diff --git a/testsuite/datmantests/test_backup_and_extract.py b/testsuite/datmantests/test_backup_and_extract.py
index 78b1472..a6cd012 100644
--- a/testsuite/datmantests/test_backup_and_extract.py
+++ b/testsuite/datmantests/test_backup_and_extract.py
@@ -33,6 +33,16 @@ class TestBackupAndExtract(TestCase):
 
         print("extracting")
         dest_path = tdpath.joinpath("desta")
-        subprocess.check_call(("datman", "extract", "--skip-metadata", "--accept-partial", "main", "../desta"), cwd=datman_path)
+        subprocess.check_call(
+            (
+                "datman",
+                "extract",
+                "--skip-metadata",
+                "--accept-partial",
+                "main",
+                "../desta",
+            ),
+            cwd=datman_path,
+        )
 
-        time.sleep(300)
\ No newline at end of file
+        time.sleep(300)
diff --git a/testsuite/helpers/__init__.py b/testsuite/helpers/__init__.py
index f3924c2..d5b092e 100644
--- a/testsuite/helpers/__init__.py
+++ b/testsuite/helpers/__init__.py
@@ -2,7 +2,7 @@ import os.path
 from hashlib import sha256
 from pathlib import Path
 from random import Random
-from typing import Union, Tuple
+from typing import Tuple, Union
 
 import attr
 from immutabledict import immutabledict
@@ -46,7 +46,7 @@ def generate_random_file(rng: Random, path: Path) -> FileDescriptor:
 
     sha256_hasher = sha256()
 
-    with path.open('wb') as file:
+    with path.open("wb") as file:
         while bytes_to_gen > CHUNK_SIZE:
             next_bytes = rng.randbytes(CHUNK_SIZE)
             file.write(next_bytes)
@@ -64,13 +64,16 @@ def generate_random_file(rng: Random, path: Path) -> FileDescriptor:
         file_stat.st_mtime_ns // 1000000,
         file_stat.st_mode,
         file_stat.st_uid,
-        file_stat.st_gid
+        file_stat.st_gid,
     )
 
 
-def generate_random_dir(rng: Random, path: Path, max_remaining_files: int) -> Tuple[DirectoryDescriptor, int]:
+def generate_random_dir(
+    rng: Random, path: Path, max_remaining_files: int
+) -> Tuple[DirectoryDescriptor, int]:
     """
-    Generates a random directory at the given path, and returns its descriptor (and the remaining number of files allowed).
+    Generates a random directory at the given path, and returns its descriptor
+    (and the remaining number of files allowed).
     :param rng: PRNG to use
     :param path: path to use
     :param max_remaining_files: The maximum number of files allowed.
@@ -92,17 +95,22 @@ def generate_random_dir(rng: Random, path: Path, max_remaining_files: int) -> Tu
         if is_file:
             contents[filename] = generate_random_file(rng, filepath)
         else:
-            contents[filename], max_remaining_files = generate_random_dir(rng, filepath, max_remaining_files)
+            contents[filename], max_remaining_files = generate_random_dir(
+                rng, filepath, max_remaining_files
+            )
 
     file_stat = os.stat(path)
 
-    return DirectoryDescriptor(
-        immutabledict(contents),
-        file_stat.st_mtime_ns // 1000000,
-        file_stat.st_mode,
-        file_stat.st_uid,
-        file_stat.st_gid
-    ), max_remaining_files
+    return (
+        DirectoryDescriptor(
+            immutabledict(contents),
+            file_stat.st_mtime_ns // 1000000,
+            file_stat.st_mode,
+            file_stat.st_uid,
+            file_stat.st_gid,
+        ),
+        max_remaining_files,
+    )
 
 
 def scan_file(path: Path) -> FileDescriptor:
@@ -121,7 +129,7 @@ def scan_file(path: Path) -> FileDescriptor:
         file_stat.st_mtime_ns // 1000000,
         file_stat.st_mode,
         file_stat.st_uid,
-        file_stat.st_gid
+        file_stat.st_gid,
     )
 
 
@@ -129,7 +137,7 @@ def scan_dir(path: Path) -> DirectoryDescriptor:
     contents = dict()
     for entry in os.scandir(path):
         name = entry.name
-        if name in ('.', '..'):
+        if name in (".", ".."):
             continue
         filepath = path.joinpath(name)
         if filepath.is_dir():
@@ -145,5 +153,5 @@ def scan_dir(path: Path) -> DirectoryDescriptor:
         file_stat.st_mtime_ns // 1000000,
         file_stat.st_mode,
         file_stat.st_uid,
-        file_stat.st_gid
+        file_stat.st_gid,
     )
diff --git a/testsuite/helpers/datman_helpers.py b/testsuite/helpers/datman_helpers.py
index 4c4f3f3..cb7c8c8 100644
--- a/testsuite/helpers/datman_helpers.py
+++ b/testsuite/helpers/datman_helpers.py
@@ -11,7 +11,8 @@ def set_up_simple_datman(path: Path):
     subprocess.check_call(("datman", "init"), cwd=path)
 
