1 files changed, 43 insertions, 0 deletions
diff --git a/toolkit/components/printing/tests/browser_print_disabled.js b/toolkit/components/printing/tests/browser_print_disabled.js
new file mode 100644
index 0000000000..87315d5952
--- /dev/null
+++ b/toolkit/components/printing/tests/browser_print_disabled.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_setup(async function setup() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["print.enabled", false]],
+  });
+});
+
+add_task(async function test_print_commands_disabled() {
+  let printCommand = document.getElementById(`cmd_print`);
+  let printPreview = document.getElementById(`cmd_printPreviewToggle`);
+
+  is(
+    printCommand.getAttribute("disabled"),
+    "true",
+    "print command is disabled when print.enabled=false"
+  );
+  is(
+    printPreview.getAttribute("disabled"),
+    "true",
+    "print preview command is disabled when print.enabled=false"
+  );
+});
+
+add_task(async function test_window_print_disabled() {
+  await BrowserTestUtils.withNewTab("https://example.org/", async browser => {
+    await SpecialPowers.spawn(browser, [], function () {
+      content.window.print();
+    });
+
+    // When the print dialog is open, the main thread of our tab is blocked, so
+    // the failure mode of this test is a timeout caused by the print dialog never
+    // closing.
+
+    Assert.ok(
+      true,
+      "window.print doesn't do anything when print.enabled=false"
+    );
+  });
+});