TestNG参数化测试之Excel读取数据

1、新建Excel文档，准备好测试数据

在当前工程的resources目录下，新建文件名为testdata的Excel文档

打开Excel，将当前sheet重命名为calculator，构造num1、num2、result三个参数数据 

2、新建一个ExcelData类用来获取Excel中的数据

ExcelData类需要引入jxl.jar包，jxl.jar是专门处理excel中数据的，代码如下:

package com.mcj.testng;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;

public class ExcelData {
    public Workbook workbook;
    public Sheet sheet;
    public Cell cell;
    int rows;
    int columns;
    public String fileName;
    public String caseName;
    public ArrayList<String> arrkey = new ArrayList<String>();
    String sourceFile;

    /**
     * @param fileName   excel文件名
     * @param caseName   sheet名
     */
    public ExcelData(String fileName, String caseName) {
        super();
        this.fileName = fileName;
        this.caseName = caseName;
    }

    /**
     * 获得excel表中的数据
     */
    public Object[][] getExcelData() throws BiffException, IOException {

        workbook = Workbook.getWorkbook(new File(getPath()));
        sheet = workbook.getSheet(caseName);
        rows = sheet.getRows();
        columns = sheet.getColumns();
        // 为了返回值是Object[][],定义一个多行单列的二维数组
        HashMap<String, String>[][] arrmap = new HashMap[rows - 1][1];
        // 对数组中所有元素hashmap进行初始化
        if (rows > 1) {
            for (int i = 0; i < rows - 1; i++) {
                arrmap[i][0] = new HashMap<>();
            }
        } else {
            System.out.println("excel中没有数据");
        }

        // 获得首行的列名，作为hashmap的key值
        for (int c = 0; c < columns; c++) {
            String cellvalue = sheet.getCell(c, 0).getContents();
            arrkey.add(cellvalue);
        }
        // 遍历所有的单元格的值添加到hashmap中
        for (int r = 1; r < rows; r++) {
            for (int c = 0; c < columns; c++) {
                String cellvalue = sheet.getCell(c, r).getContents();
                arrmap[r - 1][0].put(arrkey.get(c), cellvalue);
            }
        }
        return arrmap;
    }

    /**
     * 获得excel文件的路径
     * @return
     * @throws IOException
     */
    public String getPath() throws IOException {
        File directory = new File(".");
        sourceFile = directory.getCanonicalPath() + "\\src\\resources\\"
                + fileName + ".xls";
        return sourceFile;
    }

}

3、创建TestNg测试类CalculatorExcel

package com.mcj.testng;
import java.io.IOException;
import java.util.HashMap;
import org.testng.Assert;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import jxl.read.biff.BiffException;

public class CalculatorExcel {

    Calculator cal=new Calculator();

    @DataProvider(name="num")
    public Object[][] Numbers() throws BiffException, IOException{
        ExcelData e=new ExcelData("testdata", "calculator");
        return e.getExcelData();
    }
    @Test(dataProvider="num")
    public void testAdd(HashMap<String, String> data){
        System.out.println(data.toString());
        float num1=Float.parseFloat(data.get("num1"));
        float num2=Float.parseFloat(data.get("num2"));
        float expectedResult=Float.parseFloat(data.get("result"));
        Float actual=cal.add(num1, num2);
        Assert.assertEquals(actual, expectedResult);
    }
}

4、运行结果

{result=10.4, num2=3.9, num1=6.5} 
{result=7, num2=2, num1=5} 
{result=15, num2=8, num1=7} 
{result=8.8, num2=3.3, num1=5.5} 
{result=-2, num2=3, num1=-5} 
{result=2.6, num2=-2, num1=4.6} 
{result=27, num2=23, num1=4} 
{result=37, num2=12, num1=25} 
PASSED: testAdd({result=10.4, num2=3.9, num1=6.5}) 
PASSED: testAdd({result=7, num2=2, num1=5}) 
PASSED: testAdd({result=15, num2=8, num1=7}) 
PASSED: testAdd({result=8.8, num2=3.3, num1=5.5}) 
PASSED: testAdd({result=-2, num2=3, num1=-5}) 
PASSED: testAdd({result=2.6, num2=-2, num1=4.6}) 
PASSED: testAdd({result=27, num2=23, num1=4}) 
PASSED: testAdd({result=37, num2=12, num1=25})

=============================================== 
Default test 
Tests run: 8, Failures: 0, Skips: 0