1 files changed, 15 insertions, 0 deletions
diff --git a/toolkit/components/autocomplete/tests/unit/test_insertMatchAt.js b/toolkit/components/autocomplete/tests/unit/test_insertMatchAt.js
new file mode 100644
index 0000000000..cef3fb9683
--- /dev/null
+++ b/toolkit/components/autocomplete/tests/unit/test_insertMatchAt.js
@@ -0,0 +1,15 @@
+function run_test() {
+  let result = Cc["@mozilla.org/autocomplete/simple-result;1"].createInstance(
+    Ci.nsIAutoCompleteSimpleResult
+  );
+  result.appendMatch("a", "");
+  result.appendMatch("c", "");
+  result.insertMatchAt(1, "b", "");
+  result.insertMatchAt(3, "d", "");
+
+  Assert.equal(result.matchCount, 4);
+  Assert.equal(result.getValueAt(0), "a");
+  Assert.equal(result.getValueAt(1), "b");
+  Assert.equal(result.getValueAt(2), "c");
+  Assert.equal(result.getValueAt(3), "d");
+}