angular-cn/packages/compiler/test/output/ts_emitter_node_only_spec.ts

57 lines
2.1 KiB
TypeScript

/**
* @license
* Copyright Google LLC 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 {ParseLocation, ParseSourceFile} from '@angular/compiler';
import {StaticSymbol} from '@angular/compiler/src/aot/static_symbol';
import * as o from '@angular/compiler/src/output/output_ast';
import {SourceMap} from '@angular/compiler/src/output/source_map';
import {TypeScriptEmitter} from '@angular/compiler/src/output/ts_emitter';
import {ParseSourceSpan} from '@angular/compiler/src/parse_util';
import {extractSourceMap, originalPositionFor} from '@angular/compiler/testing/src/output/source_map_util';
const someGenFilePath = 'somePackage/someGenFile';
{
// Not supported features of our OutputAst in TS:
// - real `const` like in Dart
// - final fields
describe('TypeScriptEmitter', () => {
let emitter: TypeScriptEmitter;
let someVar: o.ReadVarExpr;
beforeEach(() => {
emitter = new TypeScriptEmitter();
someVar = o.variable('someVar');
});
function emitSourceMap(stmt: o.Statement|o.Statement[], preamble?: string): SourceMap {
const stmts = Array.isArray(stmt) ? stmt : [stmt];
const source = emitter.emitStatements(someGenFilePath, stmts, preamble);
return extractSourceMap(source)!;
}
describe('source maps', () => {
it('should emit an inline source map', () => {
const source = new ParseSourceFile(';;;var', 'in.js');
const startLocation = new ParseLocation(source, 0, 0, 3);
const endLocation = new ParseLocation(source, 7, 0, 6);
const sourceSpan = new ParseSourceSpan(startLocation, endLocation);
const someVar = o.variable('someVar', null, sourceSpan);
const sm = emitSourceMap(someVar.toStmt(), '/* MyPreamble \n */');
expect(sm.sources).toEqual([someGenFilePath, 'in.js']);
expect(sm.sourcesContent).toEqual([' ', ';;;var']);
expect(originalPositionFor(sm, {line: 3, column: 0}))
.toEqual({line: 1, column: 3, source: 'in.js'});
});
});
});
}