angular-cn/packages/compiler-cli/ngcc/test/utils_spec.ts

218 lines
8.7 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 * as ts from 'typescript';
import {absoluteFrom as _abs} from '../../src/ngtsc/file_system';
import {runInEachFileSystem} from '../../src/ngtsc/file_system/testing';
import {KnownDeclaration} from '../../src/ngtsc/reflection';
import {FactoryMap, getTsHelperFnFromDeclaration, getTsHelperFnFromIdentifier, isRelativePath, stripExtension} from '../src/utils';
describe('FactoryMap', () => {
it('should return an existing value', () => {
const factoryFnSpy = jasmine.createSpy('factory');
const factoryMap = new FactoryMap<string, string>(factoryFnSpy, [['k1', 'v1'], ['k2', 'v2']]);
expect(factoryMap.get('k1')).toBe('v1');
expect(factoryMap.get('k2')).toBe('v2');
expect(factoryFnSpy).not.toHaveBeenCalled();
});
it('should not treat falsy values as missing', () => {
const factoryFnSpy = jasmine.createSpy('factory').and.returnValue('never gonna happen');
const factoryMap = new FactoryMap<string, any>(factoryFnSpy, [
['k1', ''],
['k2', 0],
['k3', false],
['k4', null],
['k5', undefined],
]);
expect(factoryMap.get('k1')).toBe('');
expect(factoryMap.get('k2')).toBe(0);
expect(factoryMap.get('k3')).toBe(false);
expect(factoryMap.get('k4')).toBe(null);
expect(factoryMap.get('k5')).toBe(undefined);
expect(factoryFnSpy).not.toHaveBeenCalled();
});
it('should create, store and return the value if it does not exist', () => {
const factoryFnSpy = jasmine.createSpy('factory').and.returnValues('v3', 'never gonna happen');
const factoryMap = new FactoryMap(factoryFnSpy, [['k1', 'v1'], ['k2', 'v2']]);
expect(factoryMap.get('k3')).toBe('v3');
expect(factoryFnSpy).toHaveBeenCalledTimes(1);
factoryFnSpy.calls.reset();
expect(factoryMap.get('k3')).toBe('v3');
expect(factoryFnSpy).not.toHaveBeenCalled();
});
});
describe('getTsHelperFnFromDeclaration()', () => {
const createFunctionDeclaration = (fnName?: string) => ts.createFunctionDeclaration(
undefined, undefined, undefined, fnName, undefined, [], undefined, undefined);
const createVariableDeclaration = (varName: string) =>
ts.createVariableDeclaration(varName, undefined, undefined);
it('should recognize the `__assign` helper as function declaration', () => {
const decl1 = createFunctionDeclaration('__assign');
const decl2 = createFunctionDeclaration('__assign$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(KnownDeclaration.TsHelperAssign);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(KnownDeclaration.TsHelperAssign);
});
it('should recognize the `__assign` helper as variable declaration', () => {
const decl1 = createVariableDeclaration('__assign');
const decl2 = createVariableDeclaration('__assign$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(KnownDeclaration.TsHelperAssign);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(KnownDeclaration.TsHelperAssign);
});
it('should recognize the `__spread` helper as function declaration', () => {
const decl1 = createFunctionDeclaration('__spread');
const decl2 = createFunctionDeclaration('__spread$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(KnownDeclaration.TsHelperSpread);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(KnownDeclaration.TsHelperSpread);
});
it('should recognize the `__spread` helper as variable declaration', () => {
const decl1 = createVariableDeclaration('__spread');
const decl2 = createVariableDeclaration('__spread$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(KnownDeclaration.TsHelperSpread);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(KnownDeclaration.TsHelperSpread);
});
it('should recognize the `__spreadArrays` helper as function declaration', () => {
const decl1 = createFunctionDeclaration('__spreadArrays');
const decl2 = createFunctionDeclaration('__spreadArrays$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(KnownDeclaration.TsHelperSpreadArrays);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(KnownDeclaration.TsHelperSpreadArrays);
});
it('should recognize the `__spreadArrays` helper as variable declaration', () => {
const decl1 = createVariableDeclaration('__spreadArrays');
