Refactor girder caps and add unit tests

Author: cakeGit

build.gradle

@@ -100,6 +100,10 @@ dependencies {
     compileOnly("dev.engine-room.flywheel:flywheel-neoforge-api-${minecraft_version}:${flywheel_version}")
     runtimeOnly("dev.engine-room.flywheel:flywheel-neoforge-${minecraft_version}:${flywheel_version}")
     implementation("com.tterrag.registrate:Registrate:${registrate_version}")
+
+    testImplementation(platform("org.junit:junit-bom:5.10.2"))
+    testImplementation("org.junit.jupiter:junit-jupiter-api")
+    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
 }
 
 // This block of code expands all declared replace properties in the specified resource targets.
@@ -145,6 +149,10 @@ tasks.withType(JavaCompile).configureEach {
     options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
 }
 
+tasks.withType(Test).configureEach {
+    useJUnitPlatform()
+}
+
 // IDEA no longer automatically downloads sources/javadoc jars for dependencies, so we need to explicitly enable the behavior.
 idea {
     module {