Fix automated (vmchecker) testing for network assignments#279
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Fix automated (vmchecker) testing for network assignments#279
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…gnments Assignment testing is done automatically via vmchecker. This is done with the help of the `so2-startup-script` placed in `/etc/init.d/so2` and then symlinked in `/etc/rcX.d/99so2` (X = 1..6). For networking assignments (i.e. the STP - Simple Transport Protocol), two issues prevent proper testing: 1. Because there is no terminal, standard file descriptors (0, 1, 2) are not initialized. If no redirection is used, then these file descriptors (0, for example) will be used for socket descriptors. Tests for socket() calls assume returned socket file descriptors are > 0. This is fixed by redirecting standard input from `/dev/null`, thus initializing the standard input file descriptor (0). 2. The loopback interface is not initialized. Tests using send/receive calls fails. This is fixed by enabling the loopback interface (`lo`). Signed-off-by: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
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dbaluta
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May 15, 2021
consra
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May 15, 2021
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The solution for problem 1 seems fine for me. All good.
consra
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sergiu121
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May 15, 2021
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Assignment testing is done automatically via vmchecker. This is done
with the help of the
so2-startup-scriptplaced in/etc/init.d/so2and then symlinked in
/etc/rcX.d/99so2(X = 1..6).For networking assignments (i.e. the STP - Simple Transport Protocol),
two issues prevent proper testing:
Because there is no terminal, standard file descriptors (0, 1, 2) are
not initialized. If no redirection is used, then these file descriptors
(0, for example) will be used for socket descriptors. Tests for socket()
calls assume returned socket file descriptors are > 0. This is fixed by
redirecting standard input from
/dev/null, thus initializing thestandard input file descriptor (0).
The loopback interface is not initialized. Tests using send/receive
calls fails. This is fixed by enabling the loopback interface (
lo).Issue 1 could be fixed by updating the test and not redirecting input from
/dev/null. What do you think is the best way to handle this?