测试用例生成|集合1(随机数，数组和矩阵)

测试用例是任何“软件/项目测试过程”中极其重要的部分。因此，对于所有有抱负的软件开发人员来说，此套件将非常重要。以下是生成测试用例的程序。

产生随机数

C++

// A C++ Program to generate test cases for
// random number
#include
using namespace std;
  
// Define the number of runs for the test data
// generated
#define RUN 5
  
// Define the range of the test data generated
#define MAX 10000000
  
int main()
{
    // Uncomment the below line to store
    // the test data in a file
    // freopen("Test_Cases.in", "w", stdout);
  
    // For random values every time
    srand(time(NULL));
  
    for (int i=1; i<=RUN; i++)
        printf("%d\n", rand() % MAX);
  
    // Uncomment the below line to store
    // the test data in a file
    //fclose(stdout);
    return(0);
}

Java

// A Java Program to generate test cases 
// for random number
import java.io.*;
import java.util.Random;
  
class GeneratingRandomNumbers 
{
  
    // the number of runs 
    // for the test data generated
    static int requiredNumbers = 5;
  
    // miminum range of random numbers
    static int lowerBound = 0;
  
    // maximum range of random numbers
    static int upperBound = 1000;
  
    // Driver Code
    public static void main (String[] args) throws IOException 
    {
        Random random = new Random();
          
        for(int i = 0; i < requiredNumbers; i++)
        {
            int a = random.nextInt(upperBound - lowerBound) + 
                                                lowerBound;
            System.out.println(a);
        }
    }
}
  
// This code is contributed by Madfrost

Python3

# A Python3 Program to generate test cases
# for random number
import random
  
# the number of runs
# for the test data generated
requiredNumbers = 5;
  
# miminum range of random numbers
lowerBound = 0;
  
# maximum range of random numbers
upperBound = 1000;
  
# Driver Code
if __name__ == '__main__':
  
    for i in range(requiredNumbers):
        a = random.randrange(0, upperBound - 
                    lowerBound) + lowerBound;
        print(a);
  
# This code is contributed by 29AjayKumar

C#

// A C# Program to generate test cases 
// for random number
using System;
  
class GeneratingRandomNumbers 
{
  
    // the number of runs 
    // for the test data generated
    static int requiredNumbers = 5;
  
    // miminum range of random numbers
    static int lowerBound = 0;
  
    // maximum range of random numbers
    static int upperBound = 1000;
  
    // Driver Code
    public static void Main(String[] args)
    {
        Random random = new Random();
          
        for(int i = 0; i < requiredNumbers; i++)
        {
            int a = random.Next(upperBound - lowerBound) + 
                                                lowerBound;
            Console.WriteLine(a);
        }
    }
}
  
// This code is contributed by Rajput-Ji

生成随机数组

C++

// A C++ Program to generate test cases for
// array filled with random numbers
#include
using namespace std;
  
// Define the number of runs for the test data
// generated
#define RUN 5
  
// Define the range of the test data generated
#define MAX 10000000
  
// Define the maximum number of array elements
#define MAXNUM 100
  
int main()
{
    // Uncomment the below line to store
    // the test data in a file
    //freopen ("Test_Cases_Random_Array.in", "w", stdout);
  
    //For random values every time
    srand(time(NULL));
  
    for (int i=1; i<=RUN; i++)
    {
        // Number of array elements
        int NUM = 1 + rand() % MAXNUM;
  
        // First print the number of array elements
        printf("%d\n", NUM);
  
        // Then print the array elements separated 
        // by space
        for (int j=1; j<=NUM; j++)
            printf("%d ", rand() % MAX);
  
        printf("\n");
    }
  
    // Uncomment the below line to store
    // the test data in a file
    //fclose(stdout);
    return(0);
}

Java

// A Java Program to generate test cases 
// for array filled with random numbers
import java.io.*;
import java.util.Random;
  
class GeneratingRandomArrays
{
  
    // the number of runs 
    // for the test data generated
    static int RUN = 5;
  
    // miminum range of random numbers
    static int lowerBound = 0;
  
