763 lines
27 KiB
TypeScript
763 lines
27 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. 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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import {ASTWithSource, BindingPipe, Interpolation, ParserError, TemplateBinding, VariableBinding} from '@angular/compiler/src/expression_parser/ast';
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import {Lexer} from '@angular/compiler/src/expression_parser/lexer';
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import {Parser, SplitInterpolation} from '@angular/compiler/src/expression_parser/parser';
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import {expect} from '@angular/platform-browser/testing/src/matchers';
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import {unparse} from './utils/unparser';
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import {validate} from './utils/validator';
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describe('parser', () => {
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describe('parseAction', () => {
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it('should parse numbers', () => { checkAction('1'); });
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it('should parse strings', () => {
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checkAction('\'1\'', '"1"');
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checkAction('"1"');
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});
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it('should parse null', () => { checkAction('null'); });
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it('should parse undefined', () => { checkAction('undefined'); });
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it('should parse unary - expressions', () => {
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checkAction('-1', '0 - 1');
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checkAction('+1', '1 - 0');
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checkAction(`-'1'`, `0 - "1"`);
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checkAction(`+'1'`, `"1" - 0`);
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});
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it('should parse unary ! expressions', () => {
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checkAction('!true');
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checkAction('!!true');
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checkAction('!!!true');
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});
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it('should parse postfix ! expression', () => {
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checkAction('true!');
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checkAction('a!.b');
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checkAction('a!!!!.b');
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});
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it('should parse multiplicative expressions',
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() => { checkAction('3*4/2%5', '3 * 4 / 2 % 5'); });
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it('should parse additive expressions', () => { checkAction('3 + 6 - 2'); });
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it('should parse relational expressions', () => {
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checkAction('2 < 3');
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checkAction('2 > 3');
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checkAction('2 <= 2');
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checkAction('2 >= 2');
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});
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it('should parse equality expressions', () => {
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checkAction('2 == 3');
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checkAction('2 != 3');
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});
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it('should parse strict equality expressions', () => {
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checkAction('2 === 3');
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checkAction('2 !== 3');
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});
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it('should parse expressions', () => {
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checkAction('true && true');
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checkAction('true || false');
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});
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it('should parse grouped expressions', () => { checkAction('(1 + 2) * 3', '1 + 2 * 3'); });
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it('should ignore comments in expressions', () => { checkAction('a //comment', 'a'); });
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it('should retain // in string literals',
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() => { checkAction(`"http://www.google.com"`, `"http://www.google.com"`); });
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it('should parse an empty string', () => { checkAction(''); });
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describe('literals', () => {
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it('should parse array', () => {
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checkAction('[1][0]');
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checkAction('[[1]][0][0]');
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checkAction('[]');
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checkAction('[].length');
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checkAction('[1, 2].length');
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});
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it('should parse map', () => {
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checkAction('{}');
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checkAction('{a: 1, "b": 2}[2]');
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checkAction('{}["a"]');
