如何根据内部逻辑多次运行testNGtesting？

我已经通过一些解决scheme来讲述TestNg DataProvider和InvocationCount ，但是DataProvider或InvocationCount甚至在我的@Test方法启动之前就已经出现了。 我的要求是，我有一个DataReader类，它以键值对的forms从Excel文件中读取数据（键总是在第一行，并且可以有多于一行的值）。 假设如果有2行的值可用，那么我将不得不与另一组数据运行相同的@Test （如果我可以为@Test的每次迭代运行@BeforeClass和@AfterClass方法将是很好的）。

像这样的东西：

@BeforeClass //Some Code Here that runs on each iteration of @Test @Test public void myTest() { // make a decision here, based on number of rows of values, run the test multiple times DataReader.LoadDataSheet("TestData.xlsx", "SheetName"); } @AfterClass //Some Code Here that runs on each iteration of @Test 

Answer 1

您需要的是工厂供电的数据提供者。

与工厂方法绑定的第一个数据提供者将为每个实例提供将被testing方法使用的数据，以根据需要多次迭代。 由外部数据提供者首先提供的数据将被数据提供者使用，数据提供者将成为每个实例的一部分，这将按照需要多次迭代testing。

下面的例子应该能够澄清这一点。

 import org.assertj.core.api.Assertions; import org.testng.ITestResult; import org.testng.annotations.AfterMethod; import org.testng.annotations.BeforeMethod; import org.testng.annotations.DataProvider; import org.testng.annotations.Factory; import org.testng.annotations.Test; import java.util.Arrays; import java.util.Collections; import java.util.List; public class TestClassSample { private List<String> data; @Factory(dataProvider = "getDataForInstances") public TestClassSample(List<String> data) { this.data = data; } @BeforeMethod public void beforeMethod(Object[] parameters) { System.err.println("Printing Parameters before running test method " + Arrays.toString(parameters)); } @Test(dataProvider = "getData") public void testMethod(String text) { System.err.println("Printing Parameters when running test method [" + text + "]"); Assertions.assertThat(text).isNotEmpty(); } @AfterMethod public void afterMethod(ITestResult result) { System.err.println("Printing Parameters after running test method " + Arrays.toString(result.getParameters())); } @DataProvider(name = "getData") public Object[][] getData() { //This data provider simulates the iterations that every test method has to go through based on //the outer data provider viz., "getDataForInstances()" Object[][] iterationData = new Object[data.size()][1]; for (int i = 0; i < data.size(); i++) { iterationData[i] = new String[]{data.get(i)}; } return iterationData; } @DataProvider(name = "getDataForInstances") public static Object[][] getDataForInstances() { //This data provider simulates data being read from excel, wherein it would return the number of //iterations that every test method should go through. return new Object[][]{ {Collections.singletonList("Java")}, {Arrays.asList("TestNG", "JUnit")}, {Arrays.asList("Maven", "Gradle", "Ant")} }; } } 

这是输出：

 Printing Parameters before running test method [Maven] Printing Parameters when running test method [Maven] Printing Parameters after running test method [Maven] Printing Parameters before running test method [Gradle] Printing Parameters when running test method [Gradle] Printing Parameters after running test method [Gradle] Printing Parameters before running test method [Ant] Printing Parameters when running test method [Ant] Printing Parameters after running test method [Ant] Printing Parameters before running test method [TestNG] Printing Parameters when running test method [TestNG] Printing Parameters after running test method [TestNG] Printing Parameters before running test method [JUnit] Printing Parameters when running test method [JUnit] Printing Parameters after running test method [JUnit] Printing Parameters before running test method [Java] Printing Parameters when running test method [Java] Printing Parameters after running test method [Java] =============================================== Default Suite Total tests run: 6, Failures: 0, Skips: 0 =============================================== 

Answer 2

我不是一个奇特的编码器，但这是我想要的。

testing类：

 import org.testng.annotations.DataProvider; import org.testng.annotations.Test; public class Test2 extends BaseTset { @Test(dataProvider = "dataprovider") public void test(DataReader2 reader) { for (int i = 1; i <= 10; i++) { System.out.println("Test : " + reader.getValue("Key_" + i)); } } @DataProvider(name = "dataprovider") public DataReader2[] dataProvider() { String dataFileName = "TestData.xlsx"; DataReader2 reader = new DataReader2(dataFileName); int rowCount = reader.getRowCount(); DataReader2[] reader2 = new DataReader2[rowCount]; for (int i = 0; i < rowCount; i++) { int j = i + 1; reader2[i] = DataReader2.getReader(dataFileName, j); } return reader2; } } 

