Discover more about SDET interviews and their formats while mastering the ability to respond adeptly to frequent SDET interview queries by referring to this in-depth guide:
This guide offers a panoramic view of frequently posed interview queries for roles as an SDET. It showcases not just the prevalent interview format, but also features key insights to help candidates excel in their interviews.
Recommended IPTV Service Providers
- IPTVGREAT – Rating 4.8/5 ( 600+ Reviews )
- IPTVRESALE – Rating 5/5 ( 200+ Reviews )
- IPTVGANG – Rating 4.7/5 ( 1200+ Reviews )
- IPTVUNLOCK – Rating 5/5 ( 65 Reviews )
- IPTVFOLLOW -Rating 5/5 ( 48 Reviews )
- IPTVTOPS – Rating 5/5 ( 43 Reviews )
Although the coding problems in this guide utilize Java, SDET guides are usually not influenced by specific languages. Interviewers typically don’t insist on a particular programming language.
Understand More About:
Manual To SDET Interview Preparation
Top-notch product firms often conduct SDET interviews that resemble development role interviews. SDETs are anticipated to possess expansive acumen equal to that of developers.
SDET interviews, however, emphasize critical analytical skills, hands-on coding experience, and an attention to quality and detail.
Focus on the following aspects while getting ready for an SDET interview:
- Be open to learning new technologies and maximizing existing skillsets, given SDET interviews generally do not prioritize a particular technology/language.
- Hone exceptional communication abilities and teamwork, as roles for SDETs demand interaction and collaboration with numerous stakeholders.
- Achieve sound comprehension of system design notions, scope, continuity, non-functional prerequisites, and so on.
The subsequent sections will delve into the universal format of SDET interviews while offering example queries to bolster your preparation.
Method For Software Development Engineer in Test Interview
Enterprises typically have a preferred method for conducting SDET interviews. The interview format might change based on the specific requisites of the role and the team.
SDET interviews, however, fundamentally focus on the following aspects:
- Teleconference: Preliminary dialogue with the manager or team members to evaluate fit.
- Written phase: Queries connected to testing and test case scenarios.
- Evaluation of coding skills: Basic coding queries (irrespective of language) to evaluate coding abilities and understanding of components like edge scenarios and null checks.
- Comprehension of fundamental development concepts: Queries regarding OOPS Concepts, SOLID Principles, etc.
- Test Automation Framework creation and development.
- Scripting languages: Selenium, Python, Javascript, and so on.
- Culture compatibility/HR conversation and negotiation.
Queries and Responses To SDET Interviews
In this part, we’ll ponder over example queries and comprehensive responses for various categories that typically come up during SDET interviews.
Competence In Coding
This round assesses coding skills, including the capacity to command coding modules, edge scenarios, and null checks.
Candidates might occasionally be asked to write unit tests for the code they pen down.
Check out a few coding challenges and their solutions below:
Q #1) Compose a script to interchange two numbers without utilizing a contingent variable.
Response:
Script to interchange two figures:
public class SwapNumbers { public static void main(String[] args) { System.out.println("Invoking swap function with inputs 2 & 3"); swap(2,3); System.out.println("Invoking swap function with inputs -3 & 5"); swap(-3,5); } private static void swap(int x, int y) { System.out.println("Values before swap: " + x + " and " + y); // Logic for swap operation x = x + y; y = x - y; x = x - y; System.out.println("Values after swap: " + x + " and " + y); } }
Outcome of the aforementioned code snippet:
Once the solution’s been submitted, a dry run of the code for multiple inputs is suggested to ascertain its accuracy. Let’s try it for positive and negative values.
Positive values: X = 2, Y = 3
// Logic for swap operation - x=2, y=3 x = x + y; => x=5 y = x - y; => y=2 x = x - y; => x=3 x & y exchanged (x=3, y=2)
Negative values: X = -3, Y = 5
// Logic for swap operation - x=-3, y=5 x = x + y; => x=2 y = x - y; => y=-3 x = x - y; => x=5 x & y exchanged (x=5, y=-3)
Q #2) Compose a script to invert a numeral.
