angular-docs-cn/modules/@angular/router/test/create_url_tree.spec.ts

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import {DefaultUrlSerializer} from '../src/url_serializer';
import {UrlTree, UrlSegment} from '../src/url_tree';
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import {ActivatedRoute, ActivatedRouteSnapshot, advanceActivatedRoute} from '../src/router_state';
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import {PRIMARY_OUTLET, Params} from '../src/shared';
import {createUrlTree} from '../src/create_url_tree';
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import {BehaviorSubject} from 'rxjs/BehaviorSubject';
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describe('createUrlTree', () => {
const serializer = new DefaultUrlSerializer();
it("should navigate to the root", () => {
const p = serializer.parse("/");
const t = create(p.root, p, ["/"]);
expect(serializer.serialize(t)).toEqual("");
});
it("should support nested segments", () => {
const p = serializer.parse("/a/b");
const t = create(p.root, p, ["/one", 11, "two", 22]);
expect(serializer.serialize(t)).toEqual("/one/11/two/22");
});
it("should preserve secondary segments", () => {
const p = serializer.parse("/a/11/b(right:c)");
const t = create(p.root, p, ["/a", 11, 'd']);
expect(serializer.serialize(t)).toEqual("/a/11/d(right:c)");
});
it('should update matrix parameters', () => {
const p = serializer.parse("/a;aa=11");
const t = create(p.root, p, ["/a", {aa: 22, bb: 33}]);
expect(serializer.serialize(t)).toEqual("/a;aa=22;bb=33");
});
it('should create matrix parameters', () => {
const p = serializer.parse("/a");
const t = create(p.root, p, ["/a", {aa: 22, bb: 33}]);
expect(serializer.serialize(t)).toEqual("/a;aa=22;bb=33");
});
it('should create matrix parameters together with other segments', () => {
const p = serializer.parse("/a");
const t = create(p.root, p, ["/a", "/b", {aa: 22, bb: 33}]);
expect(serializer.serialize(t)).toEqual("/a/b;aa=22;bb=33");
});
describe("node reuse", () => {
it('should reuse nodes when path is the same', () => {
const p = serializer.parse("/a/b");
const t = create(p.root, p, ['/a/c']);
expect(t.root).toBe(p.root);
expect(t.firstChild(t.root)).toBe(p.firstChild(p.root));
expect(t.firstChild(<any>t.firstChild(t.root))).not.toBe(p.firstChild(<any>p.firstChild(p.root)));
});
it("should create new node when params are the same", () => {
const p = serializer.parse("/a;x=1");
const t = create(p.root, p, ['/a', {'x': 1}]);
expect(t.firstChild(t.root)).toBe(p.firstChild(p.root));
});
it("should create new node when params are different", () => {
const p = serializer.parse("/a;x=1");
const t = create(p.root, p, ['/a', {'x': 2}]);
expect(t.firstChild(t.root)).not.toBe(p.firstChild(p.root));
});
});
describe("relative navigation", () => {
it("should work", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
const t = create(c, p, ["c2"]);
expect(serializer.serialize(t)).toEqual("/a(left:ap)/c2(left:cp)");
});
it("should work when the first command starts with a ./", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
const t = create(c, p, ["./c2"]);
expect(serializer.serialize(t)).toEqual("/a(left:ap)/c2(left:cp)");
});
it("should work when the first command is ./)", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
const t = create(c, p, ["./", "c2"]);
expect(serializer.serialize(t)).toEqual("/a(left:ap)/c2(left:cp)");
});
it("should work when given params", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
const t = create(c, p, [{'x': 99}]);
expect(serializer.serialize(t)).toEqual("/a(left:ap)/c;x=99(left:cp)");
});
it("should support going to a parent", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
const t = create(c, p, ["../a2"]);
expect(serializer.serialize(t)).toEqual("/a2(left:ap)");
});
it("should support going to a parent (nested case)", () => {
const p = serializer.parse("/a/c");
const c = p.firstChild(<any>p.firstChild(p.root));
const t = create(c, p, ["../c2"]);
expect(serializer.serialize(t)).toEqual("/a/c2");
});
it("should work when given ../", () => {
const p = serializer.parse("/a/c");
const c = p.firstChild(<any>p.firstChild(p.root));
const t = create(c, p, ["../"]);
expect(serializer.serialize(t)).toEqual("/a");
});
it("should navigate to the root", () => {
const p = serializer.parse("/a/c");
const c = p.firstChild(p.root);
const t = create(c, p, ["../"]);
expect(serializer.serialize(t)).toEqual("");
});
it("should support setting matrix params", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
const t = create(c, p, ["../", {'x': 5}]);
expect(serializer.serialize(t)).toEqual("/a;x=5(left:ap)");
});
it("should throw when too many ..", () => {
const p = serializer.parse("/a(left:ap)/c(left:cp)");
const c = p.firstChild(p.root);
expect(() => create(c, p, ["../../"])).toThrowError("Invalid number of '../'");
});
});
it("should set query params", () => {
const p = serializer.parse("/");
const t = create(p.root, p, [], {a: 'hey'});
expect(t.queryParams).toEqual({a: 'hey'});
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});
it("should stringify query params", () => {
const p = serializer.parse("/");
const t = create(p.root, p, [], <any>{a: 1});
expect(t.queryParams).toEqual({a: '1'});
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});
it("should reuse old query params when given undefined", () => {
const p = serializer.parse("/?a=1");
const t = create(p.root, p, [], undefined);
expect(t.queryParams).toEqual({a: '1'});
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});
it("should set fragment", () => {
const p = serializer.parse("/");
const t = create(p.root, p, [], {}, "fragment");
expect(t.fragment).toEqual("fragment");
});
it("should reused old fragment when given undefined", () => {
const p = serializer.parse("/#fragment");
const t = create(p.root, p, [], undefined, undefined);
expect(t.fragment).toEqual("fragment");
});
});
function create(start: UrlSegment | null, tree: UrlTree, commands: any[], queryParams?: Params, fragment?: string) {
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if (!start) {
expect(start).toBeDefined();
}
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const s = new ActivatedRouteSnapshot([], <any>{}, PRIMARY_OUTLET, "someComponent", null, <any>start);
const a = new ActivatedRoute(new BehaviorSubject(null), new BehaviorSubject(null), PRIMARY_OUTLET, "someComponent", s);
advanceActivatedRoute(a);
return createUrlTree(a, tree, commands, queryParams, fragment);
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}