diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cbe0153..2b6da92 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,6 +27,8 @@ jobs:
 
           readarray -t changed_files <<<"$(jq -r '.[]' <<<'${{ steps.files.outputs.added_modified }}')"
           ~/go/bin/editorconfig-checker ${changed_files[@]}
+      - name: Lint and format Python with Ruff
+        uses: astral-sh/ruff-action@v1
 
   typo:
     runs-on: ubuntu-latest
diff --git a/tests/conftest.py b/tests/conftest.py
index 74c91c8..3f39517 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -4,13 +4,15 @@
 import pytest
 from helper import TempRepository
 
-def create_repo(dirname = None):
+
+def create_repo(dirname=None):
     repo = TempRepository(dirname)
     tmp_file_a = repo.create_tmp_file()
     tmp_file_b = repo.create_tmp_file()
     repo.switch_cwd_under_repo()
     return repo
 
+
 def init_repo_git_status(repo):
     git = repo.get_repo_git()
     git.add(".")
@@ -18,12 +20,14 @@ def init_repo_git_status(repo):
     git.config("--local", "user.email", "test@git-extras.com")
     git.commit("-m", "chore: initial commit")
 
+
 @pytest.fixture(scope="module")
 def temp_repo():
     repo = create_repo()
     init_repo_git_status(repo)
     return repo
 
+
 @pytest.fixture(scope="module")
 def named_temp_repo(request):
     dirname = request.param
diff --git a/tests/helper.py b/tests/helper.py
index 1c9349f..d71ed8d 100644
--- a/tests/helper.py
+++ b/tests/helper.py
@@ -10,15 +10,16 @@ GITHUB_ORIGIN = "https://github.com/tj/git-extras.git"
 GITLAB_ORIGIN = "https://gitlab.com/tj/git-extras.git"
 BITBUCKET_ORIGIN = "https://bitbucket.org/tj/git-extras.git"
 
+
 class TempRepository:
-    def __init__(self, repo_work_dir = None):
+    def __init__(self, repo_work_dir=None):
         self._system_tmpdir = tempfile.gettempdir()
         if repo_work_dir == None:
             repo_work_dir = tempfile.mkdtemp()
         else:
             repo_work_dir = os.path.join(self._system_tmpdir, repo_work_dir)
         self._cwd = repo_work_dir
-        self._tempdirname = self._cwd[len(self._system_tmpdir) + 1:]
+        self._tempdirname = self._cwd[len(self._system_tmpdir) + 1 :]
         self._git_repo = Repo.init(repo_work_dir, b="default")
         self._files = []
         self.change_origin_to_github()
@@ -50,7 +51,7 @@ class TempRepository:
         tmp_dir = tempfile.mkdtemp()
         return tmp_dir
 
-    def create_tmp_file(self, temp_dir = None):
+    def create_tmp_file(self, temp_dir=None):
         if temp_dir == None:
             temp_dir = self._cwd
 
@@ -86,8 +87,9 @@ class TempRepository:
         origin_extras_command = os.path.join(GIT_EXTRAS_BIN, command_name)
         temp_extras_command = os.path.join(self._cwd, command_name)
         helpers = [
-                os.path.join(GIT_EXTRAS_HELPER, "git-extra-utility"),
-                os.path.join(GIT_EXTRAS_HELPER, "is-git-repo")]
+            os.path.join(GIT_EXTRAS_HELPER, "git-extra-utility"),
+            os.path.join(GIT_EXTRAS_HELPER, "is-git-repo"),
+        ]
 
         if not os.path.exists(temp_extras_command):
             whole = []
@@ -106,7 +108,7 @@ class TempRepository:
             os.chmod(temp_extras_command, 0o775)
 
         script = [temp_extras_command, *params]
-        print(f"Run the script \"{script}\"")
+        print(f'Run the script "{script}"')
         return subprocess.run(script, capture_output=True)
 
