package swag

import (
	"testing"

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

func TestSplitter(t *testing.T) {
	s := newSplitter(withPostSplitInitialismCheck)

	t.Run("should return an empty slice of lexems", func(t *testing.T) {
		lexems := s.split("")
		poolOfLexems.RedeemLexems(lexems)

		require.NotNil(t, lexems)
		require.Empty(t, lexems)
	})
}

func TestIsEqualFoldIgnoreSpace(t *testing.T) {
	t.Run("should find equal", func(t *testing.T) {
		require.True(t, isEqualFoldIgnoreSpace([]rune(""), ""))
		require.True(t, isEqualFoldIgnoreSpace([]rune(""), "  "))

		require.True(t, isEqualFoldIgnoreSpace([]rune("A"), " a"))
		require.True(t, isEqualFoldIgnoreSpace([]rune("A"), "a "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("A"), " a "))

		require.True(t, isEqualFoldIgnoreSpace([]rune("A"), "\ta\t"))
		require.True(t, isEqualFoldIgnoreSpace([]rune("A"), "a"))
		require.True(t, isEqualFoldIgnoreSpace([]rune("A"), "\u00A0a\u00A0"))

		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), " ab"))
		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), "ab "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), " ab "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), " ab "))

		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), " AB"))
		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), "AB "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), " AB "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("AB"), " AB "))

		require.True(t, isEqualFoldIgnoreSpace([]rune("À"), " à"))
		require.True(t, isEqualFoldIgnoreSpace([]rune("À"), "à "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("À"), " à "))
		require.True(t, isEqualFoldIgnoreSpace([]rune("À"), " à "))
	})

	t.Run("should find different", func(t *testing.T) {
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), ""))
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), ""))
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), " b "))
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), " b "))

		require.False(t, isEqualFoldIgnoreSpace([]rune("AB"), " A B "))
		require.False(t, isEqualFoldIgnoreSpace([]rune("AB"), " a b "))
		require.False(t, isEqualFoldIgnoreSpace([]rune("AB"), " AB \u00A0\u00A0x"))
		require.False(t, isEqualFoldIgnoreSpace([]rune("AB"), " AB \u00A0\u00A0é"))

		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), ""))
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), ""))
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), " b "))
		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), " b "))

		require.False(t, isEqualFoldIgnoreSpace([]rune("A"), " à"))
		require.False(t, isEqualFoldIgnoreSpace([]rune("À"), " bà"))
		require.False(t, isEqualFoldIgnoreSpace([]rune("À"), "àb "))
		require.False(t, isEqualFoldIgnoreSpace([]rune("À"), " a "))
		require.False(t, isEqualFoldIgnoreSpace([]rune("À"), "Á"))
	})
}