refactor(Init): make project_info a module and remove self.project_info

Author: bearomorphism

commitizen/commands/init.py

@@ -1,13 +1,12 @@
 from __future__ import annotations
 
-import os
-import shutil
+from pathlib import Path
 from typing import Any, NamedTuple
 
 import questionary
 import yaml
 
-from commitizen import cmd, factory, out
+from commitizen import cmd, factory, out, project_info
 from commitizen.__version__ import __version__
 from commitizen.config import BaseConfig, JsonConfig, TomlConfig, YAMLConfig
 from commitizen.cz import registry
@@ -65,65 +64,13 @@ def title(self) -> str:
 )
 
 
-class ProjectInfo:
-    """Discover information about the current folder."""
-
-    @property
-    def has_pyproject(self) -> bool:
-        return os.path.isfile("pyproject.toml")
-
-    @property
-    def has_uv_lock(self) -> bool:
-        return os.path.isfile("uv.lock")
-
-    @property
-    def has_setup(self) -> bool:
-        return os.path.isfile("setup.py")
-
-    @property
-    def has_pre_commit_config(self) -> bool:
-        return os.path.isfile(".pre-commit-config.yaml")
-
-    @property
-    def is_python_uv(self) -> bool:
-        return self.has_pyproject and self.has_uv_lock
-
-    @property
-    def is_python_poetry(self) -> bool:
-        if not self.has_pyproject:
-            return False
-        with open("pyproject.toml") as f:
-            return "[tool.poetry]" in f.read()
-
-    @property
-    def is_python(self) -> bool:
-        return self.has_pyproject or self.has_setup
-
-    @property
-    def is_rust_cargo(self) -> bool:
-        return os.path.isfile("Cargo.toml")
-
-    @property
-    def is_npm_package(self) -> bool:
-        return os.path.isfile("package.json")
-
-    @property
-    def is_php_composer(self) -> bool:
-        return os.path.isfile("composer.json")
-
-    @property
-    def is_pre_commit_installed(self) -> bool:
-        return bool(shutil.which("pre-commit"))
-
-
 class Init:
     _PRE_COMMIT_CONFIG_PATH = ".pre-commit-config.yaml"
 
     def __init__(self, config: BaseConfig, *args: object) -> None:
         self.config: BaseConfig = config
         self.encoding = config.settings["encoding"]
         self.cz = factory.committer_factory(self.config)
-        self.project_info = ProjectInfo()
 
     def __call__(self) -> None:
         if self.config.path:
@@ -167,7 +114,7 @@ def __call__(self) -> None:
             ) as config_file:
                 yaml.safe_dump(config_data, stream=config_file)
 
-            if not self.project_info.is_pre_commit_installed:
+            if not project_info.is_pre_commit_installed():
                 raise InitFailedError(
                     "Failed to install pre-commit hook.\n"
                     "pre-commit is not installed in current environment."
@@ -215,14 +162,10 @@ def __call__(self) -> None:
         out.success("Configuration complete 🚀")
 
     def _ask_config_path(self) -> str:
-        default_path = (
-            "pyproject.toml" if self.project_info.has_pyproject else ".cz.toml"
-        )
-
         name: str = questionary.select(
             "Please choose a supported config file: ",
             choices=CONFIG_FILES,
-            default=default_path,
+            default=project_info.get_default_config_filename(),
             style=self.cz.style,
         ).unsafe_ask()
         return name
@@ -287,37 +230,17 @@ def _ask_version_provider(self) -> str:
             "Choose the source of the version:",
             choices=_VERSION_PROVIDER_CHOICES,
             style=self.cz.style,
-            default=self._default_version_provider,
+            default=project_info.get_default_version_provider(),
         ).unsafe_ask()
         return version_provider
 
-    @property
-    def _default_version_provider(self) -> str:
-        if self.project_info.is_python:
-            if self.project_info.is_python_poetry:
-                return "poetry"
-            if self.project_info.is_python_uv:
-                return "uv"
-            return "pep621"
-
-        if self.project_info.is_rust_cargo:
-            return "cargo"
-        if self.project_info.is_npm_package:
-            return "npm"
-        if self.project_info.is_php_composer:
-            return "composer"
-
-        return "commitizen"
-
     def _ask_version_scheme(self) -> str:
         """Ask for setting: version_scheme"""
-        default_scheme = "pep440" if self.project_info.is_python else "semver"
-
         scheme: str = questionary.select(
             "Choose version scheme: ",
             choices=KNOWN_SCHEMES,
             style=self.cz.style,
-            default=default_scheme,
+            default=project_info.get_default_version_scheme(),
         ).unsafe_ask()
         return scheme
 
@@ -351,8 +274,7 @@ def _get_config_data(self) -> dict[str, Any]:
             ],
         }
 
