932 lines
31 KiB
JavaScript
932 lines
31 KiB
JavaScript
import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach, IS_DARTIUM} from 'angular2/test_lib';
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import {isPresent, isBlank, isJsObject, BaseException, FunctionWrapper} from 'angular2/src/facade/lang';
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import {List, ListWrapper, MapWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
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import {Parser} from 'angular2/src/change_detection/parser/parser';
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import {Lexer} from 'angular2/src/change_detection/parser/lexer';
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import {Locals} from 'angular2/src/change_detection/parser/locals';
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import {ChangeDispatcher, DynamicChangeDetector, ChangeDetectionError, BindingRecord, DirectiveRecord,
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PipeRegistry, Pipe, NO_CHANGE, CHECK_ALWAYS, CHECK_ONCE, CHECKED, DETACHED, ON_PUSH, DEFAULT} from 'angular2/change_detection';
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import {JitProtoChangeDetector, DynamicProtoChangeDetector} from 'angular2/src/change_detection/proto_change_detector';
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export function main() {
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describe("change detection", () => {
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StringMapWrapper.forEach(
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{ "dynamic": (registry = null, strategy = null) => new DynamicProtoChangeDetector(registry, strategy),
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"JIT": (registry = null, strategy = null) => new JitProtoChangeDetector(registry, strategy)
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}, (createProtoChangeDetector, name) => {
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if (name == "JIT" && IS_DARTIUM) return;
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function ast(exp:string, location:string = 'location') {
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var parser = new Parser(new Lexer());
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return parser.parseBinding(exp, location);
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}
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function dirs(directives:List) {
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return new FakeDirectives(directives, []);
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}
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function convertLocalsToVariableBindings(locals) {
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var variableBindings = [];
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var loc = locals;
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while(isPresent(loc)) {
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MapWrapper.forEach(loc.current, (v, k) => ListWrapper.push(variableBindings, k));
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loc = loc.parent;
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}
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return variableBindings;
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}
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function createChangeDetector(propName:string, exp:string, context = null, locals = null, registry = null) {
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var pcd = createProtoChangeDetector(registry);
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var dispatcher = new TestDispatcher();
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var variableBindings = convertLocalsToVariableBindings(locals);
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var records = [BindingRecord.createForElement(ast(exp), 0, propName)];
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var cd = pcd.instantiate(dispatcher, records, variableBindings, []);
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cd.hydrate(context, locals, null);
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return {"changeDetector" : cd, "dispatcher" : dispatcher};
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}
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function executeWatch(memo:string, exp:string, context = null, locals = null) {
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var res = createChangeDetector(memo, exp, context, locals);
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res["changeDetector"].detectChanges();
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return res["dispatcher"].log;
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}
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function instantiate(protoChangeDetector, dispatcher, bindings, directiveRecords = null) {
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if (isBlank(directiveRecords)) directiveRecords = [];
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return protoChangeDetector.instantiate(dispatcher, bindings, null, directiveRecords);
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}
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describe(`${name} change detection`, () => {
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var dispatcher;
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beforeEach(() => {
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dispatcher = new TestDispatcher();
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});
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it('should do simple watching', () => {
