1 files changed, 50 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser_webconsole_console_trace_duplicates.js b/devtools/client/webconsole/test/browser_webconsole_console_trace_duplicates.js
new file mode 100644
index 000000000..e1c6f966e
--- /dev/null
+++ b/devtools/client/webconsole/test/browser_webconsole_console_trace_duplicates.js
@@ -0,0 +1,50 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+function test() {
+  const TEST_URI = "http://example.com/browser/devtools/client/webconsole/" +
+                   "test/test-bug_939783_console_trace_duplicates.html";
+
+  Task.spawn(runner).then(finishTest);
+
+  function* runner() {
+    const {tab} = yield loadTab("data:text/html;charset=utf8,<p>hello");
+    const hud = yield openConsole(tab);
+
+    BrowserTestUtils.loadURI(gBrowser.selectedBrowser, TEST_URI);
+
+    // NB: Now that stack frames include a column number multiple invocations
+    //     on the same line are considered unique. ie:
+    //       |foo(); foo();|
+    //     will generate two distinct trace entries.
+    yield waitForMessages({
+      webconsole: hud,
+      messages: [{
+        name: "console.trace output for foo1()",
+        text: "foo1",
+        consoleTrace: {
+          file: "test-bug_939783_console_trace_duplicates.html",
+          fn: "foo3",
+        },
+      }, {
+        name: "console.trace output for foo1()",
+        text: "foo1",
+        consoleTrace: {
+          file: "test-bug_939783_console_trace_duplicates.html",
+          fn: "foo3",
+        },
+      }, {
+        name: "console.trace output for foo1b()",
+        text: "foo1b",
+        consoleTrace: {
+          file: "test-bug_939783_console_trace_duplicates.html",
+          fn: "foo3",
+        },
+      }],
+    });
+  }
+}