introduction to software testing coursera week 1 assignment answers

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Introduction to Software Testing

University of Minnesota via Coursera Help

• Introduction
• In this module, you will be introduced to the basics of testing, especially the variety of terminology to be used through the rest of the course.
• Testing Foundations
• In this module, you will investigate a variety of testing principles, models of testing, and types of systematic testing strategies.
• Testing in the Software Development Lifecycle
• In this module, you will learn about the social aspects of testing. We will learn about test plans, testing status reports, and defect reporting.
• Writing Good Unit Tests
• In this module, you will learn about writing unit tests and gain practice in writing these tests through three coding assignments, each with additional testing sophistication.

Kevin Wendt

• united states

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4.5 rating, based on 2 Class Central reviews

4.4 rating at Coursera based on 720 ratings

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Start your review of Introduction to Software Testing

• Atila Romero 3 years ago Gives a solid foundation on testing theory and concepts. The practical part has an exercise on writting a test plan and Java exercises on unit tests, code coverage, and testing doubles (like mocking). I did not like the exercise on writting a test plan, I considered it not practical, maybe a little outdated. I do not think it fits well in an Agile/Lean/DevOps approach. But there was only a single one of this kind in the course. The coding exercises were good. I wish it explored more complex scenarios, like integration and system tests, but then the course would be more advanced. Since this is the first course of 4 in a specialization, this makes sense as it is. Helpful
• YA Yahye Mohamed Abdi 4 years ago I have just had a three weak or four weak or five weak searching in this course i would love to write some reviews good and bad dozens of places visited. Helpful

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Course review: Introduction to software testing (Coursera)

A couple of months ago, I took a course on Coursera named "Introduction to software testing" , which is a part of the "Software testing and automation" specialization. And I'd like to add my 2 cents.

Before we dive in, I'll TL;DR it for you:

• Theoretical concepts are properly explained.
• Provides a solid foundation for future learning about software testing.
• Knowledgeable instructors from a respected university.
• Interaction with students and teachers is next to nothing.
• Course content feels outdated or out of place at times.

Although I'm not the biggest fan, you can't blame this course for not doing what it says on the tin: provide an introduction to software testing . It touches on a fair amount of theoretical concepts which testers should understand. And even developers will find there's a lot in it for them.

The theory behind testing

Module 1 starts off by answering the questions "What is a test?" , "Why should we test?" and "How can we test well?" . The course then discusses the differences between validation and verification, and progresses towards the V-Model .

Although a strict application of the V-Model is perhaps rather unusual, being conscious of it is still beneficial towards a better understanding of software testing.

In the second module, topics such as dependability , structural testing , mutation testing and error-prone aspects (null pointers, boundaries ...) are also brought up.

Up to here, I was very enthusiastic. There's a lot of valuable information in these two modules. Even more for testers who don't have a background in software engineering, such as myself.

Test plan(ning)

However, the third module is where I started to feel lost. Some advice from the videos is definitely actionable (e.g. "also document what can not be tested"), but the content here feels outdated and too comprehensive. More specifically, the part about defect reporting seems like something I could've made in half an hour of browsing through JIRA tickets.

To make matters worse, the exercise we were given was quite frustrating. You are asked to draft a test plan for a fictional application by applying what you've learned, then submit it for review by your fellow students. I'm sorry to say that the requirements of the application under test make it feel like we're back at MS-DOS. Hello, 2020?!

After submission, you're also asked to review test plans from other students, using a list of multiple choice questions (e.g. "does the test plan include information about X?"). Unfortunately, based on the examples I've seen, a lot of students don't take the exercise (both writing and reviewing) serious and just want to make it through. I also seriously doubt whether the grading system truly evaluated the quality of a submission.

Writing unit tests

The fourth and final module covers writing unit tests ( JUnit , Mockito ) and code coverage ( JaCoCo ). You're asked to write unit tests and these should cover a specific percentage of the code and reveal the bugs in the code you were given. These assignments are graded via automated scripts, which is a fairly good process and I really enjoyed working on this.

Despite my enjoyment, it didn't feel like the right time and place for practical exercises about unit tests. Neither is it detailed enough to really grasp unit testing. Shouldn't this be incorporated into another course of this specialization?

I would very much recommend the first and second module of this course. But the third and fourth module just didn't feel right.

That holds me back from taking the next course in the specialization, which currently also has a lower review score. When you add the lack of interaction with other students and teachers, it's not encouraging me to continue. But it was well worth the effort!

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Programming Assignment: Writing a Unit Test Solution

In this article i am gone to share Programming with JavaScript by meta Week 4 | Programming Assignment: Writing a Unit Test Solution with you..

