1 files changed, 39 insertions, 0 deletions
diff --git a/comm/mailnews/mime/test/unit/test_EncodeMimePartIIStr_UTF8.js b/comm/mailnews/mime/test/unit/test_EncodeMimePartIIStr_UTF8.js
new file mode 100644
index 0000000000..71d31da9ac
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+++ b/comm/mailnews/mime/test/unit/test_EncodeMimePartIIStr_UTF8.js
@@ -0,0 +1,39 @@
+/* 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/. */
+
+// This tests minimal mime encoding fixed in bug 458685
+
+var { MailServices } = ChromeUtils.import(
+  "resource:///modules/MailServices.jsm"
+);
+
+function run_test() {
+  var i;
+
+  var checks = [
+    ["", false, ""],
+    ["\u0436", false, "=?UTF-8?B?0LY=?="], // CYRILLIC SMALL LETTER ZHE
+    ["IamASCII", false, "IamASCII"],
+    // Although an invalid email, we shouldn't crash on it (bug 479206)
+    ["crash test@foo.invalid>", true, '"crash test"@foo.invalid'],
+    [
+      "MXR now displays links to Github log & Blame for\r\n Gaia/Rust/Servo",
+      false,
+      "MXR now displays links to Github log & Blame for\r\n Gaia/Rust/Servo",
+    ],
+    ["-----------------------:", false, "-----------------------:"],
+  ];
+
+  for (i = 0; i < checks.length; ++i) {
+    Assert.equal(
+      MailServices.mimeConverter.encodeMimePartIIStr_UTF8(
+        checks[i][0],
+        checks[i][1],
+        "Subject".length,
+        72
+      ),
+      checks[i][2]
+    );
+  }
+}