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var person = new Person("misko");
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var c = createChangeDetector('name', 'name', person);
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var cd = c["changeDetector"];
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var dispatcher = c["dispatcher"];
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cd.detectChanges();
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expect(dispatcher.log).toEqual(['name=misko']);
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dispatcher.clear();
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cd.detectChanges();
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expect(dispatcher.log).toEqual([]);
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dispatcher.clear();
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person.name = "Misko";
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cd.detectChanges();
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expect(dispatcher.log).toEqual(['name=Misko']);
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});
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it('should report all changes on the first run including uninitialized values', () => {
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expect(executeWatch('value', 'value', new Uninitialized())).toEqual(['value=null']);
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});
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it('should report all changes on the first run including null values', () => {
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var td = new TestData(null);
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expect(executeWatch('a', 'a', td)).toEqual(['a=null']);
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});
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it("should support literals", () => {
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expect(executeWatch('const', '10')).toEqual(['const=10']);
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expect(executeWatch('const', '"str"')).toEqual(['const=str']);
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expect(executeWatch('const', '"a\n\nb"')).toEqual(['const=a\n\nb']);
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});
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it('simple chained property access', () => {
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var address = new Address('Grenoble');
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var person = new Person('Victor', address);
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expect(executeWatch('address.city', 'address.city', person))
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.toEqual(['address.city=Grenoble']);
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});
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it("should support method calls", () => {
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var person = new Person('Victor');
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expect(executeWatch('m', 'sayHi("Jim")', person)).toEqual(['m=Hi, Jim']);
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});
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it("should support function calls", () => {
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var td = new TestData(() => (a) => a);
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expect(executeWatch('value', 'a()(99)', td)).toEqual(['value=99']);
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});
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it("should support chained method calls", () => {
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var person = new Person('Victor');
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var td = new TestData(person);
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expect(executeWatch('m', 'a.sayHi("Jim")', td)).toEqual(['m=Hi, Jim']);
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});
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it("should support literal array", () => {
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var c = createChangeDetector('array', '[1,2]');
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c["changeDetector"].detectChanges();
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expect(c["dispatcher"].loggedValues).toEqual([[1, 2]]);
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c = createChangeDetector('array', '[1,a]', new TestData(2));
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c["changeDetector"].detectChanges();
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expect(c["dispatcher"].loggedValues).toEqual([[1, 2]]);
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});
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it("should support literal maps", () => {
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var c = createChangeDetector('map', '{z:1}');
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c["changeDetector"].detectChanges();
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expect(c["dispatcher"].loggedValues[0]['z']).toEqual(1);
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c = createChangeDetector('map', '{z:a}', new TestData(1));
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c["changeDetector"].detectChanges();
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expect(c["dispatcher"].loggedValues[0]['z']).toEqual(1);
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});
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it("should support binary operations", () => {
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expect(executeWatch('exp', '10 + 2')).toEqual(['exp=12']);
