package service

import (
	"testing"

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

func TestSundaySearchFindsUnicodePatternAfterUnmatchedPrefix(t *testing.T) {
	require.True(t, SundaySearch("你好世界", "世界"))
}

func TestSundaySearchHandlesASCIIMatchesAndMisses(t *testing.T) {
	require.True(t, SundaySearch("prefix-target-suffix", "target"))
	require.False(t, SundaySearch("prefix-target-suffix", "missing"))
}

func TestRemoveDuplicatePreservesFirstOccurrenceOrder(t *testing.T) {
	require.Equal(t, []string{"a", "b", "c"}, RemoveDuplicate([]string{"a", "b", "a", "c", "b"}))
}