312 lines
10 KiB
Go
312 lines
10 KiB
Go
//go:build unit
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package service
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import (
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"context"
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"errors"
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"strconv"
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"strings"
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"testing"
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"github.com/stretchr/testify/require"
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)
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// stubConcurrencyCacheForTest 用于并发服务单元测试的缓存桩
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type stubConcurrencyCacheForTest struct {
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acquireResult bool
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acquireErr error
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releaseErr error
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concurrency int
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concurrencyErr error
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waitAllowed bool
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waitErr error
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waitCount int
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waitCountErr error
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loadBatch map[int64]*AccountLoadInfo
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loadBatchErr error
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usersLoadBatch map[int64]*UserLoadInfo
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usersLoadErr error
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cleanupErr error
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// 记录调用
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releasedAccountIDs []int64
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releasedRequestIDs []string
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}
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var _ ConcurrencyCache = (*stubConcurrencyCacheForTest)(nil)
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func (c *stubConcurrencyCacheForTest) AcquireAccountSlot(_ context.Context, _ int64, _ int, _ string) (bool, error) {
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return c.acquireResult, c.acquireErr
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}
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func (c *stubConcurrencyCacheForTest) ReleaseAccountSlot(_ context.Context, accountID int64, requestID string) error {
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c.releasedAccountIDs = append(c.releasedAccountIDs, accountID)
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c.releasedRequestIDs = append(c.releasedRequestIDs, requestID)
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return c.releaseErr
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}
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func (c *stubConcurrencyCacheForTest) GetAccountConcurrency(_ context.Context, _ int64) (int, error) {
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return c.concurrency, c.concurrencyErr
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}
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func (c *stubConcurrencyCacheForTest) GetAccountConcurrencyBatch(_ context.Context, accountIDs []int64) (map[int64]int, error) {
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result := make(map[int64]int, len(accountIDs))
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for _, accountID := range accountIDs {
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if c.concurrencyErr != nil {
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return nil, c.concurrencyErr
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}
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result[accountID] = c.concurrency
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}
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return result, nil
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}
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func (c *stubConcurrencyCacheForTest) IncrementAccountWaitCount(_ context.Context, _ int64, _ int) (bool, error) {
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return c.waitAllowed, c.waitErr
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}
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func (c *stubConcurrencyCacheForTest) DecrementAccountWaitCount(_ context.Context, _ int64) error {
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return nil
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}
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func (c *stubConcurrencyCacheForTest) GetAccountWaitingCount(_ context.Context, _ int64) (int, error) {
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return c.waitCount, c.waitCountErr
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}
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func (c *stubConcurrencyCacheForTest) AcquireUserSlot(_ context.Context, _ int64, _ int, _ string) (bool, error) {
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return c.acquireResult, c.acquireErr
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}
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func (c *stubConcurrencyCacheForTest) ReleaseUserSlot(_ context.Context, _ int64, _ string) error {
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return c.releaseErr
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}
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func (c *stubConcurrencyCacheForTest) GetUserConcurrency(_ context.Context, _ int64) (int, error) {
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return c.concurrency, c.concurrencyErr
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}
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func (c *stubConcurrencyCacheForTest) IncrementWaitCount(_ context.Context, _ int64, _ int) (bool, error) {
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return c.waitAllowed, c.waitErr
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}
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func (c *stubConcurrencyCacheForTest) DecrementWaitCount(_ context.Context, _ int64) error {
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return nil
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}
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func (c *stubConcurrencyCacheForTest) GetAccountsLoadBatch(_ context.Context, _ []AccountWithConcurrency) (map[int64]*AccountLoadInfo, error) {
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return c.loadBatch, c.loadBatchErr
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}
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func (c *stubConcurrencyCacheForTest) GetUsersLoadBatch(_ context.Context, _ []UserWithConcurrency) (map[int64]*UserLoadInfo, error) {
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return c.usersLoadBatch, c.usersLoadErr
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}
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func (c *stubConcurrencyCacheForTest) CleanupExpiredAccountSlots(_ context.Context, _ int64) error {
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return c.cleanupErr
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}
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func TestAcquireAccountSlot_Success(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{acquireResult: true}
