Add test for #314 (#315)

Author: cowtowncoder

afterburner/src/test/java/com/fasterxml/jackson/module/afterburner/deser/AfterburnerGenericInterface314Test.java

@@ -0,0 +1,38 @@
+package com.fasterxml.jackson.module.afterburner.deser;
+
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.module.afterburner.AfterburnerTestBase;
+//import com.fasterxml.jackson.module.afterburner.util.failure.JacksonTestFailureExpected;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class AfterburnerGenericInterface314Test extends AfterburnerTestBase
+{
+    interface A314<T> {
+        T getBody();
+    }
+
+    static class MD314 implements A314<String> {
+        private String body;
+
+        public MD314(String b) {
+            body = b;
+        }
+
+        @Override
+        public String getBody() {
+            return body;
+        }
+    }
+
+    //@JacksonTestFailureExpected
+    @Test
+    public void testMapperAfterUse() throws Exception
+    {
+        final ObjectMapper mapper = newObjectMapper();
+        String json = mapper.writeValueAsString(new MD314("test"));
+        assertEquals("{\"body\":\"test\"}", json);
+    }
+}