1 files changed, 35 insertions, 0 deletions
diff --git a/modules/libjar/zipwriter/test/unit/test_bug467740.js b/modules/libjar/zipwriter/test/unit/test_bug467740.js
new file mode 100644
index 0000000000..4108003bd3
--- /dev/null
+++ b/modules/libjar/zipwriter/test/unit/test_bug467740.js
@@ -0,0 +1,35 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+function run_test() {
+  // In this test we try to open some files that aren't archives:
+  //  - An empty file, that is certainly not an archive.
+  //  - A file that couldn't be mistaken for archive, since it is too small.
+  //  - A file that could be mistaken for archive, if we checked only the file
+  //     size, but is invalid since it contains no ZIP signature.
+  var invalidArchives = ["emptyfile.txt", "smallfile.txt", "test.png"];
+
+  invalidArchives.forEach(function (invalidArchive) {
+    // Get a reference to the invalid file
+    var invalidFile = do_get_file(DATA_DIR + invalidArchive);
+
+    // Opening the invalid file should fail (but not crash)
+    try {
+      zipW.open(invalidFile, PR_RDWR);
+      do_throw(
+        "Should have thrown NS_ERROR_FILE_CORRUPTED on " + invalidArchive + " !"
+      );
+    } catch (e) {
+      if (
+        !(
+          e instanceof Ci.nsIException && e.result == Cr.NS_ERROR_FILE_CORRUPTED
+        )
+      ) {
+        throw e;
+      }
+      // do nothing
+    }
+  });
+}