-        if not self.project_info.has_pre_commit_config:
-            # .pre-commit-config.yaml does not exist
+        if not Path(".pre-commit-config.yaml").is_file():
             return {"repos": [CZ_HOOK_CONFIG]}
 
         with open(self._PRE_COMMIT_CONFIG_PATH, encoding=self.encoding) as config_file:

commitizen/project_info.py

@@ -0,0 +1,47 @@
+"""Resolves project information about the current working directory."""
+
+import shutil
+from pathlib import Path
+from typing import Literal
+
+
+def is_pre_commit_installed() -> bool:
+    return bool(shutil.which("pre-commit"))
+
+
+def get_default_version_provider() -> Literal[
+    "commitizen", "cargo", "composer", "npm", "pep621", "poetry", "uv"
+]:
+    pyproject_path = Path("pyproject.toml")
+    if pyproject_path.is_file():
+        if "[tool.poetry]" in pyproject_path.read_text():
+            return "poetry"
+        if Path("uv.lock").is_file():
+            return "uv"
+        return "pep621"
+
+    if Path("setup.py").is_file():
+        return "pep621"
+
+    if Path("Cargo.toml").is_file():
+        return "cargo"
+
+    if Path("package.json").is_file():
+        return "npm"
+
+    if Path("composer.json").is_file():
+        return "composer"
+
+    return "commitizen"
+
+
+def get_default_config_filename() -> Literal["pyproject.toml", ".cz.toml"]:
+    return "pyproject.toml" if Path("pyproject.toml").is_file() else ".cz.toml"
+
+
+def get_default_version_scheme() -> Literal["pep440", "semver"]:
+    return (
+        "pep440"
+        if Path("pyproject.toml").is_file() or Path("setup.py").is_file()
+        else "semver"
+    )

tests/commands/test_init_command.py

@@ -121,7 +121,7 @@ def test_init_without_choosing_tag(config: BaseConfig, mocker: MockFixture, tmpd
 def pre_commit_installed(mocker: MockFixture):
     # Assume the `pre-commit` is installed
     mocker.patch(
-        "commitizen.commands.init.ProjectInfo.is_pre_commit_installed",
+        "commitizen.project_info.is_pre_commit_installed",
         return_value=True,
     )
     # And installation success (i.e. no exception raised)
@@ -231,7 +231,7 @@ def test_pre_commit_not_installed(
     ):
         # Assume `pre-commit` is not installed
         mocker.patch(
-            "commitizen.commands.init.ProjectInfo.is_pre_commit_installed",
+            "commitizen.project_info.is_pre_commit_installed",
             return_value=False,
         )
         with tmpdir.as_cwd():

tests/test_project_info.py

@@ -0,0 +1,90 @@
+"""Tests for project_info module."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from commitizen import project_info
+
+
+def _create_project_files(files: dict[str, str | None]) -> None:
+    for file_path, content in files.items():
+        path = Path(file_path)
+        if content is None:
+            path.touch()
+        else:
+            path.write_text(content)
+
+
+@pytest.mark.parametrize(
+    "which_return, expected",
+    [
+        ("/usr/local/bin/pre-commit", True),
+        (None, False),
+        ("", False),
+    ],
+)
+def test_is_pre_commit_installed(mocker, which_return, expected):
+    mocker.patch("shutil.which", return_value=which_return)
+    assert project_info.is_pre_commit_installed() is expected
+
+
+@pytest.mark.parametrize(
+    "files, expected",
+    [
+        (
+            {"pyproject.toml": '[tool.poetry]\nname = "test"\nversion = "0.1.0"'},
+            "poetry",
+        ),
+        ({"pyproject.toml": "", "uv.lock": ""}, "uv"),
+        (
+            {"pyproject.toml": '[tool.commitizen]\nversion = "0.1.0"'},
+            "pep621",
+        ),
+        ({"setup.py": ""}, "pep621"),
+        ({"Cargo.toml": ""}, "cargo"),
+        ({"package.json": ""}, "npm"),
+        ({"composer.json": ""}, "composer"),
+        ({}, "commitizen"),
+        (
+            {
+                "pyproject.toml": "",
+                "Cargo.toml": "",
+                "package.json": "",
+                "composer.json": "",
+            },
+            "pep621",
+        ),
+    ],
+)
+def test_get_default_version_provider(chdir, files, expected):
+    _create_project_files(files)
+    assert project_info.get_default_version_provider() == expected
+
+
+@pytest.mark.parametrize(
+    "files, expected",
+    [
+        ({"pyproject.toml": ""}, "pyproject.toml"),
+        ({}, ".cz.toml"),
+    ],
+)
+def test_get_default_config_filename(chdir, files, expected):
+    _create_project_files(files)
+    assert project_info.get_default_config_filename() == expected
+
+
+@pytest.mark.parametrize(
+    "files, expected",
+    [
+        ({"pyproject.toml": ""}, "pep440"),
+        ({"setup.py": ""}, "pep440"),
+        ({"package.json": ""}, "semver"),
+        ({}, "semver"),
+    ],
+)
+def test_get_default_version_scheme(chdir, files, expected):
+    _create_project_files(files)
+    assert project_info.get_default_version_scheme() == expected