Merge pull request #6 from EugeneWWolf/Ermakova_Ksenija_Dmitrievna

Pig class finished

rpgsaga/saga/src/pig.ts

@@ -0,0 +1,34 @@
+export class Pig
+{
+    private _mass: number;
+    public identificator: string; // Код на бирке у свиньи
+
+    constructor(mass: number, identificator: string)
+    {
+        this.mass = mass;
+        this.identificator = identificator;
+    }
+
+    get mass(): number
+    {
+        return this._mass;
+    }
+
+    set mass(value: number)
+    {
+        if (value >= 50)
+        {
+            this._mass = value;
+        }
+        else
+        {
+            throw new Error("Pig's mass should be 50 kg or bigger.");
+        }
+    }
+
+    getSalo(): number
+    {
+        // Допускается, что количество получаемого со свиньи сала равно 20% от её массы тела
+        return this._mass * 0.2;
+    }
+}

rpgsaga/saga/tests/pig.spec.ts

@@ -0,0 +1,27 @@
+import { Pig } from '../src/pig';
+
+describe('Testing pig constructor', () => {
+    it('Pig should be created', () => {
+      const pig = new Pig(500, "DIV69");
+      expect(pig.mass).toEqual(500);
+      expect(pig.identificator).toEqual("DIV69");
+    });
+    it('Pig with invalid mass', () => {
+        expect(() => new Pig(10, "RIP38")).toThrow(Error("Pig's mass should be 50 kg or bigger."));
+    });
+});
+
+describe('Testing pig methods', () => {
+    it('Should give right amount of сало', () => {
+        const pig = new Pig(100, "ADB69");
+        expect(pig.getSalo()).toEqual(20);
+    });
+    it('Should be able to return float values', () => {
+        const pig = new Pig(101, "ADB69");
+        expect(pig.getSalo()).toBeCloseTo(20.2);
+    });
+    it('Should be able to work with float values', () => {
+        const pig = new Pig(100.5, "ADB69");
+        expect(pig.getSalo()).toBeCloseTo(20.1);
+    });
+});