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});
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it('should only allow identifier, string, or keyword as map key', () => {
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expectActionError('{(:0}', 'expected identifier, keyword, or string');
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expectActionError('{1234:0}', 'expected identifier, keyword, or string');
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});
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});
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describe('member access', () => {
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it('should parse field access', () => {
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checkAction('a');
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checkAction('this.a', 'a');
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checkAction('a.a');
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});
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it('should only allow identifier or keyword as member names', () => {
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expectActionError('x.(', 'identifier or keyword');
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expectActionError('x. 1234', 'identifier or keyword');
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expectActionError('x."foo"', 'identifier or keyword');
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});
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it('should parse safe field access', () => {
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checkAction('a?.a');
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checkAction('a.a?.a');
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});
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});
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describe('method calls', () => {
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it('should parse method calls', () => {
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checkAction('fn()');
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checkAction('add(1, 2)');
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checkAction('a.add(1, 2)');
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checkAction('fn().add(1, 2)');
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});
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});
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describe('functional calls', () => {
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it('should parse function calls', () => { checkAction('fn()(1, 2)'); });
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});
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describe('conditional', () => {
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it('should parse ternary/conditional expressions', () => {
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checkAction('7 == 3 + 4 ? 10 : 20');
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checkAction('false ? 10 : 20');
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});
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it('should report incorrect ternary operator syntax', () => {
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expectActionError('true?1', 'Conditional expression true?1 requires all 3 expressions');
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});
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});
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describe('assignment', () => {
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it('should support field assignments', () => {
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checkAction('a = 12');
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checkAction('a.a.a = 123');
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checkAction('a = 123; b = 234;');
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});
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it('should report on safe field assignments',
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() => { expectActionError('a?.a = 123', 'cannot be used in the assignment'); });
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it('should support array updates', () => { checkAction('a[0] = 200'); });
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});
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it('should error when using pipes',
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() => { expectActionError('x|blah', 'Cannot have a pipe'); });
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it('should store the source in the result',
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() => { expect(parseAction('someExpr', 'someExpr')); });
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it('should store the passed-in location',
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() => { expect(parseAction('someExpr', 'location').location).toBe('location'); });
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it('should report when encountering interpolation', () => {
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expectActionError('{{a()}}', 'Got interpolation ({{}}) where expression was expected');
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});
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});
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describe('general error handling', () => {
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it('should report an unexpected token',
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() => { expectActionError('[1,2] trac', 'Unexpected token \'trac\''); });
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it('should report reasonable error for unconsumed tokens',
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() => { expectActionError(')', 'Unexpected token ) at column 1 in [)]'); });
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it('should report a missing expected token', () => {
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expectActionError('a(b', 'Missing expected ) at the end of the expression [a(b]');
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});
