feat: add shortcuts for docker run (stdout only)

In order to allow more integration scenarios we allow bumping to stdout only without changing files.

docker run --rm bump-my-version patch 1.2.3

bumpversion/cli.py

@@ -349,6 +349,30 @@ def show(args: List[str], config_file: Optional[str], format_: str, increment: O
         do_show(*args, config=config, format_=format_, increment=increment)
 
 
+@cli.command()
+@click.argument("current_version", nargs=1, type=str)
+def major(current_version: List[str]) -> None:
+    """Bump current_version to next major version without changing files."""
+    conf = get_configuration(current_version=current_version)
+    do_show("new_version", config=conf, format_="default", increment="major")
+
+
+@cli.command()
+@click.argument("current_version", nargs=1, type=str)
+def minor(current_version: List[str]) -> None:
+    """Bump current_version to next minor version without changing files."""
+    conf = get_configuration(current_version=current_version)
+    do_show("new_version", config=conf, format_="default", increment="minor")
+
+
+@cli.command()
+@click.argument("current_version", nargs=1, type=str)
+def patch(current_version: List[str]) -> None:
+    """Bump current_version to next patch version without changing files."""
+    conf = get_configuration(current_version=current_version)
+    do_show("new_version", config=conf, format_="default", increment="patch")
+
+
 @cli.command()
 @click.argument("files", nargs=-1, type=str)
 @click.option(

tests/test_cli.py

@@ -356,6 +356,54 @@ def test_show(tmp_path: Path, fixtures_path: Path):
     assert result.output.splitlines(keepends=False) == ["1.0.0"]
 
 
+def test_major(tmp_path: Path):
+    """The major subcommand should bump the given value to the next major version."""
+    # Arrange
+    runner: CliRunner = CliRunner()
+
+    with inside_dir(tmp_path):
+        result: Result = runner.invoke(cli.cli, ["major", "v0.1.2"])
+
+    if result.exit_code != 0:
+        print(result.output)
+        print(result.exception)
+
+    assert result.exit_code == 0
+    assert result.output.splitlines(keepends=False) == ["1.0.0"]
+
+
+def test_minor(tmp_path: Path):
+    """The minor subcommand should bump the given value to the next minor version."""
+    # Arrange
+    runner: CliRunner = CliRunner()
+
+    with inside_dir(tmp_path):
+        result: Result = runner.invoke(cli.cli, ["minor", "v0.0.2"])
+
+    if result.exit_code != 0:
+        print(result.output)
+        print(result.exception)
+
+    assert result.exit_code == 0
+    assert result.output.splitlines(keepends=False) == ["0.1.0"]
+
+
+def test_patch(tmp_path: Path):
+    """The patch subcommand should bump the given value to the next patch version."""
+    # Arrange
+    runner: CliRunner = CliRunner()
+
+    with inside_dir(tmp_path):
+        result: Result = runner.invoke(cli.cli, ["patch", "v1.2.3"])
+
+    if result.exit_code != 0:
+        print(result.output)
+        print(result.exception)
+
+    assert result.exit_code == 0
+    assert result.output.splitlines(keepends=False) == ["1.2.4"]
+
+
 def test_show_and_increment(tmp_path: Path, fixtures_path: Path):
     """The show subcommand should incrment the version and display it."""
     # Arrange