     def change_origin(self, origin_url):
diff --git a/tests/pyproject.toml b/tests/pyproject.toml
index 4326657..f12d487 100644
--- a/tests/pyproject.toml
+++ b/tests/pyproject.toml
@@ -21,3 +21,66 @@ testpaths = ["."]
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.ruff]
+# Exclude a variety of commonly ignored directories.
+exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".git-rewrite",
+    ".hg",
+    ".ipynb_checkpoints",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pyenv",
+    ".pytest_cache",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    ".vscode",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "site-packages",
+    "venv",
+]
+
+# Same as Black.
+line-length = 88
+indent-width = 4
+
+# Assume Python 3.9
+target-version = "py39"
+
+[tool.ruff.lint]
+# Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
+select = ["E4", "E7", "E9", "F"]
+ignore = []
+
+# Allow fix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = []
+
+# Allow unused variables when underscore-prefixed.
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+[tool.ruff.format]
+# Like Black, use double quotes for strings.
+quote-style = "double"
+
+# Like Black, indent with spaces, rather than tabs.
+indent-style = "space"
+
+# Like Black, respect magic trailing commas.
+skip-magic-trailing-comma = false
+
+# Like Black, automatically detect the appropriate line ending.
+line-ending = "auto"
diff --git a/tests/test_git_abort.py b/tests/test_git_abort.py
index 38e52c5..1e3785f 100644
--- a/tests/test_git_abort.py
+++ b/tests/test_git_abort.py
@@ -1,5 +1,6 @@
 from git import GitCommandError
 
+
 class TestGitAbort:
     def test_init(self, temp_repo):
         git = temp_repo.get_repo_git()
diff --git a/tests/test_git_archive_file.py b/tests/test_git_archive_file.py
index 6874322..86ef532 100644
--- a/tests/test_git_archive_file.py
+++ b/tests/test_git_archive_file.py
@@ -1,5 +1,6 @@
 import os, pytest
 
+
 class TestGitArchiveFile:
     def test_init(self, temp_repo):
         git = temp_repo.get_repo_git()
@@ -16,14 +17,17 @@ class TestGitArchiveFile:
         filename = "{0}.{1}.zip".format(temp_repo.get_repo_dirname(), git.describe())
         assert filename in os.listdir()
 
-    def test_archive_file_on_any_not_tags_branch_without_default_branch(self, temp_repo):
+    def test_archive_file_on_any_not_tags_branch_without_default_branch(
+        self, temp_repo
+    ):
         git = temp_repo.get_repo_git()
         git.checkout("-b", "not-tags-branch")
         temp_repo.invoke_installed_extras_command("archive-file")
         filename = "{0}.{1}.{2}.zip".format(
-                temp_repo.get_repo_dirname(),
-                git.describe("--always", "--long"),
-                "not-tags-branch")
+            temp_repo.get_repo_dirname(),
+            git.describe("--always", "--long"),
+            "not-tags-branch",
+        )
         assert filename in os.listdir()
 
     def test_archive_file_on_any_not_tags_branch_with_default_branch(self, temp_repo):
@@ -32,8 +36,8 @@ class TestGitArchiveFile:
         git.config("git-extras.default-branch", "default")
         temp_repo.invoke_installed_extras_command("archive-file")
         filename = "{0}.{1}.zip".format(
-                temp_repo.get_repo_dirname(),
-                git.describe("--always", "--long"))
+            temp_repo.get_repo_dirname(), git.describe("--always", "--long")
+        )
         assert filename in os.listdir()
 
     def test_archive_file_on_branch_name_has_slash(self, temp_repo):
@@ -41,9 +45,10 @@ class TestGitArchiveFile:
         git.checkout("-b", "feature/slash")
         temp_repo.invoke_installed_extras_command("archive-file")
         filename = "{0}.{1}.{2}.zip".format(
-                temp_repo.get_repo_dirname(),
-                git.describe("--always", "--long"),
-                "feature-slash")
+            temp_repo.get_repo_dirname(),
+            git.describe("--always", "--long"),
+            "feature-slash",
+        )
         assert filename in os.listdir()
 
     @pytest.mark.parametrize("named_temp_repo", ["backslash\\dir"], indirect=True)
@@ -51,9 +56,8 @@ class TestGitArchiveFile:
         named_temp_repo.invoke_installed_extras_command("archive-file")
         git = named_temp_repo.get_repo_git()
         filename = "{0}.{1}.{2}.zip".format(
-                "backslash-dir",
-                git.describe("--always", "--long"),
-                "default")
+            "backslash-dir", git.describe("--always", "--long"), "default"
+        )
         assert filename in os.listdir()
 
     def test_archive_file_on_tag_name_has_slash(self, temp_repo):
@@ -65,6 +69,6 @@ class TestGitArchiveFile:
         temp_repo.invoke_installed_extras_command("archive-file")
         description_include_version = git.describe("--always", "--long")
         filename = "{0}.{1}.zip".format(
-                temp_repo.get_repo_dirname(),
-                description_include_version.replace("/", "-"))
+            temp_repo.get_repo_dirname(), description_include_version.replace("/", "-")
+        )
         assert filename in os.listdir()
diff --git a/tests/test_git_authors.py b/tests/test_git_authors.py
index 8eb3cf9..45038c3 100644
--- a/tests/test_git_authors.py
+++ b/tests/test_git_authors.py
@@ -1,9 +1,12 @@
 import os, subprocess
 
