1 files changed, 69 insertions, 0 deletions
diff --git a/toolkit/devtools/scratchpad/test/browser_scratchpad_falsy.js b/toolkit/devtools/scratchpad/test/browser_scratchpad_falsy.js
new file mode 100644
index 000000000..b81633d91
--- /dev/null
+++ b/toolkit/devtools/scratchpad/test/browser_scratchpad_falsy.js
@@ -0,0 +1,69 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* Bug 679467 */
+
+function test()
+{
+  waitForExplicitFinish();
+
+  gBrowser.selectedTab = gBrowser.addTab();
+  gBrowser.selectedBrowser.addEventListener("load", function onLoad() {
+    gBrowser.selectedBrowser.removeEventListener("load", onLoad, true);
+    openScratchpad(testFalsy);
+  }, true);
+
+  content.location = "data:text/html,<p>test falsy display() values in Scratchpad";
+}
+
+function testFalsy()
+{
+  let scratchpad = gScratchpadWindow.Scratchpad;
+  verifyFalsies(scratchpad).then(function() {
+    scratchpad.setBrowserContext();
+    verifyFalsies(scratchpad).then(finish);
+  });
+}
+
+
+function verifyFalsies(scratchpad)
+{
+  let tests = [{
+    method: "display",
+    code: "undefined",
+    result: "undefined\n/*\nundefined\n*/",
+    label: "undefined is displayed"
+  },
+  {
+    method: "display",
+    code: "false",
+    result: "false\n/*\nfalse\n*/",
+    label: "false is displayed"
+  },
+  {
+    method: "display",
+    code: "0",
+    result: "0\n/*\n0\n*/",
+    label: "0 is displayed"
+  },
+  {
+    method: "display",
+    code: "null",
+    result: "null\n/*\nnull\n*/",
+    label: "null is displayed"
+  },
+  {
+    method: "display",
+    code: "NaN",
+    result: "NaN\n/*\nNaN\n*/",
+    label: "NaN is displayed"
+  },
+  {
+    method: "display",
+    code: "''",
+    result: "''\n/*\n\n*/",
+    label: "the empty string is displayed"
+  }];
+
+  return runAsyncTests(scratchpad, tests);
+}