1 files changed, 17 insertions, 13 deletions
diff --git a/components/script/dom/bindings/codegen/parser/tests/test_usvstring.py b/components/script/dom/bindings/codegen/parser/tests/test_usvstring.py
index 3a1369abd02..effede391cb 100644
--- a/components/script/dom/bindings/codegen/parser/tests/test_usvstring.py
+++ b/components/script/dom/bindings/codegen/parser/tests/test_usvstring.py
@@ -2,23 +2,27 @@
 
 import WebIDL
 
+
 def WebIDLTest(parser, harness):
-    parser.parse("""
+    parser.parse(
+        """
         interface TestUSVString {
           attribute USVString svs;
         };
-    """)
+    """
+    )
 
-    results = parser.finish();
+    results = parser.finish()
 
     harness.check(len(results), 1, "Should be one production")
-    harness.ok(isinstance(results[0], WebIDL.IDLInterface),
-               "Should be an IDLInterface")
+    harness.ok(isinstance(results[0], WebIDL.IDLInterface), "Should be an IDLInterface")
     iface = results[0]
-    harness.check(iface.identifier.QName(), "::TestUSVString",
-                  "Interface has the right QName")
-    harness.check(iface.identifier.name, "TestUSVString",
-                  "Interface has the right name")
+    harness.check(
+        iface.identifier.QName(), "::TestUSVString", "Interface has the right QName"
+    )
+    harness.check(
+        iface.identifier.name, "TestUSVString", "Interface has the right name"
+    )
     harness.check(iface.parent, None, "Interface has no parent")
 
     members = iface.members
@@ -26,11 +30,11 @@ def WebIDLTest(parser, harness):
 
     attr = members[0]
     harness.ok(isinstance(attr, WebIDL.IDLAttribute), "Should be an IDLAttribute")
-    harness.check(attr.identifier.QName(), "::TestUSVString::svs",
-                  "Attr has correct QName")
+    harness.check(
+        attr.identifier.QName(), "::TestUSVString::svs", "Attr has correct QName"
+    )
     harness.check(attr.identifier.name, "svs", "Attr has correct name")
-    harness.check(str(attr.type), "USVString",
-                  "Attr type is the correct name")
+    harness.check(str(attr.type), "USVString", "Attr type is the correct name")
     harness.ok(attr.type.isUSVString(), "Should be USVString type")
     harness.ok(attr.type.isString(), "Should be String collective type")
     harness.ok(not attr.type.isDOMString(), "Should be not be DOMString type")