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chore: import upstream snapshot with attribution
2026-07-13 12:33:42 +08:00

69 lines
2.2 KiB
Go

package lsp
import (
"encoding/json"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// TestLSP_Enrich_CrashLoopGuardAbandonsPass pins the crash-loop guard: a server
// that connects cleanly but keeps exiting mid-request (the clangd/clang-tidy
// failure shape) must not pin the pass in an endless crash -> reconnect -> crash
// loop. After the per-pass cap the provider's enrichment is abandoned with an
// error and a bounded reconnect count, and whatever landed earlier stays.
func TestLSP_Enrich_CrashLoopGuardAbandonsPass(t *testing.T) {
t.Setenv("GORTEX_LSP_SWEEP", "full") // exercise the full per-file sweep, not the demand-gated default
repoRoot, g := seedRepo(t, 60)
server1 := newInstrumentedServer()
p, cleanup := providerWithInstrumentedServer(t, server1, []string{"go"}, 4)
defer cleanup()
// Keep backoff tiny so the crash loop churns quickly.
p.dialBackoffStart = 1 * time.Millisecond
p.maxDialBackoff = 2 * time.Millisecond
kill := func(c *Client) {
c.mu.Lock()
if !c.closed {
c.closed = true
close(c.done)
}
c.mu.Unlock()
}
// dyingHover kills its own client on the first hover, so the initial server
// and every reconnect's replacement die mid-request in turn.
dyingHover := func(c *Client) func(json.RawMessage) (any, *jsonRPCError) {
var once sync.Once
return func(_ json.RawMessage) (any, *jsonRPCError) {
once.Do(func() { kill(c) })
return nil, &jsonRPCError{Code: -32603, Message: "server exited"}
}
}
server1.handle("textDocument/hover", dyingHover(p.client))
var reconnects atomic.Int64
p.connectOnce = func(_ string) error {
reconnects.Add(1)
srv := newInstrumentedServer()
c, in, out, cl := newPipedClient(t)
go srv.run(in, out)
t.Cleanup(cl)
srv.handle("textDocument/hover", dyingHover(c))
p.client = c
return nil
}
err := runEnrich(t, p, g, repoRoot, 20*time.Second)
require.Error(t, err, "a server that keeps crashing must abandon the pass, not loop forever")
n := int(reconnects.Load())
assert.Greater(t, n, 0, "should have attempted at least one reconnect")
assert.LessOrEqual(t, n, maxEnrichReconnectCycles+1,
"reconnects must be bounded by the crash-loop cap, got %d", n)
}