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-/*
- * This file is forked from the handlebars project (https://github.com/handlebars-lang/handlebars.js),
- * and may include modifications made by Elasticsearch B.V.
- * Elasticsearch B.V. licenses this file to you under the MIT License.
- * See `packages/kbn-handlebars/LICENSE` for more information.
- */
-
-import Handlebars, { type HelperOptions } from '../..';
-import { expectTemplate } from '../__jest__/test_bench';
-
-describe('blocks', () => {
- it('array', () => {
- const string = '{{#goodbyes}}{{text}}! {{/goodbyes}}cruel {{world}}!';
-
- expectTemplate(string)
- .withInput({
- goodbyes: [{ text: 'goodbye' }, { text: 'Goodbye' }, { text: 'GOODBYE' }],
- world: 'world',
- })
- .toCompileTo('goodbye! Goodbye! GOODBYE! cruel world!');
-
- expectTemplate(string)
- .withInput({
- goodbyes: [],
- world: 'world',
- })
- .toCompileTo('cruel world!');
- });
-
- it('array without data', () => {
- expectTemplate('{{#goodbyes}}{{text}}{{/goodbyes}} {{#goodbyes}}{{text}}{{/goodbyes}}')
- .withInput({
- goodbyes: [{ text: 'goodbye' }, { text: 'Goodbye' }, { text: 'GOODBYE' }],
- world: 'world',
- })
- .toCompileTo('goodbyeGoodbyeGOODBYE goodbyeGoodbyeGOODBYE');
- });
-
- it('array with @index', () => {
- expectTemplate('{{#goodbyes}}{{@index}}. {{text}}! {{/goodbyes}}cruel {{world}}!')
- .withInput({
- goodbyes: [{ text: 'goodbye' }, { text: 'Goodbye' }, { text: 'GOODBYE' }],
- world: 'world',
- })
- .toCompileTo('0. goodbye! 1. Goodbye! 2. GOODBYE! cruel world!');
- });
-
- it('empty block', () => {
- const string = '{{#goodbyes}}{{/goodbyes}}cruel {{world}}!';
-
- expectTemplate(string)
- .withInput({
- goodbyes: [{ text: 'goodbye' }, { text: 'Goodbye' }, { text: 'GOODBYE' }],
- world: 'world',
- })
- .toCompileTo('cruel world!');
-
- expectTemplate(string)
- .withInput({
- goodbyes: [],
- world: 'world',
- })
- .toCompileTo('cruel world!');
- });
-
- it('block with complex lookup', () => {
- expectTemplate('{{#goodbyes}}{{text}} cruel {{../name}}! {{/goodbyes}}')
- .withInput({
- name: 'Alan',
- goodbyes: [{ text: 'goodbye' }, { text: 'Goodbye' }, { text: 'GOODBYE' }],
- })
- .toCompileTo('goodbye cruel Alan! Goodbye cruel Alan! GOODBYE cruel Alan! ');
- });
-
- it('multiple blocks with complex lookup', () => {
- expectTemplate('{{#goodbyes}}{{../name}}{{../name}}{{/goodbyes}}')
- .withInput({
- name: 'Alan',
- goodbyes: [{ text: 'goodbye' }, { text: 'Goodbye' }, { text: 'GOODBYE' }],
- })
- .toCompileTo('AlanAlanAlanAlanAlanAlan');
- });
-
- it('block with complex lookup using nested context', () => {
- expectTemplate('{{#goodbyes}}{{text}} cruel {{foo/../name}}! {{/goodbyes}}').toThrow(Error);
- });
-
- it('block with deep nested complex lookup', () => {
- expectTemplate(
- '{{#outer}}Goodbye {{#inner}}cruel {{../sibling}} {{../../omg}}{{/inner}}{{/outer}}'
- )
- .withInput({
- omg: 'OMG!',
- outer: [{ sibling: 'sad', inner: [{ text: 'goodbye' }] }],
- })
- .toCompileTo('Goodbye cruel sad OMG!');
- });
-
