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|
package integrationtests
import (
"context"
"fmt"
"os"
"strings"
"sync"
"testing"
"time"
"github.com/mimecast/dtail/internal/config"
)
// TestDGrepLiteralModeInfo verifies that the server logs info message when using literal mode
func TestDGrepLiteralModeInfo(t *testing.T) {
if !config.Env("DTAIL_INTEGRATION_TEST_RUN_MODE") {
t.Log("Skipping")
return
}
cleanupTmpFiles(t)
testLogger := NewTestLogger("TestDGrepLiteralModeInfo")
defer testLogger.WriteLogFile()
// Create test data
testData := `ERROR test line 1
WARNING test line 2
ERROR test line 3
INFO test line 4
ERROR test line 5
`
testFile := "literal_info_test.log.tmp"
if err := os.WriteFile(testFile, []byte(testData), 0644); err != nil {
t.Fatal("Failed to create test file:", err)
}
defer os.Remove(testFile)
// Test patterns - both literal and regex
tests := []struct {
name string
pattern string
expectLiteral bool
expectedCount int
}{
{
name: "SimpleLiteral",
pattern: "ERROR",
expectLiteral: true,
expectedCount: 3,
},
{
name: "LiteralWithSpace",
pattern: "ERROR test",
expectLiteral: true,
expectedCount: 3,
},
{
name: "RegexPattern",
pattern: "ERROR.*line [0-9]",
expectLiteral: false,
expectedCount: 3,
},
{
name: "RegexAlternation",
pattern: "(ERROR|WARNING)",
expectLiteral: false,
expectedCount: 4,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
port := getUniquePortNumber()
bindAddress := "localhost"
ctx, cancel := context.WithCancel(context.Background())
ctx = WithTestLogger(ctx, testLogger)
defer cancel()
// Start dserver with info log level to capture our message
stdoutCh, stderrCh, _, err := startCommand(ctx, t,
"", "../dserver",
"--cfg", "none",
"--logger", "stdout",
"--logLevel", "info", // Changed from error to info
"--bindAddress", bindAddress,
"--port", fmt.Sprintf("%d", port),
)
if err != nil {
t.Error(err)
return
}
// Capture server output
var serverOutput strings.Builder
var outputMutex sync.Mutex
outputDone := make(chan struct{})
go func() {
defer close(outputDone)
for {
select {
case line := <-stdoutCh:
outputMutex.Lock()
serverOutput.WriteString(line)
serverOutput.WriteString("\n")
outputMutex.Unlock()
case line := <-stderrCh:
outputMutex.Lock()
serverOutput.WriteString(line)
serverOutput.WriteString("\n")
outputMutex.Unlock()
case <-ctx.Done():
return
}
}
}()
if err := waitForServerReady(ctx, bindAddress, port); err != nil {
t.Error(err)
return
}
// Run dgrep
outFile := fmt.Sprintf("dgrep_info_%s.stdout.tmp", test.name)
defer os.Remove(outFile)
err = runCommandUntilValid(ctx, t, 5, 200*time.Millisecond, outFile, "../dgrep", func() error {
content, readErr := os.ReadFile(outFile)
if readErr != nil {
return fmt.Errorf("failed to read output file: %w", readErr)
}
lines := strings.Split(strings.TrimSpace(string(content)), "\n")
actualCount := 0
for _, line := range lines {
if line != "" {
actualCount++
}
}
if actualCount != test.expectedCount {
return fmt.Errorf("pattern %q: expected %d matches, got %d", test.pattern, test.expectedCount, actualCount)
}
return nil
},
"--plain",
"--cfg", "none",
"--grep", test.pattern,
"--servers", fmt.Sprintf("%s:%d", bindAddress, port),
"--trustAllHosts",
"--noColor",
"--files", testFile)
if err != nil {
t.Errorf("Failed to run dgrep with pattern '%s': %v", test.pattern, err)
return
}
// Give time for server output to be captured
time.Sleep(500 * time.Millisecond)
// Stop server
cancel()
// Wait for output capture goroutine to finish
select {
case <-outputDone:
case <-time.After(2 * time.Second):
t.Log("Warning: output capture goroutine did not finish in time")
}
// Check server output for literal mode message
outputMutex.Lock()
serverLog := serverOutput.String()
outputMutex.Unlock()
// The server uses structured logging, so the message appears as "pattern:|<pattern>"
literalMsg := fmt.Sprintf("Using optimized literal string matching for pattern:|%s", test.pattern)
containsLiteralMsg := strings.Contains(serverLog, literalMsg)
if test.expectLiteral && !containsLiteralMsg {
t.Errorf("Expected literal mode info message for pattern '%s' but didn't find it", test.pattern)
t.Logf("Server output:\n%s", serverLog)
} else if !test.expectLiteral && containsLiteralMsg {
t.Errorf("Did not expect literal mode info message for pattern '%s' but found it", test.pattern)
t.Logf("Server output:\n%s", serverLog)
}
})
}
}
|
