01
How do you take a screenshot on failure in TestNG?
Show answer
Implement ITestListener.onTestFailure():
File src = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
then copy it into the reports folder.
Chargebee Automation Testing Interview Questions & Answers
Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.
About Chargebee hiring for Automation Testing roles
Chargebee is a subscription billing and revenue management software company founded in Chennai. Its platform helps SaaS and subscription businesses manage recurring billing, invoicing, payments, revenue recognition and retention. It has major engineering and operations teams in India and hires software engineers, quality engineers, product managers, solutions consultants and customer support roles.
For Automation Testing roles, this Chargebee practice set focuses most on Page Object Model (5), Selenium WebDriver (5), Cucumber and BDD (5), TestNG Framework (4). It has 1 easy, 31 medium, 8 hard questions, so you can start easy and work up to the harder ones.
- Company type
- Product
- Headquarters
- San Francisco, USA
- Main India offices
- Chennai, Bengaluru
Chargebee Automation Testing interview process
- Online coding assessment
- Technical round 1 (DSA)
- Technical round 2 (design or practical coding)
- Hiring manager and culture round
Typical pattern based on public candidate experiences. Rounds vary by role, team and year.
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02
How do you manage test data in a framework?
Show answer
Use external files or APIs and database setup scripts, generate unique data per run, and clean up afterwards so tests stay independent.
03
An element is visible in Appium Inspector but your test throws NoSuchElementException on the device. What do you check?
Show answer
First check timing: the screen may still be loading, so add an explicit wait for presence. Then check context: in a hybrid app the element may be in a webview while you are in NATIVE_APP. Confirm the locator matches exactly, including package prefix in resource-id. The element may be off screen in a list, so scroll first. Also check that the Inspector session used the same app build, language and device size as the test.
04
How do you calculate automation ROI?
Show answer
Compare effort saved by running automated tests repeatedly against the cost of building and maintaining scripts, counting execution time, defects found earlier and release speed.
05
How do you undo a commit that has already been pushed?
Show answer
Use git revert <commit>, which creates a new commit that reverses the changes and keeps history intact, safe for shared branches. git reset moves the branch pointer backwards and is fine for local commits, but resetting and force-pushing a shared branch rewrites history and breaks teammates' clones. If force push is truly needed, use --force-with-lease and tell the team.
06
What are the Actions class use cases?
Show answer
Mouse and keyboard actions such as hover, drag and drop, double click, right click and key combinations, built with moveToElement(...).perform().
07
What is method chaining in Page Object Model?
Show answer
Method chaining means page methods return a page object, either this or the next page, so calls can be linked: loginPage.enterUser("asha").enterPassword("x").submit().openOrders(). Returning the next page models navigation and makes tests read like a user journey. Be careful when an action can lead to different pages; return the correct type or provide separate methods for success and failure.
08
What is a DataProvider in TestNG?
Show answer
@DataProvider returns Object[][]; a @Test(dataProvider = "name") method runs once per row — the basis of data-driven tests, often reading Excel or JSON.
09
How do you run tests on multiple browsers in parallel in Jenkins?
Show answer
Use a parallel block in the pipeline with a stage per browser, or a matrix directive with axis BROWSER values chrome, firefox and edge. Each branch runs mvn test -Dbrowser=${BROWSER}, ideally against Selenium Grid or containers so agents do not need local browsers. Publish results per branch with clear names so failures show which browser broke.
10
How do you rerun only failed Cucumber scenarios?
Show answer
Add the rerun plugin, for example rerun:target/failed.txt, to the main runner. It writes the location of each failed scenario. Create a second runner whose features point to @target/failed.txt and run it after the main run in Maven or Jenkins. Use reruns to separate real failures from flaky ones, but track flaky scenarios and fix them instead of hiding them.
11
A click works locally but throws ElementClickInterceptedException in CI. How do you fix it?
