diff --git a/tests/test_flake8.py b/tests/test_flake8.py
index 56720af..144d8c7 100644
--- a/tests/test_flake8.py
+++ b/tests/test_flake8.py
@@ -1,6 +1,5 @@
 """Unit tests for flake8 pytest plugin."""
 
-
 import pathlib
 
 import py
@@ -54,13 +53,11 @@ def test_default_flake8_ignores(self, testdir):
         testdir.tmpdir.ensure("tests/hello.py")
         result = testdir.runpytest("--flake8", "-s")
         result.assert_outcomes(passed=2)
-        result.stdout.fnmatch_lines(
-            [
-                "*collected 2*",
-                "*xy.py .*",
-                "*2 passed*",
-            ]
-        )
+        result.stdout.fnmatch_lines([
+            "*collected 2*",
+            "*xy.py .*",
+            "*2 passed*",
+        ])
 
     def test_ignores_all(self, testdir):
         """Verify success when all errors are ignored."""
@@ -75,25 +72,21 @@ def test_ignores_all(self, testdir):
         testdir.tmpdir.ensure("tests/hello.py")
         result = testdir.runpytest("--flake8", "-s")
         result.assert_outcomes(passed=1)
-        result.stdout.fnmatch_lines(
-            [
-                "*collected 1*",
-                "*xy.py .*",
-                "*1 passed*",
-            ]
-        )
+        result.stdout.fnmatch_lines([
+            "*collected 1*",
+            "*xy.py .*",
+            "*1 passed*",
+        ])
 
     def test_w293w292(self, testdir, example):
         result = testdir.runpytest(
             "--flake8",
         )
-        result.stdout.fnmatch_lines(
-            [
-                # "*plugins*flake8*",
-                "*W293*",
-                "*W292*",
-            ]
-        )
+        result.stdout.fnmatch_lines([
+            # "*plugins*flake8*",
+            "*W293*",
+            "*W292*",
+        ])
         result.assert_outcomes(failed=1)
 
     def test_mtime_caching(self, testdir, example):
@@ -101,23 +94,19 @@ def test_mtime_caching(self, testdir, example):
         result = testdir.runpytest(
             "--flake8",
         )
-        result.stdout.fnmatch_lines(
-            [
-                # "*plugins*flake8*",
-                "*W293*",
-                "*W292*",
-            ]
-        )
+        result.stdout.fnmatch_lines([
+            # "*plugins*flake8*",
+            "*W293*",
+            "*W292*",
+        ])
         result.assert_outcomes(passed=1, failed=1)
         result = testdir.runpytest(
             "--flake8",
         )
-        result.stdout.fnmatch_lines(
-            [
-                "*W293*",
-                "*W292*",
-            ]
-        )
+        result.stdout.fnmatch_lines([
+            "*W293*",
+            "*W292*",
+        ])
         result.assert_outcomes(skipped=1, failed=1)
         testdir.makeini("""
             [pytest]
@@ -144,11 +133,9 @@ def f():
     """,
     )
     result = testdir.runpytest("--flake8")
-    result.stdout.fnmatch_lines(
-        [
-            "*collected 1*",
-        ]
-    )
+    result.stdout.fnmatch_lines([
+        "*collected 1*",
+    ])
     result.assert_outcomes(failed=1)
 
 
@@ -159,11 +146,9 @@ class AClass:
     """)
     p = p.write(p.read() + "\n")
     result = testdir.runpytest("--flake8", "--verbose")
-    result.stdout.fnmatch_lines(
-        [
-            "*test_ok_verbose*",
-        ]
-    )
+    result.stdout.fnmatch_lines([
+        "*test_ok_verbose*",
+    ])
     result.assert_outcomes(passed=1)
 
 
@@ -174,12 +159,10 @@ def test_hello():
             #
     """)
     result = testdir.runpytest("--flake8", "-mflake8")
-    result.stdout.fnmatch_lines(
-        [
-            "*E201*",
-            "*1 failed*",
-        ]
-    )
+    result.stdout.fnmatch_lines([
+        "*E201*",
+        "*1 failed*",
+    ])
     result.assert_outcomes(failed=1)