list and map types work now and they support delete. added random tests

src/Struct.js

@@ -50,6 +50,33 @@ var Struct = {
       return op;
     }
   },
+  Delete: {
+    create: function* (op) {
+      if (op.target == null) {
+        throw new Error("You must define a delete target!");
+      }
+      op.struct = "Delete";
+      yield* Struct.Operation.create.call(this, op);
+
+      var target = yield* this.getOperation(op.target);
+      target.deleted = true;
+      yield* this.setOperation(target);
+    },
+    encode: function (op) {
+      return op;
+    },
+    requiredOps: function (op) {
+      return [op.target];
+    },
+    execute: function* (op) {
+      if ((yield* this.addOperation(op)) === false) {
+        return;
+      }
+      var target = yield* this.getOperation(op.target);
+      target.deleted = true;
+      yield* this.setOperation(target);
+    }
+  },
   Insert: {
     /*{
         content: any,
@@ -294,27 +321,57 @@ var Struct = {
       if (op.start == null) {
         return null;
       }
+      var res = null;
       var o = yield* this.getOperation(op.start);
-      while ( pos !== 0 && o.right != null) {
-        o = (yield* this.getOperation(o.right));
+
+      while ( true ) {
+        if (!o.deleted) {
+          res = o;
           pos--;
         }
-      return o;
+        if (pos >= 0 && o.right != null) {
+          o = (yield* this.getOperation(o.right));
+        } else {
+          break;
+        }
+      }
+      return res;
+    },
+    delete: function* (op, pos) {
+      var ref = yield* Struct.List.ref.call(this, op, pos);
+      if (ref != null) {
+        yield* Struct.Delete.create.call(this, {
+          target: ref.id
+        });
+      }
     },
     map: function* (o : Op, f : Function) : Array<any> {
       o = o.start;
       var res = [];
       while ( o != null) {
         var operation = yield* this.getOperation(o);
+        if (!operation.deleted) {
           res.push(f(operation.content));
+        }
         o = operation.right;
       }
       return res;
     },
     insert: function* (op, pos : number, contents : Array<any>) {
-      var ref = yield* Struct.List.ref.call(this, op, pos);
-      var right = ref != null ? ref.id : null;
-      var left = ref != null ? ref.left : null;
+      var left, right;
+      if (pos === 0) {
+        left = null;
+        right = op.start;
+      } else {
+        var ref = yield* Struct.List.ref.call(this, op, pos - 1);
+        if (ref === null) {
+          left = op.end;
+          right = null;
+        } else {
+          left = ref.id;
+          right = ref.right;
+        }
+      }
       for (var key in contents) {
         var insert = {
           left: left,
@@ -361,13 +418,14 @@ var Struct = {
     },
     get: function* (op, name) {
       var res = yield* this.getOperation(op.map[name]);
-      return (res == null) ? void 0 : (res.opContent == null
+      return (res == null || res.deleted) ? void 0 : (res.opContent == null
                 ? res.content : yield* this.getType(res.opContent));
     },
     set: function* (op, name, value) {
+      var right = op.map[name] || null;
       var insert = {
         left: null,
-        right: op.map[name] || null,
+        right: right,
         parent: op.id,
         parentSub: name
       };
@@ -379,6 +437,19 @@ var Struct = {
         insert.content = value;
       }
       yield* Struct.Insert.create.call(this, insert);
+      if (right != null) {
+        yield* Struct.Delete.create.call(this, {
+          target: right
+        });
+      }
+    },
+    delete: function* (op, name) {
+      var v = op.map[name] || null;
+      if (v != null) {
+        yield* Struct.Delete.create.call(this, {
+          target: v
+        });
+      }
     }
   }
 };

src/Types/List.js

@@ -16,9 +16,22 @@
       }
     }
     *insert (pos, contents) {
+      if (typeof pos !== "number") {
+        throw new Error("pos must be a number!");
+      }
+      if (!(contents instanceof Array)) {
+        throw new Error("contents must be an Array of objects!");
+      }
       var t = yield "transaction";
       yield* Y.Struct.List.insert.call(t, this._model, pos, contents);
     }
+    *delete (pos) {
+      if (typeof pos !== "number") {
+        throw new Error("pos must be a number!");
+      }
+      var t = yield "transaction";
+      yield* Y.Struct.List.delete.call(t, this._model, pos);
+    }
   }
 
