583 lines
16 KiB
Go
583 lines
16 KiB
Go
package decoder
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"math"
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"testing"
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"github.com/influxdata/telegraf"
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"github.com/stretchr/testify/require"
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)
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// Execute will ececute the decode directive relative to the supplied buffer
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func Execute(dd Directive, buffer *bytes.Buffer) error {
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dc := &DecodeContext{}
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return dd.Execute(buffer, dc)
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}
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func Test_basicUI32NotEnoughBytes(t *testing.T) {
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dd := U32()
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value := uint16(1001) // not enough bytes to read a U32 out as only a U16 in
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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require.Error(t, Execute(dd, &buffer))
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}
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func Test_basicUI32(t *testing.T) {
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dd := U32()
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value := uint32(1001)
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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require.NoError(t, Execute(dd, &buffer))
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require.Equal(t, 0, buffer.Len())
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x, _ := dd.(*valueDirective)
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require.Equal(t, &value, x.value)
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}
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func Test_basicBytes(t *testing.T) {
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dd := Bytes(4)
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value := []byte{0x01, 0x02, 0x03, 0x04}
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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require.NoError(t, Execute(dd, &buffer))
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require.Equal(t, 0, buffer.Len())
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x, _ := dd.(*valueDirective)
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require.Equal(t, value, x.value)
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}
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func Test_basicSeq(t *testing.T) {
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// Seq with no members compiles and executed but buffer is left untouched
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dd := Seq()
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value := uint32(1001)
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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originalLen := buffer.Len()
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require.NoError(t, Execute(dd, &buffer))
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require.Equal(t, originalLen, buffer.Len())
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u := U32()
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dd = Seq(
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u,
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)
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value = uint32(1001)
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buffer.Reset()
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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require.NoError(t, Execute(dd, &buffer))
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require.Equal(t, 0, buffer.Len())
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x, _ := u.(*valueDirective)
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require.Equal(t, &value, x.value)
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}
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func Test_basicSeqOf(t *testing.T) {
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// SeqOf with no members compiles and executed but buffer is left untouched
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dd := SeqOf([]Directive{})
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value := uint32(1001)
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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originalLen := buffer.Len()
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require.NoError(t, Execute(dd, &buffer))
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require.Equal(t, originalLen, buffer.Len())
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u := U32()
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dd = SeqOf(
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[]Directive{u},
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)
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value = uint32(1001)
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buffer.Reset()
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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require.NoError(t, Execute(dd, &buffer))
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require.Equal(t, 0, buffer.Len())
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x, _ := u.(*valueDirective)
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require.Equal(t, &value, x.value)
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}
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func Test_errorInSeq(t *testing.T) {
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// Seq with no members compiles and executed but buffer is left untouched
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dd := Seq(U32(), ErrorDirective())
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value := uint32(1001)
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
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require.Error(t, Execute(dd, &buffer))
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}
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func Test_basicU32Switch(t *testing.T) {
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c1 := U32()
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c2 := U32()
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dd := U32().Switch(
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Case(uint32(1), c1),
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Case(uint32(2), c2),
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)
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value1 := uint32(3)
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value1))
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value2 := uint32(4)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value2))
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require.Error(t, Execute(dd, &buffer)) // should error as no path
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value1 = uint32(1)
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buffer.Reset()
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value1))
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value2))
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require.NoError(t, Execute(dd, &buffer))
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x, _ := c1.(*valueDirective)
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y, _ := c2.(*valueDirective)
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value0 := uint32(0)
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require.Equal(t, &value2, x.value)
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require.Equal(t, &value0, y.value)
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// bad path shoudl raise error
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// path 1 should be able to fina value in c1 and not in c2
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// then other way around
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}
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func Test_basicBinSwitch(t *testing.T) {
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c1 := U32()
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c2 := U32()
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dd := Bytes(1).Switch(
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Case(byte(1), c1),
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Case(byte(2), c2),
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)
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value1 := byte(3)
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var buffer bytes.Buffer
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value1))
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value2 := uint32(4)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value2))
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require.Error(t, Execute(dd, &buffer)) // should error as no path
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value1 = byte(1)
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buffer.Reset()
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value1))
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value2))
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require.NoError(t, Execute(dd, &buffer))
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x, _ := c1.(*valueDirective)
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y, _ := c2.(*valueDirective)
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value0 := uint32(0)
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require.Equal(t, &value2, x.value)
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require.Equal(t, &value0, y.value)
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// bad path shoudl raise error
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// path 1 should be able to fina value in c1 and not in c2
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// then other way around
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}
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func Test_basicIter(t *testing.T) {
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innerDD := U32()
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dd := U32().Iter(math.MaxInt32, innerDD)
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var buffer bytes.Buffer
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iterations := uint32(2)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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it1Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it1Val))
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it2Val := uint32(4)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it2Val))
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require.NoError(t, Execute(dd, &buffer))
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x, _ := dd.(*valueDirective)
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require.Equal(t, &iterations, x.value)
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y, _ := innerDD.(*valueDirective)
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// we can't test it1Val as it gets overwritten!