const decl2 = createVariableDeclaration('__spreadArrays$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(KnownDeclaration.TsHelperSpreadArrays);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(KnownDeclaration.TsHelperSpreadArrays);
});
it('should return null for unrecognized helpers', () => {
const decl1 = createFunctionDeclaration('__foo');
const decl2 = createVariableDeclaration('spread');
const decl3 = createFunctionDeclaration('spread$42');
expect(getTsHelperFnFromDeclaration(decl1)).toBe(null);
expect(getTsHelperFnFromDeclaration(decl2)).toBe(null);
expect(getTsHelperFnFromDeclaration(decl3)).toBe(null);
});
it('should return null for unnamed declarations', () => {
const unnamledDecl = createFunctionDeclaration(undefined);
expect(getTsHelperFnFromDeclaration(unnamledDecl)).toBe(null);
});
it('should return null for non-function/variable declarations', () => {
const classDecl =
ts.createClassDeclaration(undefined, undefined, '__assign', undefined, undefined, []);
expect(classDecl.name!.text).toBe('__assign');
expect(getTsHelperFnFromDeclaration(classDecl)).toBe(null);
});
});
describe('getTsHelperFnFromIdentifier()', () => {
it('should recognize the `__assign` helper', () => {
const id1 = ts.createIdentifier('__assign');
const id2 = ts.createIdentifier('__assign$42');
expect(getTsHelperFnFromIdentifier(id1)).toBe(KnownDeclaration.TsHelperAssign);
expect(getTsHelperFnFromIdentifier(id2)).toBe(KnownDeclaration.TsHelperAssign);
});
it('should recognize the `__spread` helper', () => {
const id1 = ts.createIdentifier('__spread');
const id2 = ts.createIdentifier('__spread$42');
expect(getTsHelperFnFromIdentifier(id1)).toBe(KnownDeclaration.TsHelperSpread);
expect(getTsHelperFnFromIdentifier(id2)).toBe(KnownDeclaration.TsHelperSpread);
});
it('should recognize the `__spreadArrays` helper', () => {
const id1 = ts.createIdentifier('__spreadArrays');
const id2 = ts.createIdentifier('__spreadArrays$42');
expect(getTsHelperFnFromIdentifier(id1)).toBe(KnownDeclaration.TsHelperSpreadArrays);
expect(getTsHelperFnFromIdentifier(id2)).toBe(KnownDeclaration.TsHelperSpreadArrays);
});
it('should return null for unrecognized helpers', () => {
const id1 = ts.createIdentifier('__foo');
const id2 = ts.createIdentifier('spread');
const id3 = ts.createIdentifier('spread$42');
expect(getTsHelperFnFromIdentifier(id1)).toBe(null);
expect(getTsHelperFnFromIdentifier(id2)).toBe(null);
expect(getTsHelperFnFromIdentifier(id3)).toBe(null);
});
});
runInEachFileSystem(() => {
describe('isRelativePath()', () => {
it('should return true for relative paths', () => {
expect(isRelativePath('.')).toBe(true);
expect(isRelativePath('..')).toBe(true);
expect(isRelativePath('./')).toBe(true);
expect(isRelativePath('.\\')).toBe(true);
expect(isRelativePath('../')).toBe(true);
expect(isRelativePath('..\\')).toBe(true);
expect(isRelativePath('./abc/xyz')).toBe(true);
expect(isRelativePath('.\\abc\\xyz')).toBe(true);
expect(isRelativePath('../abc/xyz')).toBe(true);
expect(isRelativePath('..\\abc\\xyz')).toBe(true);
});
it('should return true for absolute paths', () => {
expect(isRelativePath(_abs('/'))).toBe(true);
expect(isRelativePath(_abs('/abc/xyz'))).toBe(true);
});
it('should return false for other paths', () => {
expect(isRelativePath('abc')).toBe(false);
expect(isRelativePath('abc/xyz')).toBe(false);
expect(isRelativePath('.abc')).toBe(false);
expect(isRelativePath('..abc')).toBe(false);
expect(isRelativePath('@abc')).toBe(false);
expect(isRelativePath('.abc/xyz')).toBe(false);
expect(isRelativePath('..abc/xyz')).toBe(false);
expect(isRelativePath('@abc/xyz')).toBe(false);
});
});
});
describe('stripExtension()', () => {
it('should strip the extension from a file name', () => {
expect(stripExtension('foo.ts')).toBe('foo');
expect(stripExtension('/foo/bar.ts')).toBe('/foo/bar');
expect(stripExtension('/foo/bar.d.ts')).toBe('/foo/bar');
});
it('should do nothing if there is no extension in a file name', () => {
expect(stripExtension('foo')).toBe('foo');
expect(stripExtension('/foo/bar')).toBe('/foo/bar');
expect(stripExtension('/fo-o/b_ar')).toBe('/fo-o/b_ar');
});
});