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});
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describe('parseBinding', () => {
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describe('pipes', () => {
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it('should parse pipes', () => {
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checkBinding('a(b | c)', 'a((b | c))');
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checkBinding('a.b(c.d(e) | f)', 'a.b((c.d(e) | f))');
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checkBinding('[1, 2, 3] | a', '([1, 2, 3] | a)');
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checkBinding('{a: 1, "b": 2} | c', '({a: 1, "b": 2} | c)');
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checkBinding('a[b] | c', '(a[b] | c)');
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checkBinding('a?.b | c', '(a?.b | c)');
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checkBinding('true | a', '(true | a)');
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checkBinding('a | b:c | d', '((a | b:c) | d)');
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checkBinding('a | b:(c | d)', '(a | b:(c | d))');
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});
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it('should only allow identifier or keyword as formatter names', () => {
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expectBindingError('"Foo"|(', 'identifier or keyword');
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expectBindingError('"Foo"|1234', 'identifier or keyword');
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expectBindingError('"Foo"|"uppercase"', 'identifier or keyword');
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});
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it('should parse quoted expressions', () => { checkBinding('a:b', 'a:b'); });
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it('should not crash when prefix part is not tokenizable',
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() => { checkBinding('"a:b"', '"a:b"'); });
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it('should ignore whitespace around quote prefix', () => { checkBinding(' a :b', 'a:b'); });
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it('should refuse prefixes that are not single identifiers', () => {
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expectBindingError('a + b:c', '');
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expectBindingError('1:c', '');
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});
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});
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it('should store the source in the result',
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() => { expect(parseBinding('someExpr').source).toBe('someExpr'); });
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it('should store the passed-in location',
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() => { expect(parseBinding('someExpr', 'location').location).toBe('location'); });
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it('should report chain expressions',
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() => { expectError(parseBinding('1;2'), 'contain chained expression'); });
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it('should report assignment',
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() => { expectError(parseBinding('a=2'), 'contain assignments'); });
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it('should report when encountering interpolation', () => {
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expectBindingError('{{a.b}}', 'Got interpolation ({{}}) where expression was expected');
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});
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it('should parse conditional expression', () => { checkBinding('a < b ? a : b'); });
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it('should ignore comments in bindings', () => { checkBinding('a //comment', 'a'); });
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it('should retain // in string literals',
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() => { checkBinding(`"http://www.google.com"`, `"http://www.google.com"`); });
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it('should retain // in : microsyntax', () => { checkBinding('one:a//b', 'one:a//b'); });
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});
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describe('parseTemplateBindings', () => {
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function humanize(bindings: TemplateBinding[]): Array<[string, string | null, boolean]> {
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return bindings.map(binding => {
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const key = binding.key.source;
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const value = binding.value ? binding.value.source : null;
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const keyIsVar = binding instanceof VariableBinding;
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return [key, value, keyIsVar];
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});
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}
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function humanizeSpans(
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bindings: TemplateBinding[], attr: string): Array<[string, string, string | null]> {
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return bindings.map(binding => {
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const {sourceSpan, key, value} = binding;
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const sourceStr = attr.substring(sourceSpan.start, sourceSpan.end);
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const keyStr = attr.substring(key.span.start, key.span.end);
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let valueStr = null;
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if (value) {
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const {start, end} = value instanceof ASTWithSource ? value.ast.sourceSpan : value.span;
