Unit tests for photoshop. Example from Hidden Object Game naming rules (1 folder per object with 4 specifics layers).

PSDValidatorHOG.jsx

#target photoshop

var document = app.activeDocument;
var itemsTypes = "obscured,hotspot,whole,shadow";
var output = "";

for ( var i = 0; i < document.layerSets.length; i++) {
    validateLayerSet(document.layerSets[i]);
};

if (output === "") {
    alert( "No error ;)" );
}else {
    output += "\n\n Tips: You can filter layer name with `[Error]` value ;)";
    alert( output, "Some errors detected", true );
}

function validateLayerSet ( layerSet ) {
    // Take only layerSet without children
    for ( var i = 0; i < layerSet.layerSets.length; i++ ) validateLayerSet( layerSet.layerSets[i] );
    if ( layerSet.typename != "LayerSet" || layerSet.layerSets.length > 0 ) return;
    
    // Ensure layer name is without `[Error]` prefix
    if ( layerSet.name.indexOf( "[Error]" ) !== -1 ) layerSet.name = layerSet.name.slice( 8 );
    
    // Parse layer name
    var decomposedName = layerSet.name.split( ":" );
    var type = decomposedName[0];
    var name = decomposedName[1];
    
    // check if layerSet is on format `type:name` or `type:name:specialType`
    if ( decomposedName.length < 2 || decomposedName.length > 3 ) markLayer( layerSet, "format must be `type:name` or `type:name:specialType`" );
    
    // check if name is in PascalCase
    if ( name.indexOf( " " ) !== -1 ) markLayer(layerSet, "item name must be in PascalCase" );
    if ( name.indexOf( "-" ) !== -1 ) markLayer(layerSet, "item name must be in PascalCase" );
    if ( name.indexOf( "_" ) !== -1 ) markLayer(layerSet, "item name must be in PascalCase" );
    if ( name[0] !== name[0].toUpperCase() ) markLayer(layerSet, "item name must be in PascalCase" );
    
    // check layers names
    var itemLayers = {obscured:0, hotspot: 0, whole: 0, shadow: 0};
    for ( var i = 0; i < layerSet.layers.length; i++) validateLayerName( type, layerSet.layers[i], itemLayers );
    
    // check item layers type
    if ( type === "item" ) {
        if ( itemLayers.whole === 0 ) markLayer( layerSet, "missing whole layer" );
        if ( itemLayers.whole > 1 )       markLayer( layerSet, "to many whole layers" );
        if ( itemLayers.obscured > 1 )  markLayer( layerSet, "to many obscured layers" );
        if ( itemLayers.hotspot > 1 )    markLayer( layerSet, "to many hotspot layers" );
        if ( itemLayers.shadow > 1 )    markLayer( layerSet, "to many shadow layers" );        
    }
}

function validateLayerName ( type, layer, itemLayers ) {
      if ( type === "item" ) {
          if (itemsTypes.indexOf(layer.name) === -1) markLayer( layer, "item layer must have`obscured`, `hotspot`, `whole` or `shadow` name" );
          itemLayers[layer.name] += 1;
      }
}

function markLayer ( layer, debugMessage ) {
    $.writeln(layer.name + " -> " + debugMessage );
   output += layer.name + " -> " + debugMessage + "\n";
   layer.name = "[Error] " + layer.name;
}