chore(backend): configure test coverage

backend/.gitignore

@@ -3,3 +3,4 @@
 /dist
 /tmp/*
 !/tmp/.gitkeep
+/coverage

backend/jest.config.js

@@ -18,13 +18,13 @@ module.exports = {
   clearMocks: true,
 
   // Indicates whether the coverage information should be collected while executing the test
-  // collectCoverage: false,
+  collectCoverage: true,
 
   // An array of glob patterns indicating a set of files for which coverage information should be collected
-  // collectCoverageFrom: undefined,
+  collectCoverageFrom: ['<rootDir>/src/modules/**/services/*.ts'],
 
   // The directory where Jest should output its coverage files
-  // coverageDirectory: undefined,
+  coverageDirectory: 'coverage',
 
   // An array of regexp pattern strings used to skip coverage collection
   // coveragePathIgnorePatterns: [
@@ -35,12 +35,7 @@ module.exports = {
   coverageProvider: 'v8',
 
   // A list of reporter names that Jest uses when writing coverage reports
-  // coverageReporters: [
-  //   "json",
-  //   "text",
-  //   "lcov",
-  //   "clover"
-  // ],
+  coverageReporters: ['text-summary', 'lcov'],
 
   // An object that configures minimum threshold enforcement for coverage results
   // coverageThreshold: undefined,