91e3af9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,6 +6,10 @@ repos:
       - id: check-toml
       - id: check-yaml
       - id: end-of-file-fixer
+      - id: name-tests-test
+        files: (tests)
+        args:
+          - --pytest-test-first
       - id: trailing-whitespace
   - repo: https://github.com/psf/black
     rev: '23.10.1'
diff --git a/pyproject.toml b/pyproject.toml
index b11f8c2..04ebbbd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,12 @@ lint = [
   "mypy",
   "ruff",
 ]
+test = [
+  "pytest",
+  "pytest-cov",
+  "pytest-custom-exit-code",
+  "pytest-mock",
+]
 
 [tool.setuptools.packages.find]
 include = ["gitmojis*"]
@@ -71,13 +77,50 @@ select = [
   "A",     # flake8-builtins
   "C4",    # flake8-comprehensions
   "T20",   # flake8-print
+  "PT",    # flake8-pytest-style
   "Q",     # flake8-quotes
   "PTH",   # flake8-use-pathlib
 ]
-ignore = ["E501", "N818", "D1", "D205"]
+ignore = ["E501", "N818", "D1", "D205", "PT004", "PT016"]
 
 [tool.ruff.pydocstyle]
 convention = "google"
 
 [tool.ruff.isort]
 known-first-party = ["gitmojis"]
+
+# Pytest
+# https://docs.pytest.org/en/latest/reference/reference.html#configuration-options
+
+[tool.pytest.ini_options]
+addopts = [
+  "-ra",
+  "-q",
+  "--strict-markers",
+  "--cov=src/",
+  "--cov-branch",
+  "--cov-append",
+  "--cov-report=term-missing:skip-covered",
+  "--cov-report=xml",
+  "--suppress-no-test-exit-code",
+]
+pythonpath = [".", "src"]
+testpaths = ["tests/"]
+
+# Coverage.py
+# https://coverage.readthedocs.io/en/latest/config.html
+
+[tool.coverage.report]
+exclude_also = [
+  "@(abc\\.)?abstractmethod",
+  "@overload",
+  "class .*\\bProtocol\\):",
+  "def __repr__",
+  "if __name__ == .__main__.:",
+  "if 0:",
+  "if self.debug:",
+  "if settings.DEBUG",
+  "if TYPE_CHECKING:",
+  "raise AssertionError",
+  "raise NotImplementedError",
+]