github.com/moby/docker@v26.1.3+incompatible/internal/sliceutil/sliceutil_test.go (about)

     1  package sliceutil_test
     2  
     3  import (
     4  	"net/netip"
     5  	"strconv"
     6  	"testing"
     7  
     8  	"github.com/docker/docker/internal/sliceutil"
     9  )
    10  
    11  func TestMap(t *testing.T) {
    12  	s := []int{1, 2, 3}
    13  	m := sliceutil.Map(s, func(i int) int { return i * 2 })
    14  	if len(m) != len(s) {
    15  		t.Fatalf("expected len %d, got %d", len(s), len(m))
    16  	}
    17  	for i, v := range m {
    18  		if expected := s[i] * 2; v != expected {
    19  			t.Fatalf("expected %d, got %d", expected, v)
    20  		}
    21  	}
    22  }
    23  
    24  func TestMap_TypeConvert(t *testing.T) {
    25  	s := []int{1, 2, 3}
    26  	m := sliceutil.Map(s, func(i int) string { return strconv.Itoa(i) })
    27  	if len(m) != len(s) {
    28  		t.Fatalf("expected len %d, got %d", len(s), len(m))
    29  	}
    30  	for i, v := range m {
    31  		if expected := strconv.Itoa(s[i]); v != expected {
    32  			t.Fatalf("expected %s, got %s", expected, v)
    33  		}
    34  	}
    35  }
    36  
    37  func TestMapper(t *testing.T) {
    38  	s := []string{"1.2.3.4", "fe80::1"}
    39  	mapper := sliceutil.Mapper(netip.MustParseAddr)
    40  	m := mapper(s)
    41  	if len(m) != len(s) {
    42  		t.Fatalf("expected len %d, got %d", len(s), len(m))
    43  	}
    44  	for i, v := range m {
    45  		if expected := netip.MustParseAddr(s[i]); v != expected {
    46  			t.Fatalf("expected %s, got %s", expected, v)
    47  		}
    48  	}
    49  }