File: util_test.go

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package util

import (
	"testing"

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

func TestStringWidth(t *testing.T) {
	bytes := []byte("\tPot să \tmănânc sticlă și ea nu mă rănește.")

	n := StringWidth(bytes, 23, 4)
	assert.Equal(t, 26, n)
}

func TestSliceVisualEnd(t *testing.T) {
	s := []byte("\thello")
	slc, n, _ := SliceVisualEnd(s, 2, 4)
	assert.Equal(t, []byte("\thello"), slc)
	assert.Equal(t, 2, n)

	slc, n, _ = SliceVisualEnd(s, 1, 4)
	assert.Equal(t, []byte("\thello"), slc)
	assert.Equal(t, 1, n)

	slc, n, _ = SliceVisualEnd(s, 4, 4)
	assert.Equal(t, []byte("hello"), slc)
	assert.Equal(t, 0, n)

	slc, n, _ = SliceVisualEnd(s, 5, 4)
	assert.Equal(t, []byte("ello"), slc)
	assert.Equal(t, 0, n)
}