57 lines
1.6 KiB
TypeScript
57 lines
1.6 KiB
TypeScript
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/**
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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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/**
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* Jasmine matcher to verify that a function contains the provided code fragments.
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*/
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export function functionContaining(expectedFragments: Array<string|RegExp>):
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jasmine.AsymmetricMatcher<Function> {
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let _actual: Function|null = null;
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const matches = (code: string, fragment: string|RegExp): boolean => {
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if (typeof fragment === 'string') {
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return code.includes(fragment);
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} else {
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return fragment.test(code);
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}
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};
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return {
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asymmetricMatch(actual: Function): boolean {
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_actual = actual;
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if (typeof actual !== 'function') {
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return false;
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}
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const code = actual.toString();
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for (const fragment of expectedFragments) {
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if (!matches(code, fragment)) {
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return false;
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}
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}
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return true;
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},
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jasmineToString(): string {
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if (typeof _actual !== 'function') {
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return `Expected function to contain code fragments ${
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jasmine.pp(expectedFragments)} but got ${jasmine.pp(_actual)}`;
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}
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const errors: string[] = [];
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const code = _actual.toString();
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errors.push(
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`The actual function with code:\n${code}\n\ndid not contain the following fragments:`);
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for (const fragment of expectedFragments) {
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if (!matches(code, fragment)) {
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errors.push(`- ${fragment}`);
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}
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}
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return errors.join('\n');
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}
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};
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}
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