JS test error

[priyochatterjee08]

I am getting following errors in running js tests. Please help me resolve the issues.

1. main circuit tests for Zeto fungible tokens with anonymity without encryption
   should fail to generate a witness because mass conservation is not obeyed:
   AssertionError: expected Error: Error: Assert Failed.
   Error in tem… to match /Error in template CheckHashesAndSum_89 line: 95/
   at Context. (test/anon.js:132:20)
2. main circuit tests for Zeto fungible tokens with anonymity without encryption
   should generate a valid proof that can be verified successfully:
   Error: Invalid witness length. Circuit: 5205, witness: 2061
   at Object.groth16Prove [as prove] (node_modules/snarkjs/build/main.cjs:900:15)
   at async Context. (test/anon.js:169:38)
3. main circuit tests for Zeto fungible tokens with anonymity with encryption
   should fail to generate a witness because mass conservation is not obeyed:
   AssertionError: expected Error: Error: Assert Failed.
   Error in tem… to match /Error in template CheckHashesAndSum_89 line: 95/
   at Context. (test/anon_enc.js:145:20)
4. main circuit tests for Zeto fungible tokens with encryption and anonymity using nullifiers
   should fail to generate a witness because mass conservation is not obeyed:
   AssertionError: expected Error: Error: Assert Failed.
   Error in tem… to match /Error in template CheckNullifierHashesAndSum_246 line: 156/
   at Context. (test/anon_enc_nullifier.js:271:20)
5. main circuit tests for Zeto fungible tokens with anonymity using nullifiers and without encryption
   should fail to generate a witness because mass conservation is not obeyed:
   AssertionError: expected Error: Error: Assert Failed.
   Error in tem… to match /Error in template CheckNullifierHashesAndSum_246 line: 156/
   at Context. (test/anon_nullifier.js:225:20)
6. check-nullifiers circuit tests
   should fail to generate a witness because incorrect values are not used:
   AssertionError: expected Error: Error: Assert Failed.
   Error in tem… to match /Error in template CheckNullifiers_155 line: 63/
   at Context. (test/check_nullifiers.js:119:20)

[Chengxuan]

fixed as part of #27