Add unit tests for CoursesCounter module

Author: vilasmaciel

package-lock.json

@@ -18,52 +18,52 @@
     "build:clean": "rm -r dist; exit 0"
   },
   "dependencies": {
-    "@types/bson": "^4.0.0",
-    "@types/compression": "^1.0.1",
+    "@types/bson": "^4.0.2",
+    "@types/compression": "^1.7.0",
     "@types/convict": "^4.2.1",
-    "@types/errorhandler": "0.0.32",
-    "@types/express": "^4.17.2",
+    "@types/errorhandler": "1.5.0",
+    "@types/express": "^4.17.3",
     "@types/glob": "^7.1.1",
-    "@types/helmet": "0.0.44",
-    "@types/mongodb": "^3.3.15",
-    "@types/node": "~13.1.1",
-    "@types/uuid": "^3.4.6",
+    "@types/helmet": "0.0.45",
+    "@types/mongodb": "^3.5.4",
+    "@types/node": "^13.9.4",
+    "@types/uuid": "^7.0.2",
     "@types/uuid-validate": "0.0.1",
     "body-parser": "^1.19.0",
-    "bson": "^4.0.2",
+    "bson": "^4.0.4",
     "compression": "^1.7.4",
-    "convict": "^5.1.0",
+    "convict": "^5.2.0",
     "copy": "^0.3.2",
     "errorhandler": "^1.5.1",
     "express": "^4.17.1",
     "glob": "^7.1.6",
-    "helmet": "^3.21.2",
+    "helmet": "^3.22.0",
     "http-status": "^1.4.2",
     "mandrill-api": "^1.0.45",
-    "mongodb": "^3.5.2",
-    "node-dependency-injection": "^2.4.2",
-    "ts-node": "^8.3.0",
-    "typescript": "^3.7.2",
-    "uuid": "^3.3.3",
+    "mongodb": "^3.5.5",
+    "node-dependency-injection": "^2.6.2",
+    "ts-node": "^8.8.1",
+    "typescript": "^3.8.3",
+    "uuid": "^7.0.2",
     "uuid-validate": "0.0.3",
     "winston": "^3.2.1"
   },
   "devDependencies": {
-    "@types/aws-lambda": "^8.10.31",
-    "@types/cucumber": "^4.0.7",
-    "@types/faker": "^4.1.5",
-    "@types/jest": "^24.0.18",
+    "@types/aws-lambda": "^8.10.46",
+    "@types/cucumber": "^6.0.1",
+    "@types/faker": "^4.1.11",
+    "@types/jest": "^25.1.4",
     "@types/supertest": "^2.0.8",
     "cucumber": "^6.0.5",
     "faker": "^4.1.0",
-    "husky": "^1.3.1",
-    "jest": "^24.9.0",
-    "lint-staged": "8.2.1",
-    "prettier": "^1.16.4",
+    "husky": "^4.2.3",
+    "jest": "^25.2.3",
+    "lint-staged": "10.0.9",
+    "prettier": "^2.0.2",
     "supertest": "^4.0.2",
-    "ts-jest": "^24.1.0",
-    "ts-node-dev": "^1.0.0-pre.43",
-    "tslint": "^5.20.1",
+    "ts-jest": "^25.2.1",
+    "ts-node-dev": "^1.0.0-pre.44",
+    "tslint": "^6.1.0",
     "tslint-config-prettier": "~1.18.0",
     "tslint-eslint-rules": "^5.4.0"
   },

package.json

@@ -30,15 +30,15 @@ export class Course extends AggregateRoot {
     return course;
   }
 
-  static fromPrimitives(plainData: any): Course {
+  static fromPrimitives(plainData: { id: string; name: string; duration: string }): Course {
     return new Course(
       new CourseId(plainData.id),
       new CourseName(plainData.name),
       new CourseDuration(plainData.duration)
     );
   }
 
-  toPrimitives(): any {
+  toPrimitives() {
     return {
       id: this.id.value,
       name: this.name.value,