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binary_literal_test.go
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// Copyright 2017 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"fmt"
"testing"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/stretchr/testify/require"
)
func TestBinaryLiteral(t *testing.T) {
t.Run("TestTrimLeadingZeroBytes", func(t *testing.T) {
tbl := []struct {
Input []byte
Expected []byte
}{
{[]byte{}, []byte{}},
{[]byte{0x0}, []byte{0x0}},
{[]byte{0x1}, []byte{0x1}},
{[]byte{0x1, 0x0}, []byte{0x1, 0x0}},
{[]byte{0x0, 0x1}, []byte{0x1}},
{[]byte{0x0, 0x0, 0x0}, []byte{0x0}},
{[]byte{0x1, 0x0, 0x0}, []byte{0x1, 0x0, 0x0}},
{[]byte{0x0, 0x1, 0x0, 0x0, 0x1, 0x0, 0x0}, []byte{0x1, 0x0, 0x0, 0x1, 0x0, 0x0}},
{[]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x1, 0x0, 0x0}, []byte{0x1, 0x0, 0x0, 0x1, 0x0, 0x0}},
}
for _, item := range tbl {
b := trimLeadingZeroBytes(item.Input)
require.Equal(t, item.Expected, b, fmt.Sprintf("%#v", item))
}
})
t.Run("TestParseBitStr", func(t *testing.T) {
tbl := []struct {
Input string
Expected []byte
IsError bool
}{
{"b''", []byte{}, false},
{"B''", []byte{}, false},
{"0b''", nil, true},
{"0b0", []byte{0x0}, false},
{"b'0'", []byte{0x0}, false},
{"B'0'", []byte{0x0}, false},
{"0B0", nil, true},
{"0b123", nil, true},
{"b'123'", nil, true},
{"0b'1010'", nil, true},
{"0b0000000", []byte{0x0}, false},
{"b'0000000'", []byte{0x0}, false},
{"B'0000000'", []byte{0x0}, false},
{"0b00000000", []byte{0x0}, false},
{"b'00000000'", []byte{0x0}, false},
{"B'00000000'", []byte{0x0}, false},
{"0b000000000", []byte{0x0, 0x0}, false},
{"b'000000000'", []byte{0x0, 0x0}, false},
{"B'000000000'", []byte{0x0, 0x0}, false},
{"0b1", []byte{0x1}, false},
{"b'1'", []byte{0x1}, false},
{"B'1'", []byte{0x1}, false},
{"0b00000001", []byte{0x1}, false},
{"b'00000001'", []byte{0x1}, false},
{"B'00000001'", []byte{0x1}, false},
{"0b000000010", []byte{0x0, 0x2}, false},
{"b'000000010'", []byte{0x0, 0x2}, false},
{"B'000000010'", []byte{0x0, 0x2}, false},
{"0b000000001", []byte{0x0, 0x1}, false},
{"b'000000001'", []byte{0x0, 0x1}, false},
{"B'000000001'", []byte{0x0, 0x1}, false},
{"0b11111111", []byte{0xFF}, false},
{"b'11111111'", []byte{0xFF}, false},
{"B'11111111'", []byte{0xFF}, false},
{"0b111111111", []byte{0x1, 0xFF}, false},
{"b'111111111'", []byte{0x1, 0xFF}, false},
{"B'111111111'", []byte{0x1, 0xFF}, false},
{"0b1101000011001010110110001101100011011110010000001110111011011110111001001101100011001000010000001100110011011110110111100100000011000100110000101110010", []byte("hello world foo bar"), false},
{"b'1101000011001010110110001101100011011110010000001110111011011110111001001101100011001000010000001100110011011110110111100100000011000100110000101110010'", []byte("hello world foo bar"), false},
