Shadowing Practice: Seven Testing Principles: Software Testing - Learn English Speaking with Video

Les maken...
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Consider a scenario where you are moving a file from folder A to folder B.
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Think of all the possible ways you can test this.
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Pause the tutorial and think over the exercise.
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Apart from the usual scenarios, you can also test the following conditions.
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trying to move the file when it is open.
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You do not have the security rights to paste the file in folder B.
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Folder B is on a shared drive and storage capacity is full.
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Folder B already has a file with the same name.
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In fact, the list is endless.
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Or suppose you have 15 input fields to test, each having 5 possible values.
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The number of combinations to be tested would be 5 raised to 15.
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If you were to test all the possible combinations, project execution time and costs will rise exponentially.
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Hence, one of the testing principles states that exhaustive testing is not possible.
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Instead, we need the optimal amount of testing based on the risk assessment of the application.
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And the million dollar question is, how do you determine this risk?
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To answer this, let's do an exercise.
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In your opinion, which operation is most likely to cause your operating system to fail?
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I'm sure most of you would have guessed opening 10 heavy graphics applications all at the same time.
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So if you were testing this operating system, you would realize that defects are likely to be found in a multitasking module, and that needs to be tested thoroughly.
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Which brings us to our next principle, Defect Clustering, which states that a small number of modules contain most of the defects detected.
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With experience you can identify such risky modules.
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But this approach has its own problems.
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If the same tests are repeated over and over again, eventually the same test cases will no longer find new bugs.
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This is another principle of testing called pesticide paradox.
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To overcome this, the test cases need to be regularly reviewed and revised, adding new and different test cases to help find more defects.
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But even after all this sweat and hard work in testing, you can never claim your product is bug-free.
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To drive home this point, let's see this video of the public launch of Windows 98.
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Let's plug it in.
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It's going to say, hey, I see you plugged in a new device, and it's going to load in the appropriate drivers.
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You'll notice that this scanner build Whoa.
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Moving right along.
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That must be why we're not shipping Windows 98 yet.
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You would think a company like Microsoft would have tested their OS thoroughly
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and would not risk their reputation just to see their OS crashing during its public launch.
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Hence, the testing principle states that testing shows the presence of defects.
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Testing reduces the probability of undiscovered defects remaining in the software.
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But even if no defects are found, it is not a proof of correctness or a proof that no defects remain in the system.
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But what if you work extra hard, taking all precaution and making sure your software product is 99% bug-free
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and the software does not meet the needs and requirements of the client?
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Which leads us to our next principle, which states that absence of error is a fallacy.
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Finding and fixing defects does not help if the system build is unusable and does not fulfill the user's needs and requirements.
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To fix this problem, the next principle of testing, early testing, states that testing should start as early as possible in the software development lifecycle,
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so that any defects in the requirements or design phase are captured as well.
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We'll have more on this principle in a later tutorial.
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And the last principle of testing states that the testing is context dependent, which basically means
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that the way you test an e-commerce site will be different from the way you test a commercial off-the-shelf application.
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Before we close this tutorial, here's a quick recap of the seven testing principles.

Why Practice Speaking with This Video?

This video is a goldmine for IELTS speaking practice and shadow speech exercises. Its clear, conversational tone—mixing explanations, examples, and questions—mimics real-world discussions, helping you build fluency in technical and everyday contexts. By shadowing the speaker, you’ll improve pacing, intonation, and the ability to articulate complex ideas, all critical for IELTS success. The content’s structure (problem-solution, recaps) also trains you to follow and respond to logical arguments, a key speaking skill.

Grammar & Expressions in Context

  • Conditional structures: "If you were testing this operating system, you would realize..." Practicing these hypothetical forms helps with IELTS Part 3 questions.
  • Cause-effect phrases: "Hence one of the testing principles states..." This formal transition is perfect for linking ideas in speeches or essays.
  • Rhetorical questions: "The million dollar question is: How do you determine this risk?" Using these engages listeners, a trick to boost speaking scores.

Common Pronunciation Traps

Watch out for word stress in "exponentially" (ex-PO-nen-tial-ly) and "multitasking" (MUL-ti-task-ing)—misplacing stress can confuse listeners. The speaker also uses contractions like "it's" and "you'll" naturally; mimic these to sound more native. For shadow speech, focus on the rhythm of phrases like "the list is endless"—pausing slightly after "endless" emphasizes the point, a technique that elevates delivery.

Wat is de Shadowing-techniek?

Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.

Shadowing-techniek: lees de volledige stap-voor-stap-gids →