1 files changed, 174 insertions, 0 deletions
diff --git a/toolkit/components/printing/tests/browser_print_duplex.js b/toolkit/components/printing/tests/browser_print_duplex.js
new file mode 100644
index 0000000000..5fa59f4672
--- /dev/null
+++ b/toolkit/components/printing/tests/browser_print_duplex.js
@@ -0,0 +1,174 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function testPDFPrinterIsNonDuplex() {
+  await PrintHelper.withTestPage(async helper => {
+    await helper.startPrint();
+    await helper.openMoreSettings();
+
+    is(
+      helper.settings.printerName,
+      "Mozilla Save to PDF",
+      "Mozilla Save to PDF is the current printer."
+    );
+
+    const duplexSection = helper.get("two-sided-printing");
+    ok(
+      duplexSection.hidden,
+      "The two-sided printing section should be hidden when the printer does not support duplex."
+    );
+
+    helper.assertSettingsMatch({ duplex: Ci.nsIPrintSettings.kSimplex });
+
+    await helper.closeDialog();
+  });
+});
+
+add_task(async function testToggleDuplexWithPortraitOrientation() {
+  const mockPrinterName = "DuplexWithPortrait";
+  await PrintHelper.withTestPage(async helper => {
+    const printer = helper.addMockPrinter(mockPrinterName);
+    printer.supportsDuplex = Promise.resolve(true);
+
+    await helper.startPrint();
+    await helper.dispatchSettingsChange({ printerName: mockPrinterName });
+    await helper.awaitAnimationFrame();
+    await helper.openMoreSettings();
+
+    is(
+      helper.settings.printerName,
+      mockPrinterName,
+      "The Fake Printer is current printer"
+    );
+
+    const duplexSection = helper.get("two-sided-printing");
+    ok(
+      !duplexSection.hidden,
+      "The two-sided printing section should not be hidden when the printer supports duplex."
+    );
+
+    helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kSimplex,
+    });
+
+    await helper.click(helper.get("duplex-enabled"));
+    helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kDuplexHorizontal,
+    });
+
+    await helper.click(helper.get("duplex-enabled"));
+    helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kSimplex,
+    });
+
+    await helper.closeDialog();
+  });
+});
+
+add_task(async function testToggleDuplexWithLandscapeOrientation() {
+  const mockPrinterName = "DuplexWithLandscape";
+  await PrintHelper.withTestPage(async helper => {
+    const printer = helper.addMockPrinter(mockPrinterName);
+    printer.supportsDuplex = Promise.resolve(true);
+
+    await helper.startPrint();
+    await helper.dispatchSettingsChange({ printerName: mockPrinterName });
+    await helper.awaitAnimationFrame();
+    await helper.openMoreSettings();
+
+    is(
+      helper.settings.printerName,
+      mockPrinterName,
+      "The Fake Printer is current printer"
+    );
+
+    const duplexSection = helper.get("two-sided-printing");
+    ok(
+      !duplexSection.hidden,
+      "The two-sided printing section should not be hidden when the printer supports duplex."
+    );
+
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kSimplex,
+    });
+
+    await helper.dispatchSettingsChange({ orientation: 1 });
+    await helper.awaitAnimationFrame();
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kLandscapeOrientation,
+      duplex: Ci.nsIPrintSettings.kSimplex,
+    });
+
+    await helper.click(helper.get("duplex-enabled"));
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kLandscapeOrientation,
+      duplex: Ci.nsIPrintSettings.kDuplexHorizontal,
+    });
+
+    await helper.click(helper.get("duplex-enabled"));
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kLandscapeOrientation,
+      duplex: Ci.nsIPrintSettings.kSimplex,
+    });
+
+    await helper.closeDialog();
+  });
+});
+
+add_task(async function testSwitchOrientationWithDuplexEnabled() {
+  const mockPrinterName = "ToggleOrientationPrinter";
+  await PrintHelper.withTestPage(async helper => {
+    const printer = helper.addMockPrinter(mockPrinterName);
+    printer.supportsDuplex = Promise.resolve(true);
+
+    await helper.startPrint();
+    await helper.dispatchSettingsChange({ printerName: mockPrinterName });
+    await helper.awaitAnimationFrame();
+    await helper.openMoreSettings();
+
+    is(
+      helper.settings.printerName,
+      mockPrinterName,
+      "The Fake Printer is current printer"
+    );
+
+    const duplexSection = helper.get("two-sided-printing");
+    ok(
+      !duplexSection.hidden,
+      "The two-sided printing section should not be hidden when the printer supports duplex."
+    );
+
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kSimplex,
+    });
+
+    await helper.click(helper.get("duplex-enabled"));
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kDuplexHorizontal,
+    });
+
+    await helper.dispatchSettingsChange({ orientation: 1 });
+    await helper.awaitAnimationFrame();
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kLandscapeOrientation,
+      duplex: Ci.nsIPrintSettings.kDuplexHorizontal,
+    });
+
+    await helper.dispatchSettingsChange({ orientation: 0 });
+    await helper.awaitAnimationFrame();
+    await helper.assertSettingsMatch({
+      orientation: Ci.nsIPrintSettings.kPortraitOrientation,
+      duplex: Ci.nsIPrintSettings.kDuplexHorizontal,
+    });
+
+    await helper.closeDialog();
+  });
+});