Remove duplicate code from type adapters

Extracted a common superclass, StringTypeAdapter, out of the gson type
adapter classes.

Issue-ID: POLICY-2914
Change-Id: I4bbd2a6e8372e7f42c4952ba9ff03eed97473fb2
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 1 insertions, 11 deletions

diff --git a/gson/src/test/java/org/onap/policy/common/gson/ZonedDateTimeTypeAdapterTest.java b/gson/src/test/java/org/onap/policy/common/gson/ZonedDateTimeTypeAdapterTest.java
index 766a979d..032533eb 100644
--- a/gson/src/test/java/org/onap/policy/common/gson/ZonedDateTimeTypeAdapterTest.java
+++ b/gson/src/test/java/org/onap/policy/common/gson/ZonedDateTimeTypeAdapterTest.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * ONAP
  * ================================================================================
- * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2020-2021 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,16 +53,6 @@ public class ZonedDateTimeTypeAdapterTest {
         String json2 = json.replace("2020", "invalid-date");
         assertThatThrownBy(() -> gson.fromJson(json2, InterestingFields.class)).isInstanceOf(JsonParseException.class)
                         .hasMessageContaining("invalid date");
-
-        // null output
-        data.date = null;
-        json = gson.toJson(data);
-        data2 = gson.fromJson(json, InterestingFields.class);
-        assertEquals(data.toString(), data2.toString());
-
-        // null input
-        data2 = gson.fromJson("{\"date\":null}", InterestingFields.class);
-        assertEquals(data.toString(), data2.toString());
     }