1 files changed, 69 insertions, 0 deletions
diff --git a/layout/base/tests/chrome/test_get_printer_paper_sizes.html b/layout/base/tests/chrome/test_get_printer_paper_sizes.html
new file mode 100644
index 0000000000..4ebe462ac6
--- /dev/null
+++ b/layout/base/tests/chrome/test_get_printer_paper_sizes.html
@@ -0,0 +1,69 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+</head>
+<body onload="run()">
+<script type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+async function run() {
+  try {
+    let printerList = Cc["@mozilla.org/gfx/printerlist;1"].getService(
+      Ci.nsIPrinterList
+    );
+    let printers = await printerList.printers;
+    if (printers.length == 0) {
+      ok(true, "There were no printers to iterate through.");
+    }
+
+    for (let printer of printers) {
+      printer.QueryInterface(Ci.nsIPrinter);
+      is(typeof(printer.name), 'string', "Printer name should be a string.");
+      isnot(printer.name, "", "Printer name should never be empty.");
+
+      info(printer.name);
+      info("duplex(" + printer.supportsDuplex + ")");
+
+      let printerInfo = await printer.printerInfo;
+      for (let paper of printerInfo.paperList) {
+        paper.QueryInterface(Ci.nsIPaper);
+
+        info(`${paper.name}: ${paper.width}x${paper.height}`);
+
+        is(typeof(paper.name), 'string', "Paper name should be a string.");
+        isnot(paper.name, "", "Paper name should never be empty.");
+
+        is(typeof(paper.width), 'number', "Paper width should be a number.");
+        ok(paper.width > 0.0, "Paper width should be greater than zero.");
+
+        is(typeof(paper.height), 'number', "Paper height should be a number.");
+        ok(paper.height > 0.0, "Paper height should be greater than zero.");
+
+        let margin = await paper.unwriteableMargin;
+        margin.QueryInterface(Ci.nsIPaperMargin);
+
+        info(`with margin: ${margin.top} ${margin.right} ${margin.bottom} ${margin.left}`);
+
+        is(typeof(margin.top),    'number', "Paper unwriteable margin top should be a number.");
+        is(typeof(margin.right),  'number', "Paper unwriteable margin right should be a number.");
+        is(typeof(margin.bottom), 'number', "Paper unwriteable margin bottom should be a number.");
+        is(typeof(margin.left),   'number', "Paper unwriteable margin left should be a number.");
+
+        ok(margin.top    >= 0.0, "Paper unwriteable margin top should be greater than or equal to zero.");
+        ok(margin.right  >= 0.0, "Paper unwriteable margin right should be greater than or equal to zero.");
+        ok(margin.bottom >= 0.0, "Paper unwriteable bottom right should be greater than or equal to zero.");
+        ok(margin.left   >= 0.0, "Paper unwriteable margin left should be greater than or equal to zero.");
+      }
+    }
+  } catch (e) {
+    ok(false, `Shouldn't throw: ${e}`);
+    console.error(e);
+  }
+  SimpleTest.finish();
+}
+
+</script>
+</body>
+</html>