stop Gson exposure by making MastodonClient.getSerializer internal

bigbone-rx/src/test/kotlin/social/bigbone/rx/testtool/MockClient.kt

@@ -37,7 +37,10 @@ object MockClient {
             }
             .build()
         every { client.get(ofType<String>(), any()) } returns response
-        every { client.getSerializer() } returns Gson()
+
+        // mocking function that is internal in MastodonClient
+        every { client["getSerializer"]() } returns Gson()
+
         return client
     }
 }

bigbone/src/main/kotlin/social/bigbone/MastodonClient.kt

@@ -30,7 +30,8 @@ private constructor(
         PATCH
     }
 
-    open fun getSerializer() = gson
+    @PublishedApi
+    internal fun getSerializer() = gson
 
     open fun getInstanceName() = instanceName
 

sample-java/src/main/java/social/bigbone/sample/Authenticator.java

@@ -1,5 +1,6 @@
 package social.bigbone.sample;
 
+import com.google.gson.Gson;
 import social.bigbone.MastodonClient;
 import social.bigbone.MastodonRequest;
 import social.bigbone.Parameter;
@@ -95,7 +96,7 @@ private static MastodonRequest<AccessToken> postUserNameAndPassword(
                 .append("grant_type", "password");
         return new MastodonRequest<>(
                 () -> client.post("oauth/token", parameters),
-                s -> client.getSerializer().fromJson(s, AccessToken.class)
+                s -> new Gson().fromJson(s, AccessToken.class)
         );
     }
 }

sample-kotlin/src/main/kotlin/social/bigbone/sample/Authenticator.kt

@@ -1,5 +1,6 @@
 package social.bigbone.sample
 
+import com.google.gson.Gson
 import social.bigbone.MastodonClient
 import social.bigbone.MastodonRequest
 import social.bigbone.Parameter
@@ -109,7 +110,7 @@ object Authenticator {
                 client.post("oauth/token", parameters)
             },
             {
-                client.getSerializer().fromJson(it, AccessToken::class.java)
+                Gson().fromJson(it, AccessToken::class.java)
             }
         )
     }