124 lines
4.1 KiB
TypeScript
124 lines
4.1 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import * as ng from '@angular/compiler';
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import * as ts from 'typescript';
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import {getClassDeclFromDecoratorProp, getDirectiveClassLike} from '../src/ts_utils';
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import {getPathToNodeAtPosition} from '../src/utils';
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import {MockTypescriptHost} from './test_utils';
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describe('getDirectiveClassLike', () => {
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it('should return a directive class', () => {
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const sourceFile = ts.createSourceFile(
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'foo.ts', `
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@NgModule({
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declarations: [],
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})
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class AppModule {}
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`,
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ts.ScriptTarget.ES2015);
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const result = sourceFile.forEachChild(c => {
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const directive = getDirectiveClassLike(c);
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if (directive) {
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return directive;
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}
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});
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expect(result).toBeTruthy();
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const {decoratorId, classId} = result!;
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expect(decoratorId.kind).toBe(ts.SyntaxKind.Identifier);
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expect(decoratorId.text).toBe('NgModule');
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expect(classId.text).toBe('AppModule');
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});
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});
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describe('getPathToNodeAtPosition', () => {
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const html = '<div c></div>';
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const nodes: ng.Node[] = [];
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beforeAll(() => {
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const parser = new ng.HtmlParser();
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const {rootNodes, errors} = parser.parse(html, 'url');
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expect(errors.length).toBe(0);
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nodes.push(...rootNodes);
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});
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it('should capture element', () => {
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// Try to get a path to an element
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// <|div c></div>
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// ^ cursor is here
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const position = html.indexOf('div');
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const path = getPathToNodeAtPosition(nodes, position);
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// There should be just 1 node in the path, the Element node
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expect(path.empty).toBe(false);
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expect(path.head instanceof ng.Element).toBe(true);
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expect(path.head).toBe(path.tail);
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});
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it('should capture attribute', () => {
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// Try to get a path to an attribute
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// <div |c></div>
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// ^ cusor is here, before the attribute
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const position = html.indexOf('c');
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const path = getPathToNodeAtPosition(nodes, position);
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expect(path.empty).toBe(false);
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expect(path.head instanceof ng.Element).toBe(true);
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expect(path.tail instanceof ng.Attribute).toBe(true);
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});
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it('should capture attribute before cursor', () => {
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// Try to get a path to an attribute
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// <div c|></div>
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// ^ cursor is here, after the attribute
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const position = html.indexOf('c') + 1;
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const path = getPathToNodeAtPosition(nodes, position);
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expect(path.empty).toBe(false);
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expect(path.head instanceof ng.Element).toBe(true);
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expect(path.tail instanceof ng.Attribute).toBe(true);
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});
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});
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describe('getClassDeclFromTemplateNode', () => {
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it('should find class declaration in syntax-only mode', () => {
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const sourceFile = ts.createSourceFile(
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'foo.ts', `
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@Component({
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template: '<div></div>'
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})
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class MyComponent {}`,
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ts.ScriptTarget.ES2015, true /* setParentNodes */);
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function visit(node: ts.Node): ts.ClassDeclaration|undefined {
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if (ts.isPropertyAssignment(node)) {
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return getClassDeclFromDecoratorProp(node);
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}
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return node.forEachChild(visit);
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}
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const classDecl = sourceFile.forEachChild(visit);
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expect(classDecl).toBeTruthy();
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expect(classDecl!.kind).toBe(ts.SyntaxKind.ClassDeclaration);
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expect((classDecl as ts.ClassDeclaration).name!.text).toBe('MyComponent');
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});
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it('should return class declaration for AppComponent', () => {
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const host = new MockTypescriptHost(['/app/app.component.ts']);
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const tsLS = ts.createLanguageService(host);
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const sourceFile = tsLS.getProgram()!.getSourceFile('/app/app.component.ts');
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expect(sourceFile).toBeTruthy();
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const classDecl = sourceFile!.forEachChild(function visit(node): ts.Node|undefined {
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if (ts.isPropertyAssignment(node)) {
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return getClassDeclFromDecoratorProp(node);
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}
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return node.forEachChild(visit);
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});
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expect(classDecl).toBeTruthy();
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expect(ts.isClassDeclaration(classDecl!)).toBe(true);
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expect((classDecl as ts.ClassDeclaration).name!.text).toBe('AppComponent');
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});
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});
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