michael@0: // Any copyright is dedicated to the Public Domain.
michael@0: // http://creativecommons.org/publicdomain/zero/1.0/
michael@0: 
michael@0: // Test Debugger.Object.prototype.unsafeDereference in the presence of
michael@0: // interesting cross-compartment wrappers.
michael@0: //
michael@0: // This is not really a debugger server test; it's more of a Debugger test.
michael@0: // But we need xpcshell and Components.utils.Sandbox to get
michael@0: // cross-compartment wrappers with interesting properties, and this is the
michael@0: // xpcshell test directory most closely related to the JS Debugger API.
michael@0: 
michael@0: Components.utils.import("resource://gre/modules/jsdebugger.jsm");
michael@0: addDebuggerToGlobal(this);
michael@0: 
michael@0: // Add a method to Debugger.Object for fetching value properties
michael@0: // conveniently.
michael@0: Debugger.Object.prototype.getProperty = function (aName) {
michael@0:   let desc = this.getOwnPropertyDescriptor(aName);
michael@0:   if (!desc)
michael@0:     return undefined;
michael@0:   if (!desc.value) {
michael@0:     throw Error("Debugger.Object.prototype.getProperty: " +
michael@0:                 "not a value property: " + aName);
michael@0:   }
michael@0:   return desc.value;
michael@0: };
michael@0: 
michael@0: function run_test() {
michael@0:   // Create a low-privilege sandbox, and a chrome-privilege sandbox.
michael@0:   let contentBox = Components.utils.Sandbox('http://www.example.com');
michael@0:   let chromeBox = Components.utils.Sandbox(this);
michael@0: 
michael@0:   // Create an objects in this compartment, and one in each sandbox. We'll
michael@0:   // refer to the objects as "mainObj", "contentObj", and "chromeObj", in
michael@0:   // variable and property names.
michael@0:   var mainObj = { name: "mainObj" };
michael@0:   Components.utils.evalInSandbox('var contentObj = { name: "contentObj" };',
michael@0:                                  contentBox);
michael@0:   Components.utils.evalInSandbox('var chromeObj = { name: "chromeObj" };',
michael@0:                                  chromeBox);
michael@0: 
michael@0:   // Give each global a pointer to all the other globals' objects.
michael@0:   contentBox.mainObj = chromeBox.mainObj = mainObj;
michael@0:   var contentObj = chromeBox.contentObj = contentBox.contentObj;
michael@0:   var chromeObj  = contentBox.chromeObj = chromeBox.chromeObj;
michael@0: 
michael@0:   // First, a whole bunch of basic sanity checks, to ensure that JavaScript
michael@0:   // evaluated in various scopes really does see the world the way this
michael@0:   // test expects it to.
michael@0: 
michael@0:   // The objects appear as global variables in the sandbox, and as
michael@0:   // the sandbox object's properties in chrome.
michael@0:   do_check_true(Components.utils.evalInSandbox('mainObj', contentBox)
michael@0:                 === contentBox.mainObj);
michael@0:   do_check_true(Components.utils.evalInSandbox('contentObj', contentBox)
michael@0:                 === contentBox.contentObj);
michael@0:   do_check_true(Components.utils.evalInSandbox('chromeObj', contentBox)
michael@0:                 === contentBox.chromeObj);
michael@0:   do_check_true(Components.utils.evalInSandbox('mainObj', chromeBox)
michael@0:                 === chromeBox.mainObj);
michael@0:   do_check_true(Components.utils.evalInSandbox('contentObj', chromeBox)
michael@0:                 === chromeBox.contentObj);
michael@0:   do_check_true(Components.utils.evalInSandbox('chromeObj', chromeBox)
michael@0:                 === chromeBox.chromeObj);
michael@0: 
michael@0:   // We (the main global) can see properties of all objects in all globals.
michael@0:   do_check_true(contentBox.mainObj.name === "mainObj");
michael@0:   do_check_true(contentBox.contentObj.name === "contentObj");
michael@0:   do_check_true(contentBox.chromeObj.name === "chromeObj");
michael@0: 
michael@0:   // chromeBox can see properties of all objects in all globals.
