01
How do you pass parameters from testng.xml?
Show answer
Define parameter name and value in the XML and read them with @Parameters in the test or configuration method.
Delhivery Automation Testing Interview Questions & Answers
Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.
About Delhivery hiring for Automation Testing roles
Delhivery is an Indian logistics and supply chain company that provides parcel delivery, freight, warehousing and fulfilment services for e-commerce and enterprise clients. It runs a large network of hubs and uses technology for route planning, tracking and automation. It hires software engineers, data scientists, data analysts and operations professionals.
For Automation Testing roles, this Delhivery practice set focuses most on TestNG Framework (7), Git, Maven and Jenkins (6), Page Object Model (5), REST Assured (5). It has 3 easy, 27 medium, 10 hard questions, so you can start easy and work up to the harder ones.
- Company type
- E-commerce & consumer tech
- Headquarters
- Gurugram, India
- Main India offices
- Gurugram, Bengaluru
Delhivery Automation Testing interview process
- Online coding or analytics assessment
- Technical round 1
- Technical round 2 (design or case)
- Hiring manager round
Typical pattern based on public candidate experiences. Rounds vary by role, team and year.
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02
How do you verify that the correct page has loaded in POM?
Show answer
Give each page an isAt() or waitUntilLoaded() method that waits for a unique element, page title or URL fragment. Call it in the constructor or right after navigation. If it fails, throw a clear error such as "Expected Cart page but URL was /login". This catches navigation problems at the right point instead of failing later with a confusing locator error.
03
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.
04
How do you group tests?
Show answer
Tag tests with groups = {"smoke","regression"} and include or exclude them in testng.xml to run chosen sets.
05
How do you read data from Excel or properties files in Java?
Show answer
Use Apache POI for Excel and the Properties class for config files, loaded in a utility class so tests read data instead of hard-coding it.
06
Describe a situation where automation was not the right answer.
Show answer
Situation: a manager wanted a one-time data migration check automated in Selenium. Task: give an honest recommendation. Action: I estimated the UI automation effort, showed a SQL comparison plus a manual sample check would finish in a day, and explained the flows would not repeat. Result: we finished faster, and the team now asks for ROI reasoning before automating.
07
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.
08
How do you test GraphQL APIs compared with REST?
Show answer
GraphQL usually has one endpoint and you send a POST with a query and variables. Tests check the data returned matches the requested fields, that errors appear in the errors array, often with status 200, and that authorization applies per field. Also test query depth limits and nested queries for performance. REST Assured works fine by sending the query as JSON body.
09
What are Maven profiles and how do you use them in automation?
Show answer
Profiles are sets of configuration activated by name, such as -Pqa or -Pstaging, or by conditions. In automation they switch environment URLs, suite files, browsers or parallel settings without changing code. For example a regression profile sets suiteXml to regression.xml and threadCount to 4. Combined with properties files, profiles keep one codebase for every environment.
10
How do you measure and assert API response time in REST Assured?
Show answer
Use then().time(lessThan(2000L)) for a quick check or response.getTimeIn(TimeUnit.MILLISECONDS) to log the value. This measures client-side time, including network, so set generous thresholds and treat it as a smoke signal, not a performance test. For real load and latency percentiles, use tools such as JMeter, Gatling or k6.
11
What are page components or page fragments in POM?
Show answer
Components are classes for UI parts that repeat across pages, such as the header, search bar, date picker or a data table. A page object then has-a component: homePage.header().search("laptop"). This follows composition over inheritance, avoids duplicate locators and matches modern component-based frontends. Components are usually scoped to a root WebElement so locators search only inside that element.
12
What is serialization and deserialization in REST Assured?
Show answer
Serialization converts a Java object (POJO) into JSON for the request body; deserialization converts the response JSON back into a Java object. REST Assured does this automatically when Jackson or Gson is on the classpath: body(userPojo) serializes and response.as(User.class) deserializes. Using POJOs gives type safety, IDE support and cleaner assertions compared with hand-written JSON strings.
13
Tell me about a time you led the design of a test framework for a new project.
Show answer
Situation: a new product had no automation and a three-month release target. Task: I was asked to set up the framework and guide two juniors. Action: I chose Java, TestNG, Selenium with POM and REST Assured, set up Maven, Jenkins and Allure, wrote conventions and reviewed every pull request early on. Result: we had 250 stable tests in CI before release, and the juniors could extend it independently.
14
What are TestNG and JUnit 5 differences that matter in automation?
Show answer
TestNG has built-in groups, dependencies, suite XML, DataProvider and flexible parallel options, which suit large Selenium suites. JUnit 5 has a modular platform, tags, parameterized tests, extensions and strong IDE and tool support, and is the default for Spring and Cucumber's JUnit Platform engine. Both are capable; the choice usually follows team standards and existing frameworks.
