angular-cn/modules/angular2/test/common/forms/model_spec.ts

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import {
ddescribe,
describe,
it,
iit,
xit,
expect,
beforeEach,
afterEach,
el,
AsyncTestCompleter,
fakeAsync,
tick,
inject
} from 'angular2/testing_internal';
import {ControlGroup, Control, ControlArray, Validators} from 'angular2/core';
import {IS_DART, isPresent, CONST_EXPR} from 'angular2/src/facade/lang';
import {PromiseWrapper} from 'angular2/src/facade/promise';
import {TimerWrapper, ObservableWrapper, EventEmitter} from 'angular2/src/facade/async';
export function main() {
function asyncValidator(expected, timeouts = CONST_EXPR({})) {
return (c) => {
var completer = PromiseWrapper.completer();
var t = isPresent(timeouts[c.value]) ? timeouts[c.value] : 0;
var res = c.value != expected ? {"async": true} : null;
if (t == 0) {
completer.resolve(res);
} else {
TimerWrapper.setTimeout(() => { completer.resolve(res); }, t);
}
return completer.promise;
};
}
function asyncValidatorReturningObservable(c) {
var e = new EventEmitter();
PromiseWrapper.scheduleMicrotask(() => ObservableWrapper.callEmit(e, {"async": true}));
return e;
}
describe("Form Model", () => {
describe("Control", () => {
it("should default the value to null", () => {
var c = new Control();
expect(c.value).toBe(null);
});
describe("validator", () => {
it("should run validator with the initial value", () => {
var c = new Control("value", Validators.required);
expect(c.valid).toEqual(true);
});
it("should rerun the validator when the value changes", () => {
var c = new Control("value", Validators.required);
c.updateValue(null);
expect(c.valid).toEqual(false);
});
it("should return errors", () => {
var c = new Control(null, Validators.required);
expect(c.errors).toEqual({"required": true});
});
});
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describe("asyncValidator", () => {
it("should run validator with the initial value", fakeAsync(() => {
var c = new Control("value", null, asyncValidator("expected"));
tick();
expect(c.valid).toEqual(false);
expect(c.errors).toEqual({"async": true});
}));
it("should support validators returning observables", fakeAsync(() => {
var c = new Control("value", null, asyncValidatorReturningObservable);
tick();
expect(c.valid).toEqual(false);
expect(c.errors).toEqual({"async": true});
}));
it("should rerun the validator when the value changes", fakeAsync(() => {
var c = new Control("value", null, asyncValidator("expected"));
c.updateValue("expected");
tick();
expect(c.valid).toEqual(true);
}));
it("should run the async validator only when the sync validator passes", fakeAsync(() => {
var c = new Control("", Validators.required, asyncValidator("expected"));
tick();
expect(c.errors).toEqual({"required": true});
c.updateValue("some value");
tick();
expect(c.errors).toEqual({"async": true});
}));
it("should mark the control as pending while running the async validation",
fakeAsync(() => {
var c = new Control("", null, asyncValidator("expected"));
expect(c.pending).toEqual(true);
tick();
expect(c.pending).toEqual(false);
}));
it("should only use the latest async validation run", fakeAsync(() => {
var c =
new Control("", null, asyncValidator("expected", {"long": 200, "expected": 100}));
c.updateValue("long");
c.updateValue("expected");
tick(300);
expect(c.valid).toEqual(true);
}));
});
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describe("dirty", () => {
it("should be false after creating a control", () => {
var c = new Control("value");
expect(c.dirty).toEqual(false);
});
it("should be true after changing the value of the control", () => {
var c = new Control("value");
c.markAsDirty();
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expect(c.dirty).toEqual(true);
});
});
describe("updateValue", () => {
var g, c;
beforeEach(() => {
c = new Control("oldValue");
g = new ControlGroup({"one": c});
});
it("should update the value of the control", () => {
c.updateValue("newValue");
expect(c.value).toEqual("newValue");
});
it("should invoke onChanges if it is present", () => {
var onChanges;
