diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_breakpoints-new-script.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_breakpoints-new-script.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,90 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Bug 771452: Make sure that setting a breakpoint in an inline source doesn't
+ * add it twice.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_inline-script.html";
+
+let gTab, gDebuggee, gPanel, gDebugger;
+
+function test() {
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    gTab = aTab;
+    gDebuggee = aDebuggee;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+
+    addBreakpoint();
+  });
+}
+
+function addBreakpoint() {
+  waitForSourceAndCaretAndScopes(gPanel, ".html", 16).then(() => {
+    is(gDebugger.gThreadClient.state, "paused",
+      "The debugger statement was reached.");
+    ok(isCaretPos(gPanel, 16),
+      "The source editor caret position is incorrect (1).");
+
+    gPanel.addBreakpoint({ url: TAB_URL, line: 20 }).then(() => {
+      testResume();
+    });
+  });
+
+  gDebuggee.runDebuggerStatement();
+}
+
+function testResume() {
+  is(gDebugger.gThreadClient.state, "paused",
+    "The breakpoint wasn't hit yet.");
+
+  gDebugger.gThreadClient.resume(() => {
+    gDebugger.gThreadClient.addOneTimeListener("paused", (aEvent, aPacket) => {
+      waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES).then(() => {
+        is(aPacket.why.type, "breakpoint",
+          "Execution has advanced to the next breakpoint.");
+        isnot(aPacket.why.type, "debuggerStatement",
+          "The breakpoint was hit before the debugger statement.");
+        ok(isCaretPos(gPanel, 20),
+          "The source editor caret position is incorrect (2).");
+
+        testBreakpointHit();
+      });
+    });
+
+    EventUtils.sendMouseEvent({ type: "click" },
+      gDebuggee.document.querySelector("button"),
+      gDebuggee);
+  });
+}
+
+function testBreakpointHit() {
+  is(gDebugger.gThreadClient.state, "paused",
+    "The breakpoint was hit.");
+
+  gDebugger.gThreadClient.addOneTimeListener("paused", (aEvent, aPacket) => {
+    waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES).then(() => {
+      is(aPacket.why.type, "debuggerStatement",
+        "Execution has advanced to the next line.");
+      isnot(aPacket.why.type, "breakpoint",
+        "No ghost breakpoint was hit.");
+      ok(isCaretPos(gPanel, 20),
+        "The source editor caret position is incorrect (3).");
+
+      resumeDebuggerThenCloseAndFinish(gPanel);
+    });
+  });
+
+  EventUtils.sendMouseEvent({ type: "mousedown" },
+    gDebugger.document.getElementById("resume"),
+    gDebugger);
+}
+
+registerCleanupFunction(function() {
+  gTab = null;
+  gDebuggee = null;
+  gPanel = null;
+  gDebugger = null;
+});