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require.Equal(t, &it2Val, y.value)
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}
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func Test_IterLimit(t *testing.T) {
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innerDD := U32()
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dd := U32().Iter(1, innerDD) // limit set at 1
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var buffer bytes.Buffer
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iterations := uint32(2)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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it1Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it1Val))
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it2Val := uint32(4)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it2Val))
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require.Error(t, Execute(dd, &buffer))
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}
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func Test_errorWithinIter(t *testing.T) {
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dd := U32().Iter(math.MaxInt32, ErrorDirective())
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var buffer bytes.Buffer
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iterations := uint32(1)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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require.Error(t, Execute(dd, &buffer))
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}
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func Test_errorWithinIter2(t *testing.T) {
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dd := U32().Iter(math.MaxInt32, U32().Do(ErrorOp(false)))
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var buffer bytes.Buffer
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iterations := uint32(1)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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innerValue := uint32(1)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &innerValue))
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require.Error(t, Execute(dd, &buffer))
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}
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func Test_errorWithinIter3(t *testing.T) {
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defer expectPanic(t, "Test_cantIterBytes")
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U32().Iter(math.MaxInt32, U32().Do(ErrorOp(true)))
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}
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func Test_alreadyEncapsulated(t *testing.T) {
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defer expectPanic(t, "Test_cantIterBytes")
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u := U32()
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inner := U32()
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u.Encapsulated(math.MaxInt32, inner)
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u.Encapsulated(math.MaxInt32, inner)
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}
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func Test_alreadyDoAssigned(t *testing.T) {
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defer expectPanic(t, "Test_cantIterBytes")
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u := U32()
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u.Do(AsF("foo"))
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inner := U32()
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u.Encapsulated(math.MaxInt32, inner)
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}
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func Test_cantIterBytes(t *testing.T) {
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defer expectPanic(t, "Test_cantIterBytes")
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_ = Bytes(1).Iter(math.MaxInt32, U32())
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}
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// then open metric
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func Test_OpenMetric(t *testing.T) {
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innerDD := U32()
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dd := U32().Iter(math.MaxInt32, Seq(
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OpenMetric(""),
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innerDD,
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CloseMetric(),
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))
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var buffer bytes.Buffer
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iterations := uint32(2)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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it1Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it1Val))
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it2Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it2Val))
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dc := NewDecodeContext()