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valueStr = attr.substring(start, end);
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}
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return [sourceStr, keyStr, valueStr];
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});
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}
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it('should parse key and value', () => {
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const cases: Array<[string, string, string | null, boolean, string, string, string | null]> =
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[
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// expression, key, value, VariableBinding, source span, key span, value span
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['*a=""', 'a', null, false, 'a="', 'a', null],
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['*a="b"', 'a', 'b', false, 'a="b', 'a', 'b'],
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['*a-b="c"', 'a-b', 'c', false, 'a-b="c', 'a-b', 'c'],
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['*a="1+1"', 'a', '1+1', false, 'a="1+1', 'a', '1+1'],
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];
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for (const [attr, key, value, keyIsVar, sourceSpan, keySpan, valueSpan] of cases) {
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const bindings = parseTemplateBindings(attr);
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expect(humanize(bindings)).toEqual([
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[key, value, keyIsVar],
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]);
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expect(humanizeSpans(bindings, attr)).toEqual([
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[sourceSpan, keySpan, valueSpan],
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]);
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}
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});
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it('should variable declared via let', () => {
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const bindings = parseTemplateBindings('*a="let b"');
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expect(humanize(bindings)).toEqual([
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// key, value, VariableBinding
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['a', null, false],
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['b', null, true],
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]);
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});
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it('should allow multiple pairs', () => {
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const bindings = parseTemplateBindings('*a="1 b 2"');
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expect(humanize(bindings)).toEqual([
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// key, value, VariableBinding
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['a', '1', false],
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['aB', '2', false],
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]);
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});
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it('should allow space and colon as separators', () => {
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const bindings = parseTemplateBindings('*a="1,b 2"');
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expect(humanize(bindings)).toEqual([
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// key, value, VariableBinding
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['a', '1', false],
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['aB', '2', false],
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]);
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});
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it('should store the templateUrl', () => {
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const bindings = parseTemplateBindings('*a="1,b 2"', '/foo/bar.html');
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expect(humanize(bindings)).toEqual([
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// key, value, VariableBinding
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['a', '1', false],
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['aB', '2', false],
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]);
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expect((bindings[0].value as ASTWithSource).location).toEqual('/foo/bar.html');
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});
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it('should support common usage of ngIf', () => {
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const bindings = parseTemplateBindings('*ngIf="cond | pipe as foo, let x; ngIf as y"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['ngIf', 'cond | pipe', false],
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['foo', 'ngIf', true],
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['x', null, true],
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['y', 'ngIf', true],
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]);
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});
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it('should support common usage of ngFor', () => {
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let bindings: TemplateBinding[];
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bindings = parseTemplateBindings('*ngFor="let person of people"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['ngFor', null, false],
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['person', null, true],
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['ngForOf', 'people', false],
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]);
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bindings = parseTemplateBindings(
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'*ngFor="let item; of items | slice:0:1 as collection, trackBy: func; index as i"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['ngFor', null, false],
