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Swiggy Software Testing Interview Questions & Answers

Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.

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01

What is the difference between a test suite and a test run?

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A suite is a collection of related test cases; a run is one execution of a set of tests against a build.
02

What is the difference between a bug and an enhancement?

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A bug is behaviour that deviates from agreed requirements; an enhancement is a new or improved capability beyond the current requirements.
03

How do you decide the priority of test cases?

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By business criticality, usage frequency, defect history, risk and dependencies, running high-priority cases first.
04

What are the characteristics of a good test case?

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Clear, concise, independent, repeatable, traceable to a requirement, with precise expected results and tested data.
05

Write test cases for a shopping cart.

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Add, remove, update quantity, price and tax calculation, coupon codes, stock limits, cart persistence after login and checkout navigation.
06

Write test cases for an ATM withdrawal.

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Valid card and PIN, wrong PIN, three failed attempts, amount above balance, amount above daily limit, invalid denomination, machine out of cash, network failure and receipt printing.
07

What is software testing and why is it needed?

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Evaluating software to find defects and confirm it meets requirements. It reduces risk, protects users and saves the cost of fixing bugs after release.
08

Write test cases for a signup form.

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Mandatory fields, email format, password rules, duplicate email, terms checkbox, captcha, confirmation email and field length limits.
09

How do you test a REST API that is not ready yet?

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Use mocks or stubs from the API contract such as Swagger, write test cases early and validate again when the real service is available.
10

What are the boundary values for an age field that accepts 18–60?

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Test 17, 18, 19, 59, 60 and 61.
11

What is exploratory testing?

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Learning, test design and execution at the same time, without scripted cases — time-boxed sessions with a charter (e.g. 'explore checkout with coupons'), noting bugs and ideas. Great for finding edge cases.
12

What is accessibility testing?

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Checking that people with disabilities can use the product, using screen readers, keyboard navigation, colour contrast and WCAG guidelines.
13

What is JQL?

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JIRA Query Language, used to search issues, for example project = ABC AND status = Open AND priority = High.
14

What goes into a test plan?

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Scope (in and out), objectives, approach, environments, schedule, roles, entry/exit criteria, risks and mitigation, deliverables and tools.
15

What makes a good bug report?

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A clear title, steps to reproduce, expected vs actual result, environment/build, severity and priority, and evidence (screenshot, video, logs).
16

What is defect leakage?

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Defects found after release that testing should have caught; leakage % = defects in production / total defects x 100.
17

What is a test environment?

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The hardware, software, data and configuration where testing happens, set up to mirror production as closely as practical.
18

How do you reduce the number of defects slipping into production?

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Shift left with early reviews, improve test design, automate regression, use better test data, add monitoring and learn from escaped defects.
19

What is TDD vs BDD?

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TDD writes unit tests before code to drive design; BDD describes behaviour in business language scenarios that become automated acceptance tests.
20

What is UAT?

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User Acceptance Testing — end users or the client verify that the system meets business needs in a production-like environment before go-live.
21

Write test cases for a calculator app.

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Basic operations, division by zero, decimals, large numbers, order of operations, clear and backspace, repeated operations and memory keys.
22

SQL: find duplicate emails.

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SELECT email, COUNT(*) FROM users GROUP BY email HAVING COUNT(*) > 1;
23

What is test coverage and how do you measure it?

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The extent of requirements or code exercised by tests. Measure requirement coverage with a traceability matrix and code coverage with tools.
24

Functional vs non-functional testing?

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Functional testing checks what the system does (login, checkout). Non-functional testing checks how well it does it (performance, security, usability, compatibility).
25

What is the difference between static and dynamic testing?

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Static testing reviews documents and code without executing; dynamic testing executes the software to observe behaviour.
26

What are the typical JIRA workflows for bugs?

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Statuses like To Do, In Progress, In Review, Ready for QA, Done and Reopened, with transitions that depend on the team's configuration.
27

How do you estimate testing effort?

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Break the work into modules and test cases, use past velocity or three-point estimation (optimistic, likely, pessimistic), add time for test data, environment issues, retesting and regression, and keep a risk buffer.
28

How do you write a good bug title?

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State the problem, location and condition briefly, for example 'Checkout button disabled after applying a coupon on the cart page'.
29

Write a SQL query to find duplicate records.

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SELECT email, COUNT(*) FROM users GROUP BY email HAVING COUNT(*) > 1;
30

Severity vs priority — with an example.

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Severity = impact on the system. Priority = urgency to fix. Logo misspelt on the homepage → low severity, high priority. Crash in a rarely used report → high severity, low priority.
31

Write test cases for an online money transfer.

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Valid transfer, insufficient balance, daily limit, wrong beneficiary, OTP failure, network drop mid-transaction, duplicate click and statement update.
32

How would you test a payment gateway?

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Success, failure and pending flows, timeouts, refunds, double-click payments, every method (UPI, cards, net banking), rounding, security (no card data stored) and reconciliation with bank reports.
33

What is a test scenario for the login functionality at a high level?

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Valid login, invalid login, forgot password, locked account and session handling are the main scenarios to cover.
34

What is the difference between DELETE and TRUNCATE?

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DELETE removes selected rows and can be rolled back; TRUNCATE quickly removes all rows and resets the table.
35

What is performance testing and its types?

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Measuring speed and stability: load (expected users), stress (beyond limits), spike (sudden surge), endurance (long duration) and scalability testing.
36

A bug is not reproducible. What next?

