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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package logging
import (
"bytes"
"fmt"
"io"
"testing"
"github.com/algorand/go-algorand/test/partitiontest"
"github.com/stretchr/testify/require"
)
type logBufferTestFixture struct {
lb *logBuffer
buffer *bytes.Buffer
w io.Writer
}
const testString1 = "^Q&(WE70qw6e67citjy SCjk\r\n~!@<>$%^"
const testString2 = "$*&!@*(!@_!@)#&,../,./,zxc]\\[]\\[[]\\"
const testString3 = "teststring3"
func createFixture(maxDepth uint) logBufferTestFixture {
fixture := logBufferTestFixture{
lb: createLogBuffer(maxDepth),
buffer: bytes.NewBuffer(nil),
}
fixture.w = fixture.lb.wrapOutput(fixture.buffer)
return fixture
}
func TestLogBufferEmpty(t *testing.T) {
partitiontest.PartitionTest(t)
fixture := createFixture(10)
require.Equal(t, "", fixture.lb.string())
}
func TestLogBufferString(t *testing.T) {
partitiontest.PartitionTest(t)
fixture := createFixture(10)
lb := fixture.lb
w := fixture.w
require.Equal(t, lb.string(), "")
fmt.Fprint(w, testString1)
require.Equal(t, testString1, lb.string())
require.Equal(t, fixture.buffer.String(), lb.string())
}
func TestLogBufferStrings(t *testing.T) {
partitiontest.PartitionTest(t)
fixture := createFixture(10)
w := fixture.w
fmt.Fprint(w, testString1)
fmt.Fprint(w, testString2)
fmt.Fprint(w, testString3)
lb := fixture.lb
expected := testString1 + testString2 + testString3
require.Equal(t, expected, lb.string())
require.Equal(t, expected, fixture.buffer.String())
}
func TestLogBufferZeroMaxDepth(t *testing.T) {
partitiontest.PartitionTest(t)
fixture := createFixture(0)
w := fixture.w
fmt.Fprint(w, testString1)
fmt.Fprint(w, testString2)
fmt.Fprint(w, testString3)
// logBuffer should store nothing
require.Equal(t, "", fixture.lb.string())
}
func TestLogBufferMaxDepth(t *testing.T) {
partitiontest.PartitionTest(t)
fixture := createFixture(2)
w := fixture.w
fmt.Fprint(w, testString1)
fmt.Fprint(w, testString2)
fmt.Fprint(w, testString3)
lb := fixture.lb
expected := testString2 + testString3
// logBuffer should only store last 2 strings
require.Equal(t, expected, lb.string())
// output buffer should still have all 3 strings
require.Equal(t, testString1+testString2+testString3, fixture.buffer.String())
}
func TestLogBufferTrim(t *testing.T) {
partitiontest.PartitionTest(t)
maxDepth := uint(9)
entryCount := maxDepth + 2
lb := createLogBuffer(maxDepth)
for i := 0; i < int(entryCount); i++ {
lb.append(fmt.Sprintf("%d", i))
}
// Initial count should be maxDepth - filled
require.Equal(t, maxDepth, lb.used)
// Trim, then count should be half that (rounded up)
lb.trim()
require.Equal(t, (maxDepth+1)/2, lb.used)
// First entry left should reflect the first half of buffer being trimmed.
require.Equal(t, fmt.Sprintf("%d", entryCount-((maxDepth+1)/2)), lb.buffer[lb.first])
}
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