New Features

Collection Assertions

• ContainsInOrder(seq) - validates elements appear in order (gaps allowed)
• ContainsInConsecutiveOrder(seq) - validates elements appear consecutively (no gaps)
• IsSubsetOf(superset) - validates collection is a subset
• IsSupersetOf(subset) - validates collection is a superset
• Intersects(other) - validates collections share at least one element
• Satisfies(p1, p2, ...) - validates elements satisfy predicates with unique 1:1 matching (bipartite matching)

Proximity Assertions

• BeCloseTo(target, tolerance) - validates numeric values within tolerance
• BeApproximately(target, tolerance) - alias for BeCloseTo
• BeCloseTo(expected, TimeSpan) - validates DateTime/DateTimeOffset within tolerance

IsEquivalentTo Enhancements

• Full feature parity with FluentAssertions configuration options

Usage

using SharpAssert.Features.Collections;
using SharpAssert.Features.Proximity;

// Collection assertions
Assert(coll.ContainsInOrder(1, 3, 5));
Assert(coll.ContainsInConsecutiveOrder(2, 3, 4));
Assert(coll.IsSubsetOf(superset));
Assert(coll.IsSupersetOf(subset));
Assert(coll.Intersects(other));
Assert(users.Satisfies(u => u.Age > 18, u => u.IsAdmin));

// Proximity assertions
Assert(value.BeCloseTo(target, 0.01));
Assert(value.BeApproximately(pi, 0.001));
Assert(dt.BeCloseTo(expected, TimeSpan.FromMilliseconds(100)));

Full Changelog: v1.2.0...v1.3.0