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Keywords Concept

Keywords are the core building blocks of Robot Framework. They enable the keyword-driven testing approach that makes Robot Framework readable, reusable, and scalable.

What Is a Keyword?​

A keyword represents a single action or logical operation.

Examples:

  • Open Browser
  • Click Button
  • Validate Response Status
  • Login To Application

Keywords allow test cases to read like plain English steps.

Types of Keywords​

Robot Framework supports multiple types of keywords.

1. Built-in Keywords​

Provided by Robot Framework itself.

Examples:

  • Log
  • Set Variable
  • Run Keyword If
  • Should Be Equal

2. Library Keywords​

Provided by external libraries.

Examples:

  • SeleniumLibrary → Click Element
  • RequestsLibrary → POST On Session
  • DatabaseLibrary → Query

3. User-Defined Keywords​

Created by users to encapsulate logic.

Defined under:

*** Keywords ***

Used to:

  • Reduce duplication
  • Improve readability
  • Centralize logic

Example: User-Defined Keyword​

*** Keywords ***
Login To Application
    Open Browser    https://example.com    chrome
    Input Text     username    admin
    Input Text     password    secret
    Click Button   login

Used in test cases:

*** Test Cases ***
Valid Login
    Login To Application

Keyword-Driven Testing Philosophy​

  • Test cases describe what happens
  • Keywords define how it happens
  • Libraries perform the actual automation

This separation improves maintainability.

When to Create a Keyword​

Create a keyword when:

  • Logic is reused
  • Steps become lengthy
  • Business intent needs clarity

Avoid creating keywords for:

  • Single-use trivial steps
  • Over-fragmentation

Keyword Naming Best Practices​

  • Use meaningful names
  • Use spaces (Robot style)
  • Reflect business intent

❌ Bad: KW_01_Login ✅ Good: Login To Application

Common Mistakes ❌​

  • Writing everything directly in test cases
  • Creating too many tiny keywords
  • Mixing validation and action logic carelessly

Best Practices ✅​

  • One keyword = one responsibility
  • Keep keywords readable
  • Reuse across suites
  • Store reusable keywords in resource files

Key Takeaways​

  • Keywords drive Robot Framework
  • Three types: built-in, library, user-defined
  • User-defined keywords improve reuse
  • Clean keyword design is essential