maint(core): clean up test folder structure

Small PR to clean up the folder structure for the tests for core-utils
so that the folders follow the source folders and file names. Planning
to make some improvements to these tests, this is a first simple PR that
will help me do that.

packages/core-utils/package.json

@@ -15,8 +15,8 @@
     "lint:check": "eslint . --max-warnings=0",
     "lint:fix": "yarn lint:check --fix",
     "pre-commit": "lint-staged",
-    "test": "ts-mocha test/*.spec.ts",
-    "test:coverage": "nyc ts-mocha test/*.spec.ts && nyc merge .nyc_output coverage.json"
+    "test": "ts-mocha test/**/*.spec.ts",
+    "test:coverage": "nyc ts-mocha test/**/*.spec.ts && nyc merge .nyc_output coverage.json"
   },
   "keywords": [
     "optimism",

packages/core-utils/test/hex-utils.spec.ts → packages/core-utils/test/common/hex-strings.spec.ts

 import { BigNumber } from '@ethersproject/bignumber'
 
 /* Imports: Internal */
-import { expect } from './setup'
+import { expect } from '../setup'
 import {
   toRpcHexString,
   remove0x,
@@ -12,7 +12,7 @@ import {
   encodeHex,
   hexStringEquals,
   bytes32ify,
-} from '../src'
+} from '../../src'
 
 describe('remove0x', () => {
   it('should return undefined', () => {
@@ -62,6 +62,7 @@ describe('toHexString', () => {
       'The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received null'
     )
   })
+
   it('should return with a hex string', () => {
     const cases = [
       { input: 0, output: '0x00' },
@@ -104,6 +105,7 @@ describe('padHexString', () => {
     expect(padHexString('abcd', 1)).to.deep.equal('abcd')
     expect(padHexString('abcdefgh', 3).length).to.deep.equal(8)
   })
+
   it('should return a string padded with 0x and zeros', () => {
     expect(padHexString('0xabcd', 3)).to.deep.equal('0x00abcd')
   })

packages/core-utils/test/misc.spec.ts → packages/core-utils/test/common/misc.spec.ts

 /* Imports: Internal */
-import { expect } from './setup'
-import { sleep, clone, reqenv, getenv } from '../src'
+import { expect } from '../setup'
+import { sleep, clone, reqenv, getenv } from '../../src'
 
 describe('sleep', async () => {
   it('should return wait input amount of ms', async () => {
@@ -21,7 +21,7 @@ describe('clone', async () => {
 })
 
 describe('reqenv', async () => {
-  let cachedEnvironment
+  let cachedEnvironment: NodeJS.ProcessEnv
   const temporaryEnvironmentKey = 'testVariable'
   const temporaryEnvironment = {
     [temporaryEnvironmentKey]: 'This is an environment variable',
@@ -51,7 +51,7 @@ describe('reqenv', async () => {
 })
 
 describe('getenv', async () => {
-  let cachedEnvironment
+  let cachedEnvironment: NodeJS.ProcessEnv
   const temporaryEnvironmentKey = 'testVariable'
   const temporaryEnvironment = {
     [temporaryEnvironmentKey]: 'This is an environment variable',

packages/core-utils/test/test-utils.spec.ts → packages/core-utils/test/common/test-utils.spec.ts

 import { assert } from 'chai'
 
 /* Imports: Internal */
-import { expect } from './setup'
-import { expectApprox, awaitCondition } from '../src'
+import { expect } from '../setup'
+import { expectApprox, awaitCondition } from '../../src'
 
 describe('awaitCondition', () => {
   it('should try the condition fn until it returns true', async () => {
@@ -42,6 +42,7 @@ describe('expectApprox', () => {
       absoluteLowerDeviation: 20,
     })
   })
+
   it('should pass when the actual number is lower, but within the expected range of the target', async () => {
     expectApprox(81, 100, {
       percentUpperDeviation: 20,
@@ -50,6 +51,7 @@ describe('expectApprox', () => {
       absoluteLowerDeviation: 20,
     })
   })
+
   it('should throw an error when no deviation values are given', async () => {
     try {
       expectApprox(101, 100, {})
@@ -75,6 +77,7 @@ describe('expectApprox', () => {
           )
         }
       })
+
       it('... and absoluteUpperDeviation sets the upper bound', async () => {
         try {
           expectApprox(121, 100, {
@@ -88,6 +91,7 @@ describe('expectApprox', () => {
         }
       })
     })
+
     describe('... when both values are defined', () => {
       it('... and percentUpperDeviation sets the upper bound', async () => {
         try {
@@ -102,6 +106,7 @@ describe('expectApprox', () => {
           )
         }
       })
+
       it('... and absoluteUpperDeviation sets the upper bound', async () => {
         try {
           expectApprox(121, 100, {

packages/core-utils/test/alias.spec.ts → packages/core-utils/test/optimism/alias.spec.ts

-import { expect } from './setup'
-import { applyL1ToL2Alias, undoL1ToL2Alias } from '../src'
+import { expect } from '../setup'
+import { applyL1ToL2Alias, undoL1ToL2Alias } from '../../src'
 
 describe('address aliasing utils', () => {
   describe('applyL1ToL2Alias', () => {

packages/core-utils/test/batch-encoder.spec.ts → packages/core-utils/test/optimism/batch-encoding.spec.ts

-import './setup'
+import '../setup'
 
 /* Internal Imports */
 import { expect } from 'chai'
@@ -9,13 +9,13 @@ import {
   sequencerBatch,
   BatchType,
   SequencerBatch,
-} from '../src'
+} from '../../src'
 
 describe('BatchEncoder', function () {
   this.timeout(10_000)
 
   // eslint-disable-next-line @typescript-eslint/no-var-requires
-  const data = require('./fixtures/calldata.json')
+  const data = require('../fixtures/calldata.json')
 
   describe('appendSequencerBatch', () => {
     it('legacy: should work with the simple case', () => {
@@ -112,6 +112,7 @@ describe('BatchEncoder', function () {
         ],
         transactions: ['0x454234000000112', '0x45423400000012'],
       }
+
       expect(() => encodeAppendSequencerBatch(batch)).to.throw(
         'Unexpected uneven hex string value!'
       )

packages/core-utils/test/fees.spec.ts → packages/core-utils/test/optimism/fees.spec.ts

-import './setup'
+import '../setup'
 
 import { BigNumber } from '@ethersproject/bignumber'
 
-import { zeroesAndOnes, calldataCost } from '../src'
+import { zeroesAndOnes, calldataCost } from '../../src'
 
 describe('Fees', () => {
   it('should count zeros and ones', () => {