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* Install test dependencies. * Add initial test files. These files were created using a simplistic AST manipulator using `recast` to preserve formatting. There's bound to be a huge chunk of errors, but this serves as a good start. QUnit was replaced with Mocha, with ES2015 imports running via `esm`. As far as possible, QUnit-specific syntax has been replaced with Mocha's `describe` and `it`, while the native Node.js `assert` module is used for assertions. Files in the `test` directory ending in `.test.js` will be treated as test files. * Add initial passing files to test run.
71 lines
1.9 KiB
JavaScript
71 lines
1.9 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import {
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errors,
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stubTrue,
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CustomError,
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falsey,
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stubFalse,
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args,
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slice,
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symbol,
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realm,
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} from './utils.js';
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import isError from '../isError.js';
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describe('isError', function() {
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it('should return `true` for error objects', function() {
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var expected = lodashStable.map(errors, stubTrue);
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var actual = lodashStable.map(errors, function(error) {
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return isError(error) === true;
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should return `true` for subclassed values', function() {
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assert.strictEqual(isError(new CustomError('x')), true);
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});
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it('should return `false` for non error objects', function() {
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var expected = lodashStable.map(falsey, stubFalse);
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var actual = lodashStable.map(falsey, function(value, index) {
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return index ? isError(value) : isError();
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});
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assert.deepStrictEqual(actual, expected);
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assert.strictEqual(isError(args), false);
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assert.strictEqual(isError([1, 2, 3]), false);
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assert.strictEqual(isError(true), false);
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assert.strictEqual(isError(new Date), false);
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assert.strictEqual(isError(_), false);
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assert.strictEqual(isError(slice), false);
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assert.strictEqual(isError({ 'a': 1 }), false);
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assert.strictEqual(isError(1), false);
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assert.strictEqual(isError(/x/), false);
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assert.strictEqual(isError('a'), false);
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assert.strictEqual(isError(symbol), false);
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});
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it('should return `false` for plain objects', function() {
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assert.strictEqual(isError({ 'name': 'Error', 'message': '' }), false);
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});
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it('should work with an error object from another realm', function() {
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if (realm.errors) {
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var expected = lodashStable.map(realm.errors, stubTrue);
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var actual = lodashStable.map(realm.errors, function(error) {
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return isError(error) === true;
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});
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assert.deepStrictEqual(actual, expected);
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}
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});
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});
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