Fix reversed roles lookup

spec/ParseRole.spec.js

@@ -1,4 +1,4 @@
-
+"use strict";
 
 // Roles are not accessible without the master key, so they are not intended
 // for use by clients.  We can manually test them using the master key.
@@ -64,26 +64,30 @@ describe('Parse Role testing', () => {
 
     var rolesNames = ["FooRole", "BarRole", "BazRole"];
 
-    var createRole = function(name, parent, user) {
+    var createRole = function(name, sibling, user) {
       var role = new Parse.Role(name, new Parse.ACL());
       if (user) {
         var users = role.relation('users');
         users.add(user);
       }
-      if (parent) {
-        role.relation('roles').add(parent);
+      if (sibling) {
+        role.relation('roles').add(sibling);
       }
       return role.save({}, { useMasterKey: true });
     }
     var roleIds = {};
      createTestUser().then( (user) => {
-
-       return createRole(rolesNames[0], null, null).then( (aRole) => {
+       // Put the user on the 1st role
+       return createRole(rolesNames[0], null, user).then( (aRole) => {
          roleIds[aRole.get("name")] = aRole.id;
+         // set the 1st role as a sibling of the second
+         // user will should have 2 role now
           return createRole(rolesNames[1], aRole, null);
        }).then( (anotherRole) => {
          roleIds[anotherRole.get("name")] = anotherRole.id;
-         return createRole(rolesNames[2], anotherRole, user);
+         // set this role as a sibling of the last
+         // the user should now have 3 roles
+         return createRole(rolesNames[2], anotherRole, null);
        }).then( (lastRole) => {
          roleIds[lastRole.get("name")] = lastRole.id;
          var auth = new Auth({ config: new Config("test"), isMaster: true, user: user });
@@ -118,6 +122,53 @@ describe('Parse Role testing', () => {
       });
     });
   });
+  
+  it("Should properly resolve roles", (done) => {
+    let admin = new Parse.Role("Admin", new Parse.ACL());
+    let moderator = new Parse.Role("Moderator", new Parse.ACL());
+    let contentCreator = new Parse.Role('ContentManager', new Parse.ACL());
+    
+    Parse.Object.saveAll([admin, moderator, contentCreator], {useMasterKey: true}).then(() => {
+      contentCreator.getRoles().add(moderator);
+      moderator.getRoles().add(admin);
+      return Parse.Object.saveAll([admin, moderator, contentCreator], {useMasterKey: true});
+    }).then(() => { 
+      var auth = new Auth({ config: new Config("test"), isMaster: true });
+      // For each role, fetch their sibling, what they inherit
+      // return with result and roleId for later comparison
+      let promises = [admin, moderator, contentCreator].map((role) => {
+        return auth._getAllRoleNamesForId(role.id).then((result) => {
+          return Parse.Promise.as({
+            id: role.id,
+            roleIds: result
+          });
+        })
+      });
+      
+      return Parse.Promise.when(promises);
+    }).then((results) => {
+
+      results.forEach((result) => {
+        let id = result.id;
+        let roleIds = result.roleIds;
+        if (id == admin.id) {
+          expect(roleIds.length).toBe(2);
+          expect(roleIds.indexOf(moderator.id)).not.toBe(-1);
+          expect(roleIds.indexOf(contentCreator.id)).not.toBe(-1);
+        } else if (id == moderator.id) {
+          expect(roleIds.length).toBe(1);
+          expect(roleIds.indexOf(contentCreator.id)).toBe(0);
+        } else if (id == contentCreator.id) {
+          expect(roleIds.length).toBe(0);
+        }
+      });
+      done();
+    }).fail((err) => {
+      console.error(err);
+      done();
+    })
+    
+  });
 
 });
 

src/Auth.js

@@ -139,18 +139,18 @@ Auth.prototype._loadRoles = function() {
 };
 
 // Given a role object id, get any other roles it is part of
-// TODO: Make recursive to support role nesting beyond 1 level deep
 Auth.prototype._getAllRoleNamesForId = function(roleID) {
+  
+  // As per documentation, a Role inherits AnotherRole
+  // if this Role is in the roles pointer of this AnotherRole
+  // Let's find all the roles where this role is in a roles relation
   var rolePointer = {
     __type: 'Pointer',
     className: '_Role',
     objectId: roleID
   };
   var restWhere = {
-    '$relatedTo': {
-      key: 'roles',
-      object: rolePointer
-    }
+    'roles': rolePointer
   };
   var query = new RestQuery(this.config, master(this.config), '_Role',
                             restWhere, {});
@@ -161,6 +161,10 @@ Auth.prototype._getAllRoleNamesForId = function(roleID) {
     }
     var roleIDs = results.map(r => r.objectId);
     
+    // we found a list of roles where the roleID
+    // is referenced in the roles relation,
+    // Get the roles where those found roles are also
+    // referenced the same way
     var parentRolesPromises = roleIDs.map( (roleId) => {
       return this._getAllRoleNamesForId(roleId);
     });