1 files changed, 41 insertions, 0 deletions
diff --git a/toolkit/components/printing/tests/browser_print_copies.js b/toolkit/components/printing/tests/browser_print_copies.js
new file mode 100644
index 0000000000..083dd6e5ee
--- /dev/null
+++ b/toolkit/components/printing/tests/browser_print_copies.js
@@ -0,0 +1,41 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function testCopyError() {
+  await PrintHelper.withTestPage(async helper => {
+    helper.addMockPrinter("A printer");
+    await SpecialPowers.pushPrefEnv({
+      set: [["print_printer", "A printer"]],
+    });
+
+    await helper.startPrint();
+
+    let copyInput = helper.get("copies-count");
+    let destinationPicker = helper.get("printer-picker");
+
+    await helper.assertSettingsChanged(
+      { numCopies: 1 },
+      { numCopies: 10000 },
+      async () => {
+        helper.text(copyInput, "10000000000");
+
+        // Initially, the copies will be more than the max.
+        is(copyInput.checkValidity(), false, "Copy count is invalid");
+        is(
+          destinationPicker.disabled,
+          false,
+          "Destination picker is still enabled"
+        );
+
+        // When the settings event happens, copies resolves to max.
+        await helper.waitForSettingsEvent();
+        is(copyInput.value, "10000", "Copies gets set to max value");
+        is(copyInput.checkValidity(), true, "Copy count is valid again");
+      }
+    );
+
+    await helper.closeDialog();
+  });
+});