investigate consistent coverage numbers (#98)

outcome: coverage numbers are only consistent when using `--runInBand`. fortunately the false coverage numbers seem to always be higher than the "real" numbers.

* delegate the coverage work to test:coverage script

* remove test:record and test:update script. not needed

jest.config.js

@@ -24,7 +24,7 @@ module.exports = {
   coverageProvider: "v8",
 
   // A list of reporter names that Jest uses when writing coverage reports
-  coverageReporters: [],
+  coverageReporters: ["text-summary"],
 
   // An object that configures minimum threshold enforcement for coverage results
   coverageThreshold: {

package.json

@@ -14,10 +14,8 @@
     "prepublishOnly": "npm ci --package-lock --omit=dev && npx shx rm package-lock.json && npm shrinkwrap",
     "patch": "npx patch-package",
     "test": "jest",
-    "test:coverage": "jest --coverageReporters=html",
+    "test:coverage": "jest --runInBand --coverageReporters=html --coverageReporters=text-summary",
     "test:remove-inline-snapshots": "npx replace '\\.toMatchInlineSnapshot\\(\\s*`[\\s\\S]*?`\\s*\\);' '.toMatchInlineSnapshot();' test -r --include='*.test.js'",
-    "test:record": "npm run test:record:reg && npm run test:record:cds && npm run test:record:hdi",
-    "test:update": "jest --updateSnapshot",
     "test:record:reg": "jest --runInBand --config jest-nock-record.config.js test-nock-record/tenantRegistry.nock.test.js",
     "test:record:cds": "jest --runInBand --config jest-nock-record.config.js test-nock-record/capMultitenancy.nock.test.js",
     "test:record:hdi": "jest --runInBand --config jest-nock-record.config.js test-nock-record/hanaManagement.nock.test.js",