    // maximum range of random numbers
    static int upperBound = 1000;
  
    // miminum size of reqd array
    static int minSize = 10;
  
    // maximum size of reqd array
    static int maxSize = 20;
  
    // Driver Code
    public static void main (String[] args) throws IOException 
    {
        Random random = new Random();
  
        for(int i = 0; i < RUN; i++)
        {
            int size = random.nextInt(maxSize - minSize) + 
                                                minSize;
            int[] array = new int[size];
  
            System.out.println(size);
  
            for(int j = 0; j < size; j++)
            {
                int a = random.nextInt(upperBound - lowerBound) + 
                                                    lowerBound;
                System.out.print(a + " ");
            }
            System.out.println();
        }
    }
}
  
// This code is contributed by Madfrost

Python3

# A Python3 Program to generate test cases
# for array filled with random numbers
import random
  
# the number of runs
# for the test data generated
RUN = 5;
  
# miminum range of random numbers
lowerBound = 0;
  
# maximum range of random numbers
upperBound = 1000;
  
# miminum size of reqd array
minSize = 10;
  
# maximum size of reqd array
maxSize = 20;
  
# Driver Code
if __name__ == '__main__':
  
    for i in range(RUN):
        size = random.randrange(0, maxSize - minSize) + minSize;
        array = [0]*size;
  
        print(size);
  
        for j in range(size):
            a = random.randrange(0, upperBound - lowerBound) + lowerBound;
            print(a, end=" ");
  
        print();
  
  
# This code is contributed by 29AjayKumar

C＃

// A C# Program to generate test cases 
// for array filled with random numbers
using System;
  
class GeneratingRandomArrays
{
  
    // the number of runs 
    // for the test data generated
    static int RUN = 5;
  
    // miminum range of random numbers
    static int lowerBound = 0;
  
    // maximum range of random numbers
    static int upperBound = 1000;
  
    // miminum size of reqd array
    static int minSize = 10;
  
    // maximum size of reqd array
    static int maxSize = 20;
  
    // Driver Code
    public static void Main(String[] args)
    {
        Random random = new Random();
  
        for(int i = 0; i < RUN; i++)
        {
            int size = random.Next(maxSize - minSize) + 
                        minSize;
            int[] array = new int[size];
  
            Console.WriteLine(size);
  
            for(int j = 0; j < size; j++)
            {
                int a = random.Next(upperBound - lowerBound) + 
                        lowerBound;
                Console.Write(a + " ");
            }
            Console.WriteLine();
        }
    }
}
  
// This code is contributed by 29AjayKumar

生成随机矩阵

C++

// A C++ Program to generate test cases for
// matrix filled with random numbers
#include
using namespace std;
  
// Define the number of runs for the test data
// generated
#define RUN 3
  
// Define the range of the test data generated
#define MAX 100000
  
// Define the maximum rows in matrix
#define MAXROW 10
  
// Define the maximum columns in matrix
#define MAXCOL 10
  
int main()
{
    // Uncomment the below line to store
    // the test data in a file
    // freopen ("Test_Cases_Random_Matrix.in", "w", stdout);
  
    // For random values every time
    srand(time(NULL));
  
    for (int i=1; i<=RUN; i++)
    {
        // Number of rows and columns
        int row = 1 + rand() % MAXROW;
        int col = 1 + rand() % MAXCOL;
  
        // First print the number of rows and columns
        printf("%d %d\n", row, col);
  
        // Then print the matrix
        for (int j=1; j<=row; j++)
        {
            for (int k=1; k<=col; k++)
                printf("%d ", rand() % MAX);
            printf("\n");
        }
        printf("\n");
    }
  
    // Uncomment the below line to store
    // the test data in a file
    // fclose(stdout);
    return(0);
}

Java

// A Java Program to generate test cases for
// matrix filled with random numbers
import java.io.*;
import java.util.Random;
  
class GeneratingRandomMatrix 
{
    // the number of runs 
    // for the test data generated
    static int RUN = 5;
  
    // miminum range of random numbers
    static int lowerBound = 0;
  
