101 lines
3.1 KiB
JavaScript
101 lines
3.1 KiB
JavaScript
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/*
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* tst.inherit.js: test that inheriting from VError and WError work as expected.
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*/
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var mod_assert = require('assert');
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var mod_util = require('util');
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var mod_verror = require('../lib/verror');
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var VError = mod_verror.VError;
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var WError = mod_verror.WError;
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var err, suberr;
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function VErrorChild()
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{
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VError.apply(this, Array.prototype.slice.call(arguments));
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}
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mod_util.inherits(VErrorChild, VError);
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VErrorChild.prototype.name = 'VErrorChild';
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function WErrorChild()
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{
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WError.apply(this, Array.prototype.slice.call(arguments));
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}
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mod_util.inherits(WErrorChild, WError);
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WErrorChild.prototype.name = 'WErrorChild';
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suberr = new Error('root cause');
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err = new VErrorChild(suberr, 'top');
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mod_assert.ok(err instanceof Error);
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mod_assert.ok(err instanceof VError);
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mod_assert.ok(err instanceof VErrorChild);
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mod_assert.equal(err.cause(), suberr);
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mod_assert.equal(err.message, 'top: root cause');
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mod_assert.equal(err.toString(), 'VErrorChild: top: root cause');
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mod_assert.equal(err.stack.split('\n')[0], 'VErrorChild: top: root cause');
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suberr = new Error('root cause');
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err = new WErrorChild(suberr, 'top');
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mod_assert.ok(err instanceof Error);
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mod_assert.ok(err instanceof WError);
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mod_assert.ok(err instanceof WErrorChild);
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mod_assert.equal(err.cause(), suberr);
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mod_assert.equal(err.message, 'top');
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mod_assert.equal(err.toString(),
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'WErrorChild: top; caused by Error: root cause');
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mod_assert.equal(err.stack.split('\n')[0],
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'WErrorChild: top; caused by Error: root cause');
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// Test that `<Ctor>.toString()` uses the ctor name. I.e. setting
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// `<Ctor>.prototype.name` isn't necessary.
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function VErrorChildNoName() {
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VError.apply(this, Array.prototype.slice.call(arguments));
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}
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mod_util.inherits(VErrorChildNoName, VError);
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err = new VErrorChildNoName('top');
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mod_assert.equal(err.toString(), 'VErrorChildNoName: top');
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function WErrorChildNoName() {
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WError.apply(this, Array.prototype.slice.call(arguments));
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}
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mod_util.inherits(WErrorChildNoName, WError);
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err = new WErrorChildNoName('top');
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mod_assert.equal(err.toString(), 'WErrorChildNoName: top');
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// Test that `<Ctor>.prototype.name` can be used for the `.toString()`
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// when the ctor is anonymous.
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var VErrorChildAnon = function () {
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VError.apply(this, Array.prototype.slice.call(arguments));
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};
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mod_util.inherits(VErrorChildAnon, VError);
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VErrorChildAnon.prototype.name = 'VErrorChildAnon';
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err = new VErrorChildAnon('top');
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mod_assert.equal(err.toString(), 'VErrorChildAnon: top');
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var WErrorChildAnon = function () {
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WError.apply(this, Array.prototype.slice.call(arguments));
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};
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mod_util.inherits(WErrorChildAnon, WError);
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WErrorChildAnon.prototype.name = 'WErrorChildAnon';
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err = new WErrorChildAnon('top');
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mod_assert.equal(err.toString(), 'WErrorChildAnon: top');
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// Test get appropriate exception name in `.toString()` when reconstituting
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// an error instance a la:
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// https://github.com/mcavage/node-fast/blob/master/lib/client.js#L215
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err = new VError('top');
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err.name = 'CustomNameError';
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mod_assert.equal(err.toString(), 'CustomNameError: top');
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err = new WError('top');
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err.name = 'CustomNameError';
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mod_assert.equal(err.toString(), 'CustomNameError: top');
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