- B JsonUtils.prettyPrint to not override passed-in GsonBuilder, closes #551

Author: LarsEckart

approvaltests-tests/src/test/java/org/approvaltests/DocumentHelpersTest.listAllVerifyFunctions.approved.md

@@ -51,11 +51,11 @@
  * CombinationApprovals. [verifyBestCoveringPairs ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/combinations/CombinationApprovals.java#L291-L299) (Function7, Object[], Object[], Object[], Object[], Object[], Object[], Object[], $\color{#AAA}{\textsf{Options}}$)  
  * CombinationApprovals. [verifyBestCoveringPairs ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/combinations/CombinationApprovals.java#L309-L317) (Function8, Object[], Object[], Object[], Object[], Object[], Object[], Object[], Object[], $\color{#AAA}{\textsf{Options}}$)  
  * CombinationApprovals. [verifyBestCoveringPairs ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/combinations/CombinationApprovals.java#L326-L333) (Function9, Object[], Object[], Object[], Object[], Object[], Object[], Object[], Object[], Object[], $\color{#AAA}{\textsf{Options}}$)  
- * JsonApprovals. [verifyAsJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L53-L56) (Object, $\color{#AAA}{\textsf{Options}}$)  
- * JsonApprovals. [verifyAsJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L48-L51) (Object, Function1, $\color{#AAA}{\textsf{Options}}$)  
+ * JsonApprovals. [verifyAsJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L55-L58) (Object, $\color{#AAA}{\textsf{Options}}$)  
+ * JsonApprovals. [verifyAsJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L50-L53) (Object, Function1, $\color{#AAA}{\textsf{Options}}$)  
  * JsonApprovals. [verifyJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L17-L20) (String, $\color{#AAA}{\textsf{Options}}$)  
- * JsonApprovals. [verifyJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L35-L39) (String, boolean, $\color{#AAA}{\textsf{Options}}$)  
- * JsonApprovals. [verifyJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L29-L34) (String, boolean, Function1, $\color{#AAA}{\textsf{Options}}$)  
+ * JsonApprovals. [verifyJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L37-L41) (String, boolean, $\color{#AAA}{\textsf{Options}}$)  
+ * JsonApprovals. [verifyJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonApprovals.java#L29-L36) (String, boolean, Function1, $\color{#AAA}{\textsf{Options}}$)  
  * JsonJacksonApprovals. [verifyAsJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonJacksonApprovals.java#L14-L17) (Object, $\color{#AAA}{\textsf{Options}}$)  
  * JsonXstreamApprovals. [verifyAsJson ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/JsonXstreamApprovals.java#L18-L21) (Object, $\color{#AAA}{\textsf{Options}}$)  
  * VelocityApprovals. [verify ](https://github.com/approvals/ApprovalTests.Java/blob/master/approvaltests/src/main/java/org/approvaltests/velocity/VelocityApprovals.java#L16-L24) (ContextAware, $\color{#AAA}{\textsf{Options}}$)  

approvaltests-tests/src/test/java/org/approvaltests/JsonApprovalsTest.applesauce.approved.json

@@ -0,0 +1,4 @@
+{
+  "name": "value",
+  "localDate": null
+}

approvaltests-tests/src/test/java/org/approvaltests/JsonApprovalsTest.java

@@ -1,7 +1,8 @@
 package org.approvaltests;
 
-import com.spun.util.Wrapper;
+import com.google.gson.GsonBuilder;
 import org.junit.jupiter.api.Test;
+import org.lambda.functions.Function1;
 
 import java.time.LocalDateTime;
 
@@ -13,6 +14,17 @@ void nullDateTest()
     LocalDateWrapper localDateWrapper = new LocalDateWrapper();
     JsonApprovals.verifyAsJson(localDateWrapper, g -> g.serializeNulls());
   }
+  @Test
+  void applesauce()
+  {
+    String jsonString = """
+        {
+          "name": "value",
+          "localDate": null
+        }
+        """;
+    JsonApprovals.verifyJson(jsonString, false, GsonBuilder::serializeNulls);
+  }
   private class LocalDateWrapper
   {
     public LocalDateTime getLocalDate()

approvaltests-util/src/main/java/com/spun/util/JsonUtils.java

@@ -1,12 +1,17 @@
 package com.spun.util;
 
-import com.google.gson.*;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
 import com.google.gson.stream.JsonReader;
 import com.google.gson.stream.JsonWriter;
 import org.lambda.functions.Function1;
 
 import java.io.IOException;
-import java.lang.reflect.Field;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.util.Map;
@@ -16,6 +21,10 @@
 public class JsonUtils
 {
   public static String prettyPrint(String json)
+  {
+    return prettyPrint(json, g -> g);
+  }
+  public static String prettyPrint(String json, Function1<GsonBuilder, GsonBuilder> gsonBuilder)
   {
     if (!ObjectUtils.isClassPresent("com.google.gson.Gson"))
     {
@@ -24,7 +33,7 @@ public static String prettyPrint(String json)
     }
     try
     {
-      Gson gson = new GsonBuilder().setPrettyPrinting().create();
+      Gson gson = gsonBuilder.call(new GsonBuilder()).setPrettyPrinting().create();
       JsonElement je = JsonParser.parseString(json);
       return gson.toJson(je);
     }

approvaltests/src/main/java/org/approvaltests/JsonApprovals.java

@@ -29,7 +29,9 @@ public static void verifyJson(String json, boolean reorderJson, Function1<GsonBu
   public static void verifyJson(String json, boolean reorderJson, Function1<GsonBuilder, GsonBuilder> gsonBuilder,
       Options options)
   {
-    String formattedJson = reorderJson ? JsonUtils.reorderFields(json, gsonBuilder) : JsonUtils.prettyPrint(json);
+    String formattedJson = reorderJson
+        ? JsonUtils.reorderFields(json, gsonBuilder)
+        : JsonUtils.prettyPrint(json, gsonBuilder);
     Approvals.verify(formattedJson, options.forFile().withExtension(".json"));
   }
   public static void verifyJson(String json, boolean reorderJson, Options options)