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require.NoError(t, dc.Decode(dd, &buffer))
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require.Equal(t, 2, len(dc.GetMetrics()))
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}
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func Test_AsF(t *testing.T) {
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innerDD := U32().Do(AsF("foo"))
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dd := U32().Iter(math.MaxInt32, Seq(
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OpenMetric(""),
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innerDD,
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CloseMetric(),
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))
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var buffer bytes.Buffer
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iterations := uint32(2)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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it1Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it1Val))
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it2Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it2Val))
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dc := NewDecodeContext()
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require.NoError(t, dc.Decode(dd, &buffer))
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require.Equal(t, 2, len(dc.GetMetrics()))
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m := dc.GetMetrics()
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require.Equal(t, uint64(it1Val), getField(m[0], "foo"))
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require.Equal(t, uint64(it2Val), getField(m[1], "foo"))
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}
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func Test_AsT(t *testing.T) {
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innerDD := U32().Do(AsT("foo"))
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dd := U32().Iter(math.MaxInt32, Seq(
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OpenMetric(""),
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innerDD,
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CloseMetric(),
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))
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var buffer bytes.Buffer
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iterations := uint32(2)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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it1Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it1Val))
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it2Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it2Val))
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dc := NewDecodeContext()
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require.NoError(t, dc.Decode(dd, &buffer))
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require.Equal(t, 2, len(dc.GetMetrics()))
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m := dc.GetMetrics()
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require.Equal(t, fmt.Sprintf("%d", it1Val), getTag(m[0], "foo"))
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require.Equal(t, fmt.Sprintf("%d", it2Val), getTag(m[1], "foo"))
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}
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func getField(m telegraf.Metric, name string) interface{} {
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v, _ := m.GetField(name)
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return v
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}
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func getTag(m telegraf.Metric, name string) string {
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v, _ := m.GetTag(name)
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return v
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}
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func Test_preMetricNesting(t *testing.T) {
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innerDD := U32().Do(AsF("foo"))
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dd := Seq(
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U32().Do(AsF("bar")),
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U32().Do(AsT("baz")),
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U32().Iter(math.MaxInt32,
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Seq(
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OpenMetric(""),
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innerDD,
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CloseMetric(),
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),
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),
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)
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var buffer bytes.Buffer
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barVal := uint32(55)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &barVal))
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bazVal := uint32(56)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &bazVal))