15
Write a declarative Jenkinsfile that runs Maven tests and publishes results.
Show answer
pipeline {
agent any
parameters { choice(name: 'SUITE', choices: ['smoke', 'regression']) }
stages {
stage('Checkout') { steps { checkout scm } }
stage('Test') {
steps { sh "mvn clean test -DsuiteXml=${params.SUITE}.xml" }
}
}
post {
always {
junit 'target/surefire-reports/*.xml'
archiveArtifacts artifacts: 'target/screenshots/**', allowEmptyArchive: true
}
}
}
16
What is the use of Maven in automation projects?
Show answer
It manages dependencies through pom.xml, builds the project, runs tests with Surefire and standardises structure across teams.
17
How does the DataProvider annotation work?
Show answer
A method annotated with @DataProvider returns a 2D object array and the test with dataProvider = "name" runs once per row.
18
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.
19
Tests run fine on Chrome but fail on Firefox at the same step. How do you investigate?
Show answer
Rerun on Firefox with screenshots and logs. Common causes are timing differences, different default window sizes, unsupported CSS or JavaScript behaviour, alerts handled differently, or a driver version mismatch. Compare the DOM in both browsers at that step. Fix by using explicit waits, setting window size, and reporting genuine browser bugs to developers.
20
Your CI pipeline is blocked because a downstream service needed for API tests is often down. What do you do?
Show answer
Add a health check stage that pings dependencies before tests and marks the run as environment failure rather than test failure. For tests that do not need the real service, use stubs. Escalate with data on downtime frequency to the team owning the service. Keep a separate scheduled job for the real integration tests so pull requests are not blocked.
21
Your framework throws NullPointerException in a page object on the first action. What are the likely causes?
Show answer
The driver was never initialised or was passed as null, for example a page created before setup ran or a static driver not yet assigned. With PageFactory, initElements may not have been called, so @FindBy fields are null. A config value read from a properties file may also be missing. Check the stack trace line, then fix the setup order and add null checks with clear messages.
22
What branching strategy do you use for test automation code?
Show answer
Most teams use trunk-based development or a light GitHub Flow: short-lived feature branches from main, a pull request with review and a CI run, then merge. Long-lived branches cause painful conflicts. Keep automation code in the same repository as the app when possible so tests change together with features, or tag test versions to match app releases.
23
How do you make page objects work with dynamic locators, such as a row containing a given name?
Show answer
Write a method that builds the locator from a parameter, for example private By rowFor(String name) { return By.xpath("//tr[td[normalize-space()='" + name + "']]"); }, and expose actions like deleteUser(name). Keep the template in the page class, not in tests. Escape quotes if names may contain them, and prefer CSS with data attributes when the application provides them.
24
How are throughput, response time and concurrent users related?
Show answer
Little's Law links them: concurrent users equal throughput multiplied by the time each user spends per request, which is response time plus think time. For example, 50 requests per second with 2 seconds response and 8 seconds think time needs about 500 users. If response time rises while users stay fixed, throughput falls. This helps you size thread counts from a target throughput and spot when the system has saturated.
25
What are the standalone, hub and node, and distributed modes of Selenium Grid 4?
Show answer
Standalone runs every Grid component and a local node in a single process, which suits a laptop or a single container. Hub and node mode runs the router, distributor, queue and session map together as the hub, with separate node processes registering to it, which is the usual team setup. Fully distributed mode runs each component separately, often on Kubernetes, for very large grids that need independent scaling and high availability.
26
Your UI tests run noticeably slower on the Grid than on your laptop. How do you find the cause?
Show answer
Every command now travels over the network, so chatty code with many findElement calls or getText in loops suffers most. Check latency between test runner and Grid, ideally keeping them in the same network or region. Check node resources: overloaded CPU or many sessions per container slow browsers. Video recording and VNC add overhead. Reduce round trips by batching checks, using JavaScript for bulk reads and avoiding implicit waits combined with explicit ones.
27
Write Appium code to scroll to an element by its text using UiScrollable on Android.
Show answer
// Scrolls the first scrollable container until the text is visible
String selector = "new UiScrollable(new UiSelector().scrollable(true))"
+ ".scrollIntoView(new UiSelector().text(\"Order History\"))";
WebElement item = driver.findElement(AppiumBy.androidUIAutomator(selector));
item.click();
28
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.
29
Response time grows slowly over a six-hour soak test while load stays constant. What does it suggest?
Show answer
A steady rise under constant load usually indicates a resource leak, such as memory not being freed, growing caches, unclosed database connections or threads, or log and temp files filling disk. Check heap usage and garbage collection trends, connection pool counts and open file handles over time. A heap dump comparison can show which objects grow. Share the evidence with developers, since such issues rarely appear in short tests.
30
What is the @Factory annotation in TestNG?