- it('works with cached blocks', () => {
- expectTemplate('{{#each person}}{{#with .}}{{first}} {{last}}{{/with}}{{/each}}')
- .withCompileOptions({ data: false })
- .withInput({
- person: [
- { first: 'Alan', last: 'Johnson' },
- { first: 'Alan', last: 'Johnson' },
- ],
- })
- .toCompileTo('Alan JohnsonAlan Johnson');
- });
-
- describe('inverted sections', () => {
- it('inverted sections with unset value', () => {
- expectTemplate(
- '{{#goodbyes}}{{this}}{{/goodbyes}}{{^goodbyes}}Right On!{{/goodbyes}}'
- ).toCompileTo('Right On!');
- });
-
- it('inverted section with false value', () => {
- expectTemplate('{{#goodbyes}}{{this}}{{/goodbyes}}{{^goodbyes}}Right On!{{/goodbyes}}')
- .withInput({ goodbyes: false })
- .toCompileTo('Right On!');
- });
-
- it('inverted section with empty set', () => {
- expectTemplate('{{#goodbyes}}{{this}}{{/goodbyes}}{{^goodbyes}}Right On!{{/goodbyes}}')
- .withInput({ goodbyes: [] })
- .toCompileTo('Right On!');
- });
-
- it('block inverted sections', () => {
- expectTemplate('{{#people}}{{name}}{{^}}{{none}}{{/people}}')
- .withInput({ none: 'No people' })
- .toCompileTo('No people');
- });
-
- it('chained inverted sections', () => {
- expectTemplate('{{#people}}{{name}}{{else if none}}{{none}}{{/people}}')
- .withInput({ none: 'No people' })
- .toCompileTo('No people');
-
- expectTemplate(
- '{{#people}}{{name}}{{else if nothere}}fail{{else unless nothere}}{{none}}{{/people}}'
- )
- .withInput({ none: 'No people' })
- .toCompileTo('No people');
-
- expectTemplate('{{#people}}{{name}}{{else if none}}{{none}}{{else}}fail{{/people}}')
- .withInput({ none: 'No people' })
- .toCompileTo('No people');
- });
-
- it('chained inverted sections with mismatch', () => {
- expectTemplate('{{#people}}{{name}}{{else if none}}{{none}}{{/if}}').toThrow(Error);
- });
-
- it('block inverted sections with empty arrays', () => {
- expectTemplate('{{#people}}{{name}}{{^}}{{none}}{{/people}}')
- .withInput({
- none: 'No people',
- people: [],
- })
- .toCompileTo('No people');
- });
- });
-
- describe('standalone sections', () => {
- it('block standalone else sections', () => {
- expectTemplate('{{#people}}\n{{name}}\n{{^}}\n{{none}}\n{{/people}}\n')
- .withInput({ none: 'No people' })
- .toCompileTo('No people\n');
-
- expectTemplate('{{#none}}\n{{.}}\n{{^}}\n{{none}}\n{{/none}}\n')
- .withInput({ none: 'No people' })
- .toCompileTo('No people\n');
-
- expectTemplate('{{#people}}\n{{name}}\n{{^}}\n{{none}}\n{{/people}}\n')
- .withInput({ none: 'No people' })
- .toCompileTo('No people\n');
- });
-
- it('block standalone chained else sections', () => {
- expectTemplate('{{#people}}\n{{name}}\n{{else if none}}\n{{none}}\n{{/people}}\n')
- .withInput({ none: 'No people' })
- .toCompileTo('No people\n');
-
- expectTemplate('{{#people}}\n{{name}}\n{{else if none}}\n{{none}}\n{{^}}\n{{/people}}\n')
- .withInput({ none: 'No people' })
- .toCompileTo('No people\n');
- });
-
- it('should handle nesting', () => {
- expectTemplate('{{#data}}\n{{#if true}}\n{{.}}\n{{/if}}\n{{/data}}\nOK.')