    // maximum range of random numbers
    static int upperBound = 1000;
  
    // maximum size of colomn
    static int maxColomn = 10;
  
    // miminum size of colomn
    static int minColomn = 1;
  
    // minimum size of row
    static int minRow = 1;
  
    // maximum size of row
    static int maxRow = 10;
  
    // Driver Code
    public static void main (String[] args) throws IOException 
    {
        Random random = new Random();
  
        for(int i = 0; i < RUN; i++)
        {
            int row = random.nextInt(maxRow - minRow) + 
                                              minRow;
            int colomn = random.nextInt(maxColomn - minColomn) + 
                                                    minColomn;
  
            int[][] matrix = new int[row][colomn];
  
            System.out.println(row + " " + colomn);
  
            for(int j = 0; j < row; j++)
            {
                for(int k = 0; k < colomn; k++) 
                {
                    int a = random.nextInt(upperBound - lowerBound) + 
                                                        lowerBound;
                    System.out.print(a + " ");
                }
                System.out.println();
            }
            System.out.println();
        }
    }
}
  
// This code is contributed by Madfrost

C＃

// A C# Program to generate test cases for
// matrix filled with random numbers
using System;
  
public class GeneratingRandomMatrix 
{
    // the number of runs 
    // for the test data generated
    static int RUN = 5;
  
    // miminum range of random numbers
    static int lowerBound = 0;
  
    // maximum range of random numbers
    static int upperBound = 1000;
  
    // maximum size of colomn
    static int maxColomn = 10;
  
    // miminum size of colomn
    static int minColomn = 1;
  
    // minimum size of row
    static int minRow = 1;
  
    // maximum size of row
    static int maxRow = 10;
  
    // Driver Code
    public static void Main(String[] args)
    {
        Random random = new Random();
  
        for(int i = 0; i < RUN; i++)
        {
            int row = random.Next(maxRow - minRow) + 
                                            minRow;
            int colomn = random.Next(maxColomn - minColomn) + 
                                                    minColomn;
  
            int[,] matrix = new int[row, colomn];
  
            Console.WriteLine(row + " " + colomn);
  
            for(int j = 0; j < row; j++)
            {
                for(int k = 0; k < colomn; k++) 
                {
                    int a = random.Next(upperBound - lowerBound) + 
                                                        lowerBound;
                    Console.Write(a + " ");
                }
                Console.WriteLine();
            }
            Console.WriteLine();
        }
    }
}
  
// This code is contributed by 29AjayKumar

使用的库函数

1. rand()函数–
   ->生成从0到RAND_MAX范围内的随机数(32767)
   ->在 / 标头中定义
   ->如果我们要为变量var分配一个范围为– m到n [n> = m]的随机数，请使用-

   var = m +(rand()％(n – m + 1))；
   ->此函数是运行时函数。因此，必须在编译之前声明值– n，m，就像我们必须在编译之前声明数组的大小一样。
   ->每次要生成随机数时都调用此函数

2. time()函数
   ->从[00:00:00 UTC，1970年1月1日]返回秒数
   ->在标头中定义
3. 雪兰特(种子)
   ->根据传递给它的种子生成随机数。
   ->如果不使用此函数，而我们使用rand()函数，则每次运行程序时，都会生成相同的随机数。
   ->为了克服以上限制，我们将time(NULL)作为种子。因此，每次使程序运行时，srand(time(NULL))都会用于生成随机值。
   ->始终在程序开始时使用它，即-在int main(){之后
   ->每次生成随机数时都无需调用此函数
   ->在 / 标头中定义
4. freopen(“ output.txt”，“ w”，stdout)
   ->将所有数据写入(这就是我们将“ w”作为第二个参数传递的原因)到output.txt文件(该文件必须与程序所在的文件位于同一文件中)。
   ->用于将标准输出重定向到文件。
   ->如果未在之前创建output.txt文件，则将在与程序所在的文件相同的文件中创建该文件。
5. fclose(标准输出)
   ->关闭标准输出流文件以避免泄漏。
   ->始终在程序末尾使用它，即-在int main()函数return(0)之前。

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