-expected_authors_list = "test <test@git-extras.com>\ntestagain <testagain@git-extras.com>\n"
+expected_authors_list = (
+    "test <test@git-extras.com>\ntestagain <testagain@git-extras.com>\n"
+)
 expected_authors_list_without_email = "test\ntestagain\n"
 authors_file = "AUTHORS"
 
+
 class TestGitAuthors:
     def test_init(self, temp_repo):
         git = temp_repo.get_repo_git()
diff --git a/tests/test_git_browse.py b/tests/test_git_browse.py
index ff4b4db..1d015a2 100644
--- a/tests/test_git_browse.py
+++ b/tests/test_git_browse.py
@@ -3,20 +3,22 @@ from testpath import MockCommand, modified_env
 
 UNKNOWN_SITE_ORIGIN = "https://unknown-site.com/tj/git-extras.git"
 
+
 def get_file_uri(mode, filename, git):
     commit_hash = git.rev_parse("HEAD")
     if mode == "github":
-        return "https://github.com/tj/git-extras/blob/" + commit_hash + '/' + filename
+        return "https://github.com/tj/git-extras/blob/" + commit_hash + "/" + filename
     if mode == "gitlab":
-        return "https://gitlab.com/tj/git-extras/-/blob/" + commit_hash + '/' + filename
+        return "https://gitlab.com/tj/git-extras/-/blob/" + commit_hash + "/" + filename
     if mode == "bitbucket":
-        return "https://bitbucket.org/tj/git-extras/src/" + commit_hash + '/' + filename
+        return "https://bitbucket.org/tj/git-extras/src/" + commit_hash + "/" + filename
+
 
 class TestGitBrowse:
     def test_browse_github_file_on_mac(self, temp_repo):
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "darwin" }), MockCommand("open") as openCommand:
+        with modified_env({"OSTYPE": "darwin"}), MockCommand("open") as openCommand:
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("github", filename, git)
             openCommand.assert_called([expected_url])
@@ -25,7 +27,7 @@ class TestGitBrowse:
         temp_repo.change_origin_to_gitlab()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "darwin" }), MockCommand("open") as openCommand:
+        with modified_env({"OSTYPE": "darwin"}), MockCommand("open") as openCommand:
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("gitlab", filename, git)
             openCommand.assert_called([expected_url])
@@ -34,7 +36,7 @@ class TestGitBrowse:
         temp_repo.change_origin_to_bitbucket()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "darwin" }), MockCommand("open") as openCommand:
+        with modified_env({"OSTYPE": "darwin"}), MockCommand("open") as openCommand:
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("bitbucket", filename, git)
             openCommand.assert_called([expected_url])
@@ -43,7 +45,7 @@ class TestGitBrowse:
         temp_repo.change_origin_to_github()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "msys" }), MockCommand("start") as openCommand:
+        with modified_env({"OSTYPE": "msys"}), MockCommand("start") as openCommand:
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("github", filename, git)
             openCommand.assert_called([expected_url])
@@ -52,7 +54,7 @@ class TestGitBrowse:
         temp_repo.change_origin_to_gitlab()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "msys" }), MockCommand("start") as openCommand:
+        with modified_env({"OSTYPE": "msys"}), MockCommand("start") as openCommand:
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("gitlab", filename, git)
             openCommand.assert_called([expected_url])
@@ -61,7 +63,7 @@ class TestGitBrowse:
         temp_repo.change_origin_to_bitbucket()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "msys" }), MockCommand("start") as openCommand:
+        with modified_env({"OSTYPE": "msys"}), MockCommand("start") as openCommand:
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("bitbucket", filename, git)
             openCommand.assert_called([expected_url])
@@ -70,8 +72,12 @@ class TestGitBrowse:
         temp_repo.change_origin_to_github()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "microsoft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("powershell.exe") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "microsoft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("powershell.exe") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("github", filename, git)
             openCommand.assert_called(["-NoProfile", "start", expected_url])
@@ -80,8 +86,12 @@ class TestGitBrowse:
         temp_repo.change_origin_to_gitlab()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "microsoft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("powershell.exe") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "microsoft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("powershell.exe") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("gitlab", filename, git)
             openCommand.assert_called(["-NoProfile", "start", expected_url])
@@ -90,8 +100,12 @@ class TestGitBrowse:
         temp_repo.change_origin_to_bitbucket()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "microsoft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("powershell.exe") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "microsoft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("powershell.exe") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("bitbucket", filename, git)
             openCommand.assert_called(["-NoProfile", "start", expected_url])
@@ -100,8 +114,12 @@ class TestGitBrowse:
         temp_repo.change_origin_to_github()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "no-micro-soft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "no-micro-soft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("github", filename, git)
             openCommand.assert_called([expected_url])
@@ -110,8 +128,12 @@ class TestGitBrowse:
         temp_repo.change_origin_to_gitlab()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "no-micro-soft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "no-micro-soft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("gitlab", filename, git)
             openCommand.assert_called([expected_url])
@@ -120,8 +142,12 @@ class TestGitBrowse:
         temp_repo.change_origin_to_bitbucket()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "no-micro-soft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "no-micro-soft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("bitbucket", filename, git)
             openCommand.assert_called([expected_url])
@@ -130,7 +156,10 @@ class TestGitBrowse:
         temp_repo.change_origin_to_github()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("github", filename, git)
             openCommand.assert_called([expected_url])
@@ -139,7 +168,10 @@ class TestGitBrowse:
         temp_repo.change_origin_to_gitlab()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("gitlab", filename, git)
             openCommand.assert_called([expected_url])
@@ -148,7 +180,10 @@ class TestGitBrowse:
         temp_repo.change_origin_to_bitbucket()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename)
             expected_url = get_file_uri("bitbucket", filename, git)
             openCommand.assert_called([expected_url])
@@ -157,7 +192,10 @@ class TestGitBrowse:
         temp_repo.change_origin_to_github()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename, "10", "20")
             expected_url = get_file_uri("github", filename, git)
             openCommand.assert_called([expected_url + "#L10-L20"])
@@ -166,7 +204,10 @@ class TestGitBrowse:
         temp_repo.change_origin_to_gitlab()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename, "10", "20")
             expected_url = get_file_uri("gitlab", filename, git)
             openCommand.assert_called([expected_url + "#L10-20"])
@@ -175,7 +216,10 @@ class TestGitBrowse:
         temp_repo.change_origin_to_bitbucket()
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename, "10", "20")
             expected_url = get_file_uri("bitbucket", filename, git)
             openCommand.assert_called([expected_url + "#lines-10:20"])
@@ -183,13 +227,19 @@ class TestGitBrowse:
     def test_browse_unknown_site_file(self, temp_repo):
         temp_repo.change_origin(UNKNOWN_SITE_ORIGIN)
         git = temp_repo.get_repo_git()
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin")
             openCommand.assert_called([UNKNOWN_SITE_ORIGIN[0:-4]])
 
