docs(testing): add info on test coverage

testing: increase timeout to 7000ms for rare occasion goes over 5000
testing: require `check-coverage` and set branches/lines/statements to 95% until `exportParser.js` coverage may be added

Author: brettz9

CONTRIBUTING.md

@@ -43,6 +43,11 @@ See ESLint's [RuleTester](https://eslint.org/docs/developer-guide/nodejs-api#rul
 for more on the allowable properties (e.g., `code`, `errors` (for invalid rules),
 `options`, `settings`, etc.).
 
+Note that besides `npm test`, there is `npm run test-cov` which shows more detailed
+information on coverage. Coverage should be maintained at 100%, and if there are
+a few guards in place for future use, the code block in question can be ignored
+by being preceded by `/* istanbul ignore next */`.
+
 ## Requirements for PRs
 
 PRs should be mergeable, [rebasing](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)

package.json

@@ -64,8 +64,8 @@
     "build": "rm -fr ./dist && NODE_ENV=production babel ./src --out-dir ./dist --copy-files --source-maps",
     "create-readme": "gitdown ./.README/README.md --output-file ./README.md && npm run add-assertions",
     "lint": "eslint ./src ./test",
-    "test-cov": "BABEL_ENV=test nyc mocha --recursive --require @babel/register --reporter progress --timeout 5000",
-    "test": "BABEL_ENV=test nyc --reporter text-summary mocha --recursive --require @babel/register --reporter progress --timeout 5000"
+    "test-cov": "BABEL_ENV=test nyc mocha --recursive --require @babel/register --reporter progress --timeout 7000",
+    "test": "BABEL_ENV=test nyc --reporter text-summary mocha --recursive --require @babel/register --reporter progress --timeout 7000"
   },
   "nyc": {
     "require": [
@@ -75,7 +75,12 @@
     "instrument": false,
     "include": [
       "src/"
-    ]
+    ],
+    "check-coverage": true,
+    "branches": 95,
+    "lines": 95,
+    "functions": 100,
+    "statements": 95
   },
   "version": "1.0.0"
 }