The Evolution of Quality Assurance in the Tech Industry

Good old Quality Assurance (QA)! Software development is incomplete without this crucial process. Yet, have you paused to consider where it all began? How QA ha

Good old Quality Assurance (QA)! Software development is incomplete without this crucial process. Yet, have you paused to consider where it all began? How QA ha

Good old Quality Assurance (QA)! Software development is incomplete without this crucial process. Yet, have you paused to consider where it all began? How QA has evolved to be what it is today and it is much more than just finding bugs and fixing them? We’ll take you through the transformation of quality assurance in information technology, spotlighting key turning points and their influence on our current approach to tech development and testing.

QA as it was and is today

QA has been a cornerstone in the technology sector for many years. Its fundamental role is to ascertain that all tech products, including software and hardware, adhere to certain quality standards before they are introduced to the consumer. 

Over time, QA and even the QA engineer have undergone significant evolution, propelled by technological progress, shifting business requirements, and escalating customer expectations. 

The Genesis of QA

QA in the 1950s and 1960s

In the nascent stages of computing, during the 1950s and 1960s, quality assurance in information technology was a relatively straightforward process. Software applications were less intricate, and testing primarily revolved around checking if the software executed its intended tasks. At this juncture, QA was often relegated to the sidelines, and conducted post-development, with a primary focus on identifying and rectifying bugs.

The software developed during this time was less complex compared to today's applications. They were mostly command-line based, running on mainframe computers or early microcomputers. Examples include the IBM 704 FORTRAN (a scientific computation software), COBOL (used for business data processing), and early operating systems like OS/360.

Testing was a Manual Process

During this time, testing was a manual process and was often performed by the same individuals who wrote the code. The concept of a separate testing or QA team did not exist. Testing was largely a process of checking if the software performed its intended function and identifying and fixing bugs. Tools for automated testing were not available, and the process was labor-intensive and time-consuming.

The manual testing process steps were specified. The focus during this testing out period was more on debugging rather than systematic testing. Debugging was done using techniques like code reviews, dry runs (manually working through the program without a computer), and test runs (running the program on a computer with test data and checking the results).

QA evolved in the 1960s

The concept of QA as a separate discipline began to emerge in the late 1960s and early 1970s. This was a time when software development started to become more complex and structured, leading to the need for more systematic testing approaches. However, the tools and techniques used for QA during this period were still rudimentary compared to today's standards. The real evolution and sophistication of QA tools and methodologies began in the 1980s and 1990s with the advent of structured programming and the rise of automated testing.

The Emergence of Structured QA

QA in the 1970s

With software applications growing in complexity in the 1970s and 1980s, the demand for a more structured approach to QA became apparent. Structured programming and methodologies like the Waterfall and Spiral models came into the picture. These methodologies introduced the concept of distinct stages in the software development lifecycle, including a dedicated phase for testing. QA evolved into a separate discipline, leading to the formalization of the QA tester role.

• During this period, testing was still largely a manual process, but it became more systematic. 
• Testers would create detailed test plans and test cases based on the software requirements. 
• They would then manually execute these test cases and document the results. 
• The goal was not just to find and fix bugs, but to ensure that the software met the specified requirements and adhered to quality standards.

The Coming of Early Test Management and bug-tracking Tools

In terms of software tools, this era saw the introduction of some early test case management and bug-tracking tools. It also saw a bug toolkit. For instance, IBM introduced a defect-tracking system in the late 1970s. However, these tools were still quite basic compared to today's standards.

QA in the 1980s and 1990s

The 1980s also saw the introduction of some early automated software testing management tools. These tools were primarily used for regression testing - checking that existing functionality still worked after changes were made to the software. 

One example is the 'capture/replay' testing tools, which could record a series of user actions and then replay them on demand. This allowed testers to automate repetitive tasks and increased the efficiency of the testing process.

However, it wasn't until the 1990s that automated testing took off with gusto, with the introduction of more sophisticated tools and the rise of commercial software development. This period also saw a shift towards more iterative development methodologies, which further emphasized the importance of structured and systematic QA practices.

The Emergence of Automated Testing

The 1990s heralded significant technological advancements in automated testing QA, leading to the creation of more complex software applications. Manual testing became increasingly laborious and susceptible to errors. This period marked the advent of automated testing tools like WinRunner and QuickTest Professional. 

Automated testing facilitated more efficient and precise testing, particularly for large and intricate software systems.

What is Automated Testing?

What is automation testing in QA? Automated testing involves using software tools to run tests that check for specific expected outcomes. This not only speeds up the testing process but also increases its accuracy, as it eliminates the risk of human error.

Automated Testing Tools

Here are some automated software testing management tool: 

1. WinRunner

One of the earliest and most influential automated testing tools was WinRunner, introduced by Mercury Interactive in 1993. WinRunner scripting language was a GUI (Graphical User Interface) testing tool that allowed testers to record and playback user actions. It was widely used for functional and regression testing.

2. QuickTest Professional (QTP)

In 1998, Mercury Interactive introduced another influential tool, QuickTest Professional (QTP, now known as Micro Focus UFT). The QTP test tool was one of the first tools to use a scripting language to automate user actions. It allowed testers to write scripts in VBScript, which gave them more control over the testing process and made it possible to automate more complex test scenarios.