fix test for bls12-381

[ChihChengLiang]

What was wrong?

bls12_381 and optimized_bls12_381 are not tested

How was it fixed?

fix tuple and reuse bn128 test

Cute Animal Picture

[Bhargavasomu]

@ChihChengLiang as part of solving #31 , I am also adding support for testing bls12_381 and optimized_bls12_381 curve. I still haven't opened a PR for this, but almost everything is ready.So merging this would kind of be redundant, if it is a mere copy of the bn128 curve's test cases (please correct me if I am wrong).

@pipermerriam what do you say?

[ChihChengLiang]

Hi @Bhargavasomu , glad to know you are working on this. But recently we would have a radical development in bls12_381 and want some test to cover it. I totally agree this PR is redundant and would be happy if your tests can replace this one.

[pipermerriam]

I'm 👍 on merging this. @Bhargavasomu I believe it should be very low effort to remove the duplication during your efforts. Correct me if you don't feel like that is the case.

[pipermerriam]

@Bhargavasomu

I still haven't opened a PR for this, but almost everything is ready.

I'd highly encourage you to open a PR as soon as you have anything at all and we can mark it as a WIP (work in progress) so it's clear that any review would be preliminary.