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We can find elements by multiple class names. If there is an element having more than one value separated by spaces set for the class attributes, it is called the compound class names.Let us see the HTML code of such web elements having compound class names −We shall get an exception if we use both the values - toc and chapters with the class name locator for the above scenario. Instead, the rule is to have only one class attribute value with the class name locator.SyntaxWebElement l = driver.findElement(By.className("toc")); //Invalid locator value with className locator WebElement l = driver.findElement(By.className("toc chapters"));Exampleimport ... Read More
We can prioritize tests in TestNG during execution. It must be noted that priority can only be set for test methods with @Test annotation. Lower the priority number set for a test method, higher the priority it gets during execution.Only integer value (positive, zero or negative) can be set as priority. A decimal number can also be set as priority, however it is required to be converted to integer value via typecasting.A test method cannot have multiple priority numbers. Also, the priority for a test method cannot be set from the TestNG XML file.Syntaxpublic class TestNG { @Test (priority ... Read More
We may encounter Cannot find class in classpath exception while executing tests in Selenium with TestNG framework. This can be caused because of the following reasons −In the TestNG XML, the class tag having the name attribute should not have the .java extension.In the TestNG XML, the class file is incorrect and hence unable to determine the classpath of the class.Errors within the project are present, and may require a clean project.In the TestNG XML, the class file name is incorrectThe below image shows an example of this error −Exampleimport org.testng.annotations.Test; public class TestNGP { @Test public void ... Read More
We can run multiple test cases using TestNG test suite in Selenium webdriver. To execute test cases simultaneously, we have to enable parallel execution in TestNG.A TestNG execution is driven by the TestNG xml file. To trigger parallel execution we have to use the attributes – parallel and thread-count. The attribute threadcount controls the number of threads to be triggered while executing the tests in a parallel mode. The values that can be set for parallel attributes are – tests, classes, instances and methods.Exampleimport org.testng.annotations.Test; public class TestNG15 { @Test public void tC1() { System.out.println("Test ... Read More
Cucumber dry run is used for compilation of the Step Definition and Feature files and to verify the compilation errors. The value of dry run can be either true or false. The default value of dry run is false and it is a part of the Test Runner Class file.In case the value of dry run is set to true, Cucumber will verify individual steps in the Feature file and the implementation code of steps in Feature file within the Step Definition file.A message is thrown, if any of the steps in the Feature file is not implemented in the ... Read More
ProblemJavaScript function that takes in a 2-D array, arr, as the first and the only argument.Each subarray of our input array is an array of exactly two numbers, specifying a time interval.Our function should remove all intervals that are covered by another interval in the array arr. Interval [a,b) is covered by interval [c,d) if and only if c (a === c ? d - b : a - c)); let last = arr[0]; let count = arr.length; for(let i = 1; i < arr.length; i++){ const [a, b] = last; const [c, d] = arr[i]; if(c >= a && d
ProblemJavaScript function that takes in an array of integers sorted in increasing order, arr.There is exactly one integer in the array that occurs more than one fourth times (25%) of the times, our function should return that number.For example, if the input to the function is −const arr = [3, 5, 5, 7, 7, 7, 7, 8, 9];Then the output should be −const output = 7;Example Live DemoThe code for this will be −const arr = [3, 5, 5, 7, 7, 7, 7, 8, 9]; const oneFourthElement = (arr = []) => { const len = arr.length / 4; const search = (left, right, target, direction = 'left') => { let index = -1 while (left
We get the ElementNotInteractableException in Selenium if an element is available in DOM but not in a condition to be interacted. Some of the reasons for this exception are −There may be a covering of another element on the element with which we want to interact with. This overspread of an element over the other can be temporary or permanent. To resolve a temporary overspread, we can wait for an expected condition for the element.We can wait for the expected condition of invisibilityOfElementLocated for the overlay element. Or, wait for the expected condition of elementToBeClickable for the element with which ... Read More
We may encounter the error - unable to locate element while working with Selenium webdriver. This leads to NoSuchElementException. This type of exception is thrown when there is no element on the page which matches with the locator value.If error is encountered, we can fix it by the following ways −Check if there is any syntax error in our xpath expression.Add additional expected wait conditions for the element.Use an alternative xpath expression.Exampleimport org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import org.openqa.selenium.support.ui.ExpectedConditions; import org.openqa.selenium.support.ui.WebDriverWait; public class XpathError{ public static void main(String[] args) { System.setProperty("webdriver.chrome.driver", ... Read More
Problem:We are required to write a JavaScript function that takes in the roots of two binary search trees, root1 and root2, as the first and the second argument respectively. The third argument to the function is number, target.Our function should return True if and only if there is a node in the first tree and a node in the second tree whose values sum up to a given integer target, false otherwise.For example, if the input to the function is −const target = 23;BSTsThen the output should be −const output = true;Output Explanation:Because there exists 6 in the first tree ... Read More