Kotlin For Testers training course

Introduction

• Overview of Kotlin
  • History and features of Kotlin
  • Advantages of using Kotlin for testing
  • Setting up the Kotlin environment

Your First Program in Kotlin

• Writing a "Hello, World!" program
• Understanding the structure of a Kotlin program
• Running and debugging Kotlin code

Basic Kotlin Values, Types, and Literals

• Variables and constants
  • val vs var
• Common data types (Int, String, Boolean, etc.)
• Type inference
• Basic literals (numbers, characters, strings)

Conditional Statements

• If-else statements
• When expression
• Conditional expressions

Functions

• Defining and calling functions
  • Syntax and structure
• Function parameters and return types
• Default and named arguments

For-loop

• Iterating over ranges, arrays, and collections
• Using indices and withIndex()

Nullability

• Nullable types
  • Declaring nullable variables
• Safe calls and the Elvis operator
• Not-null assertion

Classes

• Defining classes and creating objects
• Constructors and initializer blocks
• Properties and methods

Inheritance

• Basic concepts of inheritance
• Extending classes
• Overriding methods and properties

Data Classes

• Defining and using data classes
• Auto-generated functions (toString, equals, hashCode, copy)

Exceptions

• Exception handling (try-catch-finally)
• Throwing exceptions
• Custom exceptions

Enums

• Defining and using enum classes
• Enum constants and properties

Sealed Classes

• Defining sealed classes
• Using sealed classes for representing restricted class hierarchies

Object Expression, Object Declaration, and Companion Object

• Creating singletons with object expressions and declarations
• Using companion objects for factory methods and static members

Type System

• Understanding Kotlin's type system
• Type casting (safe and unsafe)
• Smart casts

Extension Functions

• Defining and using extension functions
• Extension properties

Functional Programming in Kotlin

• Basics of functional programming
• Higher-order functions and lambdas

Lambda Expressions and Function Types

• Defining and using lambda expressions
• Function types and type aliases

Inline Functions

• Understanding inline functions
• Benefits and use cases

Function References

• Using function references for higher-order functions
• Member and extension references

Functional Collection Processing

• Processing collections with functional methods (map, filter, reduce, etc.)
• Transformations and aggregations

Scope Functions

• Overview of scope functions (let, run, with, apply, also)
• Use cases and best practices

Interoperability Between Kotlin and Java

• Calling Java code from Kotlin
• Calling Kotlin code from Java
• Handling nullability and SAM conversions

Rules of the Idiomatic Kotlin

• Writing clean and idiomatic Kotlin code
• Common conventions and best practices
• Avoiding common pitfalls