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Source file src/runtime/pprof/internal/profile/proto_test.go

Documentation: runtime/pprof/internal/profile

     1  package profile
     2  
     3  import (
     4  	"reflect"
     5  	"testing"
     6  )
     7  
     8  func TestPackedEncoding(t *testing.T) {
     9  
    10  	type testcase struct {
    11  		uint64s []uint64
    12  		int64s  []int64
    13  		encoded []byte
    14  	}
    15  	for i, tc := range []testcase{
    16  		{
    17  			[]uint64{0, 1, 10, 100, 1000, 10000},
    18  			[]int64{1000, 0, 1000},
    19  			[]byte{10, 8, 0, 1, 10, 100, 232, 7, 144, 78, 18, 5, 232, 7, 0, 232, 7},
    20  		},
    21  		{
    22  			[]uint64{10000},
    23  			nil,
    24  			[]byte{8, 144, 78},
    25  		},
    26  		{
    27  			nil,
    28  			[]int64{-10000},
    29  			[]byte{16, 240, 177, 255, 255, 255, 255, 255, 255, 255, 1},
    30  		},
    31  	} {
    32  		source := &packedInts{tc.uint64s, tc.int64s}
    33  		if got, want := marshal(source), tc.encoded; !reflect.DeepEqual(got, want) {
    34  			t.Errorf("failed encode %d, got %v, want %v", i, got, want)
    35  		}
    36  
    37  		dest := new(packedInts)
    38  		if err := unmarshal(tc.encoded, dest); err != nil {
    39  			t.Errorf("failed decode %d: %v", i, err)
    40  			continue
    41  		}
    42  		if got, want := dest.uint64s, tc.uint64s; !reflect.DeepEqual(got, want) {
    43  			t.Errorf("failed decode uint64s %d, got %v, want %v", i, got, want)
    44  		}
    45  		if got, want := dest.int64s, tc.int64s; !reflect.DeepEqual(got, want) {
    46  			t.Errorf("failed decode int64s %d, got %v, want %v", i, got, want)
    47  		}
    48  	}
    49  }
    50  
    51  type packedInts struct {
    52  	uint64s []uint64
    53  	int64s  []int64
    54  }
    55  
    56  func (u *packedInts) decoder() []decoder {
    57  	return []decoder{
    58  		nil,
    59  		func(b *buffer, m message) error { return decodeUint64s(b, &m.(*packedInts).uint64s) },
    60  		func(b *buffer, m message) error { return decodeInt64s(b, &m.(*packedInts).int64s) },
    61  	}
    62  }
    63  
    64  func (u *packedInts) encode(b *buffer) {
    65  	encodeUint64s(b, 1, u.uint64s)
    66  	encodeInt64s(b, 2, u.int64s)
    67  }
    68  

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