There is a game that realizes guessing numbers. There are four grids in the game, each with a number from 0 to 9, and the numbers for any two grids are different. You have 6 chances to guess. If you guess right, then you win; otherwise, you fail. Each time when you guess, you need to input 4 numbers in sequence. The program will give you feedback of xAxB according to the guessing situation. The number before A represents the number of correct position and number, and the number before B represents the number of correct number but wrong position.

For example: the answer is 1 2 3 4, then there are the following outputs based on different inputs

Example：

The answer is 1 2 3 4, then there are the following outputs based on different inputs

Input　　    Output             Instruction
1 5 6 7      1A0B                 1 correct
2 4 7 8      0A2B                 2 and 4 wrong position 
0 3 2 4      1A2B                 4 correct，2 and 3 wrong position
5 6 7 8      0A0B                 all wrong
4 3 2 1      0A4B                 4 numbers position wrong
1 2 3 4      4A0B                 win, all correct
1 1 2 3    Wrong Input，Input again
1 2        Wrong Input，Input again

The answer is randomly generated at the beginning of the game. There are only 6 chances for input. Each time when you guess, the program should give the results of the current guess, as well as all previously guessed numbers and results for the player's reference. The input interface is Console (console) to avoid too many interface codes that are not related to the problem. When inputting, separate the numbers with spaces.

• ** Design and write test cases after clearly understanding the requirements**
• ** Complete tests in the existing test file and ensure that the test coverage of the test category of this test file is 100%**
• Unit testing should cover all core business logic
• Make unit test refactoring with small steps
• Denominate meaningful names for unit tests and methods
• ** Submit code in small steps with a comment on meaning **

• Java 8
• Intellj IDEA

• You can fork the following github repository as starting point
• Run Main.java file under the src/main catalogue of project
  • If Guess Number Game, You have 6 chances to guess! appears, then it means the project initialization is successful
• Complete unit test on corresponding file under the src/test catalogue of project

• Implement ./gradlew clean test under root catalogue and view test result

• You should implement the test code and push your repo to github repo named unit-test-comprehensive.
• Commit your repostory link to complete this Question.