angular-cn/packages/core/test/view/query_spec.ts

401 lines
14 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {ElementRef, QueryList, TemplateRef, ViewContainerRef} from '@angular/core';
import {getDebugContext} from '@angular/core/src/errors';
import {anchorDef, asElementData, asProviderData, attachEmbeddedView, detachEmbeddedView, directiveDef, elementDef, NodeDef, NodeFlags, QueryBindingType, queryDef, QueryValueType, Services} from '@angular/core/src/view/index';
import {compViewDef, compViewDefFactory, createAndGetRootNodes, createEmbeddedView} from './helper';
{
describe(`Query Views`, () => {
const someQueryId = 1;
class AService {}
class QueryService {
// TODO(issue/24571): remove '!'.
a!: QueryList<AService>;
}
function contentQueryProviders(checkIndex: number) {
return [
directiveDef(checkIndex, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.All})
];
}
const cQPLength = contentQueryProviders(0).length;
// nodes first checkIndex should be 1 (to account for the `queryDef`
function compViewQueryProviders(checkIndex: number, extraChildCount: number, nodes: NodeDef[]) {
return [
elementDef(
checkIndex, NodeFlags.None, null, null, 1 + extraChildCount, 'div', null, null, null,
null, () => compViewDef([
queryDef(
NodeFlags.TypeViewQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.All}),
...nodes
])),
directiveDef(
checkIndex + 1,
NodeFlags.Component,
null!,
0,
QueryService,
[],
null!,
null!,
),
];
}
const cVQLength = compViewQueryProviders(0, 0, []).length;
function aServiceProvider(checkIndex: number) {
return directiveDef(
checkIndex, NodeFlags.None, [[someQueryId, QueryValueType.Provider]], 0, AService, []);
}
describe('content queries', () => {
it('should query providers on the same element and child elements', () => {
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 5, 'div'),
...contentQueryProviders(1),
aServiceProvider(1 + cQPLength),
elementDef(2 + cQPLength, NodeFlags.None, null, null, 1, 'div'),
aServiceProvider(3 + cQPLength),
]));
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a).toBeUndefined();
Services.checkAndUpdateView(view);
const as = qs.a.toArray();
expect(as.length).toBe(2);
expect(as [0]).toBe(asProviderData(view, 3).instance);
expect(as [1]).toBe(asProviderData(view, 5).instance);
});
it('should not query providers on sibling or parent elements', () => {
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 6, 'div'),
aServiceProvider(1),
elementDef(2, NodeFlags.None, null, null, 2, 'div'),
...contentQueryProviders(3),
elementDef(3 + cQPLength, NodeFlags.None, null, null, 1, 'div'),
aServiceProvider(4 + cQPLength),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 3).instance;
expect(qs.a.length).toBe(0);
});
});
describe('view queries', () => {
it('should query providers in the view', () => {
const {view} = createAndGetRootNodes(compViewDef([
...compViewQueryProviders(
0, 0,
[
elementDef(1, NodeFlags.None, null, null, 1, 'span'),
aServiceProvider(2),
]),
]));
Services.checkAndUpdateView(view);
const comp: QueryService = asProviderData(view, 1).instance;
const compView = asElementData(view, 0).componentView;
expect(comp.a.length).toBe(1);
expect(comp.a.first).toBe(asProviderData(compView, 2).instance);
});
it('should not query providers on the host element', () => {
const {view} = createAndGetRootNodes(compViewDef([
...compViewQueryProviders(0, 1, [elementDef(1, NodeFlags.None, null, null, 0, 'span')]),
aServiceProvider(cVQLength),
]));
Services.checkAndUpdateView(view);
const comp: QueryService = asProviderData(view, 1).instance;
expect(comp.a.length).toBe(0);
});
});
describe('embedded views', () => {
it('should query providers in embedded views', () => {
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 5, 'div'),
...contentQueryProviders(1),
anchorDef(NodeFlags.EmbeddedViews, null, null, 2, null, compViewDefFactory([
elementDef(0, NodeFlags.None, null, null, 1, 'div'),
aServiceProvider(1),
])),
...contentQueryProviders(2 + cQPLength),
]));
const childView = createEmbeddedView(view, view.def.nodes[3]);
attachEmbeddedView(view, asElementData(view, 3), 0, childView);
Services.checkAndUpdateView(view);
// queries on parent elements of anchors
const qs1: QueryService = asProviderData(view, 1).instance;
expect(qs1.a.length).toBe(1);
expect(qs1.a.first instanceof AService).toBe(true);
// queries on the anchor
const qs2: QueryService = asProviderData(view, 4).instance;
expect(qs2.a.length).toBe(1);
expect(qs2.a.first instanceof AService).toBe(true);
});
it('should query providers in embedded views only at the template declaration', () => {
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 3, 'div'),
...contentQueryProviders(1),
anchorDef(NodeFlags.EmbeddedViews, null, null, 0, null, compViewDefFactory([
elementDef(0, NodeFlags.None, null, null, 1, 'div'),
aServiceProvider(1),
])),
elementDef(2 + cQPLength, NodeFlags.None, null, null, 3, 'div'),
...contentQueryProviders(3 + cQPLength),
anchorDef(NodeFlags.EmbeddedViews, null, null, 0),
]));
const childView = createEmbeddedView(view, view.def.nodes[3]);
// attach at a different place than the one where the template was defined
