Write tests to check boundary cases for the maximum distance problem solution.

For testing boundary cases of the maximum distance problem, it is important to check:

• Empty input (no points)
• One point
• Two points
• Multiple points with the same coordinates
• The maximum possible number of points
• Points with negative coordinates

Example tests in Go:

package main

import (
	"testing"
)

func TestMaxDistance(t *testing.T) {
	tests := []struct {
		name   string
		points [][2]int
		want   float64
	}{
		{"empty input", nil, 0},
		{"single point", [][2]int{{0, 0}}, 0},
		{"two points", [][2]int{{0, 0}, {3, 4}}, 5},
		{"identical points", [][2]int{{1, 1}, {1, 1}, {1, 1}}, 0},
		{"negative coordinates", [][2]int{{-1, -1}, {2, 3}}, 5},
		// Add a test with a large number of points if needed
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := MaxDistance(tt.points)
			if got != tt.want {
				t.Errorf("MaxDistance() = %v, want %v", got, tt.want)
			}
		})
	}
}

// Example function to compute the maximum distance
func MaxDistance(points [][2]int) float64 {
	maxDist := 0.0
	for i := 0; i < len(points); i++ {
		for j := i + 1; j < len(points); j++ {
			dx := points[i][0] - points[j][0]
			dy := points[i][1] - points[j][1]
			dist := float64(dx*dx + dy*dy)
			if dist > maxDist {
				maxDist = dist
			}
		}
	}
	return maxDist
}

It is important to verify the correctness of the function with minimal and maximal input data, as well as in special cases (for example, when all points coincide).