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expect(executeWatch('exp', '10 - 2')).toEqual(['exp=8']);
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expect(executeWatch('exp', '10 * 2')).toEqual(['exp=20']);
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expect(executeWatch('exp', '10 / 2')).toEqual([`exp=${5.0}`]); //dart exp=5.0, js exp=5
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expect(executeWatch('exp', '11 % 2')).toEqual(['exp=1']);
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expect(executeWatch('exp', '1 == 1')).toEqual(['exp=true']);
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expect(executeWatch('exp', '1 != 1')).toEqual(['exp=false']);
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expect(executeWatch('exp', '1 < 2')).toEqual(['exp=true']);
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expect(executeWatch('exp', '2 < 1')).toEqual(['exp=false']);
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expect(executeWatch('exp', '2 > 1')).toEqual(['exp=true']);
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expect(executeWatch('exp', '2 < 1')).toEqual(['exp=false']);
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expect(executeWatch('exp', '1 <= 2')).toEqual(['exp=true']);
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expect(executeWatch('exp', '2 <= 2')).toEqual(['exp=true']);
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expect(executeWatch('exp', '2 <= 1')).toEqual(['exp=false']);
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expect(executeWatch('exp', '2 >= 1')).toEqual(['exp=true']);
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expect(executeWatch('exp', '2 >= 2')).toEqual(['exp=true']);
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expect(executeWatch('exp', '1 >= 2')).toEqual(['exp=false']);
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expect(executeWatch('exp', 'true && true')).toEqual(['exp=true']);
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expect(executeWatch('exp', 'true && false')).toEqual(['exp=false']);
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expect(executeWatch('exp', 'true || false')).toEqual(['exp=true']);
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expect(executeWatch('exp', 'false || false')).toEqual(['exp=false']);
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});
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it("should support negate", () => {
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expect(executeWatch('exp', '!true')).toEqual(['exp=false']);
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expect(executeWatch('exp', '!!true')).toEqual(['exp=true']);
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});
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it("should support conditionals", () => {
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expect(executeWatch('m', '1 < 2 ? 1 : 2')).toEqual(['m=1']);
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expect(executeWatch('m', '1 > 2 ? 1 : 2')).toEqual(['m=2']);
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});
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describe("keyed access", () => {
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it("should support accessing a list item", () => {
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expect(executeWatch('array[0]', '["foo", "bar"][0]')).toEqual(['array[0]=foo']);
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});
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it("should support accessing a map item", () => {
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expect(executeWatch('map[foo]', '{"foo": "bar"}["foo"]')).toEqual(['map[foo]=bar']);
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});
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});
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it("should support interpolation", () => {
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var parser = new Parser(new Lexer());
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var pcd = createProtoChangeDetector();
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var ast = parser.parseInterpolation("B{{a}}A", "location");
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var cd = instantiate(pcd, dispatcher, [BindingRecord.createForElement(ast, 0, "memo")]);
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cd.hydrate(new TestData("value"), null, null);
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cd.detectChanges();
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expect(dispatcher.log).toEqual(["memo=BvalueA"]);
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});
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describe("change notification", () => {
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describe("simple checks", () => {
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it("should pass a change record to the dispatcher", () => {
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var person = new Person('bob');
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var c = createChangeDetector('name', 'name', person);
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var cd = c["changeDetector"];
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var dispatcher = c["dispatcher"];
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cd.detectChanges();
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expect(dispatcher.loggedValues).toEqual(['bob']);
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});
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});
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describe("pipes", () => {