- .withInput({
- data: [1, 3, 5],
- })
- .toCompileTo('1\n3\n5\nOK.');
- });
- });
-
- describe('decorators', () => {
- it('should apply mustache decorators', () => {
- expectTemplate('{{#helper}}{{*decorator}}{{/helper}}')
- .withHelper('helper', function (options: HelperOptions) {
- return (options.fn as any).run;
- })
- .withDecorator('decorator', function (fn) {
- (fn as any).run = 'success';
- return fn;
- })
- .toCompileTo('success');
- });
-
- it('should apply allow undefined return', () => {
- expectTemplate('{{#helper}}{{*decorator}}suc{{/helper}}')
- .withHelper('helper', function (options: HelperOptions) {
- return options.fn() + (options.fn as any).run;
- })
- .withDecorator('decorator', function (fn) {
- (fn as any).run = 'cess';
- })
- .toCompileTo('success');
- });
-
- it('should apply block decorators', () => {
- expectTemplate('{{#helper}}{{#*decorator}}success{{/decorator}}{{/helper}}')
- .withHelper('helper', function (options: HelperOptions) {
- return (options.fn as any).run;
- })
- .withDecorator('decorator', function (fn, props, container, options) {
- (fn as any).run = options.fn();
- return fn;
- })
- .toCompileTo('success');
- });
-
- it('should support nested decorators', () => {
- expectTemplate(
- '{{#helper}}{{#*decorator}}{{#*nested}}suc{{/nested}}cess{{/decorator}}{{/helper}}'
- )
- .withHelper('helper', function (options: HelperOptions) {
- return (options.fn as any).run;
- })
- .withDecorators({
- decorator(fn, props, container, options) {
- (fn as any).run = options.fn.nested + options.fn();
- return fn;
- },
- nested(fn, props, container, options) {
- props.nested = options.fn();
- },
- })
- .toCompileTo('success');
- });
-
- it('should apply multiple decorators', () => {
- expectTemplate(
- '{{#helper}}{{#*decorator}}suc{{/decorator}}{{#*decorator}}cess{{/decorator}}{{/helper}}'
- )
- .withHelper('helper', function (options: HelperOptions) {
- return (options.fn as any).run;
- })
- .withDecorator('decorator', function (fn, props, container, options) {
- (fn as any).run = ((fn as any).run || '') + options.fn();
- return fn;
- })
- .toCompileTo('success');
- });
-
- it('should access parent variables', () => {
- expectTemplate('{{#helper}}{{*decorator foo}}{{/helper}}')
- .withHelper('helper', function (options: HelperOptions) {
- return (options.fn as any).run;
- })
- .withDecorator('decorator', function (fn, props, container, options) {
- (fn as any).run = options.args;
- return fn;
- })
- .withInput({ foo: 'success' })
- .toCompileTo('success');
- });
-
- it('should work with root program', () => {
- let run;
- expectTemplate('{{*decorator "success"}}')
- .withDecorator('decorator', function (fn, props, container, options) {
- expect(options.args[0]).toEqual('success');
- run = true;
- return fn;
- })
- .withInput({ foo: 'success' })
- .toCompileTo('');
- expect(run).toEqual(true);
- });
-
- it('should fail when accessing variables from root', () => {
- let run;
- expectTemplate('{{*decorator foo}}')
- .withDecorator('decorator', function (fn, props, container, options) {
- expect(options.args[0]).toBeUndefined();
- run = true;
- return fn;
- })
- .withInput({ foo: 'fail' })
- .toCompileTo('');
- expect(run).toEqual(true);
- });
-
- describe('registration', () => {
- beforeEach(() => {
- global.kbnHandlebarsEnv = Handlebars.create();
- });
-
- afterEach(() => {
- global.kbnHandlebarsEnv = null;
- });
-
- it('unregisters', () => {
- // @ts-expect-error: Cannot assign to 'decorators' because it is a read-only property.
- kbnHandlebarsEnv!.decorators = {};
-
- kbnHandlebarsEnv!.registerDecorator('foo', function () {
- return 'fail';
- });
-
- expect(!!kbnHandlebarsEnv!.decorators.foo).toEqual(true);
- kbnHandlebarsEnv!.unregisterDecorator('foo');
- expect(kbnHandlebarsEnv!.decorators.foo).toBeUndefined();
- });
-
- it('allows multiple globals', () => {
- // @ts-expect-error: Cannot assign to 'decorators' because it is a read-only property.
- kbnHandlebarsEnv!.decorators = {};
-
- // @ts-expect-error: Expected 2 arguments, but got 1.
- kbnHandlebarsEnv!.registerDecorator({
- foo() {},
- bar() {},
- });
-
- expect(!!kbnHandlebarsEnv!.decorators.foo).toEqual(true);
- expect(!!kbnHandlebarsEnv!.decorators.bar).toEqual(true);
- kbnHandlebarsEnv!.unregisterDecorator('foo');
- kbnHandlebarsEnv!.unregisterDecorator('bar');
- expect(kbnHandlebarsEnv!.decorators.foo).toBeUndefined();
- expect(kbnHandlebarsEnv!.decorators.bar).toBeUndefined();
- });
-
- it('fails with multiple and args', () => {
- expect(() => {
- kbnHandlebarsEnv!.registerDecorator(
- // @ts-expect-error: Argument of type '{ world(): string; testHelper(): string; }' is not assignable to parameter of type 'string'.
- {
- world() {
- return 'world!';
- },
- testHelper() {
- return 'found it!';
- },
- },
- {}
- );
- }).toThrow('Arg not supported with multiple decorators');
- });
- });
- });
-});