From 483e31f93bf6b14050572f05add922a65f59f6ac Mon Sep 17 00:00:00 2001
From: Nathan McDougall <nathan.j.mcdougall@gmail.com>
Date: Fri, 25 Oct 2024 09:19:00 +1300
Subject: [PATCH] Add more tests for `usethis tool ruff` (#52)

---
 .pre-commit-config.yaml                      |  2 +-
 src/usethis/_integrations/pre_commit/core.py |  2 +-
 tests/usethis/_interface/test_tool.py        | 32 ++++++++++++++++++++
 3 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0600fee..739971a 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: "v0.21"
+    rev: "v0.22"
     hooks:
       - id: validate-pyproject
         additional_dependencies: ["validate-pyproject-schema-store[all]"]
diff --git a/src/usethis/_integrations/pre_commit/core.py b/src/usethis/_integrations/pre_commit/core.py
index 9c48dc0..81c7c10 100644
--- a/src/usethis/_integrations/pre_commit/core.py
+++ b/src/usethis/_integrations/pre_commit/core.py
@@ -13,7 +13,7 @@
         additional_dependencies: ["validate-pyproject-schema-store[all]"]
 """
 # Manually bump this version when necessary
-_VALIDATEPYPROJECT_VERSION = "v0.21"
+_VALIDATEPYPROJECT_VERSION = "v0.22"
 
 
 def add_pre_commit_config() -> None:
diff --git a/tests/usethis/_interface/test_tool.py b/tests/usethis/_interface/test_tool.py
index 0a8a83a..1d47327 100644
--- a/tests/usethis/_interface/test_tool.py
+++ b/tests/usethis/_interface/test_tool.py
@@ -405,6 +405,38 @@ def test_config_file(self, uv_init_dir: Path):
             # Assert
             assert (uv_init_dir / "pyproject.toml").read_text() == ""
 
+        def test_blank_slate(self, uv_init_dir: Path):
+            # Arrange
+            contents = (uv_init_dir / "pyproject.toml").read_text()
+
+            # Act
+            with change_cwd(uv_init_dir):
+                _ruff(remove=True, offline=is_offline())
+
+            # Assert
+            assert (uv_init_dir / "pyproject.toml").read_text() == contents
+
+        def test_roundtrip(self, uv_init_dir: Path):
+            # Arrange
+            contents = (uv_init_dir / "pyproject.toml").read_text()
+
+            # Act
+            with change_cwd(uv_init_dir):
+                _ruff(offline=is_offline())
+                _ruff(remove=True, offline=is_offline())
+
+            # Assert
+            assert (
+                (uv_init_dir / "pyproject.toml").read_text()
+                == contents
+                + """\
+
+[tool.uv]
+dev-dependencies = []
+
+"""
+            )
+
 
 class TestPytest:
     def test_dep(self, uv_init_dir: Path):