diff --git a/tests/check_executables_have_shebangs_test.py b/tests/check_executables_have_shebangs_test.py
index 0e28986..0cb9dcf 100644
--- a/tests/check_executables_have_shebangs_test.py
+++ b/tests/check_executables_have_shebangs_test.py
@@ -7,26 +7,30 @@
 from pre_commit_hooks.check_executables_have_shebangs import main
 
 
-@pytest.mark.parametrize('content', (
-    b'#!/bin/bash\nhello world\n',
-    b'#!/usr/bin/env python3.6',
-    b'#!python',
-    '#!☃'.encode('UTF-8'),
-))
+@pytest.mark.parametrize(
+    'content', (
+        b'#!/bin/bash\nhello world\n',
+        b'#!/usr/bin/env python3.6',
+        b'#!python',
+        '#!☃'.encode('UTF-8'),
+    ),
+)
 def test_has_shebang(content, tmpdir):
     path = tmpdir.join('path')
     path.write(content, 'wb')
     assert main((path.strpath,)) == 0
 
 
-@pytest.mark.parametrize('content', (
-    b'',
-    b' #!python\n',
-    b'\n#!python\n',
-    b'python\n',
-    '☃'.encode('UTF-8'),
+@pytest.mark.parametrize(
+    'content', (
+        b'',
+        b' #!python\n',
+        b'\n#!python\n',
+        b'python\n',
+        '☃'.encode('UTF-8'),
 
-))
+    ),
+)
 def test_bad_shebang(content, tmpdir, capsys):
     path = tmpdir.join('path')
     path.write(content, 'wb')
diff --git a/tests/check_json_test.py b/tests/check_json_test.py
index 996bfbb..6ba26c1 100644
--- a/tests/check_json_test.py
+++ b/tests/check_json_test.py
@@ -4,11 +4,13 @@
 from testing.util import get_resource_path
 
 
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('bad_json.notjson', 1),
-    ('bad_json_latin1.nonjson', 1),
-    ('ok_json.json', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('bad_json.notjson', 1),
+        ('bad_json_latin1.nonjson', 1),
+        ('ok_json.json', 0),
+    ),
+)
 def test_check_json(capsys, filename, expected_retval):
     ret = check_json([get_resource_path(filename)])
     assert ret == expected_retval
diff --git a/tests/check_symlinks_test.py b/tests/check_symlinks_test.py
index 4b11e71..19bb5b4 100644
--- a/tests/check_symlinks_test.py
+++ b/tests/check_symlinks_test.py
@@ -7,10 +7,12 @@
 
 
 @pytest.mark.xfail(os.name == 'nt', reason='No symlink support on windows')
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('broken_symlink', 1),
-    ('working_symlink', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('broken_symlink', 1),
+        ('working_symlink', 0),
+    ),
+)
 def test_check_symlinks(filename, expected_retval):
     ret = check_symlinks([get_resource_path(filename)])
     assert ret == expected_retval
diff --git a/tests/check_xml_test.py b/tests/check_xml_test.py
index 99b0902..84e365d 100644
--- a/tests/check_xml_test.py
+++ b/tests/check_xml_test.py
@@ -4,10 +4,12 @@
 from testing.util import get_resource_path
 
 
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('bad_xml.notxml', 1),
-    ('ok_xml.xml', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('bad_xml.notxml', 1),
+        ('ok_xml.xml', 0),
+    ),
+)
 def test_check_xml(filename, expected_retval):
     ret = check_xml([get_resource_path(filename)])
     assert ret == expected_retval
diff --git a/tests/check_yaml_test.py b/tests/check_yaml_test.py
index c145fdc..73d6593 100644
--- a/tests/check_yaml_test.py
+++ b/tests/check_yaml_test.py
@@ -4,10 +4,12 @@
 from testing.util import get_resource_path
 
 
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('bad_yaml.notyaml', 1),
-    ('ok_yaml.yaml', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('bad_yaml.notyaml', 1),
+        ('ok_yaml.yaml', 0),
+    ),
+)
 def test_check_yaml(filename, expected_retval):
     ret = check_yaml([get_resource_path(filename)])
     assert ret == expected_retval
diff --git a/tests/debug_statement_hook_test.py b/tests/debug_statement_hook_test.py
index 7891eac..6d8d7d8 100644
--- a/tests/debug_statement_hook_test.py
+++ b/tests/debug_statement_hook_test.py
@@ -10,30 +10,36 @@
 
 @pytest.fixture
 def ast_with_no_debug_imports():
-    return ast.parse("""
+    return ast.parse(
+        """
 import foo
 import bar
 import baz
 from foo import bar
-""")
+""",
+    )
 
