47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
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'use strict';
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var test = require('tape');
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var vm = require('vm');
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var isError = require('../index.js');
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test('isError is a function', function t(assert) {
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assert.equal(typeof isError, 'function');
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assert.end();
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});
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test('returns true for error', function t(assert) {
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assert.equal(isError(new Error('foo')), true);
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assert.equal(isError(Error('foo')), true);
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assert.end();
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});
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test('returns false for non-error', function t(assert) {
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assert.equal(isError(null), false);
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assert.equal(isError(undefined), false);
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assert.equal(isError({message: 'hi'}), false);
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assert.equal(isError(true), false);
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assert.equal(isError(false), false);
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assert.equal(isError(1), false);
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assert.equal(isError('string'), false);
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assert.end();
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});
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test('errors that inherit from Error', function t(assert) {
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var error = Object.create(new Error());
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assert.equal(isError(error), true);
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assert.end();
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});
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test('errors from other contexts', function t(assert) {
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var error = vm.runInNewContext('new Error()');
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assert.equal(isError(error), true);
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assert.end();
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});
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test('errors that inherit from Error in another context', function t(assert) {
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var error = vm.runInNewContext('Object.create(new Error())');
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assert.equal(isError(error), true);
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assert.end();
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});
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