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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package varint | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "math" | ||
| "math/big" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestEnc2BigInt(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| genData := func(v int64) []byte { | ||
| data := []byte{byte(v >> 56), byte(v >> 48), byte(v >> 40), byte(v >> 32), byte(v >> 24), byte(v >> 16), byte(v >> 8), byte(v)} | ||
| out := make([]byte, 0) | ||
| add := false | ||
|
|
||
| for i, b := range data { | ||
| if !add { | ||
| if v < 0 { | ||
| if b != 255 || b == 255 && data[i+1] < 128 { | ||
| add = true | ||
| } else { | ||
| continue | ||
| } | ||
| } else { | ||
| if b != 0 || b == 0 && data[i+1] > 127 { | ||
| add = true | ||
| } else { | ||
| continue | ||
| } | ||
| } | ||
| } | ||
| out = append(out, b) | ||
| } | ||
|
|
||
| return out | ||
| } | ||
|
|
||
| t.Run("positive", func(t *testing.T) { | ||
| t.Parallel() | ||
| for i := int64(math.MaxInt16); i < 1<<24; i++ { | ||
| expected := genData(i) | ||
|
|
||
| received := EncBigIntRS(big.NewInt(i)) | ||
| if !bytes.Equal(expected, received) { | ||
| t.Fatalf("%d\nexpected:%x\nreceived:%x", i, expected, received) | ||
| } | ||
|
|
||
| received = encInt64(i) | ||
| if !bytes.Equal(expected, received) { | ||
| t.Fatalf("%d\nexpected:%x\nreceived:%x", i, expected, received) | ||
| } | ||
| } | ||
| }) | ||
|
|
||
| t.Run("negative", func(t *testing.T) { | ||
| t.Parallel() | ||
| for i := int64(math.MinInt16); i > -1<<24; i-- { | ||
| expected := genData(i) | ||
|
|
||
| received := EncBigIntRS(big.NewInt(i)) | ||
| if !bytes.Equal(expected, received) { | ||
| t.Fatalf("%d\nexpected:%x\nreceived:%x", i, expected, received) | ||
| } | ||
|
|
||
| received = encInt64(i) | ||
| if !bytes.Equal(expected, received) { | ||
| t.Fatalf("%d\nexpected:%x\nreceived:%x", i, expected, received) | ||
| } | ||
| } | ||
| }) | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package varint | ||
|
|
||
| import ( | ||
| "math" | ||
| "math/big" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestDec2BigInt(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| genData := func(v int64) []byte { | ||
| data := []byte{byte(v >> 56), byte(v >> 48), byte(v >> 40), byte(v >> 32), byte(v >> 24), byte(v >> 16), byte(v >> 8), byte(v)} | ||
| out := make([]byte, 0) | ||
| add := false | ||
| for i, b := range data { | ||
| if !add { | ||
| if v < 0 { | ||
| if b != 255 || b == 255 && data[i+1] < 128 { | ||
| add = true | ||
| } else { | ||
| continue | ||
| } | ||
| } else { | ||
| if b != 0 || b == 0 && data[i+1] > 127 { | ||
| add = true | ||
| } else { | ||
| continue | ||
| } | ||
| } | ||
| } | ||
| out = append(out, b) | ||
| } | ||
|
|
||
| return out | ||
| } | ||
|
|
||
| t.Run("positive", func(t *testing.T) { | ||
| t.Parallel() | ||
| for i := int64(math.MaxInt16); i < 1<<23; i++ { | ||
| data := genData(i) | ||
| expected := big.NewInt(i) | ||
|
|
||
| received := Dec2BigInt(data) | ||
| if expected.Cmp(received) != 0 { | ||
| t.Fatalf("%d\nexpected:%s\nreceived:%s", i, expected, received) | ||
| } | ||
|
|
||
| _ = DecBigInt(data, received) | ||
| if expected.Cmp(received) != 0 { | ||
| t.Fatalf("%d\nexpected:%s\nreceived:%s", i, expected, received) | ||
| } | ||
| } | ||
| }) | ||
|
|
||
| t.Run("negative", func(t *testing.T) { | ||
| t.Parallel() | ||
| for i := int64(math.MinInt16); i > -1<<23; i-- { | ||
| data := genData(i) | ||
| expected := big.NewInt(i) | ||
|
|
||
| received := Dec2BigInt(data) | ||
| if expected.Cmp(received) != 0 { | ||
| t.Fatalf("%d\nexpected:%s\nreceived:%s", i, expected, received) | ||
| } | ||
|
|
||
| _ = DecBigInt(data, received) | ||
| if expected.Cmp(received) != 0 { | ||
| t.Fatalf("%d\nexpected:%s\nreceived:%s", i, expected, received) | ||
| } | ||
| } | ||
| }) | ||
| } |
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