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Testing Recursive Staircase Algorithm Implementation in javascript-algorithms

This test suite validates the recursive staircase algorithm implementation using a brute force approach. It verifies the calculation of possible ways to climb stairs for various step counts, following the Fibonacci sequence pattern.

Test Coverage Overview

The test suite provides comprehensive coverage of the recursiveStaircaseBF function across multiple input scenarios.

Key areas tested include:

Edge cases with negative and zero inputs
Base cases (1-2 steps)
Progressive sequence validation up to 10 steps
Fibonacci sequence pattern verification

Implementation Analysis

The testing approach employs Jest’s describe/it pattern to structure the test cases systematically. The implementation uses expect().toBe() assertions to verify exact numeric outputs, ensuring precise validation of the brute force recursive solution.

Technical patterns include:

Single test block architecture
Sequential test case progression
Direct numeric comparisons

Technical Details

Testing infrastructure includes:

Jest testing framework
ES6 module import syntax
Numeric assertion methods
Describe/It block structure

Best Practices Demonstrated

The test suite exemplifies several testing best practices for algorithm validation.

Notable practices include:

Comprehensive edge case coverage
Progressive complexity testing
Clear test case organization
Consistent assertion pattern usage
Mathematical sequence verification

trekhleb/javascript-algorithms

src/algorithms/uncategorized/recursive-staircase/__test__/recursiveStaircaseBF.test.js

            
import recursiveStaircaseBF from '../recursiveStaircaseBF';

describe('recursiveStaircaseBF', () => {
  it('should calculate number of variants using Brute Force solution', () => {
    expect(recursiveStaircaseBF(-1)).toBe(0);
    expect(recursiveStaircaseBF(0)).toBe(0);
    expect(recursiveStaircaseBF(1)).toBe(1);
    expect(recursiveStaircaseBF(2)).toBe(2);
    expect(recursiveStaircaseBF(3)).toBe(3);
    expect(recursiveStaircaseBF(4)).toBe(5);
    expect(recursiveStaircaseBF(5)).toBe(8);
    expect(recursiveStaircaseBF(6)).toBe(13);
    expect(recursiveStaircaseBF(7)).toBe(21);
    expect(recursiveStaircaseBF(8)).toBe(34);
    expect(recursiveStaircaseBF(9)).toBe(55);
    expect(recursiveStaircaseBF(10)).toBe(89);
  });
});