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['item', null, true],
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['ngForOf', 'items | slice:0:1', false],
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['collection', 'ngForOf', true],
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['ngForTrackBy', 'func', false],
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['i', 'index', true],
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]);
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bindings = parseTemplateBindings(
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'*ngFor="let item, of: [1,2,3] | pipe as items; let i=index, count as len"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['ngFor', null, false],
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['item', null, true],
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['ngForOf', '[1,2,3] | pipe', false],
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['items', 'ngForOf', true],
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['i', 'index', true],
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['len', 'count', true],
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]);
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});
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it('should parse pipes', () => {
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const bindings = parseTemplateBindings('*key="value|pipe "');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', 'value|pipe', false],
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]);
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const {value} = bindings[0];
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expect(value).toBeAnInstanceOf(ASTWithSource);
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expect((value as ASTWithSource).ast).toBeAnInstanceOf(BindingPipe);
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});
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describe('"let" binding', () => {
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it('should support single declaration', () => {
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const bindings = parseTemplateBindings('*key="let i"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', null, false],
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['i', null, true],
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]);
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});
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it('should support multiple declarations', () => {
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const bindings = parseTemplateBindings('*key="let a; let b"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', null, false],
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['a', null, true],
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['b', null, true],
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]);
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});
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it('should support empty string assignment', () => {
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const bindings = parseTemplateBindings(`*key="let a=''; let b='';"`);
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', null, false],
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['a', '', true],
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['b', '', true],
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]);
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});
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it('should support key and value names with dash', () => {
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const bindings = parseTemplateBindings('*key="let i-a = j-a,"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', null, false],
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['i-a', 'j-a', true],
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]);
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});
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it('should support declarations with or without value assignment', () => {
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const bindings = parseTemplateBindings('*key="let item; let i = k"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', null, false],
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['item', null, true],
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['i', 'k', true],
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]);
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});
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it('should support declaration before an expression', () => {
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const bindings = parseTemplateBindings('*directive="let item in expr; let a = b"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['directive', null, false],
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['item', null, true],
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['directiveIn', 'expr', false],
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['a', 'b', true],
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]);
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});
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});
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describe('"as" binding', () => {
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it('should support single declaration', () => {
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const bindings = parseTemplateBindings('*ngIf="exp as local"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['ngIf', 'exp', false],
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['local', 'ngIf', true],
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]);
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});
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it('should support declaration after an expression', () => {
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const bindings = parseTemplateBindings('*ngFor="let item of items as iter; index as i"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['ngFor', null, false],