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it("should pass a change record to the dispatcher", () => {
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var registry = new FakePipeRegistry('pipe', () => new CountingPipe());
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var person = new Person('bob');
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var c = createChangeDetector('name', 'name | pipe', person, null, registry);
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var cd = c["changeDetector"];
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var dispatcher = c["dispatcher"];
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cd.detectChanges();
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expect(dispatcher.loggedValues).toEqual(['bob state:0']);
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});
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});
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describe("updating directives", () => {
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var dirRecord1 = new DirectiveRecord(0, 0, true, true, DEFAULT);
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var dirRecord2 = new DirectiveRecord(0, 1, true, true, DEFAULT);
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var dirRecordNoCallbacks = new DirectiveRecord(0, 0, false, false, DEFAULT);
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function updateA(exp:string, dirRecord) {
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return BindingRecord.createForDirective(ast(exp), "a", (o,v) => o.a = v, dirRecord);
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}
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function updateB(exp:string, dirRecord) {
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return BindingRecord.createForDirective(ast(exp), "b", (o,v) => o.b = v, dirRecord);
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}
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var directive1;
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var directive2;
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beforeEach(() => {
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directive1 = new TestDirective();
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directive2 = new TestDirective();
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});
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it("should happen directly, without invoking the dispatcher", () => {
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var pcd = createProtoChangeDetector();
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var cd = instantiate(pcd, dispatcher, [updateA("42", dirRecord1)],
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[dirRecord1]);
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cd.hydrate(null, null, dirs([directive1]));
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cd.detectChanges();
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expect(dispatcher.loggedValues).toEqual([]);
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expect(directive1.a).toEqual(42);
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});
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describe("onChange", () => {
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it("should notify the directive when a group of records changes", () => {
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var pcd = createProtoChangeDetector();
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var cd = instantiate(pcd, dispatcher, [
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updateA("1", dirRecord1),
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updateB("2", dirRecord1),
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updateA("3", dirRecord2)
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], [dirRecord1, dirRecord2]);
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cd.hydrate(null, null, dirs([directive1, directive2]));
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cd.detectChanges();
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expect(directive1.changes).toEqual({'a': 1, 'b': 2});
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expect(directive2.changes).toEqual({'a': 3});
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});
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it("should not call onChange when callOnChange is false", () => {
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var pcd = createProtoChangeDetector();
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var cd = instantiate(pcd, dispatcher, [
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updateA("1", dirRecordNoCallbacks)
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], [dirRecordNoCallbacks]);
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cd.hydrate(null, null, dirs([directive1]));
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cd.detectChanges();
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expect(directive1.changes).toEqual(null);
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});
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});
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describe("onAllChangesDone", () => {
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it("should be called after processing all the children", () => {
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var pcd = createProtoChangeDetector();
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var cd = instantiate(pcd, dispatcher, [], [dirRecord1, dirRecord2]);
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cd.hydrate(null, null, dirs([directive1, directive2]));
