mongodb/jstests/repl/repl14.js

// Test replication of an array by $push-ing to a missing field in the presence of a sparse index on
// the field.  SERVER-4907

function testWithCollectionIndexIds( capped, sparse, useIds ) {
    printjson( { capped:capped, sparse:sparse, useIds:useIds } );
    
    rt = new ReplTest( "repl14tests" );
    
    m = rt.start( true ); // master
    if ( capped ) {
        m.getDB( 'd' ).createCollection( 'c', { capped:true, size:5*1024 } );
    }
    mc = m.getDB( 'd' )[ 'c' ]; // master collection
    
    mc.ensureIndex( {a:1}, {sparse:sparse} );
    toInsert = {};
    if ( capped ) {
        // Add some padding, so there will be space to push an array.
        toInsert = {padding:new Array( 500 ).toString()};
    }
    if ( useIds ) { // Insert wiith an auto generated _id.
        mc.insert( toInsert );
    }
    else { // Otherwise avoid the auto generated _id.
        mc._mongo.insert( mc._fullName, toInsert, 0 );
    }
    
    s = rt.start( false ); // slave
    sc = s.getDB( 'd' )[ 'c' ]; // slave collection

    // Wait for the document to be cloned.
    assert.soon( function() { return sc.count() > 0; } );
    
    modifiers = {$push:{a:1}};
    if ( capped ) {
        // If padding was added, clear it.
        modifiers['$unset'] = {padding:1};
    }
    mc.update( {}, modifiers );
    
    // Wait for the update to be replicated.
    assert.soon( function() { return sc.count( {a:1} ) > 0; } );
    
    rt.stop();
}

function testWithCollectionIndex( capped, sparse ) {
    testWithCollectionIndexIds( capped, sparse, true );
    if ( capped ) {
        testWithCollectionIndexIds( capped, sparse, false );        
    }
}

function testWithCollection( capped ) {
    testWithCollectionIndex( capped, true );
    testWithCollectionIndex( capped, false );
}

function test() {
    testWithCollection( true );
    testWithCollection( false );
}

test();