Generation seed not working

[bendrissou]

I am trying to use option --random-seed in order to be able to generate the same input when given the same seed number.

However, it's not working, as the generated inputs differ.

I have experimented with multiple grammars, including the json antlr grammar. The following is the command I am using:

grammarinator-generate JSONGenerator.JSONGenerator -r json -o tests/test_1.json -n 1 --random-seed 22 --sys-path .

The versions I tried:

grammarinator-generate 19.3.post125+geecdcb7
grammarinator-generate 19.3.post136+g350ce45

[renatahodovan]

Generating with fixed seed is only supported in single process mode for now (as the help message of --random-seed mentions). To switch to single process mode, you should add the -j=1 argument to your command.

However, this means performance loss ofc... I'll look into how support seeds across multiple processes.