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svc := NewConcurrencyService(cache)
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result, err := svc.AcquireAccountSlot(context.Background(), 1, 5)
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require.NoError(t, err)
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require.True(t, result.Acquired)
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require.NotNil(t, result.ReleaseFunc)
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}
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func TestAcquireAccountSlot_Failure(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{acquireResult: false}
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svc := NewConcurrencyService(cache)
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result, err := svc.AcquireAccountSlot(context.Background(), 1, 5)
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require.NoError(t, err)
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require.False(t, result.Acquired)
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require.Nil(t, result.ReleaseFunc)
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}
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func TestAcquireAccountSlot_UnlimitedConcurrency(t *testing.T) {
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svc := NewConcurrencyService(&stubConcurrencyCacheForTest{})
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for _, maxConcurrency := range []int{0, -1} {
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result, err := svc.AcquireAccountSlot(context.Background(), 1, maxConcurrency)
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require.NoError(t, err)
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require.True(t, result.Acquired, "maxConcurrency=%d 应无限制通过", maxConcurrency)
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require.NotNil(t, result.ReleaseFunc, "ReleaseFunc 应为 no-op 函数")
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}
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}
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func TestAcquireAccountSlot_CacheError(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{acquireErr: errors.New("redis down")}
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svc := NewConcurrencyService(cache)
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result, err := svc.AcquireAccountSlot(context.Background(), 1, 5)
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require.Error(t, err)
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require.Nil(t, result)
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}
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func TestAcquireAccountSlot_ReleaseDecrements(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{acquireResult: true}
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svc := NewConcurrencyService(cache)
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result, err := svc.AcquireAccountSlot(context.Background(), 42, 5)
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require.NoError(t, err)
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require.True(t, result.Acquired)
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// 调用 ReleaseFunc 应释放槽位
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result.ReleaseFunc()
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require.Len(t, cache.releasedAccountIDs, 1)
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require.Equal(t, int64(42), cache.releasedAccountIDs[0])
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require.Len(t, cache.releasedRequestIDs, 1)
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require.NotEmpty(t, cache.releasedRequestIDs[0], "requestID 不应为空")
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}
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func TestAcquireUserSlot_IndependentFromAccount(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{acquireResult: true}
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svc := NewConcurrencyService(cache)
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// 用户槽位获取应独立于账户槽位
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result, err := svc.AcquireUserSlot(context.Background(), 100, 3)
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require.NoError(t, err)
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require.True(t, result.Acquired)
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require.NotNil(t, result.ReleaseFunc)
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}
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func TestAcquireUserSlot_UnlimitedConcurrency(t *testing.T) {
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svc := NewConcurrencyService(&stubConcurrencyCacheForTest{})
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result, err := svc.AcquireUserSlot(context.Background(), 1, 0)
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require.NoError(t, err)
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require.True(t, result.Acquired)
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}
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func TestGenerateRequestID_UsesStablePrefixAndMonotonicCounter(t *testing.T) {
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id1 := generateRequestID()
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id2 := generateRequestID()
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require.NotEmpty(t, id1)
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require.NotEmpty(t, id2)
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p1 := strings.Split(id1, "-")
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p2 := strings.Split(id2, "-")
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require.Len(t, p1, 2)
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require.Len(t, p2, 2)
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require.Equal(t, p1[0], p2[0], "同一进程前缀应保持一致")
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n1, err := strconv.ParseUint(p1[1], 36, 64)
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require.NoError(t, err)
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n2, err := strconv.ParseUint(p2[1], 36, 64)
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require.NoError(t, err)
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require.Equal(t, n1+1, n2, "计数器应单调递增")
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}
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func TestGetAccountsLoadBatch_ReturnsCorrectData(t *testing.T) {
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expected := map[int64]*AccountLoadInfo{
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1: {AccountID: 1, CurrentConcurrency: 3, WaitingCount: 0, LoadRate: 60},
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2: {AccountID: 2, CurrentConcurrency: 5, WaitingCount: 2, LoadRate: 100},
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}
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cache := &stubConcurrencyCacheForTest{loadBatch: expected}
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svc := NewConcurrencyService(cache)
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accounts := []AccountWithConcurrency{
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{ID: 1, MaxConcurrency: 5},
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{ID: 2, MaxConcurrency: 5},
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}
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result, err := svc.GetAccountsLoadBatch(context.Background(), accounts)