c.registerOnChange((v) => onChanges = ["invoked", v]);
c.updateValue("newValue");
expect(onChanges).toEqual(["invoked", "newValue"]);
});
it("should not invoke on change when explicitly specified", () => {
var onChange = null;
c.registerOnChange((v) => onChange = ["invoked", v]);
c.updateValue("newValue", {emitModelToViewChange: false});
expect(onChange).toBeNull();
});
it("should update the parent", () => {
c.updateValue("newValue");
expect(g.value).toEqual({"one": "newValue"});
});
it("should not update the parent when explicitly specified", () => {
c.updateValue("newValue", {onlySelf: true});
expect(g.value).toEqual({"one": "oldValue"});
});
it("should fire an event", fakeAsync(() => {
ObservableWrapper.subscribe(c.valueChanges,
(value) => { expect(value).toEqual("newValue"); });
c.updateValue("newValue");
tick();
}));
it("should not fire an event when explicitly specified", fakeAsync(() => {
ObservableWrapper.subscribe(c.valueChanges, (value) => { throw "Should not happen"; });
c.updateValue("newValue", {emitEvent: false});
tick();
}));
});
describe("valueChanges & statusChanges", () => {
var c;
beforeEach(() => { c = new Control("old", Validators.required); });
it("should fire an event after the value has been updated",
inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(c.valueChanges, (value) => {
expect(c.value).toEqual('new');
expect(value).toEqual('new');
async.done();
});
c.updateValue("new");
}));
it("should fire an event after the status has been updated to invalid", fakeAsync(() => {
ObservableWrapper.subscribe(c.statusChanges, (status) => {
expect(c.status).toEqual('INVALID');
expect(status).toEqual('INVALID');
});
c.updateValue("");
tick();
}));
it("should fire an event after the status has been updated to pending", fakeAsync(() => {
var c = new Control("old", Validators.required, asyncValidator("expected"));
var log = [];
ObservableWrapper.subscribe(c.valueChanges, (value) => log.push(`value: '${value}'`));
ObservableWrapper.subscribe(c.statusChanges,
(status) => log.push(`status: '${status}'`));
c.updateValue("");
tick();
c.updateValue("nonEmpty");
tick();
c.updateValue("expected");
tick();
expect(log).toEqual([
"" + "value: ''",
"status: 'INVALID'",
"value: 'nonEmpty'",
"status: 'PENDING'",
"status: 'INVALID'",
"value: 'expected'",
"status: 'PENDING'",
"status: 'VALID'",
]);
}));
// TODO: remove the if statement after making observable delivery sync
if (!IS_DART) {
it("should update set errors and status before emitting an event",
inject([AsyncTestCompleter], (async) => {
c.valueChanges.subscribe(value => {
expect(c.valid).toEqual(false);
expect(c.errors).toEqual({"required": true});
async.done();
});
c.updateValue("");
}));
}
it("should return a cold observable", inject([AsyncTestCompleter], (async) => {
c.updateValue("will be ignored");
ObservableWrapper.subscribe(c.valueChanges, (value) => {
expect(value).toEqual('new');
async.done();
});
c.updateValue("new");
}));
});
describe("setErrors", () => {
it("should set errors on a control", () => {
var c = new Control("someValue");
c.setErrors({"someError": true});
expect(c.valid).toEqual(false);
expect(c.errors).toEqual({"someError": true});
});
it("should reset the errors and validity when the value changes", () => {
var c = new Control("someValue", Validators.required);
c.setErrors({"someError": true});
c.updateValue("");
expect(c.errors).toEqual({"required": true});
});
it("should update the parent group's validity", () => {
var c = new Control("someValue");
var g = new ControlGroup({"one": c});
expect(g.valid).toEqual(true);
c.setErrors({"someError": true});
expect(g.valid).toEqual(false);
});
it("should not reset parent's errors", () => {
var c = new Control("someValue");
var g = new ControlGroup({"one": c});
g.setErrors({"someGroupError": true});
c.setErrors({"someError": true});
expect(g.errors).toEqual({"someGroupError": true});
});
it("should reset errors when updating a value", () => {
var c = new Control("oldValue");
var g = new ControlGroup({"one": c});
g.setErrors({"someGroupError": true});
c.setErrors({"someError": true});