Show answer
@Factory creates test class instances dynamically, each with different constructor data, so all tests in the class run once per instance. For example a factory can create LoginTests for chrome and firefox. It differs from DataProvider, which runs one method many times with different arguments. Factory is useful when a whole class should repeat for each configuration.
31
Write a JSR223 Groovy PostProcessor that reads a JSON response and stores a value as a JMeter variable.
Show answer
// JSR223 PostProcessor, language: groovy
import groovy.json.JsonSlurper
def body = prev.getResponseDataAsString()
def json = new JsonSlurper().parseText(body)
if (json?.orderId) {
vars.put('orderId', json.orderId.toString())
} else {
prev.setSuccessful(false)
prev.setResponseMessage('orderId missing in response')
}
32
What are the main OOP concepts in Java?
Show answer
Encapsulation, inheritance, polymorphism and abstraction. Testers use them to build reusable page classes, base tests and utility libraries.
33
Write Appium Java code to perform a vertical swipe using W3C Actions.
Show answer
// Swipe up from 80% to 20% of the screen height
Dimension size = driver.manage().window().getSize();
int x = size.width / 2;
int startY = (int) (size.height * 0.8);
int endY = (int) (size.height * 0.2);
PointerInput finger = new PointerInput(PointerInput.Kind.TOUCH, "finger");
Sequence swipe = new Sequence(finger, 1);
swipe.addAction(finger.createPointerMove(Duration.ZERO, PointerInput.Origin.viewport(), x, startY));
swipe.addAction(finger.createPointerDown(PointerInput.MouseButton.LEFT.asArg()));
swipe.addAction(finger.createPointerMove(Duration.ofMillis(600), PointerInput.Origin.viewport(), x, endY));
swipe.addAction(finger.createPointerUp(PointerInput.MouseButton.LEFT.asArg()));
driver.perform(List.of(swipe));
34
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'].
35
How do you decide what to automate?
Show answer
Automate stable, repetitive, high-risk and data-heavy flows (smoke, regression). Skip one-time tests, frequently changing UI and checks needing human judgement. Compare run frequency × manual time with build and maintenance cost.
36
How do you handle authentication types in REST Assured?
Show answer
Basic auth uses auth().preemptive().basic(user, pass). Bearer tokens are set as a header: header("Authorization", "Bearer " + token). OAuth 2.0 can use auth().oauth2(token) after fetching the token from the token endpoint. API keys go in a header or query param. Fetch tokens once per suite or cache them with an expiry check rather than logging in before every test.
37
How do you verify response time and headers in REST Assured?
Show answer
Use then().time(lessThan(2000L)) and then().header("Content-Type", containsString("json")) along with body assertions.
38
An API test passes alone but fails when the suite runs in parallel. What could be wrong?
Show answer
Likely shared state. Common causes are static RestAssured settings changed by one test, shared test data like the same user being updated by two tests, token reuse after another test logged out, or rate limits. Fix by using per-test RequestSpecification instead of global statics, creating unique data per test, isolating tokens, and checking server rate-limit responses such as 429.
39
What is a Jenkins pipeline?
Show answer
A scripted or declarative Jenkinsfile that defines stages such as build, test and deploy as code stored with the project.
40
During a load test response times rise sharply. Which server-side metrics do you check?
Show answer
Check CPU and memory usage of application servers, garbage collection pauses and heap usage for Java services, thread pool and connection pool saturation, database slow queries, locks and connection counts, disk I/O and network bandwidth. Also look at load balancer and cache hit rates and error logs. Correlate the timestamp of the slowdown with these graphs in an APM or monitoring tool to find which resource saturated first.
Tips to crack the Delhivery Automation Testing interview
- Learn logistics basics such as first mile, last mile, hub operations and shipment tracking to discuss the domain.
- Practise optimisation-style problems and graph algorithms, which connect well to routing and network planning work.
- For analyst roles, revise SQL and Excel, and prepare to analyse delivery delays or cost per shipment in a case.
- 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; Delhivery interviewers usually ask follow-ups on your first answer.
Frequently asked questions
How many rounds are there in the Delhivery Automation Testing interview?
Candidates usually go through 4 stages: Online coding or analytics assessment; Technical round 1; Technical round 2 (design or case); Hiring manager 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 Delhivery Automation Testing interview?
This practice set leans on TestNG Framework (7), Git, Maven and Jenkins (6), Page Object Model (5), REST Assured (5). Revise those first, then practise explaining one or two of your own projects end to end, because most Delhivery interviewers ask you to walk through real work.
Are these the exact questions asked at Delhivery?
No. These are curated practice questions that match the skills and difficulty usually tested in e-commerce & consumer tech interviews like Delhivery's. They are not a leaked or verified list of past questions.
Where does Delhivery hire Automation Testing professionals in India?
Delhivery has large teams in Gurugram, Bengaluru. Openings and locations change often, so check the Delhivery careers page and filter by city and experience.
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