expression-language/lib/__tests__/ExpressionLanguage.lint.test.js

Javascript implementation of symfony/expression-language

"use strict";

var _Parser = require("../Parser");
var _ExpressionLanguage = _interopRequireDefault(require("../ExpressionLanguage"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
 * Tests for ExpressionLanguage.lint and using flags through the high-level API
 */
describe('ExpressionLanguage.lint and flags', () => {
  test('lint passes for valid expression', () => {
    const el = new _ExpressionLanguage.default();
    el.lint('foo["some_key"].callFunction(a ? b)', ['foo', 'a', 'b']);
  });
  test('lint throws by default for unknown variable and function', () => {
    const el = new _ExpressionLanguage.default();
    expect(() => el.lint('myFn(foo)')).toThrow();
  });
  test('lint allows unknown variables when flag is set', () => {
    const el = new _ExpressionLanguage.default();
    el.lint('foo.bar', [], _Parser.IGNORE_UNKNOWN_VARIABLES);
  });
  test('lint allows unknown functions when flag is set', () => {
    const el = new _ExpressionLanguage.default();
    el.lint('foo()', [], _Parser.IGNORE_UNKNOWN_FUNCTIONS);
  });
  test('lint allows both unknown function and variable when both flags set', () => {
    const el = new _ExpressionLanguage.default();
    el.lint('foo(bar)', [], _Parser.IGNORE_UNKNOWN_FUNCTIONS | _Parser.IGNORE_UNKNOWN_VARIABLES);
  });
  test('lint supports deprecated null names by converting to IGNORE_UNKNOWN_VARIABLES', () => {
    const el = new _ExpressionLanguage.default();
    // Should not throw because names === null maps to IGNORE_UNKNOWN_VARIABLES internally
    el.lint('foo.bar', null, 0);
  });
  test('lint is a no-op for an already-parsed ParsedExpression', () => {
    const el = new _ExpressionLanguage.default();
    const parsed = el.parse('myFn(foo)', [], _Parser.IGNORE_UNKNOWN_FUNCTIONS | _Parser.IGNORE_UNKNOWN_VARIABLES);

    // Passing the already-parsed expression must short-circuit and not re-lint/re-throw.
    expect(el.lint(parsed)).toBeUndefined();
  });
});