c.updateValue("newValue");
expect(c.errors).toEqual(null);
expect(g.errors).toEqual(null);
});
});
});
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({});
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});
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"}});
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(<Control>(g.controls["nested"].find("two"))).updateValue("333");
expect(g.value).toEqual({"one": "111", "nested": {"two": "333"}});
});
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});
describe("errors", () => {
it("should run the validator when the value changes", () => {
var simpleValidator = (c) =>
c.controls["one"].value != "correct" ? {"broken": true} : null;
var c = new Control(null);
var g = new ControlGroup({"one": c}, null, simpleValidator);
c.updateValue("correct");
expect(g.valid).toEqual(true);
expect(g.errors).toEqual(null);
c.updateValue("incorrect");
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({"broken": true});
});
});
describe("dirty", () => {
var c, g;
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beforeEach(() => {
c = new Control('value');
g = new ControlGroup({"one": c});
});
it("should be false after creating a control", () => { expect(g.dirty).toEqual(false); });
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it("should be false after changing the value of the control", () => {
c.markAsDirty();
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expect(g.dirty).toEqual(true);
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});
});
describe("optional components", () => {
describe("contains", () => {
var group;
beforeEach(() => {
group = new ControlGroup(
{
"required": new Control("requiredValue"),
"optional": new Control("optionalValue")
},
{"optional": false});
});
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// rename contains into has
it("should return false when the component is not included",
() => { expect(group.contains("optional")).toEqual(false); })
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it("should return false when there is no component with the given name",
() => { expect(group.contains("something else")).toEqual(false); });
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it("should return true when the component is included", () => {
expect(group.contains("required")).toEqual(true);
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group.include("optional");
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expect(group.contains("optional")).toEqual(true);
});
});
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it("should not include an inactive component into the group value", () => {
var group = new ControlGroup(
{"required": new Control("requiredValue"), "optional": new Control("optionalValue")},
{"optional": false});
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expect(group.value).toEqual({"required": "requiredValue"});
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group.include("optional");
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expect(group.value).toEqual({"required": "requiredValue", "optional": "optionalValue"});
});
it("should not run Validators on an inactive component", () => {
var group = new ControlGroup(
{
"required": new Control("requiredValue", Validators.required),
"optional": new Control("", Validators.required)
},
{"optional": false});
expect(group.valid).toEqual(true);
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group.include("optional");
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expect(group.valid).toEqual(false);
});
});
describe("valueChanges", () => {
var g, c1, c2;
beforeEach(() => {
c1 = new Control("old1");
c2 = new Control("old2");
g = new ControlGroup({"one": c1, "two": c2}, {"two": true});
});
it("should fire an event after the value has been updated",
inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(g.valueChanges, (value) => {
expect(g.value).toEqual({'one': 'new1', 'two': 'old2'});
expect(value).toEqual({'one': 'new1', 'two': 'old2'});
async.done();
});
c1.updateValue("new1");
}));
