const StringBulder = require('./theCode');
const assert = require('chai').assert;

describe('StringBuilder',function(){
let str
        beforeEach(()=>{
                str = new StringBulder('test');
        })
    it('should be instantiated with a passed in string argument ',()=>{
            let actual = JSON.stringify(str);
            let expected = '{"_stringArray":["t","e","s","t"]}';
            assert.equal(actual,expected);
    })
    it('should be instantiated without anything',()=>{
            let temp = new StringBulder();
            let actual = JSON.stringify(temp);
            let expected = '{"_stringArray":[]}';
            assert.equal(actual,expected);
    });
    it('should converts the passed in string argument to an array and adds it to the end of the storage',()=>{
        str.append(', there');
        let actual = JSON.stringify(str);
        let expected = '{"_stringArray":["t","e","s","t",","," ","t","h","e","r","e"]}';
        assert.equal(actual,expected);
    });
    it('should converts the passed in string argument to an array and adds it to the beginning of the storage',()=>{
        str.prepend('User, ');
        let actual = JSON.stringify(str);
       let expected = '{"_stringArray":["U","s","e","r",","," ","t","e","s","t"]}';
       assert.equal(actual,expected);

    });
    it('should converts the passed in string argument to an array and adds it at the given index',()=>{
        str.insertAt('woop',5 );
        let actual = JSON.stringify(str);
        let expected = '{"_stringArray":["t","e","s","t","w","o","o","p"]}';
        assert.equal(actual,expected);
    });
    it('should removes elements from the storage, starting at the given index (inclusive)',()=>{
        str.remove(6, 3);
        let actual = JSON.stringify(str);
        let expected = '{"_stringArray":["t","e","s","t"]}';
        assert.equal(actual,expected);
    });
    it('should returns a string with all elements joined by an empty string ',()=>{
        str.append(', there');
        str.prepend('User, ');
        str.insertAt('woop',5 );
        str.remove(6, 3);
        let actual = str
        let expected = 'User,w test, there';
        assert.equal(actual.toString(),expected);
    });

});