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cd.detectChanges();
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expect(directive1.onChangesDoneCalled).toBe(true);
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expect(directive2.onChangesDoneCalled).toBe(true);
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});
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it("should not be called when onAllChangesDone is false", () => {
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var pcd = createProtoChangeDetector();
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var cd = instantiate(pcd, dispatcher, [
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updateA("1", dirRecordNoCallbacks)
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], [dirRecordNoCallbacks]);
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cd.hydrate(null, null, dirs([directive1]));
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cd.detectChanges();
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expect(directive1.onChangesDoneCalled).toEqual(false);
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});
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it("should be called in reverse order so the child is always notified before the parent", () => {
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var pcd = createProtoChangeDetector();
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var cd = instantiate(pcd, dispatcher, [], [dirRecord1, dirRecord2]);
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var onChangesDoneCalls = [];
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var td1;
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td1 = new TestDirective(() => ListWrapper.push(onChangesDoneCalls, td1));
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var td2;
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td2 = new TestDirective(() => ListWrapper.push(onChangesDoneCalls, td2));
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cd.hydrate(null, null, dirs([td1, td2]));
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cd.detectChanges();
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expect(onChangesDoneCalls).toEqual([td2, td1]);
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});
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it("should be called before processing shadow dom children", () => {
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var pcd = createProtoChangeDetector();
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var shadowDomChildPCD = createProtoChangeDetector();
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var parent = pcd.instantiate(dispatcher, [], null, [dirRecord1]);
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var child = shadowDomChildPCD.instantiate(dispatcher,
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[updateA("1", dirRecord1)], null, [dirRecord1]);
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parent.addShadowDomChild(child);
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var directiveInShadowDom = new TestDirective();
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var parentDirective = new TestDirective(() => {
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expect(directiveInShadowDom.a).toBe(null);
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});
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parent.hydrate(null, null, dirs([parentDirective]));
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child.hydrate(null, null, dirs([directiveInShadowDom]));
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parent.detectChanges();
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});
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});
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});
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});
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describe("enforce no new changes", () => {
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it("should throw when a record gets changed after it has been checked", () => {
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var pcd = createProtoChangeDetector();
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var dispatcher = new TestDispatcher();
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var cd = instantiate(pcd, dispatcher, [
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BindingRecord.createForElement(ast("a"), 0, "a")
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]);
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cd.hydrate(new TestData('value'), null, null);
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expect(() => {
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cd.checkNoChanges();
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}).toThrowError(new RegExp("Expression 'a in location' has changed after it was checked"));
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});
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});
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//TODO vsavkin: implement it
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describe("error handling", () => {
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xit("should wrap exceptions into ChangeDetectionError", () => {
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var pcd = createProtoChangeDetector();
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var cd = pcd.instantiate(new TestDispatcher(), [
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BindingRecord.createForElement(ast("invalidProp"), 0, "a")
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], null, []);