Enroll Link: Programming with JavaScript

Visit this link:  Programming Assignment: Array and object iteration Solution

Lab Instructions: Unit Testing

Tips: Before you Begin

To view your code and instructions side-by-side, select the following in your VSCode toolbar:

• View -> Editor Layout -> Two Columns
• To view this file in Preview mode, right click on this README.md file and  Open Preview
• Select your code file in the code tree, which will open it up in a new VSCode tab.
• Drag your assessment code files over to the second column.
• Great work! You can now see instructions and code at the same time.
• Questions about using VSCode? Please see our support resources here: Visual Studio Code on Coursera

To run your JavaScript code

• Select your JavaScript file
• Select the “Run Code” button in the upper right hand toolbar of VSCode. Ex: It looks like a triangular “Play” button.

Task 1: Add Jest as a devDependency

Open terminal. Make sure that it’s pointing to  jest-testing  directory. Install the jest npm package using the npm install command and the –save-dev flag. Verify that the installation was completed successfully by opening the package.json file and confirming that the “devDependencies” entry lists jest similar to the following:

Task 2: Update the test entry

In the package.json file, locate the “scripts” entry, and inside of it, update the test entry to  jest .

Task 3: Code the timesTwo function

Open the timesTwo.js file and add a function named  timesTwo . The function should take number as input and return the value 2 multiplied by the number. Export the timesTwo function as a module.

Task 4: Write the first test

Code a test call with the following arguments:

• The description that reads: “returns the number times 2”.
• The second argument should expect the call to the timesTwo function, when passed the number 10, to be 20.

Task 5: Run the first test

With the terminal pointed at the  jest-testing  directory, run the test script using npm.

• Copy & paste this code on Files..
• And save your file and then submit.

First Change in this file timesTwo.js

Second Change in this file timesTwo.test.js

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Greetings, Hey i am Niyander, and I hail from India, we strive to impart knowledge and offer assistance to those in need.

Software Testing | Week 1

Session: JAN-APR 2024

Course name: Software Testing

Course Link: Click Here

For answers or latest updates join our telegram channel: Click here to join

These are NPTEL Software Testing Week 1 Assignment 1 Answers

Q1. Pick the correct statement from the following: a. Every programming error causes a bug b. Every programming error is caused by a failure c. Every failure is caused by a fault d. Every bug can be tracked to a programming error e. Every bug causes a failure

Answer: c. Every failure is caused by a fault

Q2. The main purpose of integration testing is to find which one of the following types of errors? a. Logic errors b. algorithm errors c. Arithmetic errors d. Design errors e. Module interfacing errors

Answer: e. Module interfacing errors

Q3. Which of the following are performance test cases for a Library automation software? a. Measuring the response time of book issue b. Checking whether a book is correctly removed from the list of borrowed books of a member after return of the book c. Checking how easy the system is to use by a member d. Checking if after the details of a procured book is entered, it is corrected added to the book list e. Checking whether a member can issue out a reserved book

Answer: a, c

Q4. Usability issues are tested during which one of the following type of testing? a. Unit testing b. Integration testing c. Performance testing d. Regression testing e. Smoke testing

Answer: c. Performance testing

Q5. The purpose of the error seeding technique is which of the following? a. Determine the origin of the bugs b. Plant trojans in code c. Determine the number of latent bugs d. Plant insidious bugs before delivery to the customer e. Introduce known bugs in code to determine whether testing is adequate

Answer: c. Determine the number of latent bugs e. Introduce known bugs in code to determine whether testing is adequate

Q6. Which of the following are false concerning verification? a. Helps answer the question: “Have you built the right thing?” b. Concerns checking the final product against its specification. c. Usually carried out by the test team. d. May consist of review and simulation activities e. Checks whether an artifact produced at the end of a phase conforms to the corresponding artifact produced in a previous phase.

Answer: a. Helps answer the question: “Have you built the right thing?” b. Concerns checking the final product against its specification. c. Usually carried out by the test team.

Q7. Who among the following performs acceptance testing? a. Customer b. Quality assurance team of the developing organization c. Developers d. System analysts e. Test team of the developing organization f. Independent third party testers

Answer: a. Customer

Q8. Which one of the following testing techniques would be effective for testing whether a developed software meets its non-functional requirements? a. Path testing b. Dataflow testing c. Performance testing d. Robust boundary-value testing e. Smoke testing

Q9. Unit testing of a software module does NOT test which of the following? a. Whether the module interfaces well with other modules. b. Whether the functions in the module are working as per design. c. Whether all arithmetic statements in the module are working properly. d. Whether the module meets the non-functional requirements specified in the SRS document e. Whether all control statements in the module are working properly.