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iterations := uint32(2)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &iterations))
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it1Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it1Val))
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it2Val := uint32(3)
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &it2Val))
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dc := NewDecodeContext()
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require.NoError(t, dc.Decode(dd, &buffer))
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require.Equal(t, 2, len(dc.GetMetrics()))
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m := dc.GetMetrics()
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require.Equal(t, uint64(barVal), getField(m[0], "bar"))
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require.Equal(t, fmt.Sprintf("%d", bazVal), getTag(m[0], "baz"))
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require.Equal(t, uint64(it1Val), getField(m[0], "foo"))
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require.Equal(t, uint64(barVal), getField(m[1], "bar"))
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require.Equal(t, fmt.Sprintf("%d", bazVal), getTag(m[1], "baz"))
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require.Equal(t, uint64(it2Val), getField(m[1], "foo"))
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}
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func Test_BasicEncapsulated(t *testing.T) {
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encap1Value := uint32(2)
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encap2Value := uint32(3)
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var encapBuffer bytes.Buffer
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require.NoError(t, binary.Write(&encapBuffer, binary.BigEndian, &encap1Value))
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require.NoError(t, binary.Write(&encapBuffer, binary.BigEndian, &encap2Value))
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encapSize := uint32(encapBuffer.Len())
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envelopeValue := uint32(4)
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var envelopeBuffer bytes.Buffer
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require.NoError(t, binary.Write(&envelopeBuffer, binary.BigEndian, &encapSize))
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l, e := envelopeBuffer.Write(encapBuffer.Bytes())
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require.NoError(t, e)
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require.Equal(t, encapSize, uint32(l))
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require.NoError(t, binary.Write(&envelopeBuffer, binary.BigEndian, &envelopeValue))
|
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|
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innerDD := U32()
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envelopeDD := U32() // the buffer contains another U32 but the encpaultation will ignore it
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dd := Seq(
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U32().Encapsulated(math.MaxInt32, innerDD),
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envelopeDD,
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)
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require.NoError(t, Execute(dd, &envelopeBuffer))
|
|
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require.Equal(t, 0, envelopeBuffer.Len())
|
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x, _ := envelopeDD.(*valueDirective)
|
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require.Equal(t, &envelopeValue, x.value)
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y, _ := innerDD.(*valueDirective)
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require.Equal(t, &encap1Value, y.value)
|
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}
|
|
|
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func Test_EncapsulationLimit(t *testing.T) {
|
|
|
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encap1Value := uint32(2)
|
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encap2Value := uint32(3)
|
|
var encapBuffer bytes.Buffer
|
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require.NoError(t, binary.Write(&encapBuffer, binary.BigEndian, &encap1Value))
|
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require.NoError(t, binary.Write(&encapBuffer, binary.BigEndian, &encap2Value))
|
|
|
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encapSize := uint32(encapBuffer.Len())
|
|
envelopeValue := uint32(4)
|
|
var envelopeBuffer bytes.Buffer
|
|
|
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require.NoError(t, binary.Write(&envelopeBuffer, binary.BigEndian, &encapSize))
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l, e := envelopeBuffer.Write(encapBuffer.Bytes())
|
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require.NoError(t, e)
|