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cd.hydrate(null, null);
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try {
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cd.detectChanges();
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throw new BaseException("fail");
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} catch (e) {
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expect(e).toBeAnInstanceOf(ChangeDetectionError);
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expect(e.location).toEqual("invalidProp in someComponent");
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}
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});
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});
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describe("Locals", () => {
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it('should read a value from locals', () => {
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var locals = new Locals(null,
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MapWrapper.createFromPairs([["key", "value"]]));
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expect(executeWatch('key', 'key', null, locals))
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.toEqual(['key=value']);
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});
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it('should invoke a function from local', () => {
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var locals = new Locals(null,
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MapWrapper.createFromPairs([["key", () => "value"]]));
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expect(executeWatch('key', 'key()', null, locals))
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.toEqual(['key=value']);
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});
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it('should handle nested locals', () => {
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var nested = new Locals(null,
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MapWrapper.createFromPairs([["key", "value"]]));
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var locals = new Locals(nested, MapWrapper.create());
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expect(executeWatch('key', 'key', null, locals))
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.toEqual(['key=value']);
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});
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it("should fall back to a regular field read when the locals map" +
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"does not have the requested field", () => {
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var locals = new Locals(null,
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MapWrapper.createFromPairs([["key", "value"]]));
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expect(executeWatch('name', 'name', new Person("Jim"), locals))
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.toEqual(['name=Jim']);
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});
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});
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describe("handle children", () => {
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var parent, child;
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beforeEach(() => {
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var protoParent = createProtoChangeDetector();
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parent = instantiate(protoParent, null, []);
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var protoChild = createProtoChangeDetector();
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child = instantiate(protoChild, null, []);
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});
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it("should add light dom children", () => {
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parent.addChild(child);
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expect(parent.lightDomChildren.length).toEqual(1);
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expect(parent.lightDomChildren[0]).toBe(child);
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});
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it("should add shadow dom children", () => {
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parent.addShadowDomChild(child);
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expect(parent.shadowDomChildren.length).toEqual(1);
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expect(parent.shadowDomChildren[0]).toBe(child);
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});
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it("should remove light dom children", () => {
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parent.addChild(child);
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parent.removeChild(child);
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expect(parent.lightDomChildren).toEqual([]);
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});
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it("should remove shadow dom children", () => {
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parent.addShadowDomChild(child);
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parent.removeShadowDomChild(child);
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expect(parent.shadowDomChildren.length).toEqual(0);
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});
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});
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});
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describe("mode", () => {