   Y.List = function* YList(){

src/Types/Map.js

@@ -7,7 +7,16 @@
     *val () {
       var t = yield "transaction";
       var model = yield* t.getOperation(this._model);
-      if (arguments.length === 1) {
+      if (arguments.length === 0) {
+        var res = {};
+        for (var key in model.map) {
+          var v = yield* Y.Struct.Map.get.call(t, model, key);
+          if (v != null) {
+            res[key] = v;
+          }
+        }
+        return res;
+      } else if (arguments.length === 1) {
         return yield* Y.Struct.Map.get.call(t, model, arguments[0]);
       } else if (arguments.length === 2) {
         return yield* Y.Struct.Map.set.call(t, model, arguments[0], arguments[1]);
@@ -15,6 +24,11 @@
         throw new Error("Implement this case!");
       }
     }
+    *delete (key) {
+      var t = yield "transaction";
+      var model = yield* t.getOperation(this._model);
+      yield* Y.Struct.Map.delete.call(t, model, key);
+    }
   }
 
   Y.Map = function* YMap(){

src/y.spec.js

@@ -21,7 +21,7 @@ function getRandomNumber(n) {
   return Math.floor(Math.random() * n);
 }
 var keys = ["a", "b", "c", "d", "e", "f", 1, 2, 3, 4, 5, 6];
-var numberOfYMapTests = 20;
+var numberOfYMapTests = 30;
 
 function applyRandomTransactions (users, transactions, numberOfTransactions) {
   function* randomTransaction (root) {
@@ -180,18 +180,43 @@ describe("Yjs", function(){
       }
     });
   });
-  it("can create a List type", function(){
+  it("Basic get&set&delete with Map property", function(){
+    var y = this.users[0];
+    y.connector.flushAll();
+    this.users[0].transact(function*(root){
+      yield* root.val("stuff", "c0");
+    });
+    this.users[0].transact(function*(root){
+      yield* root.val("stuff", "c1");
+    });
+    this.users[0].transact(function*(root){
+      yield* root.delete("stuff");
+    });
+
+    y.connector.flushAll();
+    var transaction = function*(root){
+      expect(yield* root.val("stuff")).toBeUndefined();
+    };
+
+    for (var key in this.users) {
+      var u = this.users[key];
+      u.transact(transaction);
+    }
+  });
+
+  it("List type: can create, insert, and delete elements", function(){
     var y = this.users[0];
     y.transact(function*(root){
       var list = yield* Y.List();
       yield* root.val("list", list);
       yield* list.insert(0, [1, 2, 3, 4]);
+      yield* list.delete(1);
       expect(yield* root.val("list")).not.toBeUndefined();
     });
     y.connector.flushAll();
     function* transaction (root) {
       var list = yield* root.val("list");
-      expect(yield* list.val()).toEqual([1, 2, 3, 4]);
+      expect(yield* list.val()).toEqual([1, 3, 4]);
     }
     for (var u of this.users) {
       u.transact(transaction);
@@ -200,19 +225,66 @@ describe("Yjs", function(){
   describe("Map random tests", function(){
     var randomMapTransactions = [
       function* set (map) {
-        yield* map.val("getRandom(keys)", getRandomNumber());
+        yield* map.val("somekey", getRandomNumber());
+      },
+      function* delete_ (map) {
+        yield* map.delete("somekey");
       }
     ];
     it(`succeed after ${numberOfYMapTests} actions with flush before transactions`, function(){
       this.users[0].connector.flushAll();
       applyRandomTransactions(this.users, randomMapTransactions, numberOfYMapTests);
       compareAllUsers(this.users);
+      var firstMap;
+      for (var u of this.users) {
+        u.transact(function*(root){//eslint-disable-line
+          var val = yield* root.val();
+          if (firstMap == null) {
+            firstMap = val;
+          } else {
+            expect(val).toEqual(firstMap);
+          }
+        });
+      }
     });
     it(`succeed after ${numberOfYMapTests} actions without flush before transactions`, function(){
       applyRandomTransactions(this.users, randomMapTransactions, numberOfYMapTests);
       compareAllUsers(this.users);
     });
   });
+  var numberOfYListTests = 100;
+  describe("List random tests", function(){
+    var randomListTests = [function* insert (root) {
+      var list = yield* root.val("list");
+      yield* list.insert(Math.floor(Math.random() * 10), [getRandomNumber()]);
+    }, function* delete_(root) {
+      var list = yield* root.val("list");
+      yield* list.delete(Math.floor(Math.random() * 10));
+    }];
+    beforeEach(function(){
+      this.users[0].transact(function*(root){
+        var list = yield* Y.List();
+        yield* root.val("list", list);
+      });
+      this.users[0].connector.flushAll();
+    });
+
+    it(`succeeds after ${numberOfYListTests} actions`, function(){
+      applyRandomTransactions(this.users, randomListTests, numberOfYListTests);
+      compareAllUsers(this.users);
+      var userList;
+      this.users[0].transact(function*(root){
+        var list = yield* root.val("list");
+        if (userList == null) {
+          userList = yield* list.val();
+        } else {
+          expect(userList).toEqual(yield* list.val());
+          expect(userList.length > 0).toBeTruthy();
+        }
+      });
+    });
+  });
+
   describe("Map debug tests", function(){
     beforeEach(function(){
       this.u1 = this.users[0];