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['item', null, true],
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['ngForOf', 'items', false],
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['iter', 'ngForOf', true],
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['i', 'index', true],
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]);
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});
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it('should support key and value names with dash', () => {
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const bindings = parseTemplateBindings('*key="foo, k-b as l-b;"');
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expect(humanize(bindings)).toEqual([
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// [ key, value, VariableBinding ]
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['key', 'foo', false],
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['l-b', 'k-b', true],
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]);
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});
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});
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describe('source, key, value spans', () => {
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it('should map empty expression', () => {
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const attr = '*ngIf=""';
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const bindings = parseTemplateBindings(attr);
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expect(humanizeSpans(bindings, attr)).toEqual([
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// source span, key span, value span
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['ngIf="', 'ngIf', null],
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]);
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});
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it('should map variable declaration via "let"', () => {
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const attr = '*key="let i"';
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const bindings = parseTemplateBindings(attr);
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expect(humanizeSpans(bindings, attr)).toEqual([
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// source span, key span, value span
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['key="', 'key', null], // source span stretches till next binding
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['let i', 'i', null],
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]);
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});
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it('shoud map multiple variable declarations via "let"', () => {
|
|
const attr = '*key="let item; let i=index; let e=even;"';
|
|
const bindings = parseTemplateBindings(attr);
|
|
expect(humanizeSpans(bindings, attr)).toEqual([
|
|
// source span, key span, value span
|
|
['key="', 'key', null],
|
|
['let item; ', 'item', null],
|
|
['let i=index; ', 'i', 'index'],
|
|
['let e=even;', 'e', 'even'],
|
|
]);
|
|
});
|
|
|
|
it('shoud map expression with pipe', () => {
|
|
const attr = '*ngIf="cond | pipe as foo, let x; ngIf as y"';
|
|
const bindings = parseTemplateBindings(attr);
|
|
expect(humanizeSpans(bindings, attr)).toEqual([
|
|
// source span, key span, value span
|
|
['ngIf="cond | pipe ', 'ngIf', 'cond | pipe'],
|
|
['ngIf="cond | pipe as foo, ', 'foo', 'ngIf'],
|
|
['let x; ', 'x', null],
|
|
['ngIf as y', 'y', 'ngIf'],
|
|
]);
|
|
});
|
|
|
|
it('should map variable declaration via "as"', () => {
|
|
const attr =
|
|
'*ngFor="let item; of items | slice:0:1 as collection, trackBy: func; index as i"';
|
|
const bindings = parseTemplateBindings(attr);
|
|
expect(humanizeSpans(bindings, attr)).toEqual([
|
|
// source span, key span, value span
|
|
['ngFor="', 'ngFor', null],
|
|
['let item; ', 'item', null],
|
|
['of items | slice:0:1 ', 'of', 'items | slice:0:1'],
|
|
['of items | slice:0:1 as collection, ', 'collection', 'of'],
|
|
['trackBy: func; ', 'trackBy', 'func'],
|
|
['index as i', 'i', 'index'],
|
|
]);
|
|
});
|
|
|
|
it('should map literal array', () => {
|
|
const attr = '*ngFor="let item, of: [1,2,3] | pipe as items; let i=index, count as len, "';
|
|
const bindings = parseTemplateBindings(attr);
|
|
expect(humanizeSpans(bindings, attr)).toEqual([
|
|
// source span, key span, value span
|
|
['ngFor="', 'ngFor', null],
|
|
['let item, ', 'item', null],
|
|
['of: [1,2,3] | pipe ', 'of', '[1,2,3] | pipe'],
|
|
['of: [1,2,3] | pipe as items; ', 'items', 'of'],
|
|
['let i=index, ', 'i', 'index'],
|
|
['count as len, ', 'len', 'count'],
|
|
]);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('parseInterpolation', () => {
|
|
it('should return null if no interpolation',
|
|
() => { expect(parseInterpolation('nothing')).toBe(null); });
|
|
|
|
it('should parse no prefix/suffix interpolation', () => {
|
|
const ast = parseInterpolation('{{a}}') !.ast as Interpolation;
|
|
expect(ast.strings).toEqual(['', '']);
|
|
expect(ast.expressions.length).toEqual(1);
|
|
expect(ast.expressions[0].name).toEqual('a');
|
|
});
|
|
|
|
it('should parse prefix/suffix with multiple interpolation', () => {
|
|
const originalExp = 'before {{ a }} middle {{ b }} after';
|
|
const ast = parseInterpolation(originalExp) !.ast;
|
|
expect(unparse(ast)).toEqual(originalExp);
|
|
validate(ast);
|
|
});
|
|
|
|
it('should report empty interpolation expressions', () => {
|
|
expectError(
|
|
parseInterpolation('{{}}') !,
|
|
'Blank expressions are not allowed in interpolated strings');
|
|
|
|
expectError(
|
|
parseInterpolation('foo {{ }}') !,
|
|
'Parser Error: Blank expressions are not allowed in interpolated strings');
|
|
});
|
|
|
|
it('should parse conditional expression', () => { checkInterpolation('{{ a < b ? a : b }}'); });
|
|
|
|
it('should parse expression with newline characters', () => {
|
|
checkInterpolation(`{{ 'foo' +\n 'bar' +\r 'baz' }}`, `{{ "foo" + "bar" + "baz" }}`);
|
|
});
|
|
|
|
it('should support custom interpolation', () => {
|
|
const parser = new Parser(new Lexer());
|
|
const ast =
|
|
parser.parseInterpolation('{% a %}', null, 0, {start: '{%', end: '%}'}) !.ast as any;
