package store

import "testing"

func TestPageFilterNormalize(t *testing.T) {
	tests := []struct {
		name         string
		in           PageFilter
		wantPage     int
		wantPageSize int
		wantOffset   int
	}{
		{name: "defaults", in: PageFilter{}, wantPage: 1, wantPageSize: 20, wantOffset: 0},
		{name: "negative", in: PageFilter{Page: -1, PageSize: -5}, wantPage: 1, wantPageSize: 20, wantOffset: 0},
		{name: "page2", in: PageFilter{Page: 2, PageSize: 10}, wantPage: 2, wantPageSize: 10, wantOffset: 10},
		{name: "zero page size", in: PageFilter{Page: 3, PageSize: 0}, wantPage: 3, wantPageSize: 20, wantOffset: 40},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			p := tt.in
			p.Normalize()
			if p.Page != tt.wantPage || p.PageSize != tt.wantPageSize {
				t.Fatalf("Normalize() = %+v, want page=%d page_size=%d", p, tt.wantPage, tt.wantPageSize)
			}
			if got := p.Offset(); got != tt.wantOffset {
				t.Fatalf("Offset() = %d, want %d", got, tt.wantOffset)
			}
		})
	}
}