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数据读取器2类：

 import java.io.FileInputStream; import java.io.IOException; import java.util.HashMap; import java.util.Map; import org.apache.poi.ss.usermodel.DataFormatter; import org.apache.poi.ss.usermodel.FormulaEvaluator; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class DataReader2 { private Map<String, String> dataSet = new HashMap<String, String>(); private XSSFWorkbook ExcelWBook; private XSSFSheet ExcelWSheet; private FormulaEvaluator Evaluator; private XSSFCell Cell; private XSSFRow Row; private int rowCount; private int columnCount; public DataReader2(String FileName, int rowNum) { loadDataFile(FileName); dataSet = getDataSet(rowNum); } public DataReader2(String FileName) { loadDataFile(FileName); } public static DataReader2 getReader(String FileName, int rowNum) { DataReader2 dataReader = new DataReader2(FileName, rowNum); return dataReader; } private void loadDataFile(String FileName) { try { String FilePath = "./data/" + FileName; FileInputStream ExcelFile = new FileInputStream(FilePath); ExcelWBook = new XSSFWorkbook(ExcelFile); Evaluator = ExcelWBook.getCreationHelper().createFormulaEvaluator(); ExcelWSheet = ExcelWBook.getSheetAt(0); } catch (IOException e) { e.printStackTrace(); } } public int getRowCount() { rowCount = ExcelWSheet.getLastRowNum(); return rowCount; } private Map<String, String> getDataSet(int rowNum) { DataFormatter formatter = new DataFormatter(); Row = ExcelWSheet.getRow(rowNum); columnCount = Row.getLastCellNum(); for (int i = 0; i < columnCount; i++) { Cell = ExcelWSheet.getRow(0).getCell(i); String key = formatter.formatCellValue(Cell, Evaluator); Cell = Row.getCell(i); String value = formatter.formatCellValue(Cell, Evaluator); dataSet.put(key, value); } return dataSet; } public String getValue(String key) { try { key = key.trim(); String value = dataSet.get(key).trim(); if (!value.isEmpty() && !value.equals(null)) { return value; } else { throw (new Exception("No key with name : " + key + " available in datasheet.")); } } catch (Exception e) { e.printStackTrace(); return ""; } } } 

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基础testing类：

 import org.testng.annotations.AfterClass; import org.testng.annotations.AfterMethod; import org.testng.annotations.BeforeClass; import org.testng.annotations.BeforeMethod; public class BaseTset { @BeforeClass public void beforeClass() { System.out.println("Before class"); } @BeforeMethod public void beforeMethod() { System.out.println("Before method"); } @AfterMethod public void AfterMethod() { System.out.println("After method"); } @AfterClass public void afterClass() { System.out.println("After Class"); } } 

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输出：

 [RemoteTestNG] detected TestNG version 6.12.0 Before class Before method Test : Value_1 Test : Value_2 Test : Value_3 Test : Value_4 Test : Value_5 Test : Value_6 Test : Value_7 Test : Value_8 Test : Value_9 Test : Value_10 After method Before method Test : Value_11 Test : Value_12 Test : Value_13 Test : Value_14 Test : Value_15 Test : Value_16 Test : Value_17 Test : Value_18 Test : Value_19 Test : Value_20 After method Before method Test : Value_21 Test : Value_22 Test : Value_23 Test : Value_24 Test : Value_25 Test : Value_26 Test : Value_27 Test : Value_28 Test : Value_29 Test : Value_30 After method Before method Test : Value_31 Test : Value_32 Test : Value_33 Test : Value_34 Test : Value_35 Test : Value_36 Test : Value_37 Test : Value_38 Test : Value_39 Test : Value_40 After method After Class PASSED: test(datareader.DataReader2@186beff) PASSED: test(datareader.DataReader2@78afa0) PASSED: test(datareader.DataReader2@1c2959f) PASSED: test(datareader.DataReader2@19982de) =============================================== Default test Tests run: 4, Failures: 0, Skips: 0 =============================================== =============================================== Default suite Total tests run: 4, Failures: 0, Skips: 0 ===============================================