michael@0:   do_check_eq(Components.utils.evalInSandbox('mainObj.name', chromeBox),
michael@0:               'mainObj');
michael@0:   do_check_eq(Components.utils.evalInSandbox('contentObj.name', chromeBox),
michael@0:               'contentObj');
michael@0:   do_check_eq(Components.utils.evalInSandbox('chromeObj.name', chromeBox),
michael@0:               'chromeObj');
michael@0: 
michael@0:   // contentBox can see properties of the content object, but not of either
michael@0:   // chrome object, because by default, content -> chrome wrappers hide all
michael@0:   // object properties.
michael@0:   do_check_eq(Components.utils.evalInSandbox('mainObj.name', contentBox),
michael@0:               undefined);
michael@0:   do_check_eq(Components.utils.evalInSandbox('contentObj.name', contentBox),
michael@0:               'contentObj');
michael@0:   do_check_eq(Components.utils.evalInSandbox('chromeObj.name', contentBox),
michael@0:               undefined);
michael@0: 
michael@0:   // When viewing an object in compartment A from the vantage point of
michael@0:   // compartment B, Debugger should give the same results as debuggee code
michael@0:   // would.
michael@0: 
michael@0:   // Create a debugger, debugging our two sandboxes.
michael@0:   let dbg = new Debugger;
michael@0: 
michael@0:   // Create Debugger.Object instances referring to the two sandboxes, as
michael@0:   // seen from their own compartments.
michael@0:   let contentBoxDO = dbg.addDebuggee(contentBox);
michael@0:   let chromeBoxDO = dbg.addDebuggee(chromeBox);
michael@0: 
michael@0:   // Use Debugger to view the objects from contentBox. We should get the
michael@0:   // same D.O instance from both getProperty and makeDebuggeeValue, and the
michael@0:   // same property visibility we checked for above.
michael@0:   let mainFromContentDO = contentBoxDO.getProperty('mainObj');
michael@0:   do_check_eq(mainFromContentDO, contentBoxDO.makeDebuggeeValue(mainObj));
michael@0:   do_check_eq(mainFromContentDO.getProperty('name'), undefined);
michael@0:   do_check_eq(mainFromContentDO.unsafeDereference(), mainObj);
michael@0: 
michael@0:   let contentFromContentDO = contentBoxDO.getProperty('contentObj');
michael@0:   do_check_eq(contentFromContentDO, contentBoxDO.makeDebuggeeValue(contentObj));
michael@0:   do_check_eq(contentFromContentDO.getProperty('name'), 'contentObj');
michael@0:   do_check_eq(contentFromContentDO.unsafeDereference(), contentObj);
michael@0: 
michael@0:   let chromeFromContentDO = contentBoxDO.getProperty('chromeObj');
michael@0:   do_check_eq(chromeFromContentDO, contentBoxDO.makeDebuggeeValue(chromeObj));
michael@0:   do_check_eq(chromeFromContentDO.getProperty('name'), undefined);
michael@0:   do_check_eq(chromeFromContentDO.unsafeDereference(), chromeObj);
michael@0: 
michael@0:   // Similarly, viewing from chromeBox.
michael@0:   let mainFromChromeDO = chromeBoxDO.getProperty('mainObj');
michael@0:   do_check_eq(mainFromChromeDO, chromeBoxDO.makeDebuggeeValue(mainObj));
michael@0:   do_check_eq(mainFromChromeDO.getProperty('name'), 'mainObj');
michael@0:   do_check_eq(mainFromChromeDO.unsafeDereference(), mainObj);
michael@0: 
michael@0:   let contentFromChromeDO = chromeBoxDO.getProperty('contentObj');
michael@0:   do_check_eq(contentFromChromeDO, chromeBoxDO.makeDebuggeeValue(contentObj));
michael@0:   do_check_eq(contentFromChromeDO.getProperty('name'), 'contentObj');
michael@0:   do_check_eq(contentFromChromeDO.unsafeDereference(), contentObj);
michael@0: 
michael@0:   let chromeFromChromeDO = chromeBoxDO.getProperty('chromeObj');
michael@0:   do_check_eq(chromeFromChromeDO, chromeBoxDO.makeDebuggeeValue(chromeObj));
michael@0:   do_check_eq(chromeFromChromeDO.getProperty('name'), 'chromeObj');
michael@0:   do_check_eq(chromeFromChromeDO.unsafeDereference(), chromeObj);
michael@0: }