Function TestDigestHelperWithDelExArgs

digest_test.go:441–498

TestDigestHelperWithDelExArgs validates conditional delete using client-side digest calculation

(t *testing.T)

// TestDigestHelperWithDelExArgs validates conditional delete using
// client-side digest calculation
func TestDigestHelperWithDelExArgs(t *testing.T) {
	skipIfRedisBelow84(t)

	ctx := context.Background()
	client := redis.NewClient(&redis.Options{
		Addr: "localhost:6379",
	})
	defer client.Close()

	if err := client.Ping(ctx).Err(); err != nil {
		t.Skipf("Redis not available: %v", err)
	}

	key := "helper-delexargs-test"
	client.Del(ctx, key)

	// Set value
	value := "delete-me-please"
	err := client.Set(ctx, key, value, 0).Err()
	if err != nil {
		t.Fatalf("Failed to set value: %v", err)
	}

	// Calculate digest client-side
	clientDigest := helper.DigestString(value)
	t.Logf("Client-calculated digest: 0x%016x", clientDigest)

	// Try to delete with wrong digest (should fail)
	wrongDigest := helper.DigestString("wrong")
	deleted := client.DelExArgs(ctx, key, redis.DelExArgs{
		Mode:        "IFDEQ",
		MatchDigest: wrongDigest,
	}).Val()

	if deleted != 0 {
		t.Errorf("Delete with wrong client digest should fail")
	} else {
		t.Logf("✓ DelExArgs with wrong client digest correctly refused")
	}

	// Delete with correct client-calculated digest (should succeed)
	deleted = client.DelExArgs(ctx, key, redis.DelExArgs{
		Mode:        "IFDEQ",
		MatchDigest: clientDigest,
	}).Val()

	if deleted != 1 {
		t.Errorf("Delete with correct client digest should succeed")
	} else {
		t.Logf("✓ DelExArgs with client-calculated digest succeeded")
	}

	// Verify deletion
	exists := client.Exists(ctx, key).Val()
	if exists != 0 {
		t.Errorf("Key should be deleted")
	}
}