     def test_browse_unknown_site_file_with_line_number(self, temp_repo):
         git = temp_repo.get_repo_git()
         filename = temp_repo.get_filename(0)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse", "origin", filename, "10", "20")
             openCommand.assert_called([UNKNOWN_SITE_ORIGIN[0:-4]])
diff --git a/tests/test_git_browse_ci.py b/tests/test_git_browse_ci.py
index 761d86d..66dea46 100644
--- a/tests/test_git_browse_ci.py
+++ b/tests/test_git_browse_ci.py
@@ -3,6 +3,7 @@ from testpath import MockCommand, modified_env
 
 UNKNOWN_SITE_ORIGIN = "https://unknown-site.com/tj/git-extras.git"
 
+
 def get_ci_uri_by_domain(mode):
     if mode == "github":
         return "https://github.com/tj/git-extras/actions"
@@ -11,119 +12,156 @@ def get_ci_uri_by_domain(mode):
     if mode == "bitbucket":
         return "https://bitbucket.org/tj/git-extras/addon/pipelines/home"
 
+
 class TestGitBrowse:
     def test_browse_github_ci_on_mac(self, temp_repo):
-        with modified_env({ "OSTYPE": "darwin" }), MockCommand("open") as openCommand:
+        with modified_env({"OSTYPE": "darwin"}), MockCommand("open") as openCommand:
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("github")
             openCommand.assert_called([expected_url])
 
     def test_browse_gitlab_ci_on_mac(self, temp_repo):
         temp_repo.change_origin_to_gitlab()
-        with modified_env({ "OSTYPE": "darwin" }), MockCommand("open") as openCommand:
+        with modified_env({"OSTYPE": "darwin"}), MockCommand("open") as openCommand:
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("gitlab")
             openCommand.assert_called([expected_url])
 
     def test_browse_bitbucket_ci_on_mac(self, temp_repo):
         temp_repo.change_origin_to_bitbucket()
-        with modified_env({ "OSTYPE": "darwin" }), MockCommand("open") as openCommand:
+        with modified_env({"OSTYPE": "darwin"}), MockCommand("open") as openCommand:
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("bitbucket")
             openCommand.assert_called([expected_url])
 