 
 @pytest.fixture
 def ast_with_debug_import_form_1():
-    return ast.parse("""
+    return ast.parse(
+        """
 
 import ipdb; ipdb.set_trace()
 
-""")
+""",
+    )
 
 
 @pytest.fixture
 def ast_with_debug_import_form_2():
-    return ast.parse("""
+    return ast.parse(
+        """
 
 from pudb import set_trace; set_trace()
 
-""")
+""",
+    )
 
 
 def test_returns_no_debug_statements(ast_with_no_debug_imports):
diff --git a/tests/detect_aws_credentials_test.py b/tests/detect_aws_credentials_test.py
index beb382f..978e9b0 100644
--- a/tests/detect_aws_credentials_test.py
+++ b/tests/detect_aws_credentials_test.py
@@ -69,8 +69,10 @@
             {'z2rpgs5uit782eapz5l1z0y2lurtsyyk6hcfozlb'},
         ),
         ('aws_config_with_session_token.ini', {'foo'}),
-        ('aws_config_with_secret_and_session_token.ini',
-         {'z2rpgs5uit782eapz5l1z0y2lurtsyyk6hcfozlb', 'foo'}),
+        (
+            'aws_config_with_secret_and_session_token.ini',
+            {'z2rpgs5uit782eapz5l1z0y2lurtsyyk6hcfozlb', 'foo'},
+        ),
         (
             'aws_config_with_multiple_sections.ini',
             {
diff --git a/tests/pretty_format_json_test.py b/tests/pretty_format_json_test.py
index 62e37f1..eeef65b 100644
--- a/tests/pretty_format_json_test.py
+++ b/tests/pretty_format_json_test.py
@@ -17,35 +17,41 @@
         parse_indent('-2')
 
 
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('not_pretty_formatted_json.json', 1),
-    ('unsorted_pretty_formatted_json.json', 1),
-    ('non_ascii_pretty_formatted_json.json', 1),
-    ('pretty_formatted_json.json', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('not_pretty_formatted_json.json', 1),
+        ('unsorted_pretty_formatted_json.json', 1),
+        ('non_ascii_pretty_formatted_json.json', 1),
+        ('pretty_formatted_json.json', 0),
+    ),
+)
 def test_pretty_format_json(filename, expected_retval):
     ret = pretty_format_json([get_resource_path(filename)])
     assert ret == expected_retval
 
 
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('not_pretty_formatted_json.json', 1),
-    ('unsorted_pretty_formatted_json.json', 0),
-    ('non_ascii_pretty_formatted_json.json', 1),
-    ('pretty_formatted_json.json', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('not_pretty_formatted_json.json', 1),
+        ('unsorted_pretty_formatted_json.json', 0),
+        ('non_ascii_pretty_formatted_json.json', 1),
+        ('pretty_formatted_json.json', 0),
+    ),
+)
 def test_unsorted_pretty_format_json(filename, expected_retval):
     ret = pretty_format_json(['--no-sort-keys', get_resource_path(filename)])
     assert ret == expected_retval
 
 
-@pytest.mark.parametrize(('filename', 'expected_retval'), (
-    ('not_pretty_formatted_json.json', 1),
-    ('unsorted_pretty_formatted_json.json', 1),
-    ('non_ascii_pretty_formatted_json.json', 1),
-    ('pretty_formatted_json.json', 1),
-    ('tab_pretty_formatted_json.json', 0),
-))
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('not_pretty_formatted_json.json', 1),
+        ('unsorted_pretty_formatted_json.json', 1),
+        ('non_ascii_pretty_formatted_json.json', 1),
+        ('pretty_formatted_json.json', 1),
+        ('tab_pretty_formatted_json.json', 0),
+    ),
+)
 def test_tab_pretty_format_json(filename, expected_retval):
     ret = pretty_format_json(['--indent', '\t', get_resource_path(filename)])
     assert ret == expected_retval
diff --git a/tests/string_fixer_test.py b/tests/string_fixer_test.py
index 0429b95..a65213b 100644
--- a/tests/string_fixer_test.py
+++ b/tests/string_fixer_test.py
@@ -22,16 +22,20 @@
     # Docstring
     ('""" Foo """', '""" Foo """', 0),
     (
-        textwrap.dedent("""
+        textwrap.dedent(
+            """
         x = " \\
         foo \\
         "\n
-        """),
-        textwrap.dedent("""
+        """,
+        ),
+        textwrap.dedent(
+            """
         x = ' \\
         foo \\
         '\n
-        """),
+        """,
+        ),
         1,
     ),
     ('"foo""bar"', "'foo''bar'", 1),