Answer: a. Whether the module interfaces well with other modules. d. Whether the module meets the non-functional requirements specified in the SRS document

Q10. Suppose an untested program was determined to contain 1280 bugs. Three different testing techniques were applied to test the code. Each testing technique is effective to detect 50% of the bugs that exist before the concerned testing technique is applied. After each testing strategy is applied a bug fix cycle is carried out. While fixing a bug, there is a 50% chance of creating another bug. How many bugs would exist in the code after the three testing and bug-fix cycles have been carried out? a. 400 b. 540 c. 760 d. 840 e. 1024

Answer: b. 540

More Weeks of Software Testing: Click here

More Nptel Courses: https://progiez.com/nptel-assignment-answers

Course Name: Software Testing

Q1) The purpose of the error seeding technique is which of the following? a. Determine the origin of the bugs b. Plant trojans in code c. Determine the number of latent bugs d. Plant insidious bugs before delivery to the customer e. Introduce known bugs in code to determine whether testing is adequate

Answer: c, e

Q2) The main purpose of integration testing is to find which one of the following types of errors? a. Logic errors b. algorithm errors c. Arithmetic errors d. Design errors e. Module interfacing errors

Q3) Usability issues are tested during which one of the following type of testing? a. Unit testing b. Integration testing c. Performance testing d. Regression testing e. Smoke testing

Q4) Pick the correct statement from the following : a. Every programming error causes a bug b. Every programming error is caused by a failure c. Every failure is caused by a fault d. Every bug can be tracked to a programming error e. Every bug causes a failure

Q5) Which one of the following is false concerning verification? a. Helps answer the question : “Have you built the right thing?” b. Concerns checking the final product against its specification. c. Usually carried out by the test team. d. May consist of review and simulation activities e. Checks whether an artifact produced at the end of a phase conforms to the corresponding artifact produced in a previous phase.

Answer: a, b, c

Q6) Who among the following performs acceptance testing? a. Customer b. Quality assurance team of the developing organization c. Developers d. System analysts e. Test team of the developing organization

Q7) Which one of the following testing technique is effective for testing whether a developed software meets its non-functional requirements? a. Path testing b. Dataflow testing c. Performance testing d. Robust boundary-value testing e. Smoke testing

Q8) Unit testing of a software module does NOT test which of the following? a. Whether the module interfaces well with other modules. b. Whether the functions in the module are working as per design. c. Whether all arithmetic statements in the module are working properly. d. Whether the module meets the non-functional requirements specified in the SRS document e. Whether all control statements in the module are working properly.

Answer: a, d

Q9) Which one of the following can be inferred from the pesticide paradox? a. Greater number of bugs are detected towards the end of a testing process b. More severe bugs are detected towards the end of a testing process c. After a test methodology has been used on a program to detect bugs, it is ineffective for detecting the remaining bugs d. A test methodology should be applied again and again until all the bugs have been eliminated e. A good testing methodology when used several times on a program, effectively expose almost all bugs latent in it

Answer: c. After a test methodology has been used on a program to detect bugs, it is ineffective for detecting the remaining bugs

Q10) The V model of software development is not appropriate for the development of which of the following applications? a. Nuclear reactor control software b. Avionics software c. Automotive control software d. Management information system (MIS) software e. Graphical user interface development project

Answer: d, e

1. Choose the right option to fill in the blank: Suppose a method M1M1 calls a method M2M2, which in turn, calls another method M3M3. The level of testing that tests for the interface of calls from M1M1 to M2M2 and then to M3M3 is called as . . . . . . . . . . . .. a. Functional testing. b. Unit testing. c. Integration testing. d. System testing.

2. State true or false: A coverage criterion C 1 said to subsume another coverage criterion C 2 if there is at least one test case that satisfies C 1 which also satisfies C 2 . a. True. b. False.

3. State true or false: Testing can be used to find all the errors in code. a. True. b. False.

4. Which of the following are practised in level 3 thinking during testing? a. Testing is a mental discipline, everyone in an organization strives to test thoroughly. b. Testing is done mainly by developers, to debug their code. c. Testing is done to identify failures and reduce risks. d. Testing is done to show absence of errors.

5. Which of the following best defines usability testing? a. Testing done to ensure that the software looks nice. b. Testing done to ensure that the software is usable by all the users. c. Testing done to understand how users can use a software.” d. Testing done to ensure that the user interface of the software is as specified in the requirements

6. Which of the following is a list of white-box testing techniques?

7. As per the lectures, which of the following sentences best defines a test case? a. A test case contains only inputs to the software artifact. b. A test case contains inputs to the software artifact along with the expected outputs c. A test case contains inputs to the software artifact and a decision on pass or fail. d. A test case contains inputs to the software artifact, which is run and the actual output is also recorded as a part o f the test case.

8. When do we say that a set of test cases T satisfies the test requirements TR for a coverage criterion C? a. For every test requirement tr ∈ TR, there is exactly one test case t ∈ T such that t satisfies tr. b. For some test requirement tr ∈ TR, there is some test case tt such that t∈T such that t satisfies tr. c. For some test requirement tr∈TR, all the test cases t∈T are such that tt satisfies tr. d. For every test requirement tr ∈ TR, there is at least one test case t ∈ T such that t satisfies tr.

9. When do we say that a coverage criterion C 1 subsumes a coverage criterion C 2 ?

10. What does the JUnit assertion assertFalse(val1 > val2) return whenval1 is less than val2? a. True. b. False.

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