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string_test.go
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/
string_test.go
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package lo
import (
"math"
"testing"
"github.com/stretchr/testify/assert"
)
func TestSubstring(t *testing.T) {
is := assert.New(t)
str1 := Substring("hello", 0, 0)
str2 := Substring("hello", 10, 2)
str3 := Substring("hello", -10, 2)
str4 := Substring("hello", 0, 10)
str5 := Substring("hello", 0, 2)
str6 := Substring("hello", 2, 2)
str7 := Substring("hello", 2, 5)
str8 := Substring("hello", 2, 3)
str9 := Substring("hello", 2, 4)
str10 := Substring("hello", -2, 4)
str11 := Substring("hello", -4, 1)
str12 := Substring("hello", -4, math.MaxUint)
is.Equal("", str1)
is.Equal("", str2)
is.Equal("he", str3)
is.Equal("hello", str4)
is.Equal("he", str5)
is.Equal("ll", str6)
is.Equal("llo", str7)
is.Equal("llo", str8)
is.Equal("llo", str9)
is.Equal("lo", str10)
is.Equal("e", str11)
is.Equal("ello", str12)
}
func TestRuneLength(t *testing.T) {
is := assert.New(t)
is.Equal(5, RuneLength("hellô"))
is.Equal(6, len("hellô"))
}