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it("should set the mode to CHECK_ALWAYS when the default change detection is used", () => {
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var proto = createProtoChangeDetector(null, DEFAULT);
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var cd = proto.instantiate(null, [], [], []);
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expect(cd.mode).toEqual(null);
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|
|
cd.hydrate(null, null, null);
|
|
|
|
expect(cd.mode).toEqual(CHECK_ALWAYS);
|
|
});
|
|
|
|
it("should set the mode to CHECK_ONCE when the push change detection is used", () => {
|
|
var proto = createProtoChangeDetector(null, ON_PUSH);
|
|
var cd = proto.instantiate(null, [], [], []);
|
|
cd.hydrate(null, null, null);
|
|
|
|
expect(cd.mode).toEqual(CHECK_ONCE);
|
|
});
|
|
|
|
it("should not check a detached change detector", () => {
|
|
var c = createChangeDetector('name', 'a', new TestData("value"));
|
|
var cd = c["changeDetector"];
|
|
var dispatcher = c["dispatcher"];
|
|
|
|
cd.mode = DETACHED;
|
|
cd.detectChanges();
|
|
|
|
expect(dispatcher.log).toEqual([]);
|
|
});
|
|
|
|
it("should not check a checked change detector", () => {
|
|
var c = createChangeDetector('name', 'a', new TestData("value"));
|
|
var cd = c["changeDetector"];
|
|
var dispatcher = c["dispatcher"];
|
|
|
|
cd.mode = CHECKED;
|
|
cd.detectChanges();
|
|
|
|
expect(dispatcher.log).toEqual([]);
|
|
});
|
|
|
|
it("should change CHECK_ONCE to CHECKED", () => {
|
|
var cd = instantiate(createProtoChangeDetector(), null, []);
|
|
cd.mode = CHECK_ONCE;
|
|
|
|
cd.detectChanges();
|
|
|
|
expect(cd.mode).toEqual(CHECKED);
|
|
});
|
|
|
|
it("should not change the CHECK_ALWAYS", () => {
|
|
var cd = instantiate(createProtoChangeDetector(), null, []);
|
|
cd.mode = CHECK_ALWAYS;
|
|
|
|
cd.detectChanges();
|
|
|
|
expect(cd.mode).toEqual(CHECK_ALWAYS);
|
|
});
|
|
|
|
describe("marking ON_PUSH detectors as CHECK_ONCE after an update", () => {
|
|
var checkedDetector;
|
|
var dirRecordWithOnPush;
|
|
var updateDirWithOnPushRecord;
|
|
var directives;
|
|
|
|
beforeEach(() => {
|
|
var proto = createProtoChangeDetector(null, ON_PUSH);
|
|
checkedDetector = instantiate(proto, null, [], []);
|
|
checkedDetector.hydrate(null, null, null);
|
|
checkedDetector.mode = CHECKED;
|
|
|
|
// this directive is a component with ON_PUSH change detection
|
|
dirRecordWithOnPush = new DirectiveRecord(0, 0, false, false, ON_PUSH);
|
|
|
|
// a record updating a component
|
|
updateDirWithOnPushRecord =
|
|
BindingRecord.createForDirective(ast("42"), "a", (o,v) => o.a = v, dirRecordWithOnPush);
|
|
|
|
var targetDirective = new TestData(null);
|
|
directives = new FakeDirectives([targetDirective], [checkedDetector]);
|
|
});
|
|
|
|
it("should set the mode to CHECK_ONCE when a binding is updated", () => {
|
|
var proto = createProtoChangeDetector(null);
|
|
|
|
var cd = instantiate(proto, null, [updateDirWithOnPushRecord], [dirRecordWithOnPush]);
|
|
cd.hydrate(null, null, directives);
|
|
|
|
expect(checkedDetector.mode).toEqual(CHECKED);
|
|
|
|
// evaluate the record, update the targetDirective, and mark its detector as CHECK_ONCE
|
|
cd.detectChanges();
|
|
|
|
expect(checkedDetector.mode).toEqual(CHECK_ONCE);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("markPathToRootAsCheckOnce", () => {
|
|
function changeDetector(mode, parent) {
|
|
var cd = instantiate(createProtoChangeDetector(), null, []);
|
|
cd.mode = mode;
|
|
if (isPresent(parent)) parent.addChild(cd);
|
|
return cd;
|
|
}
|
|
|
|
it("should mark all checked detectors as CHECK_ONCE " +
|
|
"until reaching a detached one", () => {
|
|
|
|
var root = changeDetector(CHECK_ALWAYS, null);
|
|
var disabled = changeDetector(DETACHED, root);
|
|
var parent = changeDetector(CHECKED, disabled);
|
|
var checkAlwaysChild = changeDetector(CHECK_ALWAYS, parent);
|
|
var checkOnceChild = changeDetector(CHECK_ONCE, checkAlwaysChild);
|
|
var checkedChild = changeDetector(CHECKED, checkOnceChild);
|
|
|
|
checkedChild.markPathToRootAsCheckOnce();
|
|
|
|
expect(root.mode).toEqual(CHECK_ALWAYS);
|
|
expect(disabled.mode).toEqual(DETACHED);
|
|
expect(parent.mode).toEqual(CHECK_ONCE);
|
|
expect(checkAlwaysChild.mode).toEqual(CHECK_ALWAYS);
|
|
expect(checkOnceChild.mode).toEqual(CHECK_ONCE);
|
|
expect(checkedChild.mode).toEqual(CHECK_ONCE);
|
|
});
|
|
});
|
|
|
|
describe("hydration", () => {
|
|
it("should be able to rehydrate a change detector", () => {
|
|
var c = createChangeDetector("memo", "name");
|
|
var cd = c["changeDetector"];
|
|
|
|
cd.hydrate("some context", null, null);
|
|
expect(cd.hydrated()).toBe(true);
|
|
|
|
cd.dehydrate();
|
|
expect(cd.hydrated()).toBe(false);
|
|
|
|
cd.hydrate("other context", null, null);
|
|
expect(cd.hydrated()).toBe(true);
|
|
});
|
|
|
|
it("should destroy all active pipes during dehyration", () => {
|
|
var pipe = new OncePipe();
|
|
var registry = new FakePipeRegistry('pipe', () => pipe);
|
|
var c = createChangeDetector("memo", "name | pipe", new Person('bob'), null, registry);
|
|
var cd = c["changeDetector"];
|
|
|
|
cd.detectChanges();
|
|
|
|
cd.dehydrate();
|
|
|
|
expect(pipe.destroyCalled).toBe(true);
|
|
});
|
|
});
|
|
|
|
describe("pipes", () => {
|
|
it("should support pipes", () => {
|
|
var registry = new FakePipeRegistry('pipe', () => new CountingPipe());
|
|
var ctx = new Person("Megatron");
|
|
|
|
var c = createChangeDetector("memo", "name | pipe", ctx, null, registry);
|
|
var cd = c["changeDetector"];
|
|
var dispatcher = c["dispatcher"];
|
|
|
|
cd.detectChanges();
|
|
|
|
expect(dispatcher.log).toEqual(['memo=Megatron state:0']);
|
|
|
|
dispatcher.clear();
|
|
cd.detectChanges();
|
|
|
|
