package maximum_sliding_window

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestMaxSlidingWindow(t *testing.T) {
	tests := []struct {
		name string
		nums []int
		k    int
		want []int
	}{
		{
			name: "example 1",
			nums: []int{1, 3, -1, -3, 5, 3, 6, 7},
			k:    3,
			want: []int{3, 3, 5, 5, 6, 7},
		},
		{
			name: "example 2",
			nums: []int{1},
			k:    1,
			want: []int{1},
		},
		{
			name: "k equals length",
			nums: []int{4, 2, 7, 1},
			k:    4,
			want: []int{7},
		},
		{
			name: "all same",
			nums: []int{3, 3, 3, 3},
			k:    2,
			want: []int{3, 3, 3},
		},
		{
			name: "descending",
			nums: []int{5, 4, 3, 2, 1},
			k:    3,
			want: []int{5, 4, 3},
		},
		{
			name: "ascending",
			nums: []int{1, 2, 3, 4, 5},
			k:    3,
			want: []int{3, 4, 5},
		},
		{
			name: "negatives",
			nums: []int{-5, -3, -1, -2, -4},
			k:    2,
			want: []int{-3, -1, -1, -2},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			assert.Equal(t, tt.want, MaxSlidingWindow(tt.nums, tt.k))
		})
	}
}