1 files changed, 17 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_hostnameIsSharedIPAddress.js b/netwerk/test/unit/test_hostnameIsSharedIPAddress.js
new file mode 100644
index 0000000000..c3eaeabc0e
--- /dev/null
+++ b/netwerk/test/unit/test_hostnameIsSharedIPAddress.js
@@ -0,0 +1,17 @@
+"use strict";
+
+function run_test() {
+  let testURIs = [
+    // 100.64/10 prefix (RFC 6598)
+    ["http://100.63.255.254", false],
+    ["http://100.64.0.0", true],
+    ["http://100.91.63.42", true],
+    ["http://100.127.255.254", true],
+    ["http://100.128.0.0", false],
+  ];
+
+  for (let [uri, isShared] of testURIs) {
+    let nsuri = Services.io.newURI(uri);
+    equal(isShared, Services.io.hostnameIsSharedIPAddress(nsuri));
+  }
+}