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require.Equal(t, encapSize, uint32(l))
|
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require.NoError(t, binary.Write(&envelopeBuffer, binary.BigEndian, &envelopeValue))
|
|
|
|
innerDD := U32()
|
|
envelopeDD := U32()
|
|
dd := Seq(
|
|
U32().Encapsulated(4, innerDD), // 4 bytes, not 8 bytes or higher as max
|
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envelopeDD,
|
|
)
|
|
require.Error(t, Execute(dd, &envelopeBuffer))
|
|
}
|
|
|
|
func Test_cantEncapulatedBytes(t *testing.T) {
|
|
defer expectPanic(t, "cantEncapulatedBytes")
|
|
_ = Bytes(1).Encapsulated(math.MaxInt32, U32())
|
|
}
|
|
|
|
func Test_BasicRef(t *testing.T) {
|
|
var x interface{}
|
|
dd1 := U32().Ref(&x)
|
|
dd2 := Ref(x)
|
|
dd := Seq(
|
|
dd1,
|
|
dd2,
|
|
)
|
|
y, ok := dd2.(*valueDirective)
|
|
require.True(t, ok)
|
|
require.Equal(t, y.reference, x)
|
|
|
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value := uint32(1001)
|
|
var buffer bytes.Buffer
|
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
|
|
require.NoError(t, Execute(dd, &buffer))
|
|
|
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y, _ = dd1.(*valueDirective)
|
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require.Equal(t, &value, y.value)
|
|
|
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y, _ = dd2.(*valueDirective)
|
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require.Equal(t, &value, y.value)
|
|
}
|
|
|
|
func Test_RefReassignError(t *testing.T) {
|
|
defer expectPanic(t, "iter iter")
|
|
var x interface{}
|
|
U32().Ref(&x)
|
|
U32().Ref(&x)
|
|
}
|
|
|
|
func Test_ToU32(t *testing.T) {
|
|
u := U32().Do(U32ToU32(func(in uint32) uint32 { return in >> 2 }).AsF("x"))
|
|
dd := Seq(OpenMetric(""), u, CloseMetric())
|
|
|
|
value := uint32(1001)
|
|
var buffer bytes.Buffer
|
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require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
|
|
|
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dc := NewDecodeContext()
|
|
require.NoError(t, dc.Decode(dd, &buffer))
|
|
|
|
// require original value decoded
|
|
x, _ := u.(*valueDirective)
|
|
require.Equal(t, &value, x.value)
|
|
|
|
// require field ejected
|
|
require.Equal(t, 1, len(dc.GetMetrics()))
|
|
m := dc.GetMetrics()
|
|
require.Equal(t, uint64(value>>2), getField(m[0], "x"))
|
|
}
|
|
|
|
func expectPanic(t *testing.T, msg string) {
|
|
if r := recover(); r == nil {
|
|
t.Errorf(msg)
|
|
}
|
|
}
|
|
|
|
func Test_U32BlankCanvasIter(t *testing.T) {
|
|
u := U32().Iter(math.MaxInt32, U32())
|
|
func() {
|
|
defer expectPanic(t, "iter iter")
|
|
u.Iter(math.MaxInt32, U32())
|
|
}()
|
|
func() {
|
|
defer expectPanic(t, "iter switch")
|
|
u.Switch(Case(uint32(0), U32()))
|
|
}()
|
|
func() {
|
|
defer expectPanic(t, "iter encap")
|
|
u.Encapsulated(math.MaxInt32, U32())
|
|
}()
|
|
func() {
|
|
defer expectPanic(t, "iter do")
|
|
u.Do(AsF("foo"))
|
|
}()
|
|
}
|
|
func Test_U32BlankCanvasSwitch(t *testing.T) {
|
|
u := U32().Switch(Case(uint32(0), U32()))
|
|
func() {
|
|
defer expectPanic(t, "switch iter")
|
|
u.Iter(math.MaxInt32, U32())
|
|
}()
|
|
func() {
|
|
defer expectPanic(t, "switch switch")
|
|
u.Switch(Case(uint32(0), U32()))
|
|
}()
|
|
func() {
|
|
defer expectPanic(t, "switch encap")
|
|
u.Encapsulated(math.MaxInt32, U32())
|
|
}()
|
|
func() {
|
|
defer expectPanic(t, "switch do")
|
|
u.Do(AsF("foo"))
|
|
}()
|
|
}
|
|
|
|
func Test_U32BasicSwitch(t *testing.T) {
|
|
s := U32().Switch(Case(uint32(0), nil))
|
|
value := uint32(0)
|
|
var buffer bytes.Buffer
|
|
require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
|
|
dc := NewDecodeContext()
|
|
require.NoError(t, dc.Decode(s, &buffer))
|
|
}
|
|
|
|
func Test_U32BasicSwitchDefault(t *testing.T) {
|
|
s := U32().Switch(Case(uint32(0), nil), DefaultCase(nil))
|
|
value := uint32(2)
|
|
var buffer bytes.Buffer
|
|
require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
|
|
dc := NewDecodeContext()
|
|
require.NoError(t, dc.Decode(s, &buffer))
|
|
}
|
|
|
|
func Test_U16(t *testing.T) {
|
|
dd := U16()
|
|
value := uint16(1001)
|
|
var buffer bytes.Buffer
|
|
require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
|
|
require.NoError(t, Execute(dd, &buffer))
|
|
require.Equal(t, 0, buffer.Len())
|
|
x, _ := dd.(*valueDirective)
|
|
require.Equal(t, &value, x.value)
|
|
}
|
|
|
|
func Test_U16Value(t *testing.T) {
|
|
myU16 := uint16(5)
|
|
dd := U16Value(&myU16)
|
|
var buffer bytes.Buffer
|
|
require.NoError(t, Execute(dd, &buffer))
|
|
x, _ := dd.(*valueDirective)
|
|
require.Equal(t, &myU16, x.value)
|
|
}
|
|
|
|
func Test_Bytes(t *testing.T) {
|
|
dd := Bytes(4)
|
|
value := []byte{0x01, 0x02, 0x03, 0x04}
|
|
var buffer bytes.Buffer
|
|
require.NoError(t, binary.Write(&buffer, binary.BigEndian, &value))
|
|
require.NoError(t, Execute(dd, &buffer))
|
|
require.Equal(t, 0, buffer.Len())
|
|
x, _ := dd.(*valueDirective)
|
|
require.Equal(t, value, x.value)
|
|
}
|
|
|
|
func Test_nilRefAnfWongTypeRef(t *testing.T) {
|
|
func() {
|
|
defer expectPanic(t, "Test_nilRef")
|
|
Ref(nil)
|
|
}()
|
|
|
|
func() {
|
|
defer expectPanic(t, "Test_nilRef")
|
|
f := new(uint32)
|
|
Ref(f)
|
|
}()
|
|
}
|