mirror of
https://github.com/samber/lo.git
synced 2025-10-31 19:43:08 +08:00
99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
package lo
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import (
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"math"
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"math/rand"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestRandomString(t *testing.T) {
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t.Parallel()
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is := assert.New(t)
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rand.Seed(time.Now().UnixNano())
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str1 := RandomString(100, LowerCaseLettersCharset)
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is.Equal(100, RuneLength(str1))
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is.Subset(LowerCaseLettersCharset, []rune(str1))
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str2 := RandomString(100, LowerCaseLettersCharset)
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is.NotEqual(str1, str2)
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noneUtf8Charset := []rune("明1好休2林森")
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str3 := RandomString(100, noneUtf8Charset)
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is.Equal(100, RuneLength(str3))
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is.Subset(noneUtf8Charset, []rune(str3))
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is.PanicsWithValue("lo.RandomString: Charset parameter must not be empty", func() { RandomString(100, []rune{}) })
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is.PanicsWithValue("lo.RandomString: Size parameter must be greater than 0", func() { RandomString(0, LowerCaseLettersCharset) })
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}
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func TestChunkString(t *testing.T) {
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t.Parallel()
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is := assert.New(t)
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result1 := ChunkString("12345", 2)
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is.Equal([]string{"12", "34", "5"}, result1)
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result2 := ChunkString("123456", 2)
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is.Equal([]string{"12", "34", "56"}, result2)
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result3 := ChunkString("123456", 6)
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is.Equal([]string{"123456"}, result3)
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result4 := ChunkString("123456", 10)
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is.Equal([]string{"123456"}, result4)
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result5 := ChunkString("", 2)
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is.Equal([]string{""}, result5)
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result6 := ChunkString("明1好休2林森", 2)
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is.Equal([]string{"明1", "好休", "2林", "森"}, result6)
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is.Panics(func() {
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ChunkString("12345", 0)
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})
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}
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func TestSubstring(t *testing.T) {
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t.Parallel()
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is := assert.New(t)
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str1 := Substring("hello", 0, 0)
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str2 := Substring("hello", 10, 2)
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str3 := Substring("hello", -10, 2)
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str4 := Substring("hello", 0, 10)
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str5 := Substring("hello", 0, 2)
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str6 := Substring("hello", 2, 2)
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str7 := Substring("hello", 2, 5)
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str8 := Substring("hello", 2, 3)
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str9 := Substring("hello", 2, 4)
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str10 := Substring("hello", -2, 4)
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str11 := Substring("hello", -4, 1)
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str12 := Substring("hello", -4, math.MaxUint)
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is.Equal("", str1)
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is.Equal("", str2)
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is.Equal("he", str3)
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is.Equal("hello", str4)
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is.Equal("he", str5)
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is.Equal("ll", str6)
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is.Equal("llo", str7)
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is.Equal("llo", str8)
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is.Equal("llo", str9)
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is.Equal("lo", str10)
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is.Equal("e", str11)
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is.Equal("ello", str12)
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}
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func TestRuneLength(t *testing.T) {
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t.Parallel()
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is := assert.New(t)
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is.Equal(5, RuneLength("hellô"))
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is.Equal(6, len("hellô"))
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}
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