angular-docs-cn/modules/@angular/compiler/test/compiler_util/identifier_util_spec.ts

64 lines
1.9 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 {createInlineArray} from '../../src/compiler_util/identifier_util';
import {Identifiers, createIdentifier} from '../../src/identifiers';
import * as o from '../../src/output/output_ast';
export function main() {
describe('createInlineArray', () => {
function check(argCount: number, expectedIdentifier: any) {
const args = createArgs(argCount);
expect(createInlineArray(args))
.toEqual(o.importExpr(createIdentifier(expectedIdentifier)).instantiate([
<o.Expression>o.literal(argCount)
].concat(args)));
}
function createArgs(count: number): o.Expression[] {
const result: o.Expression[] = [];
for (let i = 0; i < count; i++) {
result.push(o.NULL_EXPR);
}
return result;
}
it('should work for arrays of length 0', () => {
expect(createInlineArray([
])).toEqual(o.importExpr(createIdentifier(Identifiers.EMPTY_INLINE_ARRAY)));
});
it('should work for arrays of length 1 - 2', () => {
check(1, Identifiers.inlineArrays[0]);
check(2, Identifiers.inlineArrays[1]);
});
it('should work for arrays of length 3 - 4', () => {
for (let i = 3; i <= 4; i++) {
check(i, Identifiers.inlineArrays[2]);
}
});
it('should work for arrays of length 5 - 8', () => {
for (let i = 5; i <= 8; i++) {
check(i, Identifiers.inlineArrays[3]);
}
});
it('should work for arrays of length 9 - 16', () => {
for (let i = 9; i <= 16; i++) {
check(i, Identifiers.inlineArrays[4]);
}
});
it('should work for arrays of length > 16',
() => { check(17, Identifiers.InlineArrayDynamic); });
});
}