Show answer
Another element, such as a cookie banner, loader overlay or sticky header, covers the target. In CI the window is often smaller, so the layout differs. Set a fixed window size, wait for the overlay to disappear with invisibilityOfElementLocated, close banners in setup and scroll the element into view. Use a JavaScript click only as a last resort, since it bypasses real user behaviour.
12
Chrome inside a Docker node keeps crashing with session deleted because of page crash. How do you fix it?
Show answer
This is almost always shared memory exhaustion, because Docker's default /dev/shm of 64 MB is too small for Chrome. Set shm_size: 2gb in Compose or --shm-size=2g in docker run. Also check the container's memory limit and the number of sessions per node, since several browsers in one container multiply memory use. Heavy pages or memory leaks in long sessions can also crash tabs, so restart sessions between test classes.
13
Tell me about a time a performance test found a serious issue before release.
Show answer
Situation: a new search feature passed functional testing. Task: run a load test at expected peak traffic. Action: at 150 users the 95th percentile jumped from under one second to nine seconds. I correlated it with database metrics, found a full table scan caused by a missing index and shared the query and graphs with developers. Result: after the fix, response time stayed under 800 milliseconds at 400 users, and release went ahead on time.
14
How do you integrate Selenium tests with Jenkins?
Show answer
Create a job or pipeline that checks out code, runs mvn test, publishes reports and triggers on commits or schedules.
15
How do you switch between native and webview contexts in a hybrid app?
Show answer
// Requires the webview to be debuggable in the app build
Set<String> contexts = driver.getContextHandles();
for (String ctx : contexts) {
if (ctx.startsWith("WEBVIEW")) {
driver.context(ctx);
break;
}
}
driver.findElement(By.cssSelector("#email")).sendKeys("qa@test.com");
// back to native controls
driver.context("NATIVE_APP");
16
Tests pass locally but fail on Jenkins. Why?
Show answer
Headless mode or screen resolution, timing issues, environment data, missing dependencies, browser–driver version mismatch or parallel conflicts. Check logs and failure screenshots and make waits robust.
17
Write a step definition that reads a DataTable as a list of maps.
Show answer
// Given the following users exist
@Given("the following users exist")
public void usersExist(DataTable table) {
List<Map<String, String>> rows = table.asMaps();
for (Map<String, String> row : rows) {
userApi.create(row.get("name"), row.get("role"));
}
}
18
How do you upload a file with REST Assured?
Show answer
Use multipart: given().multiPart("file", new File("src/test/resources/report.pdf"), "application/pdf").formParam("type", "invoice").when().post("/upload").then().statusCode(200). REST Assured sets the multipart/form-data content type automatically. Verify both the status and the response, such as the returned file id or size, and test edge cases like empty, oversized and wrong-type files.
19
How do you run JavaScript in Selenium?
Show answer
Cast the driver to JavascriptExecutor and use executeScript, for example to scroll into view or click hidden elements.
20
How do you pass authentication in an API test?
Show answer
Use headers such as Bearer tokens, basic auth, API keys or OAuth flows; fetch a token in a setup step and reuse it.
21
How would you automate a login flow with multiple user roles?
Show answer
Keep credentials in external data, parameterise the test with a data provider, reuse a login method in a page class, and clear sessions between roles.
22
Should assertions be written inside page objects?
Show answer
Generally no. Page objects should expose state and actions, such as getErrorMessage() or isLoggedIn(), and tests should make the assertions. This keeps page classes reusable across positive and negative tests and keeps the test intent visible. A small exception is a simple check that the correct page has loaded, often done in the constructor or an isAt() method.
23
Business stakeholders never read your feature files. Is BDD still worth it?
Show answer
Partly. Readable scenarios still help testers and developers, but if nobody discusses examples before coding, Cucumber is only an extra layer over normal tests. I would first try to restart three-amigos sessions for complex stories. If the business truly will not engage, I would keep Gherkin only for key business flows and write lower-level tests in plain TestNG to reduce maintenance.
24
Write a REST Assured test that deserializes a response into a POJO.
