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| 1 | package ssh |
| 2 | |
| 3 | import ( |
| 4 | "testing" |
| 5 | "time" |
| 6 | ) |
| 7 | |
| 8 | // A closed server has nothing running. The test harness removes its temporary |
| 9 | // directory as the last cleanup step, and a handler that is still finishing a |
| 10 | // disconnect — writing the last row, dropping the session — would race that removal |
| 11 | // and leave the directory non-empty. So Close ends the connections it is serving and |
| 12 | // waits, and this is the contract that makes it worth doing. |
| 13 | func TestClosingTheServerEndsItsConnections(t *testing.T) { |
| 14 | t.Parallel() |
| 15 | h := newHarness(t) |
| 16 | c := h.runner(t, h.keyPath) |
| 17 | if rep := c.call(runnerRequest{Op: "ping"}); rep.Error != "" { |
| 18 | t.Fatal(rep.Error) |
| 19 | } |
| 20 | |
| 21 | if err := h.srv.Close(); err != nil { |
| 22 | t.Fatalf("close: %v", err) |
| 23 | } |
| 24 | |
| 25 | // The session ends because the server ended the connection under it. Waiting for |
| 26 | // it is the assertion: a server that let a handler outlive Close would leave this |
| 27 | // hanging, and that handler would be free to write into the directory the caller |
| 28 | // is about to remove. The error itself is not interesting — EOF is the answer. |
| 29 | waited := make(chan error, 1) |
| 30 | go func() { waited <- c.sess.Wait() }() |
| 31 | select { |
| 32 | case <-waited: |
| 33 | case <-time.After(5 * time.Second): |
| 34 | t.Fatal("the session stayed open after the server closed") |
| 35 | } |
| 36 | } |
| 37 |