Unit test for checking the duplicity of quotes in data.json

[agarwalaman263]

The test case for checking duplicate quotes is added. It first cleans the data by replacing all the punctuations and removal of spaces and then checks the data for duplicates.
Currently at the time of PR, there are about 10 duplicates present, so the test case is failing.

Issue #120

[vinitshahdeo]

Please revert the changes in test.js in root directory. My bad, this file is wrongly named, actually, it should be demo.js.

Create a directory tests/ and add your test files there.

[vinitshahdeo]

describe blocks should match the thing you're testing. it blocks should match what behavior you're testing for. The assertions inside the it should describe how you're validation the behavior.

for this case:

describe("data.json", () => {
    it("should not contain any duplicate quotes", () => {

Now, it reads like a sentence. Later, if we add a few more tests it'll be more readable.

[vinitshahdeo]

@agarwalaman263 The CodeFactor checks are failing. Please check here.

[agarwalaman263]

I have committed the required changes

[agarwalaman263]

demo.js is created with the initial code and a new /tests/ directory is created for the test case files.

[vinitshahdeo]

@agarwalaman263 That's awesome. I'll review and merge it soon. You may find a few more issues here!