github.com/Bytom/bytom@v1.1.2-0.20210127130405-ae40204c0b09/p2p/external_ip_test.go (about)

     1  package p2p
     2  
     3  import (
     4  	"regexp"
     5  	"testing"
     6  )
     7  
     8  func TestExternalIPv4(t *testing.T) {
     9  	// Regular expression format for IPv4
    10  	IPv4Format := `\.\d{1,3}\.\d{1,3}\b`
    11  	test, err := ExternalIPv4()
    12  
    13  	if err != nil {
    14  		t.Errorf("Test check external ipv4 failed with %v", err)
    15  	}
    16  
    17  	valid := regexp.MustCompile(IPv4Format)
    18  
    19  	if !valid.MatchString(test) {
    20  		t.Errorf("Wanted: %v, got: %v", IPv4Format, test)
    21  	}
    22  }