Add common tasks.

tasks/__init__.py

+from invoke import task, Collection  # type: ignore
+
+import tasks.test
+from tasks.helpers import title
+
+
+@task()
+def format(c):
+    """Format code"""
+    title(format.__doc__)
+    c.run("black splito tasks")
+
+
+@task()
+def security(c):
+    """Check code security issues."""
+    title(security.__doc__)
+    c.run("safety check")
+
+
+ns = Collection()
+ns.add_task(format)
+ns.add_task(security)
+ns.add_collection(tasks.test)

tasks/helpers.py

+from termcolor import cprint
+
+
+def title(message: str) -> None:
+    cprint("\n* {}".format(message), "blue")

tasks/test.py

+from invoke import task
+
+from tasks.helpers import title
+
+
+@task
+def lint(c):
+    """Run Linter."""
+    title(lint.__doc__)
+    c.run("flake8 splito tasks", pty=True)
+
+
+@task
+def types(c):
+    """Run type checker."""
+    title(types.__doc__)
+    c.run("mypy --strict splito", pty=True)
+
+
+@task(lint, types)
+def static(c):
+    pass
+
+
+@task
+def unit(c):
+    """Run unit tests."""
+    title(unit.__doc__)
+    c.run("mamba --format documentation splito/domain", pty=True)
+    c.run("mamba --format documentation splito/use_cases", pty=True)
+
+
+@task
+def integration(c):
+    """Run integration tests."""
+    title(integration.__doc__)
+    pass
+
+
+@task
+def functional(c):
+    """Run functional tests."""
+    title(functional.__doc__)
+
+
+@task(static, unit)
+def fast(c):
+    pass
+
+
+@task(integration, functional)
+def slow(c):
+    pass
+
+
+@task(fast, slow, name="all", default=True)
+def all(c):
+    pass