node/deps/v8/test/mjsunit/debug-liveedit-breakpoints.js

// Copyright 2010 the V8 project authors. All rights reserved.
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// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.

Debug = debug.Debug

var function_z_text =
"  function Z() {\n"
+ "    return 'Z';\n" // Breakpoint line ( #6 )
+ "  }\n";

eval(
"function F25() {\n"
+ "  return 25;\n" // Breakpoint line ( #1 )
+ "}\n"
+ "function F26 () {\n"
+ "  var x = 20;\n"
+ function_z_text // function takes exactly 3 lines
//                 // Breakpoint line ( #6 )
//
+ "  var y = 6;\n"
+ "  return x + y;\n"
+ "}\n"
+ "function Nested() {\n"
+ "  var a = 30;\n"
+ "  return function F27() {\n"
+ "    var b = 3;\n" // Breakpoint line ( #14 )
+ "    return a - b;\n"
+ "  }\n"
+ "}\n"
);


assertEquals(25, F25());
assertEquals(26, F26());

var script = Debug.findScript(F25);

assertEquals(0, Debug.scriptBreakPoints().length);

Debug.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId, script.id, 1, 1, "true || false || false");
Debug.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId, script.id, 6, 1, "true || false || false");
Debug.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId, script.id, 14, 1, "true || false || false");

assertEquals(3, Debug.scriptBreakPoints().length);

var new_source = script.source.replace(function_z_text, "");
print("new source: " + new_source);

var change_log = new Array();
var result = Debug.LiveEdit.SetScriptSource(script, new_source, false, change_log);
print("Result: " + JSON.stringify(result) + "\n");
print("Change log: " + JSON.stringify(change_log) + "\n");

var breaks = Debug.scriptBreakPoints();

// One breakpoint gets duplicated in a old version of script.
assertTrue(breaks.length > 3 + 1);

var breakpoints_in_script = 0;
var break_position_map = {};
for (var i = 0; i < breaks.length; i++) {
  if (breaks[i].script_id() == script.id) {
    break_position_map[breaks[i].line()] = true;
    breakpoints_in_script++;
  }
}

assertEquals(3, breakpoints_in_script);

// Check 2 breakpoints. The one in deleted function should have been moved somewhere.
assertTrue(break_position_map[1]);
assertTrue(break_position_map[11]);

// Delete all breakpoints to make this test reentrant.
var breaks = Debug.scriptBreakPoints();
var breaks_ids = [];

for (var i = 0; i < breaks.length; i++) {
  breaks_ids.push(breaks[i].number());
}

for (var i = 0; i < breaks_ids.length; i++) {
  Debug.clearBreakPoint(breaks_ids[i]);
}

assertEquals(0, Debug.scriptBreakPoints().length);