package sliceutil

import (
	"reflect"
	"sort"
	"testing"
)

func TestUnique(t *testing.T) {
	tests := []struct {
		Name string
		Test []string
		Want []string
	}{
		{"nil", nil, nil},
		{"single", []string{"test"}, []string{"test"}},
		{"duplicate", []string{"test", "test"}, []string{"test"}},
		{"multiple", []string{"a", "a", "b", "b", "b", "c"}, []string{"a", "b", "c"}},
	}
	for _, test := range tests {
		t.Run(test.Name, func(it *testing.T) {
			v := Unique(test.Test)
			if v != nil {
				sort.Strings(v)
			}
			if !reflect.DeepEqual(v, test.Want) {
				it.Errorf("expected unique(%v) to return %v, got %v", test.Test, test.Want, v)
			}
		})
	}
}