1 files changed, 101 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_post_file.js b/netwerk/test/browser/browser_post_file.js
new file mode 100644
index 000000000..6c9fd7a2f
--- /dev/null
+++ b/netwerk/test/browser/browser_post_file.js
@@ -0,0 +1,101 @@
+/*
+ * Tests for bug 1241100: Post to local file should not overwrite the file.
+ */
+
+Components.utils.import("resource://gre/modules/osfile.jsm");
+
+function* createTestFile(filename, content) {
+  let path = OS.Path.join(OS.Constants.Path.tmpDir, filename);
+  yield OS.File.writeAtomic(path, content);
+  return path;
+}
+
+function* readFile(path) {
+  var array = yield OS.File.read(path);
+  var decoder = new TextDecoder();
+  return decoder.decode(array);
+}
+
+function frameScript() {
+  addMessageListener("Test:WaitForIFrame", function() {
+    var check = function() {
+      if (content) {
+        var frame = content.document.getElementById("frame");
+        if (frame) {
+          var okBox = frame.contentDocument.getElementById("action_file_ok");
+          if (okBox) {
+            sendAsyncMessage("Test:IFrameLoaded");
+            return;
+          }
+        }
+      }
+
+      setTimeout(check, 100);
+    };
+
+    check();
+  });
+}
+
+add_task(function*() {
+  var postFilename = "post_file.html";
+  var actionFilename = "action_file.html";
+
+  var postFileContent = `
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>post file</title>
+</head>
+<body onload="document.getElementById('form').submit();">
+<form id="form" action="${actionFilename}" method="post" enctype="text/plain" target="frame">
+<input type="hidden" name="foo" value="bar">
+<input type="submit">
+</form>
+<iframe id="frame" name="frame"></iframe>
+</body>
+</html>
+`;
+
+  var actionFileContent = `
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>action file</title>
+</head>
+<body>
+<div id="action_file_ok">ok</div>
+</body>
+</html>
+`;
+
+  var postPath = yield* createTestFile(postFilename, postFileContent);
+  var actionPath = yield* createTestFile(actionFilename, actionFileContent);
+
+  var postURI = OS.Path.toFileURI(postPath);
+
+  gBrowser.selectedTab = gBrowser.addTab(postURI);
+  let browser = gBrowser.selectedBrowser;
+  browser.messageManager.loadFrameScript("data:,(" + frameScript.toString() + ")();", true);
+  yield new Promise(resolve => {
+    let manager = browser.messageManager;
+
+    function listener() {
+      manager.removeMessageListener("Test:IFrameLoaded", listener);
+      resolve();
+    }
+
+    manager.addMessageListener("Test:IFrameLoaded", listener);
+    manager.sendAsyncMessage("Test:WaitForIFrame");
+  });
+
+  var actionFileContentAfter = yield* readFile(actionPath);
+  is(actionFileContentAfter, actionFileContent, "action file is not modified");
+
+  yield OS.File.remove(postPath);
+  yield OS.File.remove(actionPath);
+
+  gBrowser.removeCurrentTab();
+});