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liza/test/dapi/format/JsonResponseTest.js

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JavaScript

/**
* Test case for JSON formatting of API result
*
* Copyright (C) 2014, 2015 R-T Specialty, LLC.
*
* This file is part of the Liza Data Collection Framework
*
* Liza is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
var dapi = require( '../../../' ).dapi,
expect = require( 'chai' ).expect,
Class = require( 'easejs' ).Class,
DataApi = dapi.DataApi,
Sut = dapi.format.JsonResponse;
describe( 'dapi.format.JsonRepsonse trait', function()
{
describe( '.request', function()
{
it( 'passes data to encapsulated DataApi', function()
{
var stubs = _createStubbedDapi( null, '0' ),
expected = {};
stubs.request( expected, function() {} );
expect( stubs.given ).to.equal( expected );
} );
it( 'converts response to JSON', function( done )
{
var raw = '{"foo": "bar"}';
_createStubbedDapi( null, raw )
.request( '', function( err, data )
{
// should have been converted to JSON
expect( data ).to.deep.equal( { foo: 'bar' } );
expect( err ).to.equal( null );
done();
} );
} );
describe( 'when JSON parsing fails', function()
{
it( 'returns error', function( done )
{
_createStubbedDapi( null, 'ERR' )
.request( '', function( err, data )
{
expect( err ).to.be.instanceOf( SyntaxError );
done();
} );
} );
it( 'provides bad text as object.text', function( done )
{
var text = 'NOT JSON';
_createStubbedDapi( null, text )
.request( '', function( err, data )
{
expect( data ).to.be.a( 'object' );
expect( data.text ).to.equal( text );
done();
} );
} );
} );
describe( 'on request error from supertype', function()
{
it( 'attempts to format output as JSON', function( done )
{
var chk = '{"foo": "bar"}';
_createStubbedDapi( null, chk )
.request( '', function( _, data )
{
expect( data ).to.be.a( 'object' );
expect( data.foo ).to.equal( "bar" );
done();
} );
} );
it( 'proxies error when JSON output valid', function( done )
{
var e = Error( 'foo' );
_createStubbedDapi( e, '{}' )
.request( '', function( err, _ )
{
expect( err ).to.equal( e );
done();
} );
} );
it( 'produces both errors on bad JSON output', function( done )
{
var e = Error( 'foo' );
_createStubbedDapi( e, 'BAD JSON' )
.request( '', function( err, _ )
{
// the main error should indicate both
expect( err ).to.be.instanceOf( Error );
// and we should provide references to both
expect( err.list[ 0 ] ).to.equal( e );
expect( err.list[ 1 ] ).to.be.instanceOf(
SyntaxError
);
done();
} );
} );
} );
} );
} );
function _createStubbedDapi( err, resp )
{
return Class.implement( DataApi ).extend(
{
given: null,
'virtual public request': function( data, callback )
{
this.given = data;
callback( err, resp );
}
} ).use( Sut )();
}