199 lines
4.5 KiB
JavaScript
199 lines
4.5 KiB
JavaScript
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var assert = require( 'assert' ),
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assert_wrapped = {},
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acount = 0;
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// wrap each of the assertions so that we can keep track of the number of times
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// that they were invoked
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for ( f in assert )
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{
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var _assert_cur = assert[ f ];
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if ( typeof _assert_cur !== 'function' )
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{
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continue;
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}
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// wrap the assertion to keep count
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assert_wrapped[ f ] = ( function( a )
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{
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return function()
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{
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incAssertCount();
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a.apply( this, arguments );
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};
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} )( _assert_cur );
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}
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function incAssertCount()
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{
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acount++;
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};
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/**
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* Defines and runs a test case
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*
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* This is a very basic system that provides a more familiar jUnit/phpUnit-style
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* output for xUnit tests and allows all tests in the case to be run in the
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* event of a test failure.
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*
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* The test name should be given as the key and the test itself as a function as
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* the value. The test will be invoked within the context of the assertion
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* module.
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*
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* This will be evolving throughout the life of the project. Mainly, it cannot
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* be run as part of a suite without multiple summary outputs.
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*
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* @param {Object.<string,function()>} object containing tests
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*
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* @return {undefined}
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*/
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module.exports = function( test_case )
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{
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var failures = [],
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scount = 0,
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context = prepareCaseContext(),
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setUp = test_case.setUp;
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// reset assertion count for this case
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acount = 0;
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// perform case-wide setup
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test_case.caseSetUp && test_case.caseSetUp.call( context );
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// remove unneeded methods so we don't invoke them as tests below
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delete test_case.caseSetUp;
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delete test_case.setUp;
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// run each test in the case
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for ( test in test_case )
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{
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// xUnit-style setup
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if ( setUp )
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{
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setUp.call( context );
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}
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try
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{
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test_case[ test ].call( context );
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scount++;
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testPrint( '.' );
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}
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catch ( e )
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{
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testPrint( 'F' );
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failures.push( [ test, e ] );
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}
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}
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testPrint( "\n\n" );
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if ( failures.length )
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{
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outputTestFailures( failures );
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}
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// print test case summary
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testPrint(
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( ( failures.length ) ? "FAILED" : "OK" ) + " - " +
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scount + " successful, " + failures.length + " failure(s), " +
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( scount + failures.length ) + " total " +
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'(' + acount + " assertion" + ( ( acount !== 1 ) ? 's' : '' ) + ")\n"
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);
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// exit with non-zero status to indicate failure
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failures.length
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&& typeof process !== 'undefined'
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&& process.exit( 1 );
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};
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/**
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* Prepare assertion methods on context
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*
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* @return {Object} context
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*/
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function prepareCaseContext()
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{
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return {
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require: require( __dirname + '/common' ).require,
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fail: assert_wrapped.fail,
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assertOk: assert_wrapped.ok,
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assertEqual: assert_wrapped.equal,
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assertNotEqual: assert_wrapped.notEqual,
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assertDeepEqual: assert_wrapped.deepEqual,
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assertStrictEqual: assert_wrapped.strictEqual,
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assertNotStrictEqual: assert_wrapped.notStrictEqual,
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assertThrows: assert_wrapped.throws,
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assertDoesNotThrow: assert_wrapped.doesNotThrow,
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assertIfError: assert_wrapped.ifError,
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incAssertCount: incAssertCount,
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};
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}
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/**
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* Outputs test failures and their stack traces
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*
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* @param {Array} failures
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*
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* @return {undefined}
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*/
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function outputTestFailures( failures )
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{
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var i, cur, name, e;
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// if we don't have stdout access, throw an error containing each of the
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// error strings
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if ( typeof process === 'undefined' )
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{
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var err = '',
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i = failures.length;
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for ( i in failures )
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{
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err += failures[ i ][ 0 ] + '; ';
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}
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throw Error( err );
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}
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for ( i = 0; i < failures.length; i++ )
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{
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cur = failures[ i ];
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name = cur[ 0 ];
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e = cur[ 1 ];
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// output the name followed by the stack trace
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testPrint(
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'#' + i + ' ' + name + '\n'
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+ e.stack + "\n\n"
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);
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}
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}
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/**
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* Outputs a string if stdout is available (node.js)
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*
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* @param {string} str string to output
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*
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* @return {undefined}
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*/
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var testPrint = ( ( typeof process === 'undefined' )
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|| ( typeof process.stdout === 'undefined' ) )
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? function() {}
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: function( str )
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{
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process.stdout.write( str );
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};
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