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package packet
import (
"context"
"reflect"
"slices"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/kyren223/eko/internal/data"
"github.com/kyren223/eko/pkg/snowflake"
)
func TestPacketEncodingDecoding(t *testing.T) {
testPacketEncodingDecoding(t, &Error{PktType: 0, Error: ""})
node := snowflake.NewNode(1)
id := node.Generate()
testPacketEncodingDecoding(t, &MessagesInfo{Messages: []data.Message{
{
ID: node.Generate(),
SenderID: node.Generate(),
Content: "MyMessage",
FrequencyID: &id,
ReceiverID: nil,
},
{
ID: node.Generate(),
SenderID: node.Generate(),
Content: "Another Message\nWith a bunch of stuff",
FrequencyID: nil,
ReceiverID: &id,
},
}})
}
func testPacketEncodingDecoding(t *testing.T, payload Payload) {
t.Helper()
jsonEncoder := NewJsonEncoder(payload)
jsonPacket := NewPacket(jsonEncoder)
msgPackEncoder := NewJsonEncoder(payload)
msgPackPacket := NewPacket(msgPackEncoder)
jsonPayload, err := jsonPacket.DecodedPayload()
require.NoError(t, err, "json payload decoding should not fail")
require.True(t, reflect.DeepEqual(payload, jsonPayload), "json payload mismatch", "got", jsonPayload, "want", payload)
msgPackPayload, err := msgPackPacket.DecodedPayload()
require.NoError(t, err, "msgpack payload decoding should not fail")
require.True(t, reflect.DeepEqual(payload, msgPackPayload), "msgpack payload mismatch", "got", msgPackPayload, "want", payload)
}
func TestPacketFramer(t *testing.T) {
require.True(t, false, "Failing on purpose")
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*20)
defer cancel()
framer := NewFramer()
pkt := NewPacket(NewJsonEncoder(&Error{PktType: 0, Error: ""}))
length := len(pkt.data)
count := 5
data := make([]byte, length*count)
for i := 0; i < count; i++ {
copy(data[i*length:], pkt.data)
}
first := 2
require.True(t, first < HEADER_SIZE, "TEST ERROR size needs to be less than the header")
err := framer.Push(ctx, data[:first])
data = data[first:]
require.NoError(t, err, "expecting framer to return nil and wait for more data for header")
require.False(t, doesChannelHaveValue(framer.Out), "expecting channel to block with no value")
err = framer.Push(ctx, data[:HEADER_SIZE])
data = data[HEADER_SIZE:]
require.NoError(t, err, "expecting framer to return nil and wait for more data for payload")
require.False(t, doesChannelHaveValue(framer.Out), "expecting channel to block with no value")
err = framer.Push(ctx, data[:length])
data = data[length:]
require.NoError(t, err, "expecting framer to return nil and process exactly 1 packet")
select {
case p, ok := <-framer.Out:
require.True(t, ok, "expecting a value from the framer")
require.True(t, slices.Equal(p.data, pkt.data), "expecting packet to be equal", "got", p.data, "want", pkt.data)
default:
require.Fail(t, "expected packet but channel was blocking")
}
require.False(t, doesChannelHaveValue(framer.Out), "expecting channel to block with no value because it was consumed already")
err = framer.Push(ctx, data[:])
require.NoError(t, err, "expecting framer to return nil and process the rest of the packets")
for i := 0; i < count-1; i++ {
select {
case p, ok := <-framer.Out:
require.True(t, ok, "expecting a value from the framer")
require.True(t, slices.Equal(p.data, pkt.data), "expecting packet to be equal", "got", p.data, "want", pkt.data)
default:
require.Failf(t, "channel blocked", "%v expected packet", i)
}
}
require.False(t, doesChannelHaveValue(framer.Out), "expecting channel to block with no value because it was consumed already")
}
func doesChannelHaveValue[T any](c <-chan T) bool {
select {
case _, ok := <-c:
return ok
default:
return false
}
}
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