angular-cn/tools/size-tracking/size_tracking_spec.ts

112 lines
3.1 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 {writeFileSync} from 'fs';
import {join} from 'path';
import {SourceMapGenerator} from 'source-map';
import {SizeTracker} from './size_tracker';
const testTempDir = process.env['TEST_TMPDIR'] !;
describe('size tracking', () => {
let generator: SourceMapGenerator;
beforeEach(() => { generator = new SourceMapGenerator(); });
function writeFile(filePath: string, content: string): string {
const tmpFilePath = join(testTempDir, filePath);
writeFileSync(tmpFilePath, content);
return tmpFilePath;
}
it('should keep track of unmapped bytes in the file', () => {
generator.addMapping({
generated: {line: 1, column: 1},
original: {line: 1, column: 1},
source: './origin-a.ts',
});
// A => origin-a (2 bytes), U => unmapped (1 byte)
const mapPath = writeFile('/test.map', generator.toString());
const inputPath = writeFile('/test.js', `UAA`);
const {sizeResult} = new SizeTracker(inputPath, mapPath);
expect(sizeResult.unmapped).toBe(1);
expect(sizeResult.files).toEqual({
size: 3,
'origin-a.ts': 2,
});
});
it('should properly combine mapped characters from same source', () => {
generator.addMapping(
{generated: {line: 1, column: 0}, original: {line: 1, column: 0}, source: './origin-a.ts'});
generator.addMapping(
{generated: {line: 1, column: 1}, original: {line: 1, column: 0}, source: './origin-b.ts'});
generator.addMapping({
generated: {line: 1, column: 2},
original: {line: 10, column: 0},
source: './origin-a.ts'
});
// A => origin-a (1 byte), B => origin-b (two bytes)
const mapPath = writeFile('/test.map', generator.toString());
const inputPath = writeFile('/test.js', `ABB`);
const {sizeResult} = new SizeTracker(inputPath, mapPath);
expect(sizeResult.unmapped).toBe(0);
expect(sizeResult.files).toEqual({
size: 3,
'origin-a.ts': 2,
'origin-b.ts': 1,
});
});
it('should keep track of summed-up byte sizes for directories', () => {
generator.addMapping({
generated: {line: 1, column: 0},
original: {line: 1, column: 0},
source: '@angular/core/render3/a.ts'
});
generator.addMapping({
generated: {line: 1, column: 2},
original: {line: 1, column: 0},
source: '@angular/core/render3/b.ts'
});
generator.addMapping({
generated: {line: 1, column: 3},
original: {line: 1, column: 0},
source: '@angular/core/c.ts'
});
// A => render3/a.ts (2 bytes), B => render3/b.ts (1 byte), C => c.ts (1 byte)
const mapPath = writeFile('/test.map', generator.toString());
const inputPath = writeFile('/test.js', `AABC`);
const {sizeResult} = new SizeTracker(inputPath, mapPath);
expect(sizeResult.unmapped).toBe(0);
expect(sizeResult.files).toEqual({
size: 4,
'render3/': {
size: 3,
'a.ts': 2,
'b.ts': 1,
},
'c.ts': 1,
});
});
});