#137 - Improve warning logged when @singleton generated with no default module

Author: rbygrave

inject-generator/src/main/java/io/avaje/inject/generator/ScopeInfo.java

@@ -163,7 +163,10 @@ void writeModule() {
     if (emptyModule) {
       // typically nothing in the default scope, only custom scopes
       if (meta.size() > 0) {
-        context.logWarn("Empty module but meta is not empty? " + meta);
+        String msg = meta + " is being ignored by avaje-inject as there is no 'default' module. This is expected when " +
+          meta + " is a @Singleton being generated by an annotation processor but there is no 'default' module " +
+          "(only custom modules are being used).";
+        context.logWarn(msg);
       }
       return;
     }