fixup! Normalize URL paths: convert /.//p, /..//p, and //p to p

url/tests/unit.rs

@@ -1422,3 +1422,39 @@ fn test_can_be_a_base_with_path_segments_mut() {
         .collect();
     assert_eq!(segments, vec!["", "not-a-host"]);
 }
+
+#[test]
+fn test_fuzzing_uri_failures() {
+    use url::quirks;
+    let mut url = Url::parse("data:/.dummy.path").unwrap();
+    assert!(!url.cannot_be_a_base());
+
+    url.set_path(".dummy.path");
+    assert_eq!(url.as_str(), "data:/.dummy.path");
+    assert_eq!(url.path(), "/.dummy.path");
+
+    url.path_segments_mut()
+        .expect("should have path segments")
+        .push(".another.dummy.path");
+    assert_eq!(url.as_str(), "data:/.dummy.path/.another.dummy.path");
+    assert_eq!(url.path(), "/.dummy.path/.another.dummy.path");
+
+    url = Url::parse("web+demo:/").unwrap();
+    assert!(!url.cannot_be_a_base());
+
+    url.set_path("//.dummy.path");
+    assert_eq!(url.path(), "//.dummy.path");
+
+    let segments: Vec<_> = url
+        .path_segments()
+        .expect("should have path segments")
+        .collect();
+
+    assert_eq!(segments, vec!["", ".dummy.path"]);
+
+    assert_eq!(url.as_str(), "web+demo:/.//.dummy.path");
+    quirks::set_hostname(&mut url, ".dummy.host").unwrap();
+    assert_eq!(url.as_str(), "web+demo://.dummy.host//.dummy.path");
+    quirks::set_hostname(&mut url, "").unwrap();
+    assert_eq!(url.as_str(), "web+demo:////.dummy.path");
+}