it("should fire an event after the control's observable fired an event",
inject([AsyncTestCompleter], (async) => {
var controlCallbackIsCalled = false;
ObservableWrapper.subscribe(c1.valueChanges,
(value) => { controlCallbackIsCalled = true; });
ObservableWrapper.subscribe(g.valueChanges, (value) => {
expect(controlCallbackIsCalled).toBe(true);
async.done();
});
c1.updateValue("new1");
}));
it("should fire an event when a control is excluded",
inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(g.valueChanges, (value) => {
expect(value).toEqual({'one': 'old1'});
async.done();
});
g.exclude("two");
}));
it("should fire an event when a control is included",
inject([AsyncTestCompleter], (async) => {
g.exclude("two");
ObservableWrapper.subscribe(g.valueChanges, (value) => {
expect(value).toEqual({'one': 'old1', 'two': 'old2'});
async.done();
});
g.include("two");
}));
it("should fire an event every time a control is updated",
inject([AsyncTestCompleter], (async) => {
var loggedValues = [];
ObservableWrapper.subscribe(g.valueChanges, (value) => {
loggedValues.push(value);
if (loggedValues.length == 2) {
expect(loggedValues)
.toEqual([{"one": "new1", "two": "old2"}, {"one": "new1", "two": "new2"}]);
async.done();
}
});
c1.updateValue("new1");
c2.updateValue("new2");
}));
xit("should not fire an event when an excluded control is updated",
inject([AsyncTestCompleter], (async) => {
// hard to test without hacking zones
}));
});
describe("getError", () => {
it("should return the error when it is present", () => {
var c = new Control("", Validators.required);
var g = new ControlGroup({"one": c});
expect(c.getError("required")).toEqual(true);
expect(g.getError("required", ["one"])).toEqual(true);
});
it("should return null otherwise", () => {
var c = new Control("not empty", Validators.required);
var g = new ControlGroup({"one": c});
expect(c.getError("invalid")).toEqual(null);
expect(g.getError("required", ["one"])).toEqual(null);
expect(g.getError("required", ["invalid"])).toEqual(null);
});
});
describe("asyncValidator", () => {
it("should run the async validator", fakeAsync(() => {
var c = new Control("value");
var g = new ControlGroup({"one": c}, null, null, asyncValidator("expected"));
expect(g.pending).toEqual(true);
tick(1);
expect(g.errors).toEqual({"async": true});
expect(g.pending).toEqual(false);
}));
it("should set the parent group's status to pending", fakeAsync(() => {
var c = new Control("value", null, asyncValidator("expected"));
var g = new ControlGroup({"one": c});
expect(g.pending).toEqual(true);
tick(1);
expect(g.pending).toEqual(false);
}));
it("should run the parent group's async validator when children are pending",
fakeAsync(() => {
var c = new Control("value", null, asyncValidator("expected"));
var g = new ControlGroup({"one": c}, null, null, asyncValidator("expected"));
tick(1);
expect(g.errors).toEqual({"async": true});
expect(g.find(["one"]).errors).toEqual({"async": true});
}));
})
});
describe("ControlArray", () => {
describe("adding/removing", () => {
var a: ControlArray;
var c1, c2, c3;
beforeEach(() => {
a = new ControlArray([]);
c1 = new Control(1);
c2 = new Control(2);
c3 = new Control(3);
});
it("should support pushing", () => {
a.push(c1);
expect(a.length).toEqual(1);
expect(a.controls).toEqual([c1]);
});
it("should support removing", () => {
a.push(c1);
a.push(c2);
a.push(c3);
a.removeAt(1);
expect(a.controls).toEqual([c1, c3]);
});
it("should support inserting", () => {
a.push(c1);
a.push(c3);
a.insert(1, c2);
expect(a.controls).toEqual([c1, c2, c3]);
});
});
describe("value", () => {
it("should be the reduced value of the child controls", () => {
var a = new ControlArray([new Control(1), new Control(2)]);
expect(a.value).toEqual([1, 2]);
});
it("should be an empty array when there are no child controls", () => {
var a = new ControlArray([]);
expect(a.value).toEqual([]);
});
});
describe("errors", () => {
it("should run the validator when the value changes", () => {
var simpleValidator = (c) => c.controls[0].value != "correct" ? {"broken": true} : null;
var c = new Control(null);
