Numeric Comparisons

/**
 * Asserts that the reference value is greater than provided value
 * @param {number} value - Value to compare against
 * @returns {Assertion} Assertion chain object for further chaining
 */
above(value)

greaterThan()

const Code = require('@hapi/code');
const expect = Code.expect;

expect(10).to.be.above(5);
expect(3.14).to.be.above(3);
expect(-1).to.be.above(-5);

// With aliases
expect(100).to.be.greaterThan(50);

// Chaining
expect(userAge).to.be.a.number().and.be.above(18);

/**
 * Asserts that the reference value is at least (>=) provided value
 * @param {number} value - Minimum value
 * @returns {Assertion} Assertion chain object for further chaining
 */
least(value)

min()

expect(10).to.be.at.least(10); // Equal is allowed
expect(15).to.be.at.least(10); // Greater is allowed
expect(18).to.be.at.min(18);   // Using alias

// Age validation
expect(userAge).to.be.at.least(21);

/**
 * Asserts that the reference value is less than provided value
 * @param {number} value - Value to compare against
 * @returns {Assertion} Assertion chain object for further chaining
 */
below(value)

lessThan()

expect(5).to.be.below(10);
expect(-10).to.be.below(-5);
expect(2.5).to.be.lessThan(3);

// Performance testing
const executionTime = measureTime();
expect(executionTime).to.be.below(1000); // Less than 1 second

/**
 * Asserts that the reference value is at most (<=) provided value
 * @param {number} value - Maximum value
 * @returns {Assertion} Assertion chain object for further chaining
 */
most(value)

max()

expect(10).to.be.at.most(10); // Equal is allowed
expect(5).to.be.at.most(10);  // Less is allowed
expect(100).to.be.at.max(100); // Using alias

// Resource limits
expect(memoryUsage).to.be.at.most(1024);

/**
 * Asserts that the reference value is within range (inclusive)
 * @param {number} from - Lower bound (inclusive)
 * @param {number} to - Upper bound (inclusive)
 * @returns {Assertion} Assertion chain object for further chaining
 */
within(from, to)

range()

expect(5).to.be.within(1, 10);     // 1 <= 5 <= 10
expect(1).to.be.within(1, 10);     // Lower bound inclusive
expect(10).to.be.within(1, 10);    // Upper bound inclusive

// Using alias
expect(score).to.be.in.range(0, 100);

// Temperature validation
expect(temperature).to.be.within(-10, 40);

/**
 * Asserts that the reference value is between values (exclusive)
 * @param {number} from - Lower bound (exclusive)
 * @param {number} to - Upper bound (exclusive)
 * @returns {Assertion} Assertion chain object for further chaining
 */
between(from, to)

expect(5).to.be.between(1, 10);    // 1 < 5 < 10
expect(1).to.not.be.between(1, 10); // Lower bound exclusive
expect(10).to.not.be.between(1, 10); // Upper bound exclusive

// Exclusive range checking
const percentage = calculatePercentage();
expect(percentage).to.be.between(0, 100); // 0 < percentage < 100

/**
 * Asserts that the reference value is approximately equal within delta
 * @param {number} value - Target value
 * @param {number} delta - Maximum allowed difference
 * @returns {Assertion} Assertion chain object for further chaining
 */
about(value, delta)

expect(10).to.be.about(9, 1);     // |10 - 9| <= 1
expect(3.14159).to.be.about(3.14, 0.01); // Floating point comparison
expect(100).to.be.about(95, 10);  // Within 10 units

// Floating point calculations
const result = 0.1 + 0.2; // JavaScript floating point issues
expect(result).to.be.about(0.3, 0.0001);

// Performance measurements with tolerance
const actualTime = measureExecutionTime();
const expectedTime = 500; // 500ms
expect(actualTime).to.be.about(expectedTime, 50); // ±50ms tolerance

const Code = require('@hapi/code');
const expect = Code.expect;

// Multiple constraints
expect(userAge)
    .to.be.a.number()
    .and.be.above(0)
    .and.be.at.most(150);

// Range validation with multiple approaches
const score = getTestScore();
expect(score)
    .to.be.a.number()
    .and.be.within(0, 100)
    .and.not.be.about(0, 5); // Not too close to zero

// Performance testing
const startTime = Date.now();
performOperation();
const duration = Date.now() - startTime;

expect(duration)
    .to.be.a.number()
    .and.be.above(0)
    .and.be.below(1000)    // Less than 1 second
    .and.be.about(expectedDuration, 100); // Within expected range

// Validate all numbers in range
const temperatures = [-5, 0, 15, 23, 35];
temperatures.forEach(temp => {
    expect(temp).to.be.within(-50, 50);
});

// Statistical validation
const scores = [85, 92, 78, 95, 88];
const average = scores.reduce((a, b) => a + b) / scores.length;

expect(average).to.be.above(80).and.be.below(100);
scores.forEach(score => {
    expect(score).to.be.above(0).and.be.at.most(100);
});

// Avoid exact equality for floating point
const result = Math.sqrt(2) * Math.sqrt(2);
expect(result).to.not.equal(2); // Might fail due to precision
expect(result).to.be.about(2, 0.0001); // Better approach

// Scientific calculations
const pi = Math.PI;
const calculatedPi = calculatePiApproximation();
expect(calculatedPi).to.be.about(pi, 0.001);

// Currency calculations (use integers to avoid floating point issues)
const priceInCents = 1050; // $10.50
expect(priceInCents).to.be.above(1000).and.be.below(2000);

// Test edge cases
const minValue = Number.MIN_SAFE_INTEGER;
const maxValue = Number.MAX_SAFE_INTEGER;

expect(minValue).to.be.below(0);
expect(maxValue).to.be.above(0);

// Infinity handling
expect(Infinity).to.be.above(1000000);
expect(-Infinity).to.be.below(-1000000);

// Zero boundaries
expect(0).to.be.at.least(0);
expect(0).to.be.at.most(0);
expect(1).to.be.above(0);
expect(-1).to.be.below(0);