test: opcodes that introspect tx outputs

[pinheadmz]

Increase test coverage of Script module with the new handshake opcodes OP_CHECKOUTPUT and OP_TYPE.

These unit tests could be the basis for an integration test or separate application that uses hot/cold keys to build the update/transfer name-ownership script described in the whitepaper.

[codecov-io]

Codecov Report

Merging #226 into master will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #226      +/-   ##
==========================================
+ Coverage   52.99%   53.03%   +0.04%     
==========================================
  Files         129      129              
  Lines       35773    35773              
  Branches     6032     6032              
==========================================
+ Hits        18957    18973      +16     
+ Misses      16816    16800      -16

Impacted Files	Coverage Δ
lib/script/script.js	58% <0%> (+0.07%)	⬆️
lib/primitives/covenant.js	70.18% <0%> (+0.45%)	⬆️
lib/primitives/coin.js	78.19% <0%> (+10.52%)	⬆️

---

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 cc1ef7a...4275950. Read the comment docs.

[pinheadmz]

Updated to include OP_TYPE only, assuming #230 will be merged and remove OP_CHECKOUTPUT from the protocol

[tynes]

ACK 4275950

This looks good to me. I cloned and increased the size of the iteration loop to outside of the set of defined covenants and it still worked.

[pinheadmz]

rebase to c5daaaa:
rebase on master, diff is null

$ git range-diff  4275950~..4275950  c5daaaa~..c5daaaa
1:  42759501 = 1:  c5daaaad test: OP_TYPE

[coveralls]

Pull Request Test Coverage Report for Build 204169981

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 58.997%

---

Files with Coverage Reduction	New Missed Lines	%
lib/protocol/consensus.js	1	82.79%

Totals
Change from base Build 204069182:	0.01%
Covered Lines:	19287
Relevant Lines:	30406

---

💛 - Coveralls