test: 'nofsync' with deadly signal #26415

Problem:
The test for 'nofsync' swapfile preservation on a deadly signal, does
not actually assert anything.

followup to 1fd29a28841dee3d25ff079eb24fc160eb02cb3c

Solution:
Check that swapfile contents are present after getting SIGTERM.
TODO: this doesn't really verify that 'fsync' was called; it still
passes with this patch:

    diff --git a/src/nvim/main.c b/src/nvim/main.c
    index 216e39f3e81c..7a635520401d 100644
    --- a/src/nvim/main.c
    +++ b/src/nvim/main.c
    @@ -838,7 +838,7 @@ void preserve_exit(const char *errmsg)
           if (errmsg != NULL) {
             os_errmsg("Vim: preserving files...\r\n");
           }
    -      ml_sync_all(false, false, true);  // preserve all swap files
    +      ml_sync_all(false, false, false);  // preserve all swap files
           break;
         }
       }

However it correctly fails with this patch, at least:

    diff --git a/src/nvim/main.c b/src/nvim/main.c
    index 216e39f3e81c..f2306c310ddc 100644
    --- a/src/nvim/main.c
    +++ b/src/nvim/main.c
    @@ -838,7 +838,6 @@ void preserve_exit(const char *errmsg)
           if (errmsg != NULL) {
             os_errmsg("Vim: preserving files...\r\n");
           }
    -      ml_sync_all(false, false, true);  // preserve all swap files
           break;
         }
       }

0 files changed, 0 insertions, 0 deletions