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Testing Integer Partition Algorithm Implementation in javascript-algorithms

This test suite validates the integer partition algorithm implementation, which calculates the number of ways an integer can be expressed as a sum of positive integers. The tests verify correct partition counts for numbers 1 through 8, ensuring the algorithm produces expected mathematical sequences.

Test Coverage Overview

The test suite provides comprehensive coverage of the integer partition function across multiple input values.

Key areas tested include:

Base cases (numbers 1-3)
Mid-range values (4-6)
Higher values (7-8)
Known partition sequence validation

Implementation Analysis

The testing approach uses Jest’s describe/it pattern to organize test cases in a clear, readable structure.

Testing patterns include:

Sequential value testing
Expect/toBe assertion chains
Single test block with multiple assertions
Progressive complexity validation

Technical Details

Testing infrastructure includes:

Jest testing framework
ES6 import/export syntax
Relative path module resolution
Equality matcher assertions

Best Practices Demonstrated

The test suite exhibits several testing best practices:

Clear test case organization
Comprehensive value coverage
Consistent assertion pattern
Mathematical sequence verification
Efficient test structure with multiple assertions

trekhleb/javascript-algorithms

src/algorithms/math/integer-partition/__test__/integerPartition.test.js

            
import integerPartition from '../integerPartition';

describe('integerPartition', () => {
  it('should partition the number', () => {
    expect(integerPartition(1)).toBe(1);
    expect(integerPartition(2)).toBe(2);
    expect(integerPartition(3)).toBe(3);
    expect(integerPartition(4)).toBe(5);
    expect(integerPartition(5)).toBe(7);
    expect(integerPartition(6)).toBe(11);
    expect(integerPartition(7)).toBe(15);
    expect(integerPartition(8)).toBe(22);
  });
});