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Alpha TestingAlpha testing is the initial end-to-end testing of a product to confirm that it fulfils company requirements and performs properly. It is often carried out by staff members in a lab/stage setting. An alpha test confirms that the product actually functions and performs what it is designed to do. Although "unit testing" and "smoke testing" of various individual features and functionalities may have occurred during the development cycle, an alpha test is the first chance to monitor the efficiency and overall functioning of a specific product launch.The major distinction between an alpha test and a beta test is that ... Read More
Adhoc testing is frequently carried out to break the system in unusual ways. Adhoc testing's most remarkable aspect is that it lacks any test design approach for creating test cases.The procedure is generally used to identify software flaws. Because adhoc testing lacks test cases, it is often carried out without documentation.Take a closer look at the procedure. Ad-Hoc testing is a kind of testing that comes under the category of 'Unstructured Testing.'Structured Testing Vs. Unstructured TestingStructuredTesting − Everything that happens throughout the testing method, from the development of test cases to their sequential execution, is written in this technique. This ... Read More
What is a Test Script, and how does it work?Test scripts are a line-by-line description of the system transactions that must be done in order to verify the application or system under test. Each step should be included in the test script, along with the intended outcomes.Test scripts are a line-by-line list of all the activities that must be performed and tested on various user journeys. It lays down each action to be followed, along with the intended outcomes. The testers may then test each step on a variety of devices in a methodical manner. Scenario testing is defined as ... Read More
Testing is the process of running software and looking for flaws. Our program must be error-free in order to work effectively. If the testing is completed successfully, the program will be free of any faults.Testing PrinciplesAll tests must satisfy the customer's needs.To make our software testing more efficient, we should use a third party.It is impossible to do exhaustive testing. We need the optimum quantity of testing depending on the application's risk assessment.All tests that will be undertaken should be prepared before they are carried out.It adheres to the Pareto rule (80/20 rule), which claims that 80% of software mistakes ... Read More
In software testing, what is the difference between verification and validation?The phrases "verification" and "validation" are regularly used in the context of testing. Most of the time, we mistakenly confuse the two words, although they are really extremely distinct.V&V (Verification & Validation) assignments are divided into two categories −Conforms to specifications (Producer view of quality)Suitable for usage (consumers view of quality)Simply put, the developer's impression of the completed product is referred to as the producer's view of quality.The user's perspective of the completed product is referred to as consumer perception quality.When doing V&V duties, we must keep both of these ... Read More
For a continuous-time function $\mathit{x(t)}$, the Fourier transform of $\mathit{x(t)}$ can be defined as$$\mathrm{\mathit{X\left ( \omega \right )\mathrm{\mathrm{=}}\int_{-\infty }^{\infty }x\left ( t \right )e^{-j\omega t}dt}}$$And the inverse Fourier transform is defined as, $$\mathrm{\mathit{F^{\mathrm{-1}}\left [ X\left ( \omega \right ) \right ]\mathrm{\mathrm{=}}x\left ( t \right )\mathrm{\mathrm{=}}\frac{\mathrm{1}}{\mathrm{2}\pi }\int_{-\infty }^{\infty }X\left ( \omega \right )e^{j\omega t}d\omega }}$$Multiplication Property of Fourier TransformStatement – The multiplication property of continuous-time Fourier transform (CTFT) states that the multiplication of two functions in time domain is equivalent to the convolution of their spectra in the frequency domain. The multiplication property is also called frequency convolution theorem of Fourier ... Read More
If the canvas looks distorted, then try to change the height and width −The default height and width of the canvas in HTML5 is of 2/1 ratio −width = 300 height = 150ExampleLet us see an example − #mycanvas{border:1px solid red;} Output
The HTML5 tag is used to draw graphics, animations, etc. using scripting. It is a new tag introduced in HTML5. Use the lineTo() method to draw lines using HTML5 canvas.You can try to run the following code to learn how to draw lines using HTML5 Canvas Example HTML5 Canvas Tag var c = document.getElementById('newCanvas'); var ctx = c.getContext('2d'); // Drawing lines ctx.beginPath(); ctx.moveTo(30, 30); ctx.lineTo(180, 100); ctx.moveTo(30, 10); ctx.lineTo(260, 100); ctx.stroke(); Output
You can try to run the following code to draw an oval in HTML5 canvas −Example // canvas var c = document.getElementById('newCanvas'); var context = c.getContext('2d'); var cX = 0; var cY = 0; var radius = 40; context.save(); context.translate(c.width / 2, c.height / 2); context.scale(2, 1); context.beginPath(); context.arc(cX, cY, radius, 0, 2 * Math.PI, false); context.restore(); context.fillStyle = '#000000'; context.fill(); context.lineWidth = 2; context.strokeStyle = 'yellow'; context.stroke(); Output
The Text widget accepts multiline user input, where you can type text and perform operations like copying, pasting, and deleting. There are certain ways to disable the shortcuts for various operations on a Text widget.In order to disable copy, paste and backspace in a Text widget, you’ve to bind the event with an event handler and return break using lambda keyword in python. The following example demonstrates how it works.Example# Import the required library from tkinter import * # Create an instance of tkinter frame or widget win=Tk() win.geometry("700x350") # Create a text widget text=Text(win, font="Calibri, 14") text.pack(fill= ... Read More