Fixed all pep8 warnings

tests/database/test_products.py

@@ -22,7 +22,8 @@ def test_create_product():
     db = ProductController()
     db.create(product)
 
-# Tests the database maintains integrity when we try and add a product with the same details
+# Tests the database maintains integrity when we try
+# and add a product with the same details
 
 
 @pytest.mark.skip
@@ -40,7 +41,7 @@ def test_search_category():
     # Check each category for correct amount of test products
     assert len(db.read_all("Car Parts")) == 9 + 1  # Added in previous test
     assert len(db.read_all("Books")) == 9
-    assert db.read_all("Phones") == None
+    assert db.read_all("Phones") is None
 
 
 # Tests that products can be refined by search term
@@ -51,7 +52,7 @@ def test_search_term():
     assert len(db.read_all(search_term="test")) == 33
     assert len(db.read_all("Car Parts", "test")) == 9
     assert len(db.read_all(search_term="product")) == 1
-    assert db.read_all(search_term="not_test") == None
+    assert db.read_all(search_term="not_test") is None
 
 # Test we the same product details get returned from the database
 

tests/database/test_users.py

@@ -29,7 +29,8 @@ def test_create_user():
     db = UserController()
     db.create(customer)
 
-# Tests the database maintains integrity when we try and add a user with the same details
+# Tests the database maintains integrity when we try
+# and add a user with the same details
 
 
 def test_duplicate_user():