--- a/toolkit/components/passwordmgr/test/unit/test_isOriginMatching.js
+++ b/toolkit/components/passwordmgr/test/unit/test_isOriginMatching.js
@@ -6,16 +6,27 @@
 
 add_task(function test_isOriginMatching() {
   let testcases = [
     // Index 0 holds the expected return value followed by arguments to isOriginMatching.
     [true, "http://example.com", "http://example.com"],
     [true, "http://example.com:8080", "http://example.com:8080"],
     [true, "https://example.com", "https://example.com"],
     [true, "https://example.com:8443", "https://example.com:8443"],
+
+    // The formActionOrigin can be "javascript:"
+    [true, "javascript:", "javascript:"],
+    [false, "javascript:", "http://example.com"],
+    [false, "http://example.com", "javascript:"],
+
+    // HTTP Auth. logins have a null formActionOrigin
+    [true, null, null],
+    [false, null, "http://example.com"],
+    [false, "http://example.com", null],
+
     [false, "http://example.com", "http://mozilla.org"],
     [false, "http://example.com", "http://example.com:8080"],
     [false, "https://example.com", "http://example.com"],
     [false, "https://example.com", "https://mozilla.org"],
     [false, "http://example.com", "http://sub.example.com"],
     [false, "https://example.com", "https://sub.example.com"],
     [false, "http://example.com", "https://example.com:8443"],
     [false, "http://example.com:8080", "http://example.com:8081"],
@@ -137,16 +148,28 @@ add_task(function test_isOriginMatching(
       { acceptDifferentSubdomains: false },
     ],
     [
       false,
       "http://sub.example.com",
       "http://sub.example.mozilla.com",
       { acceptDifferentSubdomains: false },
     ],
+
+    // HTTP Auth. logins have a null formActionOrigin
+    [
+      false,
+      null,
+      "http://example.com",
+      {
+        acceptDifferentSubdomains: false,
+        acceptWildcardMatch: true,
+        schemeUpgrades: true,
+      },
+    ],
   ];
   for (let tc of testcases) {
     let expected = tc.shift();
     Assert.strictEqual(
       LoginHelper.isOriginMatching(...tc),
       expected,
       "Check " + JSON.stringify(tc)
     );