     def test_browse_github_ci_on_git_bash_on_window(self, temp_repo):
         temp_repo.change_origin_to_github()
-        with modified_env({ "OSTYPE": "msys" }), MockCommand("start") as openCommand:
+        with modified_env({"OSTYPE": "msys"}), MockCommand("start") as openCommand:
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("github")
             openCommand.assert_called([expected_url])
 
     def test_browse_gitlab_ci_on_git_bash_on_window(self, temp_repo):
         temp_repo.change_origin_to_gitlab()
-        with modified_env({ "OSTYPE": "msys" }), MockCommand("start") as openCommand:
+        with modified_env({"OSTYPE": "msys"}), MockCommand("start") as openCommand:
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("gitlab")
             openCommand.assert_called([expected_url])
 
     def test_browse_bitbucket_ci_on_git_bash_on_window(self, temp_repo):
         temp_repo.change_origin_to_bitbucket()
-        with modified_env({ "OSTYPE": "msys" }), MockCommand("start") as openCommand:
+        with modified_env({"OSTYPE": "msys"}), MockCommand("start") as openCommand:
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("bitbucket")
             openCommand.assert_called([expected_url])
 
     def test_browse_github_ci_on_WSL_with_microsoft_key(self, temp_repo):
         temp_repo.change_origin_to_github()
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "microsoft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("powershell.exe") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "microsoft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("powershell.exe") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("github")
             openCommand.assert_called(["-NoProfile", "start", expected_url])
 
     def test_browse_gitlab_ci_on_WSL_with_microsoft_key(self, temp_repo):
         temp_repo.change_origin_to_gitlab()
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "microsoft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("powershell.exe") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "microsoft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("powershell.exe") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("gitlab")
             openCommand.assert_called(["-NoProfile", "start", expected_url])
 
     def test_browse_bitbucket_ci_on_WSL_with_microsoft_key(self, temp_repo):
         temp_repo.change_origin_to_bitbucket()
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "microsoft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("powershell.exe") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "microsoft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("powershell.exe") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("bitbucket")
             openCommand.assert_called(["-NoProfile", "start", expected_url])
 
     def test_browse_github_ci_on_WSL_without_microsoft_key(self, temp_repo):
         temp_repo.change_origin_to_github()
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "no-micro-soft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "no-micro-soft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("github")
             openCommand.assert_called([expected_url])
 
     def test_browse_gitlab_ci_on_WSL_without_microsoft_key(self, temp_repo):
         temp_repo.change_origin_to_gitlab()
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "no-micro-soft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "no-micro-soft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("gitlab")
             openCommand.assert_called([expected_url])
 
     def test_browse_bitbucket_ci_on_WSL_without_microsoft_key(self, temp_repo):
         temp_repo.change_origin_to_bitbucket()
-        with modified_env({ "OSTYPE": "linux" }), MockCommand.fixed_output("uname", "no-micro-soft"), \
-            MockCommand.fixed_output("command", "/powershell.exe"), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "linux"}),
+            MockCommand.fixed_output("uname", "no-micro-soft"),
+            MockCommand.fixed_output("command", "/powershell.exe"),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("bitbucket")
             openCommand.assert_called([expected_url])
 
     def test_browse_github_ci_not_mac_or_msys_or_linux(self, temp_repo):
         temp_repo.change_origin_to_github()
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("github")
             openCommand.assert_called([expected_url])
 
     def test_browse_gitlab_ci_not_mac_or_msys_or_linux(self, temp_repo):
         temp_repo.change_origin_to_gitlab()
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("gitlab")
             openCommand.assert_called([expected_url])
 
     def test_browse_bitbucket_ci_not_mac_or_msys_or_linux(self, temp_repo):
         temp_repo.change_origin_to_bitbucket()
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
             expected_url = get_ci_uri_by_domain("bitbucket")
             openCommand.assert_called([expected_url])
 
     def test_browse_unknown_site_file(self, temp_repo):
         temp_repo.change_origin(UNKNOWN_SITE_ORIGIN)
-        with modified_env({ "OSTYPE": "unique-system" }), MockCommand("xdg-open") as openCommand:
+        with (
+            modified_env({"OSTYPE": "unique-system"}),
+            MockCommand("xdg-open") as openCommand,
+        ):
             temp_repo.invoke_extras_command("browse-ci", "origin")
-            openCommand.assert_called([''])
+            openCommand.assert_called([""])