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liza/test/dapi/format/JsonResponseTest.js

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/**
* Test case for JSON formatting of API result
*
* Copyright (C) 2014 LoVullo Associates, Inc.
*
* 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;
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describe( 'dapi.format.JsonRepsonse trait', function()
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{
describe( '.request', function()
{
it( 'passes data to encapsulated DataApi', function()
{
var stubs = _createStubbedDapi( null, '0' ),
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expected = {};
stubs.request( expected, function() {} );
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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();
} );
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} );
it( 'returns error if JSON parsing fails', function( done )
{
_createStubbedDapi( null, 'ERR' )
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.request( '', function( err, data )
{
expect( err ).to.be.instanceOf( Error );
expect( data ).to.equal( null );
done();
} );
} );
it( 'proxy error from encapsulated DataApi', function( done )
{
var e = Error( 'foo' );
_createStubbedDapi( e, '0' )
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.request( '', function( err, data )
{
// data should also be cleared out
expect( err ).to.equal( e );
expect( data ).to.equal( null );
done();
} );
} );
} );
} );
function _createStubbedDapi( err, resp )
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{
return Class.implement( DataApi ).extend(
{
given: null,
'virtual public request': function( data, callback )
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{
this.given = data;
callback( err, resp );
}
} ).use( Sut )();
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}