180 lines
6.1 KiB
JavaScript
180 lines
6.1 KiB
JavaScript
/*
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* tst.werror.js: tests basic functionality of the WError class.
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*/
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var mod_assert = require('assert');
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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, stack, substack;
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/*
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* Remove full paths and relative line numbers from stack traces so that we can
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* compare against "known-good" output.
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*/
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function cleanStack(stacktxt)
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{
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var re = new RegExp(__filename + ':\\d+:\\d+', 'gm');
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stacktxt = stacktxt.replace(re, 'tst.werror.js');
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return (stacktxt);
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}
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/*
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* Save the generic parts of all stack traces so we can avoid hardcoding
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* Node-specific implementation details in our testing of stack traces.
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*/
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var nodestack = new Error().stack.split('\n').slice(2).join('\n');
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/* no arguments */
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err = new WError();
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mod_assert.equal(err.name, 'WError');
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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.equal(err.message, '');
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mod_assert.equal(err.toString(), 'WError');
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mod_assert.ok(err.cause() === undefined);
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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/* options-argument form */
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err = new WError({});
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mod_assert.equal(err.message, '');
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mod_assert.equal(err.toString(), 'WError');
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mod_assert.ok(err.cause() === undefined);
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/* simple message */
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err = new WError('my error');
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mod_assert.equal(err.message, 'my error');
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mod_assert.equal(err.toString(), 'WError: my error');
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mod_assert.ok(err.cause() === undefined);
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError: my error',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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err = new WError({}, 'my error');
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mod_assert.equal(err.message, 'my error');
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mod_assert.equal(err.toString(), 'WError: my error');
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mod_assert.ok(err.cause() === undefined);
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/* printf-style message */
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err = new WError('%s error: %3d problems', 'very bad', 15);
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mod_assert.equal(err.message, 'very bad error: 15 problems');
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mod_assert.equal(err.toString(), 'WError: very bad error: 15 problems');
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mod_assert.ok(err.cause() === undefined);
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err = new WError({}, '%s error: %3d problems', 'very bad', 15);
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mod_assert.equal(err.message, 'very bad error: 15 problems');
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mod_assert.equal(err.toString(), 'WError: very bad error: 15 problems');
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mod_assert.ok(err.cause() === undefined);
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/* caused by another error, with no additional message */
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suberr = new Error('root cause');
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err = new WError(suberr);
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mod_assert.equal(err.message, '');
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mod_assert.equal(err.toString(), 'WError; caused by Error: root cause');
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mod_assert.ok(err.cause() === suberr);
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err = new WError({ 'cause': suberr });
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mod_assert.equal(err.message, '');
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mod_assert.equal(err.toString(), 'WError; caused by Error: root cause');
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mod_assert.ok(err.cause() === suberr);
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/* caused by another error, with annotation */
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err = new WError(suberr, 'proximate cause: %d issues', 3);
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mod_assert.equal(err.message, 'proximate cause: 3 issues');
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mod_assert.equal(err.toString(), 'WError: proximate cause: 3 issues; ' +
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'caused by Error: root cause');
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mod_assert.ok(err.cause() === suberr);
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError: proximate cause: 3 issues; caused by Error: root cause',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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err = new WError({ 'cause': suberr }, 'proximate cause: %d issues', 3);
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mod_assert.equal(err.message, 'proximate cause: 3 issues');
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mod_assert.equal(err.toString(), 'WError: proximate cause: 3 issues; ' +
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'caused by Error: root cause');
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mod_assert.ok(err.cause() === suberr);
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError: proximate cause: 3 issues; caused by Error: root cause',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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/* caused by another WError, with annotation. */
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suberr = err;
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err = new WError(suberr, 'top');
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mod_assert.equal(err.message, 'top');
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mod_assert.equal(err.toString(), 'WError: top; caused by WError: ' +
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'proximate cause: 3 issues; caused by Error: root cause');
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mod_assert.ok(err.cause() === suberr);
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err = new WError({ 'cause': suberr }, 'top');
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mod_assert.equal(err.message, 'top');
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mod_assert.equal(err.toString(), 'WError: top; caused by WError: ' +
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'proximate cause: 3 issues; caused by Error: root cause');
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mod_assert.ok(err.cause() === suberr);
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/* caused by a VError */
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suberr = new VError(new Error('root cause'), 'mid');
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err = new WError(suberr, 'top');
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mod_assert.equal(err.message, 'top');
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mod_assert.equal(err.toString(),
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'WError: top; caused by VError: mid: root cause');
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mod_assert.ok(err.cause() === suberr);
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/* null cause (for backwards compatibility with older versions) */
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err = new WError(null, 'my error');
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mod_assert.equal(err.message, 'my error');
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mod_assert.equal(err.toString(), 'WError: my error');
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mod_assert.ok(err.cause() === undefined);
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError: my error',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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err = new WError({ 'cause': null }, 'my error');
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mod_assert.equal(err.message, 'my error');
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mod_assert.equal(err.toString(), 'WError: my error');
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mod_assert.ok(err.cause() === undefined);
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err = new WError(null);
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mod_assert.equal(err.message, '');
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mod_assert.equal(err.toString(), 'WError');
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mod_assert.ok(err.cause() === undefined);
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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/* constructorOpt */
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function makeErr(options) {
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return (new WError(options, 'test error'));
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}
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err = makeErr({});
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mod_assert.equal(err.toString(), 'WError: test error');
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError: test error',
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' at makeErr (tst.werror.js)',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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err = makeErr({ 'constructorOpt': makeErr });
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mod_assert.equal(err.toString(), 'WError: test error');
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stack = cleanStack(err.stack);
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mod_assert.equal(stack, [
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'WError: test error',
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' at Object.<anonymous> (tst.werror.js)'
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].join('\n') + '\n' + nodestack);
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