| 1 | package bootstrap |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "os" |
| 6 | "strings" |
| 7 | "sync" |
| 8 | "testing" |
| 9 | |
| 10 | "reasonix/internal/remote" |
| 11 | ) |
| 12 | |
| 13 | // probeCounts tallies EnsureServe's remote exec traffic by category. The |
| 14 | // Capability commands include their own liveness-shaped shell fragments, so |
| 15 | // classify them before the general process-liveness shape. |
| 16 | type probeCounts struct { |
| 17 | mu sync.Mutex |
| 18 | pidAlive int // kill -0 / ps -p pid liveness probes |
| 19 | capability int // readlink / serve --help capability probes |
| 20 | other int |
| 21 | } |
| 22 | |
| 23 | func (c *probeCounts) record(cmd string) { |
| 24 | c.mu.Lock() |
| 25 | defer c.mu.Unlock() |
| 26 | switch { |
| 27 | case strings.Contains(cmd, "readlink"), strings.Contains(cmd, "serve --help"): |
| 28 | c.capability++ |
| 29 | case strings.Contains(cmd, "kill -0"), strings.Contains(cmd, "ps -p"): |
| 30 | c.pidAlive++ |
| 31 | default: |
| 32 | c.other++ |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | func (c *probeCounts) snapshot() (pidAlive, capability, other int) { |
| 37 | c.mu.Lock() |
| 38 | defer c.mu.Unlock() |
| 39 | return c.pidAlive, c.capability, c.other |
| 40 | } |
| 41 | |
| 42 | // TestEnsureServeReuseProbeCount pins the reuse path's exec budget: |
| 43 | // EnsureServe's retire and reuse decisions share ONE probe round — one |
| 44 | // liveness exec and one capability exec. More means the duplication crept |
| 45 | // back and every cold start pays it again. |
| 46 | func TestEnsureServeReuseProbeCount(t *testing.T) { |
| 47 | skipOnWindows(t) |
| 48 | root := t.TempDir() |
| 49 | paths := pathsFor(root, root) |
| 50 | if err := os.MkdirAll(paths.Dir, 0o755); err != nil { |
| 51 | t.Fatal(err) |
| 52 | } |
| 53 | st := ServeState{PID: 777, Addr: "127.0.0.1:5000", Workspace: root, TokenFile: paths.TokenFile} |
| 54 | data, _ := MarshalState(st) |
| 55 | if err := os.WriteFile(paths.StateJSON, data, 0o600); err != nil { |
| 56 | t.Fatal(err) |
| 57 | } |
| 58 | if err := os.WriteFile(paths.TokenFile, []byte("existing-token\n"), 0o600); err != nil { |
| 59 | t.Fatal(err) |
| 60 | } |
| 61 | |
| 62 | var c probeCounts |
| 63 | conn := newFakeConn(t, root, func(cmd string) (remote.ExecResult, error) { |
| 64 | c.record(cmd) |
| 65 | switch { |
| 66 | case strings.Contains(cmd, "readlink"), strings.Contains(cmd, "serve --help"): |
| 67 | return ok("yes\n") |
| 68 | case strings.Contains(cmd, "kill -0 777"), strings.Contains(cmd, "ps -p 777"): |
| 69 | return ok("1\n") // alive |
| 70 | default: |
| 71 | return ok("") |
| 72 | } |
| 73 | }) |
| 74 | |
| 75 | res, err := EnsureServe(context.Background(), conn, Options{Workspace: "~"}) |
| 76 | if err != nil { |
| 77 | t.Fatalf("EnsureServe: %v", err) |
| 78 | } |
| 79 | if !res.Reused { |
| 80 | t.Fatal("expected reuse of live process") |
| 81 | } |
| 82 | pidAlive, capability, other := c.snapshot() |
| 83 | if pidAlive != 1 || capability != 1 || other != 0 { |
| 84 | t.Fatalf("reuse-path exec budget regressed: pidAlive=%d capability=%d other=%d, want 1/1/0 (single shared probe round)", pidAlive, capability, other) |
| 85 | } |
| 86 | } |
| 87 |