v8/test/mjsunit/debug-script-breakpoints.js

// Copyright 2008 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug
Debug.setListener(function(){});

var script_id;
var script_name;

// Get current script id and name.
var scripts = Debug.scripts();
for (var i = 0; i < scripts.length; i++) {
  var name = scripts[i].name;
  var id = scripts[i].id;
  if (name !== undefined && name.includes("debug-script-breakpoints.js")) {
    script_id = id;
    script_name = name;
    break;
  }
}
assertTrue(script_id !== undefined);
assertTrue(script_name !== undefined);
print("#" + script_id + ": " + script_name);


// Checks script name, line and column.
var checkBreakPoint = function(id, line, column) {
  var breakpoint = Debug.scriptBreakPoints()[id];
  assertEquals(script_name, breakpoint.script_name());
  assertEquals(line, breakpoint.line());
  assertEquals(column, breakpoint.column());
}


// Set and remove a script break point for a named script.
var sbp = Debug.setScriptBreakPointByName(script_name, 35, 5);
assertEquals(1, Debug.scriptBreakPoints().length);
checkBreakPoint(0, 35, 5);
Debug.clearBreakPoint(sbp);
assertEquals(0, Debug.scriptBreakPoints().length);

// Set three script break points for named scripts.
var sbp1 = Debug.setScriptBreakPointByName(script_name, 36, 3);
var sbp2 = Debug.setScriptBreakPointByName(script_name, 37, 4);
var sbp3 = Debug.setScriptBreakPointByName(script_name, 38, 5);

// Check the content of the script break points.
assertEquals(3, Debug.scriptBreakPoints().length);
checkBreakPoint(0, 36, 3);
checkBreakPoint(1, 37, 4);
checkBreakPoint(2, 38, 5);

// Remove script break points (in another order than they where added).
assertEquals(3, Debug.scriptBreakPoints().length);
Debug.clearBreakPoint(sbp1);
assertEquals(2, Debug.scriptBreakPoints().length);
Debug.clearBreakPoint(sbp3);
assertEquals(1, Debug.scriptBreakPoints().length);
Debug.clearBreakPoint(sbp2);
assertEquals(0, Debug.scriptBreakPoints().length);


// Checks script id, line and column.
var checkBreakPoint = function(id, line, column) {
  var breakpoint = Debug.scriptBreakPoints()[id];
  assertEquals(script_id, breakpoint.script_id());
  assertEquals(line, breakpoint.line());
  assertEquals(column, breakpoint.column());
}


// Set and remove a script break point for a script id.
var sbp = Debug.setScriptBreakPointById(script_id, 40, 6);
assertEquals(1, Debug.scriptBreakPoints().length);
checkBreakPoint(0, 40, 6);
Debug.clearBreakPoint(sbp);
assertEquals(0, Debug.scriptBreakPoints().length);

// Set three script break points for script ids.
var sbp1 = Debug.setScriptBreakPointById(script_id, 42, 3);
var sbp2 = Debug.setScriptBreakPointById(script_id, 43, 4);
var sbp3 = Debug.setScriptBreakPointById(script_id, 44, 5);

// Check the content of the script break points.
assertEquals(3, Debug.scriptBreakPoints().length);
checkBreakPoint(0, 42, 3);
checkBreakPoint(1, 43, 4);
checkBreakPoint(2, 44, 5);

// Remove script break points (in another order than they where added).
assertEquals(3, Debug.scriptBreakPoints().length);
Debug.clearBreakPoint(sbp1);
assertEquals(2, Debug.scriptBreakPoints().length);
Debug.clearBreakPoint(sbp3);
assertEquals(1, Debug.scriptBreakPoints().length);
Debug.clearBreakPoint(sbp2);
assertEquals(0, Debug.scriptBreakPoints().length);

Debug.setListener(null);