Show answer
@Test
public void getUserAsPojo() {
User user = given()
.pathParam("id", 2)
.when()
.get("/users/{id}")
.then()
.statusCode(200)
.extract().as(User.class);
Assert.assertEquals(user.getId(), 2);
Assert.assertNotNull(user.getEmail());
}
25
Write a docker-compose.yml that runs a Selenium hub with Chrome and Firefox nodes.
Show answer
services:
selenium-hub:
image: selenium/hub:4.25.0
ports:
- "4442:4442"
- "4443:4443"
- "4444:4444"
chrome:
image: selenium/node-chrome:4.25.0
shm_size: 2gb
depends_on:
- selenium-hub
environment:
- SE_EVENT_BUS_HOST=selenium-hub
- SE_EVENT_BUS_PUBLISH_PORT=4442
- SE_EVENT_BUS_SUBSCRIBE_PORT=4443
firefox:
image: selenium/node-firefox:4.25.0
shm_size: 2gb
depends_on:
- selenium-hub
environment:
- SE_EVENT_BUS_HOST=selenium-hub
- SE_EVENT_BUS_PUBLISH_PORT=4442
- SE_EVENT_BUS_SUBSCRIBE_PORT=4443
26
What are Cucumber Expressions and how do they differ from regular expressions?
Show answer
Cucumber Expressions are the default, simpler way to match steps, using parameter types like {int}, {string}, {word} and {float}. For example "I add {int} items" captures a number and converts it to an Integer automatically. Regular expressions are still supported and offer more control, but are harder to read. Teams usually prefer Cucumber Expressions and define custom parameter types for domain values.
27
Your test framework leaks memory during long runs and Jenkins agents crash. How do you investigate?
Show answer
Check whether drivers are always quit, ThreadLocal values are removed, and static lists or maps keep growing, such as collecting screenshots or response objects. Enable heap dumps with -XX:+HeapDumpOnOutOfMemoryError and analyse with a tool like VisualVM or Eclipse MAT to see which objects hold memory. Fix the leak and tune Surefire's forked JVM memory with argLine if needed.
28
A third-party payment API is slow and makes your tests time out in CI. What do you do?
Show answer
Separate concerns: for most functional tests, stub the payment API with WireMock returning success, failure and timeout responses, so tests are fast and deterministic. Keep a small set of integration tests against the sandbox, with longer timeouts and retries for network errors, run on a schedule. Report sandbox slowness separately so it does not block every pull request.
29
What is the LoadableComponent pattern in Selenium?
Show answer
LoadableComponent is a Selenium support class that standardises how a page object ensures it is loaded. You extend it and implement load(), which navigates to the page, and isLoaded(), which throws an Error if the page is not ready. Calling get() checks isLoaded and calls load only if needed, then checks again. It gives a consistent, self-verifying way to open pages and fails fast with a clear message.
30
Difference between absolute and relative XPath?
Show answer
Absolute starts from the root (/html/...) and breaks easily; relative starts anywhere with // and is more stable, for example //input[@id='email'].
31
How do you run the same test with data from Excel using a DataProvider?
Show answer
Write a utility that reads the sheet with Apache POI and returns Object[][] with one row per test case. Create a @DataProvider method that calls the utility, and set dataProvider = "loginData" on the test. Each row runs as a separate test with its own result. Keep the file in src/test/resources and consider CSV or JSON, which are easier to review in Git.
32
How do you handle environment-specific configuration?
Show answer
Keep URLs and credentials in per-environment config files or variables, choose with a command-line parameter and never hard-code secrets.
33
Difference between ArrayList and LinkedList?
Show answer
ArrayList has fast random access and slower inserts in the middle; LinkedList has fast inserts and deletes but slow access by index.
34
How do you test an API that depends on another service that is down?
Show answer
Use mocks or stubs such as WireMock to simulate the dependency and test your service in isolation.
35
Why is JSR223 with Groovy preferred over BeanShell in JMeter?