var g = new ControlArray([c], simpleValidator);
c.updateValue("correct");
expect(g.valid).toEqual(true);
expect(g.errors).toEqual(null);
c.updateValue("incorrect");
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({"broken": true});
});
});
describe("dirty", () => {
var c: Control;
var a: ControlArray;
beforeEach(() => {
c = new Control('value');
a = new ControlArray([c]);
});
it("should be false after creating a control", () => { expect(a.dirty).toEqual(false); });
it("should be false after changing the value of the control", () => {
c.markAsDirty();
expect(a.dirty).toEqual(true);
});
});
describe("pending", () => {
var c: Control;
var a: ControlArray;
beforeEach(() => {
c = new Control('value');
a = new ControlArray([c]);
});
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it("should be false after creating a control", () => {
expect(c.pending).toEqual(false);
expect(a.pending).toEqual(false);
});
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it("should be true after changing the value of the control", () => {
c.markAsPending();
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expect(c.pending).toEqual(true);
expect(a.pending).toEqual(true);
});
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it("should not update the parent when onlySelf = true", () => {
c.markAsPending({onlySelf: true});
expect(c.pending).toEqual(true);
expect(a.pending).toEqual(false);
});
});
describe("valueChanges", () => {
var a: ControlArray;
var c1, c2;
beforeEach(() => {
c1 = new Control("old1");
c2 = new Control("old2");
a = new ControlArray([c1, c2]);
});
it("should fire an event after the value has been updated",
inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(a.valueChanges, (value) => {
expect(a.value).toEqual(['new1', 'old2']);
expect(value).toEqual(['new1', 'old2']);
async.done();
});
c1.updateValue("new1");
}));
it("should fire an event after the control's observable fired an event",
inject([AsyncTestCompleter], (async) => {
var controlCallbackIsCalled = false;
ObservableWrapper.subscribe(c1.valueChanges,
(value) => { controlCallbackIsCalled = true; });
ObservableWrapper.subscribe(a.valueChanges, (value) => {
expect(controlCallbackIsCalled).toBe(true);
async.done();
});
c1.updateValue("new1");
}));
it("should fire an event when a control is removed",
inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(a.valueChanges, (value) => {
expect(value).toEqual(['old1']);
async.done();
});
a.removeAt(1);
}));
it("should fire an event when a control is added", inject([AsyncTestCompleter], (async) => {
a.removeAt(1);
ObservableWrapper.subscribe(a.valueChanges, (value) => {
expect(value).toEqual(['old1', 'old2']);
async.done();
});
a.push(c2);
}));
});
describe("find", () => {
it("should return null when path is null", () => {
var g = new ControlGroup({});
expect(g.find(null)).toEqual(null);
});
it("should return null when path is empty", () => {
var g = new ControlGroup({});
expect(g.find([])).toEqual(null);
});
it("should return null when path is invalid", () => {
var g = new ControlGroup({});
expect(g.find(["one", "two"])).toEqual(null);
});
it("should return a child of a control group", () => {
var g = new ControlGroup(
{"one": new Control("111"), "nested": new ControlGroup({"two": new Control("222")})});
expect(g.find(["nested", "two"]).value).toEqual("222");
expect(g.find(["one"]).value).toEqual("111");
expect(g.find("nested/two").value).toEqual("222");
expect(g.find("one").value).toEqual("111");
});
it("should return an element of an array", () => {
var g = new ControlGroup({"array": new ControlArray([new Control("111")])});
expect(g.find(["array", 0]).value).toEqual("111");
});
});
describe("asyncValidator", () => {
it("should run the async validator", fakeAsync(() => {
var c = new Control("value");
var g = new ControlArray([c], null, asyncValidator("expected"));
expect(g.pending).toEqual(true);
tick(1);
expect(g.errors).toEqual({"async": true});
expect(g.pending).toEqual(false);
}));
})
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});
});
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}