add a few json serialization tests

Author: adamint

build.gradle

@@ -36,7 +36,7 @@ dependencies {
 
     compile "com.squareup.moshi:moshi:1.8.0"
     compile "com.squareup.moshi:moshi-kotlin:1.8.0"
-    compile group: 'org.json', name: 'json', version: '20190722'
+    compile "org.json:json:20190722"
 
     compile "com.google.http-client:google-http-client:1.31.0"
 
@@ -53,7 +53,7 @@ dependencies {
     }
 
     testCompile "org.junit.jupiter:junit-jupiter-api:$junit_version"
-    testCompile "org.json:json:20180130"
+    testCompile "com.google.code.gson:gson:2.8.5"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junit_version"
 }
 

src/test/kotlin/com/adamratzman/spotify/utilities/JsonTests.kt

@@ -0,0 +1,32 @@
+/* Spotify Web API - Kotlin Wrapper; MIT License, 2019; Original author: Adam Ratzman */
+package com.adamratzman.spotify.utilities
+
+import com.adamratzman.spotify.api
+import com.google.gson.Gson
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.assertDoesNotThrow
+import org.spekframework.spek2.Spek
+import org.spekframework.spek2.style.specification.describe
+
+private val gson = Gson()
+
+class JsonTests : Spek({
+    describe("json serialization tests") {
+        it("artist serialization") {
+            assertDoesNotThrow {
+                assertTrue(gson.toJson(api.artists.getArtist("spotify:artist:5WUlDfRSoLAfcVSX1WnrxN").complete()).isNotEmpty())
+            }
+        }
+        it("track serialization") {
+            assertDoesNotThrow {
+                assertTrue(gson.toJson(api.tracks.getTrack("spotify:track:6kcHg7XL6SKyPNd78daRBL").complete()).isNotEmpty())
+            }
+        }
+        it("album serialization") {
+            assertDoesNotThrow {
+                println(gson.toJson(api.albums.getAlbum("spotify:album:6ggQNps98xaXMY0OZWevEH").complete()))
+                assertTrue(gson.toJson(api.albums.getAlbum("spotify:album:6ggQNps98xaXMY0OZWevEH").complete()).isNotEmpty())
+            }
+        }
+    }
+})