116 lines
3.3 KiB
JavaScript
116 lines
3.3 KiB
JavaScript
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/**
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* Tests the Warning prototype
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*
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* Copyright (C) 2014 Free Software Foundation, Inc.
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*
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* This file is part of GNU ease.js.
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*
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* ease.js is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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require( 'common' ).testCase(
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{
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caseSetUp: function()
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{
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this.Sut = this.require( 'warn' ).Warning;
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},
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/**
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* Warning should be a subtype of Error in an effort to ensure
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* consistency and proper handling where Error is expected
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*/
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'Warning has Error prototype': function()
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{
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this.assertOk( new this.Sut( Error() ) instanceof Error );
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},
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/**
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* Make clear that we're working with a warning
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*/
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'Warning should alter Error name': function()
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{
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this.assertEqual( this.Sut( Error() ).name, 'Warning' );
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},
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/**
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* Just as with the other Error classes, as well as all ease.js classes,
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* the 'new' operator should be optional when instantiating the class
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*/
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'`new\' operator is not necessary to instantiate Warning': function()
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{
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this.assertOk( this.Sut( Error( '' ) ) instanceof this.Sut );
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},
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/**
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* Warning message should be taken from the exception passed to it
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*/
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'Warning message is set from wrapped exception': function()
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{
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var err = Error( 'oshit' );
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// bug in FF (tested with 8.0) where, without accessing the message
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// property in this test before passing it to Warning, err.message
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// === "" within the Warning ctor. (Assignment is to silence Closure
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// compiler warning.)
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var _ = err.message;
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var warning = this.Sut( err );
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this.assertEqual( warning.message, err.message );
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// this little trick prevents the compiler from optimizing away the
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// assignment, which would break the test in certain versions of FF.
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return _;
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},
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/**
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* The whole point of Warning is to wrap an exception; so, ensure that
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* one is wrapped.
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*/
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'Throws exception if no exception is wrapped': function()
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{
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var Sut = this.Sut;
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this.assertThrows( function()
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{
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Sut( /* nothing provided to wrap */ );
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}, TypeError );
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this.assertThrows( function()
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{
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Sut( 'not an exception' );
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}, TypeError );
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},
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/**
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* We must provide access to the wrapped exception so that it can be
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* properly handled; warning is only intended to provide additional
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* information so that ease.js may handle it differently than other
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* Error instances.
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*/
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'Can retrieve wrapped exception': function()
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{
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var err = Error( 'foo' ),
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warning = this.Sut( err );
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this.assertStrictEqual( err, warning.getError() );
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},
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} );
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