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require.NoError(t, err)
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require.Equal(t, expected, result)
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}
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func TestGetAccountsLoadBatch_NilCache(t *testing.T) {
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svc := &ConcurrencyService{cache: nil}
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result, err := svc.GetAccountsLoadBatch(context.Background(), nil)
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require.NoError(t, err)
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require.Empty(t, result)
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}
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func TestIncrementWaitCount_Success(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{waitAllowed: true}
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svc := NewConcurrencyService(cache)
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allowed, err := svc.IncrementWaitCount(context.Background(), 1, 25)
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require.NoError(t, err)
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require.True(t, allowed)
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}
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func TestIncrementWaitCount_QueueFull(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{waitAllowed: false}
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svc := NewConcurrencyService(cache)
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allowed, err := svc.IncrementWaitCount(context.Background(), 1, 25)
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require.NoError(t, err)
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require.False(t, allowed)
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}
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func TestIncrementWaitCount_FailOpen(t *testing.T) {
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// Redis 错误时应 fail-open（允许请求通过）
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cache := &stubConcurrencyCacheForTest{waitErr: errors.New("redis timeout")}
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svc := NewConcurrencyService(cache)
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allowed, err := svc.IncrementWaitCount(context.Background(), 1, 25)
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require.NoError(t, err, "Redis 错误不应传播")
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require.True(t, allowed, "Redis 错误时应 fail-open")
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}
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func TestIncrementWaitCount_NilCache(t *testing.T) {
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svc := &ConcurrencyService{cache: nil}
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allowed, err := svc.IncrementWaitCount(context.Background(), 1, 25)
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require.NoError(t, err)
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require.True(t, allowed, "nil cache 应 fail-open")
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}
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func TestCalculateMaxWait(t *testing.T) {
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tests := []struct {
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concurrency int
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expected int
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}{
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{5, 25}, // 5 + 20
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{1, 21}, // 1 + 20
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{0, 21}, // min(1) + 20
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{-1, 21}, // min(1) + 20
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{10, 30}, // 10 + 20
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}
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for _, tt := range tests {
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result := CalculateMaxWait(tt.concurrency)
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require.Equal(t, tt.expected, result, "CalculateMaxWait(%d)", tt.concurrency)
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}
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}
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func TestGetAccountWaitingCount(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{waitCount: 5}
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svc := NewConcurrencyService(cache)
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count, err := svc.GetAccountWaitingCount(context.Background(), 1)
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require.NoError(t, err)
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require.Equal(t, 5, count)
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}
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func TestGetAccountWaitingCount_NilCache(t *testing.T) {
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svc := &ConcurrencyService{cache: nil}
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count, err := svc.GetAccountWaitingCount(context.Background(), 1)
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require.NoError(t, err)
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require.Equal(t, 0, count)
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}
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func TestGetAccountConcurrencyBatch(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{concurrency: 3}
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svc := NewConcurrencyService(cache)
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result, err := svc.GetAccountConcurrencyBatch(context.Background(), []int64{1, 2, 3})
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require.NoError(t, err)
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require.Len(t, result, 3)
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for _, id := range []int64{1, 2, 3} {
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require.Equal(t, 3, result[id])
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}
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}
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func TestIncrementAccountWaitCount_FailOpen(t *testing.T) {
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cache := &stubConcurrencyCacheForTest{waitErr: errors.New("redis error")}
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svc := NewConcurrencyService(cache)
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allowed, err := svc.IncrementAccountWaitCount(context.Background(), 1, 10)
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require.NoError(t, err, "Redis 错误不应传播")
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require.True(t, allowed, "Redis 错误时应 fail-open")
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}
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func TestIncrementAccountWaitCount_NilCache(t *testing.T) {
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svc := &ConcurrencyService{cache: nil}
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allowed, err := svc.IncrementAccountWaitCount(context.Background(), 1, 10)
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require.NoError(t, err)
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require.True(t, allowed)
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}
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