expect(dispatcher.log).toEqual(['memo=Megatron state:1']);
|
|
});
|
|
|
|
it("should lookup pipes in the registry when the context is not supported", () => {
|
|
var registry = new FakePipeRegistry('pipe', () => new OncePipe());
|
|
var ctx = new Person("Megatron");
|
|
|
|
var c = createChangeDetector("memo", "name | pipe", ctx, null, registry);
|
|
var cd = c["changeDetector"];
|
|
|
|
cd.detectChanges();
|
|
|
|
expect(registry.numberOfLookups).toEqual(1);
|
|
|
|
ctx.name = "Optimus Prime";
|
|
cd.detectChanges();
|
|
|
|
expect(registry.numberOfLookups).toEqual(2);
|
|
});
|
|
|
|
it("should invoke onDestroy on a pipe before switching to another one", () => {
|
|
var pipe = new OncePipe();
|
|
var registry = new FakePipeRegistry('pipe', () => pipe);
|
|
var ctx = new Person("Megatron");
|
|
|
|
var c = createChangeDetector("memo", "name | pipe", ctx, null, registry);
|
|
var cd = c["changeDetector"];
|
|
|
|
cd.detectChanges();
|
|
ctx.name = "Optimus Prime";
|
|
cd.detectChanges();
|
|
|
|
expect(pipe.destroyCalled).toEqual(true);
|
|
});
|
|
|
|
it("should inject the ChangeDetectorRef " +
|
|
"of the encompassing component into a pipe", () => {
|
|
|
|
var registry = new FakePipeRegistry('pipe', () => new IdentityPipe());
|
|
var c = createChangeDetector("memo", "name | pipe", new Person('bob'), null, registry);
|
|
var cd = c["changeDetector"];
|
|
|
|
cd.detectChanges();
|
|
|
|
expect(registry.cdRef).toBe(cd.ref);
|
|
});
|
|
});
|
|
|
|
it("should do nothing when returns NO_CHANGE", () => {
|
|
var registry = new FakePipeRegistry('pipe', () => new IdentityPipe())
|
|
var ctx = new Person("Megatron");
|
|
|
|
var c = createChangeDetector("memo", "name | pipe", ctx, null, registry);
|
|
var cd = c["changeDetector"];
|
|
var dispatcher = c["dispatcher"];
|
|
|
|
cd.detectChanges();
|
|
cd.detectChanges();
|
|
|
|
expect(dispatcher.log).toEqual(['memo=Megatron']);
|
|
|
|
ctx.name = "Optimus Prime";
|
|
dispatcher.clear();
|
|
cd.detectChanges();
|
|
|
|
expect(dispatcher.log).toEqual(['memo=Optimus Prime']);
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
class CountingPipe extends Pipe {
|
|
state:number;
|
|
|
|
constructor() {
|
|
super();
|
|
this.state = 0;
|
|
}
|
|
|
|
supports(newValue) {
|
|
return true;
|
|
}
|
|
|
|
transform(value) {
|
|
return `${value} state:${this.state ++}`;
|
|
}
|
|
}
|
|
|
|
class OncePipe extends Pipe {
|
|
called:boolean;
|
|
destroyCalled:boolean;
|
|
|
|
constructor() {
|
|
super();
|
|
this.called = false;
|
|
this.destroyCalled = false;
|
|
}
|
|
|
|
supports(newValue) {
|
|
return !this.called;
|
|
}
|
|
|
|
onDestroy() {
|
|
this.destroyCalled = true;
|
|
}
|
|
|
|
transform(value) {
|
|
this.called = true;
|
|
return value;
|
|
}
|
|
}
|
|
|
|
class IdentityPipe extends Pipe {
|
|
state:any;
|
|
|
|
supports(newValue) {
|
|
return true;
|
|
}
|
|
|
|
transform(value) {
|
|
if (this.state === value) {
|
|
return NO_CHANGE;
|
|
} else {
|
|
this.state = value;
|
|
return value;
|
|
}
|
|
}
|
|
}
|
|
|
|
class FakePipeRegistry extends PipeRegistry {
|
|
numberOfLookups:number;
|
|
pipeType:string;
|
|
factory:Function;
|
|
cdRef:any;
|
|
|
|
constructor(pipeType, factory) {
|
|
super({});
|
|
this.pipeType = pipeType;
|
|
this.factory = factory;
|
|
this.numberOfLookups = 0;
|
|
}
|
|
|
|
get(type:string, obj, cdRef) {
|
|
if (type != this.pipeType) return null;
|
|
this.numberOfLookups ++;
|
|
this.cdRef = cdRef;
|
|
return this.factory();
|
|
}
|
|
}
|
|
|
|
class TestDirective {
|
|
a;
|
|
b;
|
|
changes;
|
|
onChangesDoneCalled;
|
|
onChangesDoneSpy;
|
|
|
|
constructor(onChangesDoneSpy = null) {
|
|
this.onChangesDoneCalled = false;
|
|
this.onChangesDoneSpy = onChangesDoneSpy;
|
|
this.a = null;
|
|
this.b = null;
|
|
this.changes = null;
|
|
}
|
|
|
|
onChange(changes) {
|
|
var r = {};
|
|
StringMapWrapper.forEach(changes, (c, key) => r[key] = c.currentValue);
|
|
this.changes = r;
|
|
}
|
|
|
|
onAllChangesDone() {
|
|
this.onChangesDoneCalled = true;
|
|
if(isPresent(this.onChangesDoneSpy)) {
|
|
this.onChangesDoneSpy();
|
|
}
|
|
}
|
|
}
|
|
|
|
class Person {
|
|
name:string;
|
|
age:number;
|
|
address:Address;
|
|
constructor(name:string, address:Address = null) {
|
|
this.name = name;
|
|
this.address = address;
|
|
}
|
|
|
|
sayHi(m) {
|
|
return `Hi, ${m}`;
|
|
}
|
|
|
|
toString():string {
|
|
var address = this.address == null ? '' : ' address=' + this.address.toString();
|
|
|
|
return 'name=' + this.name + address;
|
|
}
|
|
}
|
|
|
|
class Address {
|
|
city:string;
|
|
constructor(city:string) {
|
|
this.city = city;
|
|
}
|
|
|
|
toString():string {
|
|
return this.city;
|
|
}
|
|
}
|
|
|
|
class Uninitialized {
|
|
value:any;
|
|
}
|
|
|
|
class TestData {
|
|
a;
|
|
|
|
constructor(a) {
|
|
this.a = a;
|
|
}
|
|
}
|
|
|
|
class FakeDirectives {
|
|
directives:List;
|
|
detectors:List;
|
|
|
|
constructor(directives:List, detectors:List) {
|
|
this.directives = directives;
|
|
this.detectors = detectors;
|
|
}
|
|
|
|
getDirectiveFor(directiveRecord:DirectiveRecord) {
|
|
return this.directives[directiveRecord.directiveIndex];
|
|
}
|
|
|
|
getDetectorFor(directiveRecord:DirectiveRecord) {
|
|
return this.detectors[directiveRecord.directiveIndex];
|
|
}
|
|
}
|
|
|
|
class TestDispatcher extends ChangeDispatcher {
|
|
log:List;
|
|
loggedValues:List;
|
|
|
|
constructor() {
|
|
super();
|
|
this.clear();
|
|
}
|
|
|
|
clear() {
|
|
this.log = ListWrapper.create();
|
|
this.loggedValues = ListWrapper.create();
|
|
}
|
|
|
|
notifyOnBinding(binding, value) {
|
|
ListWrapper.push(this.log, `${binding.propertyName}=${this._asString(value)}`);
|
|
ListWrapper.push(this.loggedValues, value);
|
|
}
|
|
|
|
_asString(value) {
|
|
return (isBlank(value) ? 'null' : value.toString());
|
|
}
|
|
} |