Question

我有一个如下数据提供者：

@DataProvider(name = "therapistToDoList") public static Object[][] data(){
        return new Object[][]{
                {"06012017", "Low", "This is a low task description added via automation for therapist/admin."},
                {"06012017", "Medium", "This is medium task description added via automation for therapist/admin."},
                {"06012017", "High", "This is high task description added via automation for therapist/admin."},
        };
    }

如何使用此数据提供程序运行我的测试用例，但仅针对一个特定行而不是所有行？

使用testng dataprovider甚至可以实现吗？

Answer 1

如果您使用该工具，您应该坚持它遵循的意识形态。 DataProviders用于为每个数据行运行测试。

如果您需要一些不同的数据 - 那么创建一个不同的DataProvider。它可以调用初始值并从那里过滤值。甚至更好 - 可能有一个小的DataProvider，然后是一个较大的DataProvider，包含较小的值，并添加自己的行。

Answer 2

其中一种方法可能是 - 你保留一个计数器并检查你是否已达到目标数据，然后完成任务。

演示代码：

public class TestDemo {
        public static int count = 0;


        DataProvider(name = "therapistToDoList") public static Object[][] data(){
            return new Object[][]{
               {"06012017", "Low", "This is a low task description added via automation for therapist/admin."},
               {"06012017", "Medium", "This is medium task description added via automation for therapist/admin."},
               {"06012017", "High", "This is high task description added via automation for therapist/admin."},
            };
       }

       @Test(dataProvider = "therapistToDoList")
       public void testWithSpecificDataFromDataProvider(String a, String b, String c) {
           count++;
          if(count == 2){//let's say you are interest in 2nd data/row
          System.out.println(a + " " + b + " " + c);
          break;
          }
       }

}

Answer 3

这是一个工作示例，它通过JVM参数从TestNG套件xml文件（或）接受特定行作为选择，然后相应地过滤数据提供程序的行。

public class FilteredDataProviderExample {

    @Test (dataProvider = "therapistToDoList")
    public void testWithSpecificDataFromDataProvider(String a, String b, String c) {
        Assert.assertNotNull(a);
        Assert.assertNotNull(b);
        Assert.assertNotNull(c);
    }

    @DataProvider (name = "therapistToDoList")
    public static Object[][] data(ITestContext ctx) {
        Object[][] data = new Object[][] {
            {"06012017", "Low", "This is a low task description added via automation for therapist/admin."},
            {"06012017", "Medium", "This is medium task description added via automation for therapist/admin."},
            {"06012017", "High", "This is high task description added via automation for therapist/admin."},
        };
        return filterData(data, ctx.getCurrentXmlTest());
    }

    private static Object[][] filterData(Object[][] data, XmlTest xmlTest) {
        //What if the value was given as a JVM argument.
        int rowFromJVM = Integer.parseInt(System.getProperty("row", "-1"));
        if (rowFromJVM > 0 && rowFromJVM < data.length) {
            return new Object[][] {
                data[rowFromJVM]
            };
        }
        int row = - 1;
        //Lets check if there was any filtering defined either at the <test> level or at the
        //<suite> level.
        if (xmlTest.getAllParameters().containsKey("row")) {
            row = Integer.parseInt(xmlTest.getParameter("row"));
        }
        if (row > 0 && row < data.length) {
            return new Object[][] {
                data[row]
            };
        }
        return data;
    }
}

如何从testng数据提供者中检索特定的数据行？

3 个答案: