feat: support config-free ERP app versioning

tests/integration.sh

@@ -22,23 +22,8 @@ git commit -qm initial
 git remote add origin "${test_root}/remote.git"
 git push -qu origin main
 git switch -qc develop
-cat >> pyproject.toml <<'TOML'
-
-[tool.bumpversion]
-current_version = "0.0.1"
-commit = false
-tag = false
-
-[[tool.bumpversion.files]]
-filename = "erp_operations/__init__.py"
-search = '__version__ = "{current_version}"'
-replace = '__version__ = "{new_version}"'
-TOML
-git add pyproject.toml
-git commit -qm 'configure versioning'
 git push -qu origin develop
 
-export INPUT_CONFIG_FILE=pyproject.toml
 export INPUT_VERSION_FILE=erp_operations/__init__.py
 export INPUT_BASE_BRANCH=main
 export INPUT_TARGET_BRANCH=develop
@@ -53,7 +38,7 @@ export RUNNER_TEMP="${test_root}"
 export GITHUB_OUTPUT="${test_root}/output"
 
 "${repo_root}/scripts/bump.sh"
-grep -q '^current_version = "0.0.2"$' pyproject.toml
+! grep -q '^\[tool.bumpversion\]' pyproject.toml
 grep -q '^__version__ = "0.0.2"$' erp_operations/__init__.py
 grep -q '^bumped=true$' "${GITHUB_OUTPUT}"
 grep -q '^previous-version=0.0.1$' "${GITHUB_OUTPUT}"