1 files changed, 42 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_loadURI_postdata.js b/docshell/test/browser/browser_loadURI_postdata.js
new file mode 100644
index 0000000000..b2dbb7a641
--- /dev/null
+++ b/docshell/test/browser/browser_loadURI_postdata.js
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const gPostData = "postdata=true";
+const gUrl =
+  "http://mochi.test:8888/browser/docshell/test/browser/print_postdata.sjs";
+
+add_task(async function test_loadURI_persists_postData() {
+  waitForExplicitFinish();
+
+  let tab = (gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser));
+  registerCleanupFunction(function () {
+    gBrowser.removeTab(tab);
+  });
+
+  var dataStream = Cc["@mozilla.org/io/string-input-stream;1"].createInstance(
+    Ci.nsIStringInputStream
+  );
+  dataStream.data = gPostData;
+
+  var postStream = Cc[
+    "@mozilla.org/network/mime-input-stream;1"
+  ].createInstance(Ci.nsIMIMEInputStream);
+  postStream.addHeader("Content-Type", "application/x-www-form-urlencoded");
+  postStream.setData(dataStream);
+  var systemPrincipal = Cc["@mozilla.org/systemprincipal;1"].getService(
+    Ci.nsIPrincipal
+  );
+
+  tab.linkedBrowser.loadURI(Services.io.newURI(gUrl), {
+    triggeringPrincipal: systemPrincipal,
+    postData: postStream,
+  });
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, gUrl);
+  let body = await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [],
+    () => content.document.body.textContent
+  );
+  is(body, gPostData, "post data was submitted correctly");
+  finish();
+});