Dictionary 🏁

Author: deadcoder0904

examples/datastructures/dictionary.js

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+class Dictionary {
+	constructor() {
+		this.dataStore = [];
+	}
+
+	set(key,value) {
+		this.dataStore[key] = value;
+	}
+
+	get(key) {
+		return this.dataStore[key];
+	}
+
+	remove(key) {
+		delete this.dataStore[key];
+	}
+
+	showAll() {
+		let str = "";
+		for(let key of Object.keys(this.dataStore))
+			str += key + " -> " + this.dataStore[key] + "\n";
+		return str;
+	}
+
+	clear() {
+		this.dataStore = [];
+	}
+}
+
+module.exports = Dictionary;

test/datastructures/dictionary.test.js

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+const expect = require('chai').expect;
+const Dictionary = require('../../examples/datastructures/dictionary');
+
+describe('=> DICTIONARY', function() {
+	let numbers;
+	before(function () {
+		numbers = new Dictionary();
+	});
+
+	it('should create an Empty Dictionary', function(done) {
+		expect(numbers.dataStore).to.deep.equal([]);
+		done();
+	});
+
+	it('should set a <key,value> pair in the Dictionary', function(done) {
+		numbers.set("Champu", 3370123459);
+		numbers.set("Zhampak", 123991283);
+		numbers.set("Raju", 7118780921);
+		expect(numbers.dataStore["Champu"]).to.equal(3370123459);
+		expect(numbers.dataStore["Zhampak"]).to.equal(123991283);
+		expect(numbers.dataStore["Raju"]).to.equal(7118780921);
+		done();
+	});
+
+	it('should get a value from the Dictionary', function(done) {
+		expect(numbers.get("Champu")).to.equal(3370123459);
+		expect(numbers.get("Zhampak")).to.equal(123991283);
+		expect(numbers.get("Raju")).to.equal(7118780921);
+		done();
+	});
+
+	it('should show all values from the Dictionary', function(done) {
+		expect(numbers.showAll()).to.equal("Champu -> 3370123459\nZhampak -> 123991283\nRaju -> 7118780921\n");
+		done();
+	});
+
+	it('should remove a value from the Dictionary', function(done) {
+		numbers.remove("Raju");
+		expect(numbers.get("Raju")).to.equal(undefined);
+		done();
+	});
+
+	describe('=> clear', function() {
+		it('should clear the Dictionary', function(done) {
+				numbers.clear();
+				expect(numbers.dataStore).to.deep.equal([]);
+				done();
+			});
+	});
+
+});