Array test bed

README.md

@@ -1,7 +1,7 @@
 # [sorting-js](https://github.com/neeleshroy/sorting-js)
 
 [![Build Status](https://travis-ci.org/NeeleshRoy/sorting-js.svg?branch=develop)](https://travis-ci.org/NeeleshRoy/sorting-js)
-[![Coverage Status](https://img.shields.io/coveralls/neeleshroy/sorting-js.svg?style=flat-square)](https://coveralls.io/neeleshroy/sorting-js)
+[![Coverage Status](https://coveralls.io/repos/github/NeeleshRoy/sorting-js/badge.svg)](https://coveralls.io/github/NeeleshRoy/sorting-js)
 [![Dependency Status](http://img.shields.io/david/neeleshroy/sorting-js.svg?style=flat-square)](https://david-dm.org/neeleshroy/sorting-js)
 
 > Sorting algorithms implemented in JS

src/utils/ArrayTestBed.js

@@ -0,0 +1,55 @@
+export class ArrayTestBed {
+  constructor(numElements) {
+    this.dataStore = [];
+    this.pos = 0;
+    this.numElements = numElements;
+  }
+
+  setData(random = true) {
+    for (let i = 0; i < this.numElements; i++) {
+      let randomNumber = this.getRandomNumber();
+      if (random) {
+        while (this.dataStore.indexOf(randomNumber) > -1) {
+          randomNumber = this.getRandomNumber();
+        }
+        this.dataStore[i] = randomNumber;
+      } else {
+        this.dataStore[i] = randomNumber;
+      }
+    }
+  }
+
+  getRandomNumber() {
+    return Math.floor(Math.random() *
+    Math.pow(10, this.numElements.toString().length - 1) + 1);
+  }
+
+  getData() {
+    return this.dataStore;
+  }
+
+  insert(element) {
+    this.dataStore[this.pos++] = element;
+  }
+
+  clear() {
+    this.dataStore = [];
+    this.pos = 0;
+  }
+
+  toString() {
+    let returnStr = '';
+    this.dataStore.forEach((value) => {
+      returnStr += `${value},`;
+    });
+    return returnStr;
+  }
+
+  swap(arr, index1, index2) {
+    const arrTemp = arr;
+    const temp = arrTemp[index1];
+    arrTemp[index1] = arrTemp[index2];
+    arrTemp[index2] = temp;
+    return arrTemp;
+  }
+}

test/ArrayTestBed.test.js

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+/**
+ * sorting-js
+ *
+ * Copyright © 2018 Neelesh Roy. All rights reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE.txt file in the root directory of this source tree.
+ */
+
+import { expect } from 'chai';
+import { ArrayTestBed } from '../src/utils/ArrayTestBed';
+
+describe('ArrayTestBed', () => {
+
+  describe('ArrayTestBed - class and properties', () => {
+
+    it('Should have the properties', () => {
+      const test = new ArrayTestBed(100);
+
+      expect(test.dataStore).to.exist;
+      expect(test.pos).to.exist;
+      expect(test.numElements).to.exist;
+
+      expect(test.dataStore).to.eql([]);
+      expect(test.pos).to.eql(0);
+      expect(test.numElements).to.eql(100);
+    });
+
+  });
+
+  describe('ArrayTestBed - setRandomData()', () => {
+
+    it('Should not make any change in datastore', () => {
+      const test = new ArrayTestBed(0);
+      test.setData();
+
+      expect(test.dataStore).to.eql([]);
+    });
+
+    it('Should set random unique data in datastore', () => {
+      const test = new ArrayTestBed(10);
+      test.setData();
+
+      expect(test.dataStore.length).to.eql(10);
+    });
+
+    it('Should set random data in datastore', () => {
+      const test = new ArrayTestBed(10);
+      test.setData(false);
+
+      expect(test.dataStore.length).to.eql(10);
+    });
+
+  });
+
+  describe('ArrayTestBed - getNumbers()', () => {
+
+    it('Should return and empty array', () => {
+      const test = new ArrayTestBed(0);
+      const out = test.getData();
+
+      expect(out).to.eql([]);
+    });
+
+    it('Should get the random data from the datastore', () => {
+      const test = new ArrayTestBed(10);
+      test.setData();
+      const out = test.getData();
+
+      expect(out.length).to.eql(10);
+    });
+
+  });
+
+  describe('ArrayTestBed - clear()', () => {
+
+    it('Should clear the datastore', () => {
+      const test = new ArrayTestBed(10);
+      test.setData();
+      expect(test.dataStore.length).to.eql(10);
+      test.clear();
+      expect(test.dataStore).to.eql([]);
+      expect(test.pos).to.eql(0);
+    });
+
+  });
+
+  describe('ArrayTestBed - toString()', () => {
+
+    it('Should return the elements of datastore in string format', () => {
+      const test = new ArrayTestBed();
+      test.dataStore = [1, 2, 3];
+      const out = test.toString();
+
+      expect(out).to.eql('1,2,3,');
+    });
+
+  });
+
+  describe('ArrayTestBed - swap()', () => {
+
+    it('Should swap the array elements', () => {
+      const test = [1, 2, 3, 4];
+      const arrClass = new ArrayTestBed();
+
+      const out = arrClass.swap(test, 1, 2);
+
+      expect(out).to.eql([1, 3, 2, 4]);
+    });
+
+  });
+
+  describe('ArrayTestBed - insert()', () => {
+
+    it('Should insert the elements inside the array', () => {
+      const test = new ArrayTestBed();
+
+      test.insert(1);
+      test.insert(2);
+      test.insert(3);
+      test.insert(4);
+
+      expect(test.dataStore).to.eql([1, 2, 3, 4]);
+    });
+
+  });
+
+});