public/tests/go/solutions/game23/game23_test.go

package main

import (
	"testing"

	"github.com/01-edu/z01"

	solutions "../../solutions" // This line is not necessary when testing an exercise with a program
)

func nd(a, b int) int {
	if a > b {
		return -1
	}
	if a == b {
		// fmt.Printf("%d\n", cnt)
		return 0
	}
	if nd(a*2, b) != -1 {
		return 1 + nd(a*2, b)
	}
	if nd(a*3, b) != -1 {
		return 1 + nd(a*3, b)
	}
	return -1
}

func TestGame23(t *testing.T) {
	// Declaration of the node that is going to take the group of arguments that are going to
	// inputed during each iteration of a Challenge between the student and the staff solution.
	// (note: a node is not always necessary but in this case it makes the writing of the test easier)

	type node struct {
		init int
		fin  int
	}

	// Declaration of  an empty array of type node{}
	// note that in this case this is the easiest type of table to declare
	// but a table can be of any other relevant type, (for example []string{}, []int{} if it
	// were a single string tested or a single int)

	table := []node{}
	// Initial filling of that array with the values I see in the examples of the subject

	table = append(table,
		node{50, 43},
		node{13, 13},
		node{10, 9},
		node{5, 9},
	)

	// If we were to leave the table as it is, a student could just do a program with 4 ifs and get
	// "around" the goal of the exercise. We are now going to add 15 random tests using the z01 testing library

	for i := 0; i < 20; i++ {
		value := node{
			init: z01.RandIntBetween(1, 1000),
			fin:  z01.RandIntBetween(1, 1000),
			//this z01.RandIntBetween function allows the randomization of
			//the int for each value in a desired range.
			//Note that they are many others of those functions for other types of data
			//Do not hesitate to have a look at all of them https://github.com/01-edu/z01
		}

		//Once the random node created, this iteration is added to the earlier declared table
		//along with the 4 specific examples taken from the examples of the readme.
		table = append(table, value)
	}

	for i := 1; i < 100; i++ {
		value := node{
			init: 1,
			fin:  1,
		}
		if nd(1, i) > 0 {
			value = node{
				init: 1,
				fin:  i,
			}
			//this z01.RandIntBetween function allows the randomization of
			//the int for each value in a desired range.
			//Note that they are many others of those functions for other types of data
			//Do not hesitate to have a look at all of them https://github.com/01-edu/z01
		}

		//Once the random node created, this iteration is added to the earlier declared table
		//along with the 4 specific examples taken from the examples of the readme.
		table = append(table, value)
	}

	//The table with 4 specific exercises and 15 randoms is now ready to be "challenged"
	//Because the exercise asks for a function we are now using the Challenge function (this function would
	// be the ChallengeMainExam function)

	for _, arg := range table {
		z01.Challenge(t, Game23, solutions.Game23, arg.init, arg.fin)
	}

	// the z01.Challenge function is here applied to each argument of the table. It musts contains:
	// 1) first, the t argument from the T structure imported from the package "testing"
	//
	// 2) second, the function from the student, in this case Nauuo
	//(this disapears in the ChallengeMainExam function)
	// 3) third, the function from the staff, in this case solutions.Nauuo
	//(this disapears as well in the ChallengeMainExam function)
	// 4) all the arguments to be tested, in this case it is the plus, minus and rand from each structure,
	// notice that they are accessed with arg. (the arg notation comes from the way it was name in the
	// range loop over the table)

	// Now that this is done. re-read the quickReadme (the test your test recap) and apply all the commands
	// and intructions. We strongly advise to check that your error messages matches your subject.
	// and that you ask a colleague to double check.

	//FINAL STEP:
	// When both are satisfied with the coherence between the subject and its tests. The code can be commited
	// and redeployed by the team-01.
	// We then advised the staff team to test the new exercise invidually with their current build of the exam
}