diff --git a/tests/test_inbox.py b/tests/test_inbox.py
index 5bb3f28..b755fe5 100644
--- a/tests/test_inbox.py
+++ b/tests/test_inbox.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 """Test inbox route."""
+from demo.httpsig import HttpSignature
 
 
 def test_inbox_no_signature_key(client):
@@ -10,17 +11,29 @@ def test_inbox_no_signature_key(client):
 
 
 def test_inbox_signature_verify():
-    from demo.httpsig import HttpSignature
-
+    """Test inbox signature verify"""
     sig_str = """(request-target): post /inbox
 user-agent: Fediverse Application
 host: 127.0.0.1:5000
 date: Tue, 22 Feb 2022 00:00:00 GMT
 digest: SHA-256=pYx72lX8cxrG48M5a2YUZu1XsbfdI6bDm2QBnY3/ABo=
 content-type: application/activity+json"""
-    sig_header = 'keyId="http://127.0.0.1:8000#main-key",algorithm="rsa-sha256",headers="(request-target) user-agent host date digest content-type",signature="MxSPaNM2S1BnWlMVe0tPaTj4Z8nBSXHu5hvaQfN+Qo+LFVC8T/H8pLvE1DLxAE6IXyRg5xTkams9DS+O7GjEKotHoJuQxtpT5LzNzgliX3xyHd39Jy0jr2JOJmnlAPnUUeQDab3fkEWUkQROhcnL6rGOAGTasuie6Fhy+rNTcVh4HwkXt9uj321sa7kd0cWpsgtxzQyQ/2NRpfgxM9bEZCzddUVIIH1xng57GUiknkaDLhvn4OXWAgwh421i2AATB8eOGuOvR+LNmDofkK6HzWqru7W5cwzCOifCulJPAEN6rAhKOPbP76vKbaPlWcmsEgEOl8RLMjK2YjyWPupSCg=='
+    sig_header = 'keyId="http://127.0.0.1:8000#main-key",algorithm="rsa-sha256",headers="(reque \
+    st-target) user-agent host date digest content-type",signature="MxSPaNM2S1BnWlMVe0tPaTj4Z8n \
+    BSXHu5hvaQfN+Qo+LFVC8T/H8pLvE1DLxAE6IXyRg5xTkams9DS+O7GjEKotHoJuQxtpT5LzNzgliX3xyHd39Jy0jr2 \
+    JOJmnlAPnUUeQDab3fkEWUkQROhcnL6rGOAGTasuie6Fhy+rNTcVh4HwkXt9uj321sa7kd0cWpsgtxzQyQ/2NRpfgxM \
+    9bEZCzddUVIIH1xng57GUiknkaDLhvn4OXWAgwh421i2AATB8eOGuOvR+LNmDofkK6HzWqru7W5cwzCOifCulJPAEN6 \
+    rAhKOPbP76vKbaPlWcmsEgEOl8RLMjK2YjyWPupSCg=='
     sig_header = HttpSignature.parse_signature(sig_header)
-    pub_key = """-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxTsTLCVt+jGSaVO6c+iW\nqOXsO45vB31twWzpDYg0yWcwX6u3sjc3ZyfmzJrmD8/x0xqBEpt2e9eUWzXsbOej\nmG8lBo0z5a7FLbui+MWH2ZwIPdjtbV/dhsWREfhBw5QAuPWM2dOmyJzyI1WOIfiy\n9bOO8ZYdMeBx/D8fPDk3LRHF6l5RmzQmCkcQdF1zAI4d4HmxIoUnhc9CsFBMLxb6\nI6TSswT+GAWF5jM11Yva5Fm8aaV444vk7wobG17g2BLCr2qmRQb7KT0vvVCoakUV\nTNE56Bh6aTEa/64xT6+vuX/Vk7IauetI9z0FlR8n2I1VONTi37DgAJUhMljDe+Z4\nwwIDAQAB\n-----END PUBLIC KEY-----"""
+    pub_key = """-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxTsTLCVt+jGSaVO6c+iW
+qOXsO45vB31twWzpDYg0yWcwX6u3sjc3ZyfmzJrmD8/x0xqBEpt2e9eUWzXsbOej
+mG8lBo0z5a7FLbui+MWH2ZwIPdjtbV/dhsWREfhBw5QAuPWM2dOmyJzyI1WOIfiy
+9bOO8ZYdMeBx/D8fPDk3LRHF6l5RmzQmCkcQdF1zAI4d4HmxIoUnhc9CsFBMLxb6
+I6TSswT+GAWF5jM11Yva5Fm8aaV444vk7wobG17g2BLCr2qmRQb7KT0vvVCoakUV
+TNE56Bh6aTEa/64xT6+vuX/Vk7IauetI9z0FlR8n2I1VONTi37DgAJUhMljDe+Z4
+wwIDAQAB
+-----END PUBLIC KEY-----"""
 
     is_verify = HttpSignature.verify_signature(
         sig_str,
@@ -28,4 +41,4 @@ content-type: application/activity+json"""
         pub_key,
     )
 
-    assert is_verify == True
+    assert is_verify is True