Show answer
JSR223 elements with Groovy compile scripts once and cache them, so they run much faster and use less CPU under load. BeanShell is interpreted on every call and becomes a bottleneck at high thread counts. Groovy also supports modern Java syntax and is the default JSR223 language. Enable caching by keeping the cache compiled script option on and passing values through vars or parameters, not by embedding ${} inside the script.
36
How do you test deep links in a mobile app with Appium?
Show answer
On Android use the mobile: deepLink command with the URL and package, for example driver.executeScript("mobile: deepLink", Map.of("url", "shop://product/42", "package", "com.example.shop")). On iOS simulators driver.get with the custom URL opens it, though Safari may show a confirm dialog to handle. Then assert that the correct screen and data are shown. Deep links are also a great shortcut to reach deep screens quickly in other tests.
37
How do you run Selenium tests in Docker containers in CI?
Show answer
Use official Selenium images, either standalone-chrome for simple runs or a Grid with hub and node containers via Docker Compose. The test container or Jenkins agent points RemoteWebDriver to http://selenium-hub:4444. Containers give the same browser version everywhere and are cleaned after each run. Add shm_size for Chrome stability and record videos for failed tests if needed.
38
Some scenarios are still being developed and must not run in CI yet. How do you handle them?
Show answer
Tag them, for example with @wip, and exclude the tag in the CI runner using a tag expression like not @wip, set through the cucumber.filter.tags property or the runner options. Developers can still run them locally by including the tag. Review @wip scenarios regularly so they do not stay parked forever, and never use the tag to hide failing tests that should be fixed or reported as bugs.
39
Tell me about a time you moved from web automation to mobile automation.
Show answer
Situation: my team needed Android regression tests and I only knew Selenium. Task: deliver a smoke suite in one month. Action: I learned Appium 2 setup, used Appium Inspector to find locators, asked developers to add accessibility ids, and reused our TestNG, POM and reporting structure with a new driver factory. Result: twenty smoke tests ran nightly on emulators within four weeks, and release smoke testing dropped from half a day to forty minutes.
40
Describe a time you automated a manual build or release step for the QA team.
Show answer
Situation: before each regression a tester spent an hour deploying the build to QA and seeding data by hand. Task: remove that manual step. Action: I wrote a Jenkins pipeline stage that deployed the build, ran database seed scripts and a smoke check, then triggered the regression job, and documented it for the team. Result: setup dropped to ten minutes without human effort, and regressions could run overnight automatically.
Tips to crack the Chargebee Automation Testing interview
- Practise DSA problems and object-oriented design, and be ready to write clean, readable code with proper edge case handling.
- Learn basic subscription business concepts like recurring billing, proration, invoices and churn to show interest in the product domain.
- Prepare examples of ownership and learning from mistakes, since product companies like Chargebee value strong culture fit.
- Keep a one-minute story ready for every project on your CV: problem, your part, tools, result.
- Practise the hard questions on this page aloud; Chargebee interviewers usually ask follow-ups on your first answer.
Frequently asked questions
How many rounds are there in the Chargebee Automation Testing interview?
Candidates usually go through 4 stages: Online coding assessment; Technical round 1 (DSA); Technical round 2 (design or practical coding); Hiring manager and culture round. The exact rounds change with the role, team, location and your experience, so confirm the process with the recruiter.
Which topics should I prepare for the Chargebee Automation Testing interview?
This practice set leans on Page Object Model (5), Selenium WebDriver (5), Cucumber and BDD (5), TestNG Framework (4). Revise those first, then practise explaining one or two of your own projects end to end, because most Chargebee interviewers ask you to walk through real work.
Are these the exact questions asked at Chargebee?
No. These are curated practice questions that match the skills and difficulty usually tested in product interviews like Chargebee's. They are not a leaked or verified list of past questions.
Where does Chargebee hire Automation Testing professionals in India?
Chargebee has large teams in Chennai, Bengaluru. Openings and locations change often, so check the Chargebee careers page and filter by city and experience.
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