wehub-resource-sync
46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
package agent
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import (
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"sync"
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"testing"
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"reasonix/internal/provider"
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)
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// TestSessionConcurrentAddAndRead models the real hazard: the run loop appends
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// messages while a frontend (serve /history, autosave) reads the log from another
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// goroutine. Snapshot must copy under the lock; before it, an append racing the
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// copy could tear the slice header and crash.
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func TestSessionConcurrentAddAndRead(t *testing.T) {
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s := NewSession("sys")
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var wg sync.WaitGroup
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// One writer mimicking the turn goroutine.
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wg.Add(1)
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go func() {
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defer wg.Done()
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for i := 0; i < 5000; i++ {
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s.Add(provider.Message{Role: provider.RoleUser, Content: "msg"})
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}
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}()
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// Many readers mimicking frontends polling history.
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for r := 0; r < 16; r++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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for i := 0; i < 5000; i++ {
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snap := s.Snapshot()
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for _, m := range snap { // iterate the copy: must never tear
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_ = m.Content
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}
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_ = s.HasContent()
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}
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}()
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}
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wg.Wait()
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if got := len(s.Snapshot()); got != 5001 { // 5000 + the system prompt
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t.Fatalf("final message count = %d, want 5001", got)
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}
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}
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