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595780be0f
io.EOF is never expected during valid usage. In addition, database/sql uses io.EOF as a sentinal value that all rows from a query have been received. See https://github.com/jackc/pgx/issues/662.
81 lines
1.5 KiB
Go
81 lines
1.5 KiB
Go
package pgproto3_test
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import (
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"io"
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"testing"
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"github.com/jackc/pgproto3/v2"
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"github.com/stretchr/testify/assert"
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)
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type interruptReader struct {
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chunks [][]byte
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}
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func (ir *interruptReader) Read(p []byte) (n int, err error) {
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if len(ir.chunks) == 0 {
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return 0, io.EOF
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}
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n = copy(p, ir.chunks[0])
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if n != len(ir.chunks[0]) {
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panic("this test reader doesn't support partial reads of chunks")
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}
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ir.chunks = ir.chunks[1:]
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return n, nil
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}
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func (ir *interruptReader) push(p []byte) {
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ir.chunks = append(ir.chunks, p)
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}
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func TestFrontendReceiveInterrupted(t *testing.T) {
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t.Parallel()
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server := &interruptReader{}
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server.push([]byte{'Z', 0, 0, 0, 5})
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frontend := pgproto3.NewFrontend(pgproto3.NewChunkReader(server), nil)
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msg, err := frontend.Receive()
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if err == nil {
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t.Fatal("expected err")
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}
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if msg != nil {
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t.Fatalf("did not expect msg, but %v", msg)
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}
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server.push([]byte{'I'})
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msg, err = frontend.Receive()
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if err != nil {
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t.Fatal(err)
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}
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if msg, ok := msg.(*pgproto3.ReadyForQuery); !ok || msg.TxStatus != 'I' {
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t.Fatalf("unexpected msg: %v", msg)
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}
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}
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func TestFrontendReceiveUnexpectedEOF(t *testing.T) {
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t.Parallel()
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server := &interruptReader{}
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server.push([]byte{'Z', 0, 0, 0, 5})
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frontend := pgproto3.NewFrontend(pgproto3.NewChunkReader(server), nil)
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msg, err := frontend.Receive()
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if err == nil {
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t.Fatal("expected err")
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}
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if msg != nil {
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t.Fatalf("did not expect msg, but %v", msg)
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}
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msg, err = frontend.Receive()
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assert.Nil(t, msg)
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assert.Equal(t, io.ErrUnexpectedEOF, err)
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}
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