Reply:
Script to invert a numeral:
public class ReverseNumber { public static void main(String[] args) { int num = 10025; System.out.println("Input - " + num + " Output: " + reverseNo(num)); } public static int reverseNo(int number) { int reversed = 0; while(number != 0) { int digit = number % 10; reversed = reversed * 10 + digit; number /= 10; } return reversed; } }
Outcome of this script with input 10025 would be 52001
Q #3) Compose a script to assess a numeral’s factorial.
Reply:
Interviewers often ask factorial queries. For an SDET interview, it’s crucial to deal with edge scenarios such as max values, min values, negative values, etc.
Here’s a script for a factorial using both for-loop and recursion:
public class Factorial { public static void main(String[] args) { System.out.println("Factorial of 5 using loop is: " + factorialWithLoop(5)); System.out.println("Factorial of 10 using recursion is: " + factorialWithRecursion(10)); System.out.println("Factorial of a negative number -100 is: " + factorialWithLoop(-100)); } public static long factorialWithLoop(int n) { if(n < 0) { System.out.println("Negative numbers do not have a factorial"); return -9999; } long fact = 1; for (int i = 2; i <= n; i++) { fact = fact * i; } return fact; } public static long factorialWithRecursion(int n) { if(n < 0) { System.out.println("Negative numbers do not have a factorial"); return -9999; } if (n <= 2) { return n; } return n * factorialWithRecursion(n - 1); } }
Outcome of the mentioned code:
Q #4) Compose a script to verify if a particular string showcases balanced parentheses?
Reply:
Strategy: This problem is slightly more complicated and demands the candidate to think beyond coding constructs. The interviewers also evaluate your ability to utilize a suitable data structure to solve the problem at hand.
Balanced parentheses signify the fact that the parentheses (or brackets) in a given string should exhibit an equal number of opening and closing counts, in a well-structured manner.
Utilize a stack data structure to solve the problem. A stack operates on the LIFO (Last In First Out) principle, akin to a stack of plates where the topmost plate is utilized first.
Algorithm:
#1) Declare a Character Stack (which encompasses the character string and supports push and pull operations).
#2) Go through the input string:
- If you encounter an opening bracket character such as ‘[‘, ‘{‘, or ‘(‘, push it onto the stack.
- If you encounter a closing bracket character such as ‘]’, ‘}’, or ‘)’, pop an element from the stack and verify whether it corresponds to the opening bracket character. If the popped element doesn't correspond to the opening bracket, it signifies the string is not balanced, but if all brackets correspond accurately, the stack will be vacant in the end.
import java.util.Stack; public class BalancedParantheses { public static void main(String[] args) { final String input1 = "{()}"; System.out.println("Confirming balanced parentheses for input: " + input1); if (isBalanced(input1)) { System.out.println("Specified string is balanced"); } else { System.out.println("Specified string is not balanced"); } } /** * Checks if a string has balanced parentheses or not * @param input_string the input string * @return true if the string exhibits balanced parentheses, false otherwise */ private static boolean isBalanced(String input_string) { Stackstack = new Stack<>(); for (int i = 0; i < input_string.length(); i++) { switch (input_string.charAt(i)) { case '[': case '(': case '{': stack.push(input_string.charAt(i)); break; case ']': if (stack.empty() || !stack.pop().equals('[')) { return false; } break; case '}': if (stack.empty() || !stack.pop().equals('{')) { return false; } break; case ')': if (stack.empty() || !stack.pop().equals('(')) { return false; } break; } } return stack.empty(); } }
Outcome of the mentioned code:
Resolving the coding problems defined above entails not just competence in coding components, but also logical reasoning abilities and the capacity to employ suitable data structures and algorithms.
Relating To Test Automation Frameworks
This round concentrates on the design and development of test automation frameworks. The interviewers might pose queries related to framework design, pros and cons of different methods, and other related subjects.
Below are some sample queries and solutions relevant to this round:
Q #5) Enumerate and design the segments of an automation framework meant for a web application.
Reply:
While responding, contemplate the following factors:
- Discuss the variants of frameworks such as data-driven, keyword-driven, and hybrid frameworks.
- Mention the Page Object Model utilized for storing details of modules/pages.
- Delve into general modules like helper functions, utilities, and loggers.
- Discuss reporting modules along with integration of reports with email and scheduling tests.
Suggested Reading: Most Widely Utilized Test Automation Frameworks
Q #6) Elucidate testing strategies for a mobile application.
Reply:
While responding, contemplate the following factors:
<
ul>