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trace_test.go
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trace_test.go
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// SPDX-License-Identifier: MIT
//
// Copyright © 2018 Kent Gibson <warthog618@gmail.com>.
package trace_test
import (
"bytes"
"log"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/warthog618/modem/trace"
)
func TestNew(t *testing.T) {
mrw := bytes.NewBufferString("one")
b := bytes.Buffer{}
l := log.New(&b, "", log.LstdFlags)
// vanilla
tr := trace.New(mrw)
assert.NotNil(t, tr)
// with options
tr = trace.New(mrw, trace.WithLogger(l), trace.WithReadFormat("r: %v"))
assert.NotNil(t, tr)
}
func TestRead(t *testing.T) {
mrw := bytes.NewBufferString("one")
b := bytes.Buffer{}
l := log.New(&b, "", 0)
tr := trace.New(mrw, trace.WithLogger(l))
require.NotNil(t, tr)
i := make([]byte, 10)
n, err := tr.Read(i)
assert.Nil(t, err)
assert.Equal(t, 3, n)
assert.Equal(t, []byte("r: one\n"), b.Bytes())
}
func TestWrite(t *testing.T) {
mrw := bytes.NewBufferString("one")
b := bytes.Buffer{}
l := log.New(&b, "", 0)
tr := trace.New(mrw, trace.WithLogger(l))
require.NotNil(t, tr)
n, err := tr.Write([]byte("two"))
assert.Nil(t, err)
assert.Equal(t, 3, n)
assert.Equal(t, []byte("w: two\n"), b.Bytes())
}
func TestReadFormat(t *testing.T) {
mrw := bytes.NewBufferString("one")
b := bytes.Buffer{}
l := log.New(&b, "", 0)
tr := trace.New(mrw, trace.WithLogger(l), trace.WithReadFormat("R: %v"))
require.NotNil(t, tr)
i := make([]byte, 10)
n, err := tr.Read(i)
assert.Nil(t, err)
assert.Equal(t, 3, n)
assert.Equal(t, []byte("R: [111 110 101]\n"), b.Bytes())
}
func TestWriteFormat(t *testing.T) {
mrw := bytes.NewBufferString("one")
b := bytes.Buffer{}
l := log.New(&b, "", 0)
tr := trace.New(mrw, trace.WithLogger(l), trace.WithWriteFormat("W: %v"))
require.NotNil(t, tr)
n, err := tr.Write([]byte("two"))
assert.Nil(t, err)
assert.Equal(t, 3, n)
assert.Equal(t, []byte("W: [116 119 111]\n"), b.Bytes())
}