testng的功能很強大，利用@DataProvider可以做資料驅動，資料來源檔案可以是EXCEL，XML，YAML，甚至可以是TXT文字。在這以yaml為例：

備註：@DataProvider的返回值型別只能是Object[][]與Iterator<Object>[]

application.yaml:

user:
  name: xiaoqiang
  passwd: "1236454"
user1:
  name: xiaohong
  passwd: "1238309"
user2:
  name: rongrong
  passwd: "908344s"
user3:
  name: lisi
  passwd: "123566s"

解析yaml檔案，然後把解析出來的list轉換成Object[][]型別的資料，且結合在@DataProvider中。

YamlDataHelper.java檔案

import org.testng.annotations.DataProvider;
import org.yaml.snakeyaml.Yaml;

import java.io.FileInputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
 
import java.util.Map;

public class YamlDataHelper {

    private static List<Map<String, String>> getYamlList() {
        List<Map<String, String>> list = new ArrayList();
        Map<String, Map<String, String>> map = readYamlUtil();
        for (Map.Entry<String, Map<String, String>> me : map.entrySet()) {
            Map
 
<String, String> numNameMapValue = me.getValue();
            Map<String, String> tmp = new HashMap<>();
            for (Map.Entry<String, String> nameMapEntry : numNameMapValue.entrySet()) {
                String numKey = nameMapEntry.getKey();
                String nameValue = nameMapEntry.getValue();
                tmp.put(numKey, nameValue);
            }
            list.add(tmp);
        }
        return list;
    }

    public static Map<String, Map<String, String>> readYamlUtil() {
        Map<String, Map<String, String>> map = null;
        try {
            Yaml yaml = new Yaml();
            URL url = YamlDataHelper.class.getClassLoader().getResource("application.yaml");
            if (url != null) {
                //獲取yaml檔案中的配置資料，然後轉換為Map
                map = yaml.load(new FileInputStream(url.getFile()));
                return map;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return map;

    }

    @DataProvider
    public Object[][] yamlDataMethod() {
        List<Map<String, String>> yamlList = getYamlList();
        Object[][] files = new Object[yamlList.size()][];
        for (int i = 0; i < yamlList.size(); i++) {
            files[i] = new Object[]{yamlList.get(i)};
        }
        return files;
    }


}

再通過測試檔案來測試一下：

TestYamlData.java檔案：

import org.testng.annotations.Test;

import java.util.Map;

public class TestYamlData extends YamlDataHelper{

    @Test(dataProvider = "yamlDataMethod")
    public void testYamlData(Map<String,String> param){
        System.out.println(param.get("name")+"\t"+param.get("passwd"));
    }
}

執行結果如下：

[TestNG] Running:
  C:\Users\Administrator\.IntelliJIdea2018.2\system\temp-testng-customsuite.xml
xiaoqiang    1236454
xiaohong    1238309
rongrong    908344s
lisi    123566s

===============================================
Default Suite
Total tests run: 4, Failures: 0, Skips: 0
===============================================

Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8

Process finished with exit code 0