Properly acquire JUnit 4, drop json-simple

buildSrc/src/main/kotlin/PlatformConfig.kt

@@ -9,6 +9,7 @@ import org.gradle.api.tasks.javadoc.Javadoc
 import org.gradle.external.javadoc.CoreJavadocOptions
 import org.gradle.kotlin.dsl.apply
 import org.gradle.kotlin.dsl.configure
+import org.gradle.kotlin.dsl.dependencies
 import org.gradle.kotlin.dsl.get
 import org.gradle.kotlin.dsl.getByName
 import org.gradle.kotlin.dsl.named
@@ -38,6 +39,10 @@ fun Project.applyPlatformAndCoreConfiguration() {
         toolVersion = "7.6.1"
     }
 
+    dependencies {
+        "testImplementation"("junit:junit:4.12")
+    }
+
     // Java 8 turns on doclint which we fail
     tasks.withType<Javadoc>().configureEach {
         (options as CoreJavadocOptions).addStringOption("Xdoclint:none", "-quiet")

worldedit-core/build.gradle.kts

@@ -20,7 +20,6 @@ dependencies {
     "compile"("com.google.guava:guava:21.0")
     "compile"("com.google.code.findbugs:jsr305:1.3.9")
     "compile"("com.google.code.gson:gson:2.8.0")
-    "compile"("com.googlecode.json-simple:json-simple:1.1.1")
     "compile"("org.slf4j:slf4j-api:1.7.26")
 
     "compileOnly"(project(":worldedit-libs:core:ap"))

worldedit-core/src/main/java/com/sk89q/worldedit/util/paste/EngineHubPaste.java

@@ -19,8 +19,9 @@
 
 package com.sk89q.worldedit.util.paste;
 
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
 import com.sk89q.worldedit.util.net.HttpRequest;
-import org.json.simple.JSONValue;
 
 import java.io.IOException;
 import java.net.URL;
@@ -33,6 +34,8 @@ public class EngineHubPaste implements Paster {
 
     private static final Pattern URL_PATTERN = Pattern.compile("https?://.+$");
 
+    private static final Gson GSON = new Gson();
+
     @Override
     public Callable<URL> paste(String content) {
         return new PasteTask(content);
@@ -59,10 +62,10 @@ public class EngineHubPaste implements Paster {
                     .returnContent()
                     .asString("UTF-8").trim();
 
-            Object object = JSONValue.parse(result);
-            if (object instanceof Map) {
-                @SuppressWarnings("unchecked")
-                String urlString = String.valueOf(((Map<Object, Object>) object).get("url"));
+            Map<Object, Object> object = GSON.fromJson(result, new TypeToken<Map<Object, Object>>() {
+            }.getType());
+            if (object != null) {
+                String urlString = String.valueOf(object.get("url"));
                 Matcher m = URL_PATTERN.matcher(urlString);
 
                 if (m.matches()) {