1 files changed, 40 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug388281.js b/netwerk/test/unit/test_bug388281.js
new file mode 100644
index 0000000000..f72398e17e
--- /dev/null
+++ b/netwerk/test/unit/test_bug388281.js
@@ -0,0 +1,40 @@
+"use strict";
+
+function run_test() {
+  const ios = Services.io;
+
+  var uri = ios.newURI("http://foo.com/file.txt");
+  uri = uri
+    .mutate()
+    .setPort(90)
+    .finalize();
+  Assert.equal(uri.hostPort, "foo.com:90");
+
+  uri = ios.newURI("http://foo.com:10/file.txt");
+  uri = uri
+    .mutate()
+    .setPort(500)
+    .finalize();
+  Assert.equal(uri.hostPort, "foo.com:500");
+
+  uri = ios.newURI("http://foo.com:5000/file.txt");
+  uri = uri
+    .mutate()
+    .setPort(20)
+    .finalize();
+  Assert.equal(uri.hostPort, "foo.com:20");
+
+  uri = ios.newURI("http://foo.com:5000/file.txt");
+  uri = uri
+    .mutate()
+    .setPort(-1)
+    .finalize();
+  Assert.equal(uri.hostPort, "foo.com");
+
+  uri = ios.newURI("http://foo.com:5000/file.txt");
+  uri = uri
+    .mutate()
+    .setPort(80)
+    .finalize();
+  Assert.equal(uri.hostPort, "foo.com");
+}