byteio - zigzag_test.go

     1  package byteio
     2  
     3  import "testing"
     4  
     5  func TestZigZag(t *testing.T) {
     6  	for n, test := range [...]struct {
     7  		In  int64
     8  		Out uint64
     9  	}{
    10  		{0, 0},
    11  		{-1, 1},
    12  		{1, 2},
    13  		{-2, 3},
    14  		{2, 4},
    15  		{-9223372036854775807, 18446744073709551613},
    16  		{9223372036854775807, 18446744073709551614},
    17  	} {
    18  		if i := zigzag(test.In); i != test.Out {
    19  			t.Errorf("test %d.1: from %d expecting %d, got %d", n+1, test.In, test.Out, i)
    20  		}
    21  		if j := unzigzag(test.Out); j != test.In {
    22  			t.Errorf("test %d.2: from %d expecting %d, got %d", n+1, test.Out, test.In, j)
    23  		}
    24  	}
    25  }
    26