Integration tests: simple send-tx, send-tx, create-tokens, mint and melt tokens

[tuliomir]

This pull request is the second phase of the implementation of Integration Tests on the Hathow Wallet Headless, and expands the scope of #149 .

Changes on previous tests:

• The wallets are now instantiated all at once on the WalletHelper.startMultipleWalletsForTest() method. This is a performance improvement, since wallet initialization is the most time-consuming process on the integration tests.
• Genesis wallet initialization was removed from the setupTests-integration.js:beforeAll() method to use the process above.

An effort was made to make the tests use as little transactions as possible, since transactions are the second slowest process on the tests. As the integration tests use Jest's --runInBand configuration, it became possible to use one test's resulting condition as precondition to the next tests.

Sometimes this may compromise the readability of the testing code, but it was a tradeoff for performance.

Acceptance Criteria

• Run the integration tests on the following routes:
  • /wallet/simple-send
  • /wallet/send-tx
  • /wallet/create-tokens
  • /wallet/mint-tokens
  • /wallet/melt-tokens

Security Checklist

• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.

[codecov]

Codecov Report

Merging #152 (02d690b) into dev (a8151b2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #152   +/-   ##
=======================================
  Coverage   81.03%   81.03%           
=======================================
  Files           7        7           
  Lines         464      464           
  Branches      103      103           
=======================================
  Hits          376      376           
  Misses         80       80           
  Partials        8        8           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a8151b2...02d690b. Read the comment docs.

[lgtm-com]

This pull request introduces 1 alert when merging 9416f88 into a8151b2 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class