Improving LLM unit tests, adding Rate Limiter, and checking for + and - friendship.

CHANGELOG.md

@@ -6,6 +6,13 @@ All notable changes to **CreatureChat** are documented in this file. The format
 
 ## Unreleased
 
+### Added
+- Rate limiter for LLM unit tests (to prevent rate limit issues from certain providers when running all tests)
+- Check friendship direction (+ or -) in LLM unit tests (to verify friendship is output correctly)
+
+### Changed
+- Improved LLM unit tests to check for both a positive and negative behaviors (i.e. FOLLOW and not LEAD, ATTACK and not FLEE, etc...)
+
 ### Fixed
 - Changing death message timestamp output to use DEBUG log level
 

src/test/java/com/owlmaddie/utils/RateLimiter.java

+package com.owlmaddie.utils;
+
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * The {@code RateLimiter} class is used to slow down LLM unit tests so we don't hit any rate limits accidentally.
+ */
+public class RateLimiter {
+    private final Semaphore semaphore;
+
+    public RateLimiter(int requestsPerSecond) {
+        semaphore = new Semaphore(requestsPerSecond);
+        Executors.newScheduledThreadPool(1).scheduleAtFixedRate(() -> {
+            semaphore.release(requestsPerSecond - semaphore.availablePermits());
+        }, 0, 1, TimeUnit.SECONDS);
+    }
+
+    public void acquire() throws InterruptedException {
+        semaphore.acquire();
+    }
+}
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