|
|
expect(ast.strings).toEqual(['', '']);
|
|
expect(ast.expressions.length).toEqual(1);
|
|
expect(ast.expressions[0].name).toEqual('a');
|
|
});
|
|
|
|
describe('comments', () => {
|
|
it('should ignore comments in interpolation expressions',
|
|
() => { checkInterpolation('{{a //comment}}', '{{ a }}'); });
|
|
|
|
it('should retain // in single quote strings', () => {
|
|
checkInterpolation(`{{ 'http://www.google.com' }}`, `{{ "http://www.google.com" }}`);
|
|
});
|
|
|
|
it('should retain // in double quote strings', () => {
|
|
checkInterpolation(`{{ "http://www.google.com" }}`, `{{ "http://www.google.com" }}`);
|
|
});
|
|
|
|
it('should ignore comments after string literals',
|
|
() => { checkInterpolation(`{{ "a//b" //comment }}`, `{{ "a//b" }}`); });
|
|
|
|
it('should retain // in complex strings', () => {
|
|
checkInterpolation(
|
|
`{{"//a\'//b\`//c\`//d\'//e" //comment}}`, `{{ "//a\'//b\`//c\`//d\'//e" }}`);
|
|
});
|
|
|
|
it('should retain // in nested, unterminated strings',
|
|
() => { checkInterpolation(`{{ "a\'b\`" //comment}}`, `{{ "a\'b\`" }}`); });
|
|
});
|
|
|
|
});
|
|
|
|
describe('parseSimpleBinding', () => {
|
|
it('should parse a field access', () => {
|
|
const p = parseSimpleBinding('name');
|
|
expect(unparse(p)).toEqual('name');
|
|
validate(p);
|
|
});
|
|
|
|
it('should report when encountering pipes', () => {
|
|
expectError(
|
|
validate(parseSimpleBinding('a | somePipe')),
|
|
'Host binding expression cannot contain pipes');
|
|
});
|
|
|
|
it('should report when encountering interpolation', () => {
|
|
expectError(
|
|
validate(parseSimpleBinding('{{exp}}')),
|
|
'Got interpolation ({{}}) where expression was expected');
|
|
});
|
|
|
|
it('should report when encountering field write', () => {
|
|
expectError(validate(parseSimpleBinding('a = b')), 'Bindings cannot contain assignments');
|
|
});
|
|
});
|
|
|
|
describe('wrapLiteralPrimitive', () => {
|
|
it('should wrap a literal primitive', () => {
|
|
expect(unparse(validate(createParser().wrapLiteralPrimitive('foo', null, 0))))
|
|
.toEqual('"foo"');
|
|
});
|
|
});
|
|
|
|
describe('error recovery', () => {
|
|
function recover(text: string, expected?: string) {
|
|
const expr = validate(parseAction(text));
|
|
expect(unparse(expr)).toEqual(expected || text);
|
|
}
|
|
it('should be able to recover from an extra paren', () => recover('((a)))', 'a'));
|
|
it('should be able to recover from an extra bracket', () => recover('[[a]]]', '[[a]]'));
|
|
it('should be able to recover from a missing )', () => recover('(a;b', 'a; b;'));
|
|
it('should be able to recover from a missing ]', () => recover('[a,b', '[a, b]'));
|
|
it('should be able to recover from a missing selector', () => recover('a.'));
|
|
it('should be able to recover from a missing selector in a array literal',
|
|
() => recover('[[a.], b, c]'));
|
|
});
|
|
|
|
describe('offsets', () => {
|
|
it('should retain the offsets of an interpolation', () => {
|
|
const interpolations = splitInterpolation('{{a}} {{b}} {{c}}') !;
|
|
expect(interpolations.offsets).toEqual([2, 9, 16]);
|
|
});
|
|
|
|
it('should retain the offsets into the expression AST of interpolations', () => {
|
|
const source = parseInterpolation('{{a}} {{b}} {{c}}') !;
|
|
const interpolation = source.ast as Interpolation;
|
|
expect(interpolation.expressions.map(e => e.span.start)).toEqual([2, 9, 16]);
|
|
});
|
|
});
|
|
});
|
|
|
|
function createParser() {
|
|
return new Parser(new Lexer());
|
|
}
|
|
|
|
function parseAction(text: string, location: any = null, offset: number = 0): ASTWithSource {
|
|
return createParser().parseAction(text, location, offset);
|
|
}
|
|
|
|
function parseBinding(text: string, location: any = null, offset: number = 0): ASTWithSource {
|
|
return createParser().parseBinding(text, location, offset);
|
|
}
|
|
|
|
function parseTemplateBindings(attribute: string, templateUrl = 'foo.html'): TemplateBinding[] {
|
|
const match = attribute.match(/^\*(.+)="(.*)"$/);
|
|
expect(match).toBeTruthy(`failed to extract key and value from ${attribute}`);
|
|
const [_, key, value] = match;
|
|
const absKeyOffset = 1; // skip the * prefix
|
|
const absValueOffset = attribute.indexOf('=') + '="'.length;
|
|
const parser = createParser();
|
|
const result =
|
|
parser.parseTemplateBindings(key, value, templateUrl, absKeyOffset, absValueOffset);
|
|
expect(result.errors).toEqual([]);
|
|
expect(result.warnings).toEqual([]);
|
|
return result.templateBindings;
|
|
}
|
|
|
|
function parseInterpolation(text: string, location: any = null, offset: number = 0): ASTWithSource|
|
|
null {
|
|
return createParser().parseInterpolation(text, location, offset);
|
|
}
|
|
|
|
function splitInterpolation(text: string, location: any = null): SplitInterpolation|null {
|
|
return createParser().splitInterpolation(text, location);
|
|
}
|
|
|
|
function parseSimpleBinding(text: string, location: any = null, offset: number = 0): ASTWithSource {
|
|
return createParser().parseSimpleBinding(text, location, offset);
|
|
}
|
|
|
|
function checkInterpolation(exp: string, expected?: string) {
|
|
const ast = parseInterpolation(exp) !;
|
|
if (expected == null) expected = exp;
|
|
expect(unparse(ast)).toEqual(expected);
|
|
validate(ast);
|
|
}
|
|
|
|
function checkBinding(exp: string, expected?: string) {
|
|
const ast = parseBinding(exp);
|
|
if (expected == null) expected = exp;
|
|
expect(unparse(ast)).toEqual(expected);
|
|
validate(ast);
|
|
}
|
|
|
|
function checkAction(exp: string, expected?: string) {
|
|
const ast = parseAction(exp);
|
|
if (expected == null) expected = exp;
|
|
expect(unparse(ast)).toEqual(expected);
|
|
validate(ast);
|
|
}
|
|
|
|
function expectError(ast: {errors: ParserError[]}, message: string) {
|
|
for (const error of ast.errors) {
|
|
if (error.message.indexOf(message) >= 0) {
|
|
return;
|
|
}
|
|
}
|
|
const errMsgs = ast.errors.map(err => err.message).join('\n');
|
|
throw Error(
|
|
`Expected an error containing "${message}" to be reported, but got the errors:\n` + errMsgs);
|
|
}
|
|
|
|
function expectActionError(text: string, message: string) {
|
|
expectError(validate(parseAction(text)), message);
|
|
}
|
|
|
|
function expectBindingError(text: string, message: string) {
|
|
expectError(validate(parseBinding(text)), message);
|
|
}
|