Anatomy of an Espresso Test Shown below, is a simplified Espresso test flow. Launch the test execution using AndroidJUnit4 runner class Launch the app UI using ActivityTestRule class Locate the UI element on which an user input action or a validation needs to be done using Espresso, ViewInteraction and ViewMatchers…

Introduction of Espresso: There is a popular adage among android app developers which goes You don’t test android. Android tests you. For Android developers to write UI tests, they must be convinced that benefits of those test must outweigh the effort spent in building those tests. Google, being the proprietor…

Continuation of SOLID Principles…..Part-1-https://app-devops.medium.com/solid-principles-part-1-67b244fbac06 4. Interface Segregation Principle The Interface Segregation Principle (ISP) states that clients should not be forced to depend upon interface members they do not use. When we have non-cohesive interfaces, the ISP guides us to create multiple, smaller, cohesive interfaces. When you apply ISP, classes and their dependencies communicate using…

SOLID refers to five design principles in object-oriented programming, designed to reduce code rot and improve the value, function, and maintainability of software. The SOLID principles help the user develop less coupled code. If code is tightly coupled, a group of classes are dependent on one another. …

Imperative Approach: Imperative programming focuses on how to perform a task. It places a greater emphasis on how the operations are carried out rather than what procedures are carried out. The prototype of an app’s UI will be independent(separate) in imperative UI programming. Examples of imperative approaches: XML layouts in…

Introduction Kotlin is a language that adds many fresh features to allow the writing of cleaner, easier-to-read code. This, in turn, makes our code significantly easier to maintain and allows for a better end result from our development. Infix notation is one of such features. What Is an Infix Notation? …

Definition: A function which can accepts a function as parameter or can returns a function is called Higher-Order function. Instead of Integer, String or Array as a parameter to function, we will pass anonymous function or lambdas. What is () -> unit in Kotlin? The Unit type in Kotlin is…

Volatile keyword is used to modify the value of a variable by different threads. It is also used to make classes thread safe. Case 1: class MyObject { // Changes made to currentAction in one thread // may not immediately reflect in other thread static int currentAction = 5; } …

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