feat: Add version tag bump script

bump_version_test.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env -S uv run --script
+# /// script
+# dependencies = ["pytest"]
+# ///
+
+from pathlib import Path
+import subprocess
+import sys
+
+import pytest
+
+import bump_version as script
+
+
+@pytest.mark.parametrize("tags, part, expected", [
+    ([], "patch", "v0.0.1"),
+    ([], "minor", "v0.1.0"),
+    ([], "major", "v1.0.0"),
+    (["v1.9.9", "v1.10.2", "v1.2.3"], "patch", "v1.10.3"),
+    (["v1.9.9", "v1.10.2"], "minor", "v1.11.0"),
+    (["v1.9.9", "v1.10.2"], "major", "v2.0.0"),
+    (["1.2.3", "v1.0.0"], "patch", "1.2.4"),
+    (["release", "v9.0.0-rc.1", "v01.0.0", "v1.2.3+build", "v1.2.3"], "patch", "v1.2.4"),
+])
+def test_next_tag(tags: list[str], part: str, expected: str) -> None:
+    assert script.next_tag(tags=tags, part=part) == expected
+
+
+@pytest.mark.parametrize("push", [False, True])
+def test_create_and_push_tag(tmp_path: Path, push: bool) -> None:
+    repository = tmp_path / "repository"
+    remote = tmp_path / "remote.git"
+    subprocess.run(args=["git", "init", "--initial-branch=master", str(repository)], check=True, capture_output=True)
+    subprocess.run(args=["git", "init", "--bare", str(remote)], check=True, capture_output=True)
+    script.git(cwd=repository, arguments=["-c", "user.name=Test", "-c", "user.email=test@example.com",
+                                          "-c", "commit.gpgsign=false", "commit", "--allow-empty", "--message=Initial"])
+    script.git(cwd=repository, arguments=["remote", "add", "origin", str(remote)])
+    script.git(cwd=repository, arguments=["tag", "v1.9.9"])
+    script.git(cwd=repository, arguments=["tag", "v1.10.2"])
+    command = [sys.executable, str(Path(script.__file__).resolve()), "--minor", "--cwd", str(repository)]
+    if push:
+        command.append("--push")
+    subprocess.run(args=command, check=True, capture_output=True, text=True)
+    assert script.git(cwd=repository, arguments=["rev-parse", "v1.11.0"]) == script.git(
+        cwd=repository, arguments=["rev-parse", "HEAD"],
+    )
+    assert script.git(cwd=remote, arguments=["tag", "--list"]) == ("v1.11.0" if push else "")
+    assert script.git(cwd=remote, arguments=["for-each-ref", "refs/heads"]) == ""
+
+
+@pytest.mark.parametrize("arguments", [[], ["--major", "--patch"]])
+def test_requires_exactly_one_bump(arguments: list[str]) -> None:
+    result = subprocess.run(
+        args=[sys.executable, str(Path(script.__file__).resolve()), *arguments], capture_output=True,
+    )
+    assert result.returncode == 2
+
+
+def test_missing_repository(tmp_path: Path) -> None:
+    result = subprocess.run(
+        args=[sys.executable, str(Path(script.__file__).resolve()), "--patch", "--cwd", str(tmp_path)],
+        capture_output=True, text=True,
+    )
+    assert result.returncode == 1
+    assert "Git failed:" in result.stderr
+
+
+if __name__ == "__main__":
+    sys.exit(pytest.main(args=[str(Path(__file__).resolve()), *sys.argv[1:]]))