added fix and test for #179

Author: Markus Ritter

inject-test/src/test/java/org/example/coffee/InjectListTest.java

@@ -3,6 +3,8 @@
 import io.avaje.inject.BeanScope;
 import org.example.coffee.list.CombinedSetSomei;
 import org.example.coffee.list.CombinedSomei;
+import org.example.coffee.list.SomeInterface;
+import org.example.coffee.list.SomeInterfaceConsumer;
 import org.junit.jupiter.api.Test;
 
 import java.util.List;
@@ -28,4 +30,13 @@ void test_set() {
       assertThat(somes).containsOnly("a", "b", "a2");
     }
   }
+
+  @Test
+  void testEmptyList() {
+    try (BeanScope context = BeanScope.newBuilder().build()) {
+      SomeInterfaceConsumer consumer = context.get(SomeInterfaceConsumer.class);
+      assertThat(consumer.getList()).isEmpty();
+      System.out.println("--------------------> works");
+    }
+  }
 }

inject-test/src/test/java/org/example/coffee/list/SomeInterface.java

@@ -0,0 +1,5 @@
+package org.example.coffee.list;
+
+public interface SomeInterface {
+  void doSomething();
+}