attachEmbeddedView(view, asElementData(view, 7), 0, childView);
Services.checkAndUpdateView(view);
// query on the declaration place
const qs1: QueryService = asProviderData(view, 1).instance;
expect(qs1.a.length).toBe(1);
expect(qs1.a.first instanceof AService).toBe(true);
// query on the attach place
const qs2: QueryService = asProviderData(view, 5).instance;
expect(qs2.a.length).toBe(0);
});
it('should update content queries if embedded views are added or removed', () => {
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 3, 'div'),
...contentQueryProviders(1),
anchorDef(NodeFlags.EmbeddedViews, null, null, 0, null, compViewDefFactory([
elementDef(0, NodeFlags.None, null, null, 1, 'div'),
aServiceProvider(1),
])),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a.length).toBe(0);
const childView = createEmbeddedView(view, view.def.nodes[3]);
attachEmbeddedView(view, asElementData(view, 3), 0, childView);
Services.checkAndUpdateView(view);
expect(qs.a.length).toBe(1);
detachEmbeddedView(asElementData(view, 3), 0);
Services.checkAndUpdateView(view);
expect(qs.a.length).toBe(0);
});
it('should update view queries if embedded views are added or removed', () => {
const {view} = createAndGetRootNodes(compViewDef([
...compViewQueryProviders(
0, 0,
[
anchorDef(NodeFlags.EmbeddedViews, null, null, 0, null, compViewDefFactory([
elementDef(0, NodeFlags.None, null, null, 1, 'div'),
aServiceProvider(1),
])),
]),
]));
Services.checkAndUpdateView(view);
const comp: QueryService = asProviderData(view, 1).instance;
expect(comp.a.length).toBe(0);
const compView = asElementData(view, 0).componentView;
const childView = createEmbeddedView(compView, compView.def.nodes[1]);
attachEmbeddedView(view, asElementData(compView, 1), 0, childView);
Services.checkAndUpdateView(view);
expect(comp.a.length).toBe(1);
detachEmbeddedView(asElementData(compView, 1), 0);
Services.checkAndUpdateView(view);
expect(comp.a.length).toBe(0);
});
});
describe('QueryBindingType', () => {
it('should query all matches', () => {
class QueryService {
// TODO(issue/24571): remove '!'.
a!: QueryList<AService>;
}
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 4, 'div'),
directiveDef(1, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.All}),
aServiceProvider(3),
aServiceProvider(4),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a instanceof QueryList).toBeTruthy();
expect(qs.a.toArray()).toEqual([
asProviderData(view, 3).instance,
asProviderData(view, 4).instance,
]);
});
it('should query the first match', () => {
class QueryService {
// TODO(issue/24571): remove '!'.
a!: AService;
}
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 4, 'div'),
directiveDef(1, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.First}),
aServiceProvider(3),
aServiceProvider(4),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a).toBe(asProviderData(view, 3).instance);
});
});
describe('query builtins', () => {
it('should query ElementRef', () => {
class QueryService {
// TODO(issue/24571): remove '!'.
a!: ElementRef;
}
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, [[someQueryId, QueryValueType.ElementRef]], null, 2, 'div'),
directiveDef(1, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.First}),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a.nativeElement).toBe(asElementData(view, 0).renderElement);
});
it('should query TemplateRef', () => {
class QueryService {
// TODO(issue/24571): remove '!'.
a!: TemplateRef<any>;
}
const {view} = createAndGetRootNodes(compViewDef([
anchorDef(
NodeFlags.None, [[someQueryId, QueryValueType.TemplateRef]], null, 2, null,
compViewDefFactory([anchorDef(NodeFlags.None, null, null, 0)])),
directiveDef(1, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.First}),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a.createEmbeddedView).toBeTruthy();
});
it('should query ViewContainerRef', () => {
class QueryService {
// TODO(issue/24571): remove '!'.
a!: ViewContainerRef;
}
const {view} = createAndGetRootNodes(compViewDef([
anchorDef(
NodeFlags.EmbeddedViews, [[someQueryId, QueryValueType.ViewContainerRef]], null, 2),
directiveDef(1, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.First}),
]));
Services.checkAndUpdateView(view);
const qs: QueryService = asProviderData(view, 1).instance;
expect(qs.a.createEmbeddedView).toBeTruthy();
});
});
describe('general binding behavior', () => {
it('should report debug info on binding errors', () => {
class QueryService {
set a(value: any) {
throw new Error('Test');
}
}
const {view} = createAndGetRootNodes(compViewDef([
elementDef(0, NodeFlags.None, null, null, 3, 'div'),
directiveDef(1, NodeFlags.None, null, 1, QueryService, []),
queryDef(
NodeFlags.TypeContentQuery | NodeFlags.DynamicQuery, someQueryId,
{'a': QueryBindingType.All}),
aServiceProvider(3),
]));
let err: any;
try {
Services.checkAndUpdateView(view);
} catch (e) {
err = e;
}
expect(err).toBeTruthy();
expect(err.message).toBe('Test');
const debugCtx = getDebugContext(err);
expect(debugCtx.view).toBe(view);
expect(debugCtx.nodeIndex).toBe(2);
});
});
});
}