move scoringGuide to Score's constructor

Author: kaiosilveira

src/index.js

@@ -1,14 +1,15 @@
 export function score(candidate, medicalExam, scoringGuide) {
-  return new Scorer(candidate, medicalExam).execute(scoringGuide);
+  return new Scorer(candidate, medicalExam, scoringGuide).execute();
 }
 
 export class Scorer {
-  constructor(candidate, medicalExam) {
+  constructor(candidate, medicalExam, scoringGuide) {
     this._candidate = candidate;
     this._medicalExam = medicalExam;
+    this._scoringGuide = scoringGuide;
   }
 
-  execute(scoringGuide) {
+  execute() {
     let result = 0;
     let healthLevel = 0;
     let highMedicalRiskFlag = false;
@@ -19,7 +20,7 @@ export class Scorer {
     }
 
     let certificationGrade = 'regular';
-    if (scoringGuide.stateWithLowCertification(this._candidate.originState)) {
+    if (this._scoringGuide.stateWithLowCertification(this._candidate.originState)) {
       certificationGrade = 'low';
       result -= 5;
     }

src/index.test.js

@@ -40,34 +40,34 @@ describe('Scorer', () => {
     const medicalExam = { isSmoker: false };
     const scoringGuide = { stateWithLowCertification: () => false };
 
-    const scorer = new Scorer(candidate, medicalExam);
-    expect(scorer.execute(scoringGuide)).toBe(0);
+    const scorer = new Scorer(candidate, medicalExam, scoringGuide);
+    expect(scorer.execute()).toBe(0);
   });
 
   it('should return -5 if candidate is not a smoker and has a low certification grade', () => {
     const candidate = { originState: 'FL' };
     const medicalExam = { isSmoker: false };
     const scoringGuide = { stateWithLowCertification: () => true };
 
-    const scorer = new Scorer(candidate, medicalExam);
-    expect(scorer.execute(scoringGuide)).toBe(-5);
+    const scorer = new Scorer(candidate, medicalExam, scoringGuide);
+    expect(scorer.execute()).toBe(-5);
   });
 
   it('should return -5 if candidate is a smoker and has a regular certification grade', () => {
     const candidate = { originState: 'FL' };
     const medicalExam = { isSmoker: true };
     const scoringGuide = { stateWithLowCertification: () => false };
 
-    const scorer = new Scorer(candidate, medicalExam);
-    expect(scorer.execute(scoringGuide)).toBe(-5);
+    const scorer = new Scorer(candidate, medicalExam, scoringGuide);
+    expect(scorer.execute()).toBe(-5);
   });
 
   it('should return -10 if candidate is a smoker and has a low certification grade', () => {
     const candidate = { originState: 'FL' };
     const medicalExam = { isSmoker: true };
     const scoringGuide = { stateWithLowCertification: () => true };
 
-    const scorer = new Scorer(candidate, medicalExam);
-    expect(scorer.execute(scoringGuide)).toBe(-10);
+    const scorer = new Scorer(candidate, medicalExam, scoringGuide);
+    expect(scorer.execute()).toBe(-10);
   });
 });