- Introduced end-to-end tests to verify component invariant metrics across the entire test suite. ([#133394](https://github.com/kubernetes/kubernetes/pull/133394), [@BenTheElder](https://github.com/BenTheElder))
- Introduced new kubelet metrics for the Ensure Secret Pulled Images KEP, including:

        // This will make sure that tasks don't get stuck busy waiting.
        // Some of this is fixed in jdk11 (see https://bugs.openjdk.org/browse/JDK-8198692) but
        // not all.  See the test cases for examples on how this can happen.
        try {
          ((Thread) currentRunner).interrupt();
        } finally {
          Runnable prev = getAndSet(DONE);
          if (prev == PARKED) {

    return doBuild(this);
  }

  // Split out so that the anonymous ThreadFactory can't contain a reference back to the builder.
  // At least, I assume that's why. TODO(cpovirk): Check, and maybe add a test for this.
  @SuppressWarnings("ThreadPriorityCheck") // We only propagate user requests (which we discourage).
  private static ThreadFactory doBuild(ThreadFactoryBuilder builder) {
    String nameFormat = builder.nameFormat;

import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit tests for {@link SetView}s: {@link Sets#union}, {@link Sets#intersection}, {@link
 * Sets#difference}, and {@link Sets#symmetricDifference}.
 *

import java.util.jar.Manifest;
import java.util.logging.Logger;
import java.util.zip.ZipEntry;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.junit.Test;

/** Functional tests of {@link ClassPath}. */
@NullUnmarked
public class ClassPathTest extends TestCase {
  private static final Logger log = Logger.getLogger(ClassPathTest.class.getName());

    private final Map<String, AtomicLong> rateLimitCounters = new ConcurrentHashMap<>();
    private volatile long rateLimitWindow = 60000; // 1 minute
    private volatile int maxEventsPerWindow = 10000; // Increased for tests

    /**
     * Security event types
     */
    public enum EventType {

發生過好幾次，PR 有 3、5 個甚至更多核可，可能是因為描述很吸引人，但當我實際檢查時，它其實是壞的、有 bug，或是根本沒有解決它宣稱要解決的問題。😅

所以，真的很重要的是你要實際閱讀並執行程式碼，並在留言中讓我知道你做過了。🤓

///

* 如果 PR 有機會再被簡化，你可以提出要求，但沒必要太過挑剔，很多事情是主觀的（我自己也會有主觀看法 🙈），所以最好聚焦在關鍵的事情上。

### 測試 { #tests }

* 幫我確認 PR 有**測試**。

* 檢查在 PR 之前，測試會**失敗**。🚨

* 然後檢查在 PR 之後，測試會**通過**。✅

* 很多 PR 並沒有測試，你可以**提醒**他們加上測試，或甚至**建議**一些測試。這是最花時間的事之一，而你可以在這方面幫上很大的忙。

* 接著也請留言你嘗試了什麼，這樣我就知道你有檢查過。🤓

      }
      return result;
    }

    @Override
    public String toString() {
      return "Ordering.arbitrary()";
    }

    /*
     * We need to be able to mock identityHashCode() calls for tests, because it
     * can take 1-10 seconds to find colliding objects. Mocking frameworks that
     * can do magic to mock static method calls still can't do so for a system

n,"")+"|^"+this.weekdaysShort(n,"")+"|^"+this.weekdaysMin(n,""),this._weekdaysParse[s]=new RegExp(r.replace(".",""),"i")),t&&"dddd"===a&&this._fullWeekdaysParse[s].test(e))return s;if(t&&"ddd"===a&&this._shortWeekdaysParse[s].test(e))return s;if(t&&"dd"===a&&this._minWeekdaysParse[s].test(e))return s;if(!t&&this._weekdaysParse[s].test(e))return s}},pt.weekdaysRegex=function(e){return this._weekdaysParseExact?(h(this,"_weekdaysRegex")||$e.call(this),e?this._weekdaysStrictRegex:this._weekdaysRegex...

import com.google.common.testing.ClassSanityTester;
import java.util.Arrays;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit tests for {@link HashCode}.
 *
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
public class HashCodeTest extends TestCase {
  // note: asInt(), asLong() are in little endian