{"B'1101000011001010110110001101100011011110010000001110111011011110111001001101100011001000010000001100110011011110110111100100000011000100110000101110010'", []byte("hello world foo bar"), false},
{"0b01101000011001010110110001101100011011110010000001110111011011110111001001101100011001000010000001100110011011110110111100100000011000100110000101110010", []byte("hello world foo bar"), false},
{"b'01101000011001010110110001101100011011110010000001110111011011110111001001101100011001000010000001100110011011110110111100100000011000100110000101110010'", []byte("hello world foo bar"), false},
{"B'01101000011001010110110001101100011011110010000001110111011011110111001001101100011001000010000001100110011011110110111100100000011000100110000101110010'", []byte("hello world foo bar"), false},
}
for _, item := range tbl {
b, err := ParseBitStr(item.Input)
if item.IsError {
require.Error(t, err, fmt.Sprintf("%#v", item))
} else {
require.NoError(t, err, fmt.Sprintf("%#v", item))
require.Equal(t, item.Expected, []byte(b), fmt.Sprintf("%#v", item))
}
}
})
t.Run("TestParseBitStr", func(t *testing.T) {
b, err := ParseBitStr("")
require.Nil(t, b)
require.Error(t, err)
require.Contains(t, err.Error(), "invalid empty ")
})
t.Run("TestParseHexStr", func(t *testing.T) {
tbl := []struct {
Input string
Expected []byte
IsError bool
}{
{"x'1'", nil, true},
{"x'01'", []byte{0x1}, false},
{"X'01'", []byte{0x1}, false},
{"0x1", []byte{0x1}, false},
{"0x-1", nil, true},
{"0X11", nil, true},
{"x'01+'", nil, true},
{"0x123", []byte{0x01, 0x23}, false},
{"0x10", []byte{0x10}, false},
{"0x4D7953514C", []byte("MySQL"), false},
{"0x4920616D2061206C6F6E672068657820737472696E67", []byte("I am a long hex string"), false},
{"x'4920616D2061206C6F6E672068657820737472696E67'", []byte("I am a long hex string"), false},
{"X'4920616D2061206C6F6E672068657820737472696E67'", []byte("I am a long hex string"), false},
{"x''", []byte{}, false},
}
for _, item := range tbl {
hex, err := ParseHexStr(item.Input)
if item.IsError {
require.Error(t, err, fmt.Sprintf("%#v", item))
} else {
require.NoError(t, err, fmt.Sprintf("%#v", item))
require.Equal(t, item.Expected, []byte(hex), fmt.Sprintf("%#v", item))
}
}
})
t.Run("TestParseHexStr", func(t *testing.T) {
b, err := ParseBitStr("")
require.Nil(t, b)
require.Error(t, err)
require.Contains(t, err.Error(), "invalid empty ")
})
t.Run("TestString", func(t *testing.T) {
tbl := []struct {
Input BinaryLiteral
Expected string
}{
{BinaryLiteral{}, ""}, // Expected
{BinaryLiteral{0x0}, "0x00"},
{BinaryLiteral{0x1}, "0x01"},
{BinaryLiteral{0xff, 0x01}, "0xff01"},
}
for _, item := range tbl {
str := item.Input.String()
require.Equal(t, str, item.Expected)
}
})
t.Run("TestToBitLiteralString", func(t *testing.T) {
tbl := []struct {
Input BinaryLiteral
TrimLeadingZero bool
Expected string
}{
{BinaryLiteral{}, true, "b''"},
{BinaryLiteral{}, false, "b''"},
{BinaryLiteral{0x0}, true, "b'0'"},
{BinaryLiteral{0x0}, false, "b'00000000'"},
