angular-docs-cn/modules/angular2/test/forms/model_spec.js

import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach, el} from 'angular2/test_lib';
import {ControlGroup, Control, OptionalControl} from 'angular2/forms';
import * as validations from 'angular2/forms';

export function main() {
  describe("Form Model", () => {
    describe("Control", () => {
      describe("validator", () => {
        it("should run validator with the initial value", () => {
          var c = new Control("value", validations.required);
          expect(c.valid).toEqual(true);
        });

        it("should rerun the validator when the value changes", () => {
          var c = new Control("value", validations.required);
          c.updateValue(null);
          expect(c.valid).toEqual(false);
        });

        it("should return errors", () => {
          var c = new Control(null, validations.required);
          expect(c.errors).toEqual({"required" : true});
        });
      });
    });

    describe("ControlGroup", () => {
      describe("value", () => {
        it("should be the reduced value of the child controls", () => {
          var g = new ControlGroup({
            "one": new Control("111"),
            "two": new Control("222")
          });
          expect(g.value).toEqual({"one": "111", "two": "222"});
        });

        it("should be empty when there are no child controls", () => {
          var g = new ControlGroup({});
          expect(g.value).toEqual({});
        });

        it("should support nested groups", () => {
          var g = new ControlGroup({
            "one": new Control("111"),
            "nested": new ControlGroup({
              "two" : new Control("222")
            })
          });
          expect(g.value).toEqual({"one": "111", "nested" : {"two": "222"}});

          g.controls["nested"].controls["two"].updateValue("333");

          expect(g.value).toEqual({"one": "111", "nested" : {"two": "333"}});
        });
      });

      describe("validator", () => {
        it("should run the validator with the initial value (valid)", () => {
          var g = new ControlGroup({
            "one": new Control('value', validations.required)
          });

          expect(g.valid).toEqual(true);

          expect(g.errors).toEqual(null);
        });

        it("should run the validator with the initial value (invalid)", () => {
          var one = new Control(null, validations.required);
          var g = new ControlGroup({"one": one});

          expect(g.valid).toEqual(false);

          expect(g.errors).toEqual({"required": [one]});
        });

        it("should run the validator with the value changes", () => {
          var c = new Control(null, validations.required);
          var g = new ControlGroup({"one": c});

          c.updateValue("some value");

          expect(g.valid).toEqual(true);
          expect(g.errors).toEqual(null);
        });
      });
    });

    describe("OptionalControl", () => {
      it("should read properties from the wrapped component", () => {
        var wrapperControl = new Control("value", validations.required);
        var c = new OptionalControl(wrapperControl, true);

        expect(c.value).toEqual('value');
        expect(c.status).toEqual('VALID');
        expect(c.validator).toEqual(validations.required);
      });

      it("should update the wrapped component", () => {
        var wrappedControl = new Control("value");
        var c = new OptionalControl(wrappedControl, true);

        c.validator = validations.required;
        c.updateValue("newValue");


        expect(wrappedControl.validator).toEqual(validations.required);
        expect(wrappedControl.value).toEqual('newValue');
      });

      it("should not include an inactive component into the group value", () => {
        var group = new ControlGroup({
          "required" : new Control("requiredValue"),
          "optional" : new OptionalControl(new Control("optionalValue"), false)
        });

        expect(group.value).toEqual({"required" : "requiredValue"});

        group.controls["optional"].cond = true;

        expect(group.value).toEqual({"required" : "requiredValue", "optional" : "optionalValue"});
      });

      it("should not run validations on an inactive component", () => {
        var group = new ControlGroup({
          "required" : new Control("requiredValue", validations.required),
          "optional" : new OptionalControl(new Control("", validations.required), false)
        });

        expect(group.valid).toEqual(true);

        group.controls["optional"].cond = true;

        expect(group.valid).toEqual(false);
      });
    });

  });
}