Add test for CharacterValue.HashInput

[robert-e-davidson3]

Closes nothing

Description

For some reason we don't have a test for CharacterValue hashing so I added one.

I used the example of a large grapheme cluster from the spec according to this blog post.

I didn't verify that the output value is correct because my intent here is just to add test coverage in case of regressions. But I can if desired.

---

• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[github-actions]

Cadence Benchstat comparison

This branch with compared with the base branch onflow:master commit de9ccd9
The command for i in {1..N}; do go test ./... -run=XXX -bench=. -shuffle=on; done was used.
Bench tests were run a total of 7 times on each branch.

Results

	old.txt	new.txt
	time/op		delta
QualifiedIdentifierCreation/One_level-2	2.42ns ± 0%	2.49ns ± 7%	+3.01%	(p=0.015 n=6+7)
ContractInterfaceFungibleToken-2	39.7µs ± 0%	40.9µs ± 6%	+2.89%	(p=0.017 n=7+7)
RuntimeResourceDictionaryValues-2	13.2ms ± 2%	13.3ms ± 2%	~	(p=0.318 n=7+7)
RuntimeFungibleTokenTransfer-2	1.01ms ±32%	1.12ms ±23%	~	(p=0.383 n=7+7)
ParseDeploy/byte_array-2	18.6ms ± 0%	18.6ms ± 2%	~	(p=0.628 n=6+7)
ParseDeploy/decode_hex-2	1.13ms ± 0%	1.13ms ± 0%	~	(p=0.101 n=6+7)
ParseInfix-2	8.62µs ± 6%	8.47µs ± 0%	~	(p=0.366 n=7+6)
ParseArray-2	12.4ms ± 9%	12.4ms ± 9%	~	(p=0.318 n=7+7)
ParseFungibleToken-2	183µs ± 1%	182µs ± 0%	~	(p=0.234 n=7+6)
QualifiedIdentifierCreation/Three_levels-2	123ns ± 0%	123ns ± 0%	~	(p=0.976 n=7+7)
CheckContractInterfaceFungibleTokenConformance-2	127µs ± 0%	127µs ± 1%	~	(p=1.000 n=6+7)
InterpretRecursionFib-2	2.51ms ± 1%	2.50ms ± 1%	~	(p=0.589 n=6+6)
NewInterpreter/new_interpreter-2	1.04µs ± 0%	1.04µs ± 1%	~	(p=0.254 n=6+7)
NewInterpreter/new_sub-interpreter-2	2.18µs ± 2%	2.17µs ± 1%	~	(p=0.225 n=6+6)
	alloc/op		delta
RuntimeResourceDictionaryValues-2	4.05MB ± 0%	4.05MB ± 0%	~	(p=0.318 n=7+7)
RuntimeFungibleTokenTransfer-2	282kB ± 0%	282kB ± 0%	~	(p=0.097 n=7+7)
QualifiedIdentifierCreation/One_level-2	0.00B	0.00B	~	(all equal)
QualifiedIdentifierCreation/Three_levels-2	64.0B ± 0%	64.0B ± 0%	~	(all equal)
CheckContractInterfaceFungibleTokenConformance-2	66.2kB ± 0%	66.2kB ± 0%	~	(all equal)
ContractInterfaceFungibleToken-2	26.6kB ± 0%	26.6kB ± 0%	~	(p=0.592 n=7+7)
InterpretRecursionFib-2	1.24MB ± 0%	1.24MB ± 0%	~	(all equal)
NewInterpreter/new_interpreter-2	768B ± 0%	768B ± 0%	~	(all equal)
NewInterpreter/new_sub-interpreter-2	1.24kB ± 0%	1.24kB ± 0%	~	(all equal)
	allocs/op		delta
RuntimeResourceDictionaryValues-2	102k ± 0%	102k ± 0%	~	(p=0.139 n=7+7)
RuntimeFungibleTokenTransfer-2	4.54k ± 0%	4.54k ± 0%	~	(p=0.735 n=7+7)
QualifiedIdentifierCreation/One_level-2	0.00	0.00	~	(all equal)
QualifiedIdentifierCreation/Three_levels-2	2.00 ± 0%	2.00 ± 0%	~	(all equal)
CheckContractInterfaceFungibleTokenConformance-2	1.07k ± 0%	1.07k ± 0%	~	(all equal)
ContractInterfaceFungibleToken-2	458 ± 0%	458 ± 0%	~	(all equal)
InterpretRecursionFib-2	25.0k ± 0%	25.0k ± 0%	~	(all equal)
NewInterpreter/new_interpreter-2	12.0 ± 0%	12.0 ± 0%	~	(all equal)
NewInterpreter/new_sub-interpreter-2	38.0 ± 0%	38.0 ± 0%	~	(all equal)

[turbolent]

Great catch and great test case! 👍