Different Attributes in TestNG

1. priority attribute :

In TestNG "Priority" is used to schedule the test cases. When there are multiple test cases, we want to execute test cases in order. Like First we need to execute a test case "Registration" before login.
In order to achive, we use need to add annotation as @Test(priority=??). The default value will be zero for priority.
If you don't mention the priority, it will take all the test cases as "priority=0" and execute
alphabetically.
Lower priorities will be scheduled first.
For example if you give the priority like @Test(priority=0), @Test(priority=-1), @Test(priority=1), @Test(priority=2)
Then test will be executed in following order: @Test(priority=-1), @Test(priority=0), @Test(priority=1), @Test(priority=2)

2. description attribute: gives information about the test it is attached to.
Example: 
@Test(description='Title Test')
public void titleTest(){
   String actualTitle = driver.getTitle();
   String expectedTitle = "OrangeHRM";
   Assert.assertEquals(actualTitle, expectedTitle);
}

3. timeOut: maximum number of milliseconds for a test run.
Example: 5000 milliseconds (5 seconds) time allotted to run below test method.
@Test(timeOut=5000)
public void testCase(){

}
4. dependsOnMethods: specify when you want to run a test, only after another test has run successfully, making the second test’s run dependent on the first test’s successful outcome.
Example:
@Test(priority = 1)
 public void testcase3() {
  String actualUrl = driver.getCurrentUrl();
  String expectedURL = "https://opensource-demo.orangehrmlive.com/index.php/dashboard";
  Assert.assertEquals(actualUrl, expectedURL);
}
@Test(priority = 2, dependsOnMethods = "testcase3")
  public void testcase4() {
  String actualTitle = driver.getTitle();
  String expectedTitle = "OrangeHRM";
  Assert.assertEquals(actualTitle, expectedTitle);
}
5. enabled: this attribute has boolean values, and by default is ‘true’. Only worth specifying explicitly when you don’t want a certain test method or class to be run, by setting the attribute to false.
Example: Below test case will not be executed as specified enabled = false.
@Test(enabled = false)
  public void testcase4() {
  String actualTitle = driver.getTitle();
  String expectedTitle = "OrangeHRM";
  Assert.assertEquals(actualTitle, expectedTitle);
}
6. groups: useful for grouping together tests that relate to the same functionality, are of the same importance or are of the same type.

7. alwaysRun- If set to true, this test method will always be run even if it depends on a method that failed.
Example: Below testcase4 will always execute even it depends on a method that fails (testcase3)

@Test(priority = 1)
 public void testcase3() {
  String actualUrl = driver.getCurrentUrl();
  String expectedURL = "https://opensource-demo.orangehrmlive.com/index.php/dashboard";
  Assert.assertEquals(actualUrl, expectedURL);
}

@Test(priority = 2, dependsOnMethods = "testcase3", alwaysRun = true)
  public void testcase4() {
  String actualTitle = driver.getTitle();
  String expectedTitle = "OrangeHRM";
  Assert.assertEquals(actualTitle, expectedTitle);
}
8. invocationcount - The number of times this method should be invoked.
Example: Below testcase3 will execute 3 times.
@Test(priority = 4, description = "Verify URL", invocationCount = 3)
  public void testcase3() {
  String actualUrl = driver.getCurrentUrl();
  String expectedURL = "https://opensource-demo.orangehrmlive.com/index.php/dashboard";
  Assert.assertEquals(actualUrl, expectedURL);
}

9. How to ignore test case - We can ignore test at test, method and package levels
Example:
1. Test Level - Below test method will be ignored as @Ignore specified at Test Level
@Ignore
@Test(priority = 4, description = "Verify URL", invocationCount = 3)
  public void testcase3() {
  String actualUrl = driver.getCurrentUrl();
  String expectedURL = "https://opensource-demo.orangehrmlive.com/index.php/dashboard";
  Assert.assertEquals(actualUrl, expectedURL);
}

2. Class Level - All test methods will be ignored for this classe as @Ignore specified at class Level

@Ignore
public class OrangeHRMTest1 {
WebDriver driver;

  @Test(priority = 1)
  public void testcase1() {
  driver.get("https://opensource-demo.orangehrmlive.com/index.php/auth/login");
  boolean img = driver.findElement(By.xpath("//*[@id=\"divLogo\"]/img")).isDisplayed();
  Assert.assertTrue(img);
}

  @Test(priority = 2)
  public void testcase2() {
  String actualTitle = driver.getTitle();
  String expectedTitle = "OrangeHRM";
  Assert.assertEquals(actualTitle, expectedTitle);
}

}

3. Package Level - All test classes will be ignored under this package
Example
@org.testng.annotations.Ignore
package testNGPackage;

10. @Test annotation at Class Level - TestNG has great feature to define annotations on a class instead of a each test method.
If say suppose there are 10 test methods, where adding @Test on a class level is simpler than adding @Test for each method.
When we make class level @Test annotation, all the public methods of this class will become test methods even if they are not annotated.
We can still define @Test annotation on of the method if we want to add any attributes to particular test method.

Example:

@Test
public class OrangeHRMTest {
WebDriver driver;

@BeforeClass
public void setup() {
System.setProperty("webdriver.chrome.driver",
"C:\\Users\\Hitendra\\Downloads\\chromedriver_win32\\chromedriver.exe");
driver = new ChromeDriver();
driver.manage().window().maximize();
}
public void testCase1(priority=1) {
}
public void testCase2(priority=2) {
}
}
Please watch below youtube video to get more details:

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