     with path.joinpath("datman.toml").open("a") as file:
-        file.write(f"""
+        file.write(
+            f"""
 [source.srca]
 directory = "{path.joinpath("srca")}"
 hostname = "{get_hostname()}"
@@ -19,4 +20,5 @@ hostname = "{get_hostname()}"
 [piles.main]
 path = "main"
 included_labels = ["precious"]
-        """)
+        """
+        )
diff --git a/testsuite/helpers/yama_helpers.py b/testsuite/helpers/yama_helpers.py
index 80d314f..315c11a 100644
--- a/testsuite/helpers/yama_helpers.py
+++ b/testsuite/helpers/yama_helpers.py
@@ -6,4 +6,4 @@ from pathlib import Path
 def set_up_simple_yama(path: Path):
     path.mkdir(exist_ok=True)
     subprocess.check_call(("yama", "init"), cwd=path)
-    shutil.copyfile("../example_zstd.dict", path.joinpath("important_zstd.dict"))
\ No newline at end of file
+    shutil.copyfile("../example_zstd.dict", path.joinpath("important_zstd.dict"))
diff --git a/testsuite/scripts-dev/lint.sh b/testsuite/scripts-dev/lint.sh
new file mode 100755
index 0000000..bfbe962
--- /dev/null
+++ b/testsuite/scripts-dev/lint.sh
@@ -0,0 +1,18 @@
+#!/bin/sh -eu
+
+if [ $# -ge 1 ]
+then
+  files=$*
+else
+  files="setup.py datmantests helpers yamatests"
+fi
+
+echo "Linting these locations: $files"
+echo " ===== Running isort ===== "
+isort $files
+echo " ===== Running black ===== "
+black $files
+echo " ===== Running flake8 ===== "
+flake8 $files
+#echo " ===== Running mypy ===== "
+#mypy $files
diff --git a/testsuite/setup.cfg b/testsuite/setup.cfg
new file mode 100644
index 0000000..549f8ad
--- /dev/null
+++ b/testsuite/setup.cfg
@@ -0,0 +1,21 @@
+[flake8]
+# line length defaulted to by black
+max-line-length = 88
+
+# see https://pycodestyle.readthedocs.io/en/latest/intro.html#error-codes
+# for error codes. The ones we ignore are:
+#  W503: line break before binary operator
+#  W504: line break after binary operator
+#  E203: whitespace before ':' (which is contrary to pep8?)
+# (this is a subset of those ignored in Synapse)
+ignore=W503,W504,E203
+
+[isort]
+line_length = 88
+sections=FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,TESTS,LOCALFOLDER
+default_section=THIRDPARTY
+known_first_party=scone
+known_tests=tests
+multi_line_output=3
+include_trailing_comma=true
+combine_as_imports=true
diff --git a/testsuite/setup.py b/testsuite/setup.py
index 8ca05cc..cd07068 100644
--- a/testsuite/setup.py
+++ b/testsuite/setup.py
@@ -6,7 +6,7 @@ import os
 import sys
 from shutil import rmtree
 
-from setuptools import find_packages, setup, Command
+from setuptools import Command, find_packages, setup
 
 # Package meta-data.
 NAME = "yamadatmantestsuite"
@@ -18,21 +18,11 @@ REQUIRES_PYTHON = ">=3.9.0"
 VERSION = "0.0.0"
 
 # What packages are required for this module to be executed?
-REQUIRED = [
-    "green",
-    "attrs",
-    "immutabledict"
-]
+REQUIRED = ["green", "attrs", "immutabledict"]
 
 
 # What packages are optional?
-EXTRAS = {
-    "dev": [
-        "black==21.7b0",
-        "flake8==3.9.2",
-        "isort==5.9.2"
-    ]
-}
+EXTRAS = {"dev": ["black==21.7b0", "flake8==3.9.2", "isort==5.9.2"]}
 
 # The rest you shouldn't have to touch too much :)
 # ------------------------------------------------
diff --git a/testsuite/yamatests/test_store_and_retrieve.py b/testsuite/yamatests/test_store_and_retrieve.py
index 7155edc..b544e32 100644
--- a/testsuite/yamatests/test_store_and_retrieve.py
+++ b/testsuite/yamatests/test_store_and_retrieve.py
@@ -1,6 +1,3 @@
-from unittest import TestCase
-
-
 # class TestStoreAndRetrieve(TestCase):
 #     def test_store_and_retrieve(self):
-#
\ No newline at end of file
+#