{BinaryLiteral{0x0, 0x0}, true, "b'0'"},
{BinaryLiteral{0x0, 0x0}, false, "b'0000000000000000'"},
{BinaryLiteral{0x1}, true, "b'1'"},
{BinaryLiteral{0x1}, false, "b'00000001'"},
{BinaryLiteral{0xff, 0x01}, true, "b'1111111100000001'"},
{BinaryLiteral{0xff, 0x01}, false, "b'1111111100000001'"},
{BinaryLiteral{0x0, 0xff, 0x01}, true, "b'1111111100000001'"},
{BinaryLiteral{0x0, 0xff, 0x01}, false, "b'000000001111111100000001'"},
}
for _, item := range tbl {
str := item.Input.ToBitLiteralString(item.TrimLeadingZero)
require.Equal(t, item.Expected, str)
}
})
t.Run("TestToInt", func(t *testing.T) {
tbl := []struct {
Input string
Expected uint64
HasError bool
}{
{"x''", 0, false},
{"0x00", 0x0, false},
{"0xff", 0xff, false},
{"0x10ff", 0x10ff, false},
{"0x1010ffff", 0x1010ffff, false},
{"0x1010ffff8080", 0x1010ffff8080, false},
{"0x1010ffff8080ff12", 0x1010ffff8080ff12, false},
{"0x1010ffff8080ff12ff", 0xffffffffffffffff, true},
}
sc := new(stmtctx.StatementContext)
for _, item := range tbl {
hex, err := ParseHexStr(item.Input)
require.NoError(t, err)
intValue, err := hex.ToInt(sc)
if item.HasError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
require.Equal(t, item.Expected, intValue)
}
})
t.Run("TestNewBinaryLiteralFromUint", func(t *testing.T) {
tbl := []struct {
Input uint64
ByteSize int
Expected []byte
}{
{0x0, -1, []byte{0x0}},
{0x0, 1, []byte{0x0}},
{0x0, 2, []byte{0x0, 0x0}},
{0x1, -1, []byte{0x1}},
{0x1, 1, []byte{0x1}},
{0x1, 2, []byte{0x0, 0x1}},
{0x1, 3, []byte{0x0, 0x0, 0x1}},
{0x10, -1, []byte{0x10}},
{0x123, -1, []byte{0x1, 0x23}},
{0x123, 2, []byte{0x1, 0x23}},
{0x123, 1, []byte{0x23}},
{0x123, 5, []byte{0x0, 0x0, 0x0, 0x1, 0x23}},
{0x4D7953514C, -1, []byte{0x4D, 0x79, 0x53, 0x51, 0x4C}},
{0x4D7953514C, 8, []byte{0x0, 0x0, 0x0, 0x4D, 0x79, 0x53, 0x51, 0x4C}},
{0x4920616D2061206C, -1, []byte{0x49, 0x20, 0x61, 0x6D, 0x20, 0x61, 0x20, 0x6C}},
{0x4920616D2061206C, 8, []byte{0x49, 0x20, 0x61, 0x6D, 0x20, 0x61, 0x20, 0x6C}},
{0x4920616D2061206C, 5, []byte{0x6D, 0x20, 0x61, 0x20, 0x6C}},
}
for _, item := range tbl {
hex := NewBinaryLiteralFromUint(item.Input, item.ByteSize)
require.Equal(t, item.Expected, []byte(hex), fmt.Sprintf("%#v", item))
}
defer func() {
r := recover()
require.NotNil(t, r)
}()
NewBinaryLiteralFromUint(0x123, -2)
})
t.Run("TestCompare", func(t *testing.T) {
tbl := []struct {
a BinaryLiteral
b BinaryLiteral
cmp int
}{
{BinaryLiteral{0, 0, 1}, BinaryLiteral{2}, -1},
{BinaryLiteral{0, 1}, BinaryLiteral{0, 0, 2}, -1},
{BinaryLiteral{0, 1}, BinaryLiteral{1}, 0},
{BinaryLiteral{0, 2, 1}, BinaryLiteral{1, 2}, 1},
}
for _, item := range tbl {
require.Equal(t, item.cmp, item.a.Compare(item.b))
}
})
t.Run("TestToString", func(t *testing.T) {
h, _ := NewHexLiteral("x'3A3B'")
str := h.ToString()
require.Equal(t, str, ":;")
b, _ := NewBitLiteral("b'00101011'")
str = b.ToString()
require.Equal(t, "+", str)
})
}