v8/test/mjsunit/debug-script.js

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// Flags: --expose-debug-as debug --expose-gc --send-idle-notification
// Flags: --allow-natives-syntax --expose-natives-as natives
// Flags: --noharmony-shipping
// Flags: --nostress-opt

// --nostress-opt is specified because in stress mode the compilation cache
// may hold on to old copies of scripts (see bug 1641).

// Note: this test checks that that the number of scripts reported as native
// by Debug.scripts() is the same as a number of core native scripts.
// Native scripts that are added by --harmony-shipping are classified
// as 'experimental', but are still returned by Debug.scripts(), so
// we disable harmony-shipping for this test

// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug;
Debug.setListener(function(){});

Date();
RegExp();

// Count script types.
var named_native_count = 0;
var named_native_names = {};
var extension_count = 0;
var normal_count = 0;
var scripts = Debug.scripts();
for (i = 0; i < scripts.length; i++) {
  if (scripts[i].type == Debug.ScriptType.Native) {
    if (scripts[i].name) {
      // TODO(1641): Remove check for equally named native scripts once the
      // underlying issue is fixed.
      if (!named_native_names[scripts[i].name]) {
        named_native_names[scripts[i].name] = true;
        named_native_count++;
      }
    }
  } else if (scripts[i].type == Debug.ScriptType.Extension) {
    extension_count++;
  } else if (scripts[i].type == Debug.ScriptType.Normal) {
    normal_count++;
  } else {
    assertUnreachable('Unexpected type ' + scripts[i].type);
  }
}

// This has to be updated if the number of native scripts change.
assertEquals(%NativeScriptsCount(), named_native_count);
// The 'gc' extension and one or two extras scripts are loaded.
assertTrue(extension_count == 2 || extension_count == 3);
// This script and mjsunit.js has been loaded.  If using d8, d8 loads
// a normal script during startup too.
assertTrue(normal_count == 2 || normal_count == 3);

// Test a builtins script.
var math_script = Debug.findScript('native math.js');
assertEquals('native math.js', math_script.name);
assertEquals(Debug.ScriptType.Native, math_script.type);

// Test a builtins delay loaded script.
var date_delay_script = Debug.findScript('native json.js');
assertEquals('native json.js', date_delay_script.name);
assertEquals(Debug.ScriptType.Native, date_delay_script.type);

// Test a debugger script.
var debug_delay_script = Debug.findScript('native debug.js');
assertEquals('native debug.js', debug_delay_script.name);
assertEquals(Debug.ScriptType.Native, debug_delay_script.type);

// Test an extension script.
var extension_gc_script = Debug.findScript('v8/gc');
if (extension_gc_script) {
  assertEquals('v8/gc', extension_gc_script.name);
  assertEquals(Debug.ScriptType.Extension, extension_gc_script.type);
}

// Test a normal script.
var debug_script = Debug.findScript(/debug-script.js/);
assertTrue(/debug-script.js/.test(debug_script.name));
assertEquals(Debug.ScriptType.Normal, debug_script.type);

// Check a nonexistent script.
var dummy_script = Debug.findScript('dummy.js');
assertTrue(typeof dummy_script == 'undefined');

Debug.setListener(null);