test(auth): improve concurrency tests for token cache

pkg/registry/auth/auth_cache_concurrency_test.go

@@ -1,101 +1,101 @@
 package auth
 
 import (
-    "sync"
-    "testing"
-    "time"
+	"sync"
+	"testing"
+	"time"
 )
 
 // Test concurrent stores and gets to ensure the mutex protects the cache
 func TestTokenCacheConcurrentStoreAndGet(t *testing.T) {
-    // reset cache safely
-    tokenCacheMu.Lock()
-    tokenCache = map[string]cachedToken{}
-    tokenCacheMu.Unlock()
+	// reset cache safely
+	tokenCacheMu.Lock()
+	tokenCache = map[string]cachedToken{}
+	tokenCacheMu.Unlock()
 
-    origNow := now
-    defer func() { now = origNow }()
-    now = time.Now
+	origNow := now
+	defer func() { now = origNow }()
+	now = time.Now
 
-    key := "concurrent-key"
-    token := "tok-concurrent"
+	key := "concurrent-key"
+	token := "tok-concurrent"
 
-    var wg sync.WaitGroup
-    storeers := 50
-    getters := 50
-    iters := 100
+	var wg sync.WaitGroup
+	storeers := 50
+	getters := 50
+	iters := 100
 
-    for i := 0; i < storeers; i++ {
-        wg.Add(1)
-        go func() {
-            defer wg.Done()
-            for j := 0; j < iters; j++ {
-                storeToken(key, token, 0)
-            }
-        }()
-    }
+	for i := 0; i < storeers; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := 0; j < iters; j++ {
+				storeToken(key, token, 0)
+			}
+		}()
+	}
 
-    for i := 0; i < getters; i++ {
-        wg.Add(1)
-        go func() {
-            defer wg.Done()
-            for j := 0; j < iters; j++ {
-                _ = getCachedToken(key)
-            }
-        }()
-    }
+	for i := 0; i < getters; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := 0; j < iters; j++ {
+				_ = getCachedToken(key)
+			}
+		}()
+	}
 
-    wg.Wait()
+	wg.Wait()
 
-    if got := getCachedToken(key); got != token {
-        t.Fatalf("expected token %q, got %q", token, got)
-    }
+	if got := getCachedToken(key); got != token {
+		t.Fatalf("expected token %q, got %q", token, got)
+	}
 }
 
 // Test concurrent access while token expires: readers run while time is advanced
 func TestTokenCacheConcurrentExpiry(t *testing.T) {
-    // reset cache safely
-    tokenCacheMu.Lock()
-    tokenCache = map[string]cachedToken{}
-    tokenCacheMu.Unlock()
+	// reset cache safely
+	tokenCacheMu.Lock()
+	tokenCache = map[string]cachedToken{}
+	tokenCacheMu.Unlock()
 
-    // Make now controllable and thread-safe
-    origNow := now
-    defer func() { now = origNow }()
+	// Make now controllable and thread-safe
+	origNow := now
+	defer func() { now = origNow }()
 
-    base := time.Now()
-    var mu sync.Mutex
-    current := base
-    now = func() time.Time {
-        mu.Lock()
-        defer mu.Unlock()
-        return current
-    }
+	base := time.Now()
+	var mu sync.Mutex
+	current := base
+	now = func() time.Time {
+		mu.Lock()
+		defer mu.Unlock()
+		return current
+	}
 
-    key := "concurrent-expire"
-    storeToken(key, "t", 1)
+	key := "concurrent-expire"
+	storeToken(key, "t", 1)
 
-    var wg sync.WaitGroup
-    readers := 100
+	var wg sync.WaitGroup
+	readers := 100
 
-    for i := 0; i < readers; i++ {
-        wg.Add(1)
-        go func() {
-            defer wg.Done()
-            for j := 0; j < 100; j++ {
-                _ = getCachedToken(key)
-            }
-        }()
-    }
+	for i := 0; i < readers; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := 0; j < 100; j++ {
+				_ = getCachedToken(key)
+			}
+		}()
+	}
 
-    // advance time beyond ttl
-    mu.Lock()
-    current = current.Add(2 * time.Second)
-    mu.Unlock()
+	// advance time beyond ttl
+	mu.Lock()
+	current = current.Add(2 * time.Second)
+	mu.Unlock()
 
-    wg.Wait()
+	wg.Wait()
 
-    if got := getCachedToken(key); got != "" {
-        t.Fatalf("expected token to be expired, got %q", got)
-    }
+	if got := getCachedToken(key); got != "" {
+		t.Fatalf("expected token to be expired, got %q", got)
+	}
 }