Update: add 2-calcul.js file

Author: Mar-Issah

0x06-unittests_in_js/2-calcul_chai.js

@@ -0,0 +1,14 @@
+const calculateNumber = (operator, a, b) => {
+  if (operator === 'SUM') {
+    return Math.round(a) + Math.round(b);
+  }
+  if (operator === 'SUBTRACT') {
+    return Math.round(a) - Math.round(b);
+  }
+  if (operator === 'DIVIDE') {
+    return Math.round(b) === 0 ? 'Error' : Math.round(a) / Math.round(b);
+  }
+  return 0;
+};
+
+module.exports = calculateNumber;

0x06-unittests_in_js/2-calcul_chai.test.js

@@ -0,0 +1,132 @@
+const { expect } = require('chai');
+const calculateNumber = require('./2-calcul_chai');
+
+describe('calculateNumber', () => {
+  describe('type == "SUM"', () => {
+    it('equal positive numbers', () => {
+      expect(calculateNumber('SUM', 2.0, 2.0)).to.equal(4);
+    });
+
+    it('equal negative numbers', () => {
+      expect(calculateNumber('SUM', -2.0, -2.0)).to.equal(-4);
+    });
+    it('equal positive numbers (alternate)', () => {
+      expect(calculateNumber('SUM', 2.3, 1.8)).to.equal(4);
+    });
+
+    it('equal negative numbers (alternate)', () => {
+      expect(calculateNumber('SUM', -2.3, -1.8)).to.equal(-4);
+    });
+
+    it('negative and positive numbers', () => {
+      expect(calculateNumber('SUM', -2.0, 2.0)).to.equal(0);
+    });
+
+    it('positive and negative numbers', () => {
+      expect(calculateNumber('SUM', 2.0, -2.0)).to.equal(0);
+    });
+
+    it('0 and 0', () => {
+      expect(calculateNumber('SUM', 0.0, 0.0)).to.equal(0);
+    });
+  });
+
+  describe('type == "SUBTRACT"', () => {
+    it('equal positive numbers', () => {
+      expect(calculateNumber('SUBTRACT', 0.0, 0.0)).to.equal(0);
+    });
+
+    it('equal positive numbers (alternate)', () => {
+      expect(calculateNumber('SUBTRACT', 2.3, 1.8)).to.equal(0);
+    });
+
+    it('equal negative numbers', () => {
+      expect(calculateNumber('SUBTRACT', -3.0, -3.0)).to.equal(0);
+    });
+
+    it('equal negative numbers (alternate)', () => {
+      expect(calculateNumber('SUBTRACT', -2.3, -1.8)).to.equal(0);
+    });
+
+    it('negative and positive numbers', () => {
+      expect(calculateNumber('SUBTRACT', -3.0, 2.0)).to.equal(-5.0);
+    });
+
+    it('positive and negative numbers', () => {
+      expect(calculateNumber('SUBTRACT', 2.0, -2.0)).to.equal(4.0);
+    });
+
+    it('0 and 0', () => {
+      expect(calculateNumber('SUBTRACT', 1.0, 0.0)).to.equal(1);
+    });
+  });
+
+  describe('type == "DIVIDE"', () => {
+    it('positive numbers', () => {
+      expect(calculateNumber('DIVIDE', 8.0, 2.0)).to.equal(4.0);
+    });
+
+    it('numbers with different signs', () => {
+      expect(calculateNumber('DIVIDE', -7.0, 2.0)).to.equal(-3.5);
+    });
+
+    it('numbers with different signs (alternate)', () => {
+      expect(calculateNumber('DIVIDE', 7.0, -2.0)).to.equal(-3.5);
+    });
+    it('equal positive numbers', () => {
+      expect(calculateNumber('DIVIDE', 2.0, 2.0)).to.equal(1);
+    });
+
+    it('negative numbers', () => {
+      expect(calculateNumber('DIVIDE', -7.0, -2.0)).to.equal(3.5);
+    });
+
+    it('equal negative numbers', () => {
+      expect(calculateNumber('DIVIDE', -2.0, -2.0)).to.equal(1);
+    });
+
+    it('equal rounded up numbers', () => {
+      expect(calculateNumber('DIVIDE', 2.6, 3.0)).to.equal(1);
+    });
+
+    it('equal rounded down numbers', () => {
+      expect(calculateNumber('DIVIDE', 2.4, 2.0)).to.equal(1);
+    });
+
+    it('0 and positive number', () => {
+      expect(calculateNumber('DIVIDE', 0.0, 5.0)).to.equal(0);
+    });
+
+    it('0 and negative number', () => {
+      expect(calculateNumber('DIVIDE', 0.0, -5.0)).to.equal(-0);
+    });
+
+    it('positive number and 0', () => {
+      expect(calculateNumber('DIVIDE', 5.0, 0)).to.equal('Error');
+    });
+
+    it('positive number and number rounded down to 0', () => {
+      expect(calculateNumber('DIVIDE', 5.0, 0.2)).to.equal('Error');
+    });
+
+    it('positive number and number rounded up to 0', () => {
+      expect(calculateNumber('DIVIDE', 5.0, -0.2)).to.equal('Error');
+    });
+
+    it('negative number and 0', () => {
+      expect(calculateNumber('DIVIDE', -5.0, 0)).to.equal('Error');
+    });
+
+    it('negative number and number rounded down to zero', () => {
+      expect(calculateNumber('DIVIDE', -5.0, 0.2)).to.equal('Error');
+    });
+
+    it('negative number and number rounded up to zero', () => {
+      expect(calculateNumber('DIVIDE', -5.0, -0.2)).to.equal('Error');
+    });
+
+    it('0 and 0', () => {
+      expect(calculateNumber('DIVIDE', 0.0, 0.0)).to.equal('Error');
+    });
+  });
+});