diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_pretty-print-08.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_pretty-print-08.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,94 @@
+/* -*- Mode: javascript; js-indent-level: 2; -*- */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test stepping through pretty printed sources.
+
+let gTab, gDebuggee, gPanel, gClient, gThreadClient, gSource;
+
+const TAB_URL = EXAMPLE_URL + "doc_pretty-print-2.html";
+
+function test() {
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    gTab = aTab;
+    gDebuggee = aDebuggee;
+    gPanel = aPanel;
+    gClient = gPanel.panelWin.gClient;
+    gThreadClient = gPanel.panelWin.DebuggerController.activeThread;
+
+    gDebuggee.noop = x => x;
+    findSource();
+  });
+}
+
+let CODE_URL;
+
+const BP_LOCATION = {
+  line: 5,
+  column: 11
+};
+
+function findSource() {
+  gThreadClient.getSources(({ error, sources }) => {
+    ok(!error);
+    sources = sources.filter(s => s.url.contains("code_ugly-3.js"));
+    is(sources.length, 1);
+    [gSource] = sources;
+    CODE_URL = BP_LOCATION.url = gSource.url;
+
+    prettyPrintSource(sources[0]);
+  });
+}
+
+function prettyPrintSource(source) {
+  gThreadClient.source(gSource).prettyPrint(2, runCode);
+}
+
+function runCode({ error }) {
+  ok(!error);
+  gClient.addOneTimeListener("paused", testDbgStatement);
+  gDebuggee.main3();
+}
+
+function testDbgStatement(event, { why, frame }) {
+  is(why.type, "debuggerStatement");
+  const { url, line, column } = frame.where;
+  is(url, CODE_URL);
+  is(line, 3);
+  setBreakpoint();
+}
+
+function setBreakpoint() {
+  gThreadClient.setBreakpoint(BP_LOCATION, ({ error, actualLocation }) => {
+    ok(!error);
+    ok(!actualLocation);
+    testStepping();
+  });
+}
+
+function testStepping() {
+  gClient.addOneTimeListener("paused", (event, { why, frame }) => {
+    is(why.type, "resumeLimit");
+    const { url, line } = frame.where;
+    is(url, CODE_URL);
+    is(line, 4);
+    testHitBreakpoint();
+  });
+  gThreadClient.stepIn();
+}
+
+function testHitBreakpoint() {
+  gClient.addOneTimeListener("paused", (event, { why, frame }) => {
+    is(why.type, "breakpoint");
+    const { url, line } = frame.where;
+    is(url, CODE_URL);
+    is(line, BP_LOCATION.line);
+
+    resumeDebuggerThenCloseAndFinish(gPanel);
+  });
+  gThreadClient.resume();
+}
+
+registerCleanupFunction(function() {
+  gTab = gDebuggee = gPanel = gClient = gThreadClient = gSource = null;
+});