diff --git a/malicious-site-protection/README.md b/malicious-site-protection/README.md
index ac921ce..b71bca3 100644
--- a/malicious-site-protection/README.md
+++ b/malicious-site-protection/README.md
@@ -16,13 +16,14 @@ Test suite specific fields:
 
 - `featureName` - string - name of the privacy feature as defined in the config
 - `siteURL` - string - the URL of the site we are testing protections for
+- `canonicalURL` - string - the expected canonicalized URL
 - `expectBlock` - bool - true if expected to be blocked, false otherwise
 
 ## Pseudo-code implementation
 
 ### Block Test
 ```
-for $testSet in test.json
+for $testSet in block_tests.json
   loadReferenceHashPrefixes('hashPrefixes_reference.json')
   loadReferenceFilterSet('filterSet_reference.json')
 
@@ -37,6 +38,18 @@ for $testSet in test.json
     expect($blocked === $test.expectBlock)
 ```
 
+### Canonicalization Test
+for $testSet in canonicalization_tests.json
+  for $test in $testSet
+    if $test.exceptPlatforms includes 'current-platform'
+        skip
+
+    $canonicalURL = URL.canonicalize(
+        url=$test.siteURL,
+    )
+
+    expect($canonicalURL === $test.canonicalURL)
+
 ## Platform exceptions
 
 - Currently, malicious site protection is only available on the browser platforms:
diff --git a/malicious-site-protection/tests.json b/malicious-site-protection/block_tests.json
similarity index 62%
rename from malicious-site-protection/tests.json
rename to malicious-site-protection/block_tests.json
index 63916b1..55b1f83 100644
--- a/malicious-site-protection/tests.json
+++ b/malicious-site-protection/block_tests.json
@@ -136,83 +136,5 @@
                 ]
             }
         ]
-    },
-    "urlTests": {
-        "name": "Should normalize URLs",
-        "desc": "All browser platforms should sufficiently canonicalize URLs consitently.",
-        "tests": [
-            {
-                "name": "malware wildcard regex test",
-                "siteURL": "https://broken.third-party.site/path/to/resource#fragment",
-                "canonicalURL": "https://broken.third-party.site/path/to/resource",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "double slashes in path",
-                "siteURL": "https://broken.third-party.site//path//to//resource",
-                "canonicalURL": "https://broken.third-party.site/path/to/resource",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "spaces in path",
-                "siteURL": "https://broken.third-party.site/path/to/resource%20with%20spaces%20%20%20%20",
-                "canonicalURL": "https://broken.third-party.site/path/to/resource%20with%20spaces%20%20%20%20",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "encoded fragment",
-                "siteURL": "https://broken.third-party.site/path/to/resource%23encodedfragment",
-                "canonicalURL": "https://broken.third-party.site/path/to/resource%23encodedfragment",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "dot segments in path",
-                "siteURL": "https://broken.third-party.site/path/./to/./resource",
-                "canonicalURL": "https://broken.third-party.site/path/to/resource",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "spaces in path without trailing spaces",
-                "siteURL": "https://broken.third-party.site/path/to/resource%20with%20spaces",
-                "canonicalURL": "https://broken.third-party.site/path/to/resource%20with%20spaces",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "encoded dot segments in path",
-                "siteURL": "https://broken.third-party.site/path/to/%2E%2E/%2E%2E/resource",
-                "canonicalURL": "https://broken.third-party.site/resource",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            },
-            {
-                "name": "multiple encoded slashes in path",
-                "siteURL": "https://broken.third-party.site/path/to/%2F%2F%2F%2F%2F%2F%2F%2F%2F",
-                "canonicalURL": "https://broken.third-party.site/path/to",
-                "exceptPlatforms": [
-                    "web-extension",
-                    "safari-extension"
-                ]
-            }
-
     }
 }
\ No newline at end of file
diff --git a/malicious-site-protection/url_tests.json b/malicious-site-protection/url_tests.json
new file mode 100644
index 0000000..ba2de03
--- /dev/null
+++ b/malicious-site-protection/url_tests.json
@@ -0,0 +1,80 @@
+{
+    "urlTests": {
+        "name": "Should normalize URLs",
+        "desc": "All browser platforms should sufficiently canonicalize URLs consitently.",
+        "tests": [
+            {
+                "name": "fragment in URL",
+                "siteURL": "https://broken.third-party.site/path/to/resource#fragment",
+                "canonicalURL": "https://broken.third-party.site/path/to/resource",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "double slashes in path",
+                "siteURL": "https://broken.third-party.site//path//to//resource",
+                "canonicalURL": "https://broken.third-party.site/path/to/resource",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "trailing spaces in path",
+                "siteURL": "https://broken.third-party.site/path/to/resource%20with%20spaces%20%20%20%20",
+                "canonicalURL": "https://broken.third-party.site/path/to/resource%20with%20spaces%20%20%20%20",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "encoded fragment",
+                "siteURL": "https://broken.third-party.site/path/to/resource%23encodedfragment",
+                "canonicalURL": "https://broken.third-party.site/path/to/resource%23encodedfragment",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "dot segments in path",
+                "siteURL": "https://broken.third-party.site/path/./to/./resource",
+                "canonicalURL": "https://broken.third-party.site/path/to/resource",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "spaces in path without trailing spaces",
+                "siteURL": "https://broken.third-party.site/path/to/resource%20with%20spaces",
+                "canonicalURL": "https://broken.third-party.site/path/to/resource%20with%20spaces",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "encoded dot segments in path",
+                "siteURL": "https://broken.third-party.site/path/to/%2E%2E/%2E%2E/resource",
+                "canonicalURL": "https://broken.third-party.site/resource",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            },
+            {
+                "name": "multiple encoded slashes in path",
+                "siteURL": "https://broken.third-party.site/path/to/%2F%2F%2F%2F%2F%2F%2F%2F%2F",
+                "canonicalURL": "https://broken.third-party.site/path/to",
+                "exceptPlatforms": [
+                    "web-extension",
+                    "safari-extension"
+                ]
+            }
+        ]
+    }
+}
\ No newline at end of file