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Re-check environment, data, browser and steps; check the logs; try the reporter's setup; add video and console logs; mark it 'cannot reproduce' only after discussing with the developer, and keep monitoring.
37

What is error guessing?

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Using experience to guess where defects likely hide, such as empty fields, special characters or unexpected sequences, and designing tests for them.
38

What is the use of SQL GROUP BY and HAVING in test validation?

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They let testers verify totals and counts per category, such as the number of orders per customer, and compare them with the UI or reports.
39

What is a blocker bug?

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A defect that stops testing or release of a feature because no workaround exists, so it is highest priority.
40

What is the definition of done?

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A shared checklist for when a story is complete, usually including code review, tests passing, no open critical bugs and documentation updated.
41

What is CI/CD and how does testing fit?

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Code is built and tested automatically on each change; tests are quality gates that stop faulty builds from moving forward.
42

What is a bug triage meeting?

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A regular review where QA, development and product assess new bugs and decide severity, priority, owner and target release.
43

What is decision table testing?

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List conditions and actions in a table and cover every combination of conditions (rules) — ideal for business rules like loan approval: salary > X AND credit score > Y → approve.
44

What metrics do QA teams track?

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Test execution rate, pass percentage, defect density, defect leakage, defect rejection ratio, requirement coverage and automation coverage.
45

Smoke vs sanity testing?

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Smoke testing checks that the critical features of a new build work (broad and shallow). Sanity testing checks that a specific fix or area works after a change (narrow and deep).
46

What is defect clustering?

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The observation that a small number of modules contain most defects, so testing should focus on those areas.
47

What is the difference between a test case and a test scenario?

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A scenario is a high-level thing to test (user logs in); test cases are the detailed steps and data that verify it.
48

What is mobile app testing and what extra checks does it need?

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Test on real devices and OS versions, interrupts such as calls, battery, network changes, gestures, permissions and app store guidelines.
49

Write SQL to verify an order was saved correctly.

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SELECT status, amount FROM orders WHERE order_id = 'ORD123'; -- compare with the UI, then check the matching rows in order_items
50

What is localisation and internationalisation testing?

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Internationalisation tests that the product can support many languages and formats; localisation tests that a specific locale is correct for text, currency, date and layout.
51

Production has a critical bug. What are your steps?

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Reproduce and assess impact, inform stakeholders, help developers fix and verify in staging, run regression and check monitoring after the hotfix, then do a post-mortem.
52

What are positive and negative test cases?

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Positive cases use valid inputs to confirm expected behaviour; negative cases use invalid inputs to confirm the system handles errors gracefully.
53

What is usability testing?

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Evaluating how easy and pleasant a product is to use by observing real users complete tasks and noting confusion.
54

What are the seven principles of testing?

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Testing shows presence of defects, exhaustive testing is impossible, test early, defects cluster, the pesticide paradox, testing is context-dependent and absence-of-errors is a fallacy.
55

What is a test plan and what does it contain?

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A document defining scope, approach, resources, schedule, entry and exit criteria, risks and deliverables of testing.
56

What is a test case and its components?

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A set of steps with inputs and expected results. Components: ID, title, preconditions, steps, test data, expected result, actual result and status.
57

What are SQL constraints?

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Rules such as NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY and CHECK that keep data valid and consistent.
58

How do you test pagination, sorting and filtering through an API?

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Send page, size, sort and filter parameters, then verify counts, order, boundaries (first, last, empty page) and invalid parameter handling.
59

What is risk-based testing?

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Prioritising tests by the likelihood and impact of failure, so critical areas get the most coverage when time is limited.
60

How do you review test cases?

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Peer review for clarity, coverage of requirements, correct expected results, test data and traceability, then update and baseline them.
61

The developer says "it's not a bug". What do you do?

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Re-check the requirement, reproduce with clear steps and evidence (screenshots, logs), discuss with the BA/PO and record the final decision.
62

Explain SQL joins briefly.

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INNER returns matching rows, LEFT keeps all left rows, RIGHT keeps all right rows and FULL keeps all rows from both tables.
63

What is configuration testing?

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Verifying the application works across different hardware, software and settings combinations.
64

What is root cause analysis for defects?

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Finding why a defect was introduced, such as unclear requirements or missed reviews, to prevent similar defects in future.
65

Release is tomorrow and you can't test everything. What now?

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Risk-based testing: cover critical user flows, recent changes and high-defect areas first. Clearly communicate the untested risks and get stakeholder sign-off.
66

What is compatibility testing?

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Checking the application works across browsers, devices, operating systems, screen sizes and network conditions.
67

What is use case testing?

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Designing tests from user flows described in use cases to verify complete real-world interactions.
68

What is state transition testing?

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Testing how a system moves between states based on events, for example an order going from placed to paid to shipped to delivered.
69

What is a sprint planning meeting and what does QA contribute?

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The team selects stories for the sprint. QA helps estimate testing effort, clarifies acceptance criteria and flags dependencies and risks.
70

What is a sprint retrospective?

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A team meeting at the end of a sprint to discuss what went well, what did not and what to improve next.
71

What is defect density?

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The number of defects per size of software, for example defects per thousand lines of code or per module, used to compare quality.
72

What is the difference between a story, epic, task and bug in JIRA?

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An epic is a large body of work; stories are user-facing slices of it; tasks are technical work items; bugs are defects.
73

What is a REST API?

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An API style using HTTP methods on resources identified by URLs, usually exchanging JSON and staying stateless.
74

Verification vs validation?

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Verification: are we building the product right? (reviews, walkthroughs — no code run). Validation: are we building the right product? (actual testing against user needs).