Update perf_test.go

Signed-off-by: zeroalphat <taichi-takemura@cybozu.co.jp>

pkg/resource/perf_test.go

@@ -1,50 +1,42 @@
 package resource
 
 import (
+	"bufio"
 	"context"
 	"os"
 	"os/exec"
+	"strconv"
 	"testing"
 	"time"
 
 	"log/slog"
 )
 
-func TestHasPerfEvent(t *testing.T) {
+func TestPerfExecutor(t *testing.T) {
 	t.Parallel()
+	var timeout = 10 * time.Second
 
-	logger := slog.Default()
-	perfExecuter, err := NewPerfExecuter(logger)
+	f, err := os.Open("/proc/sys/kernel/perf_event_paranoid")
 	if err != nil {
 		t.Fatal(err)
 	}
-	if perfExecuter.binPath == "" {
-		t.Skip("Skip test because perf is not installed")
-	}
 
-	ctx := context.Background()
-	buf, err := perfExecuter.GetEvent(ctx, "./testdata/no_event.data")
+	scanner := bufio.NewScanner(f)
+
+
+	paranoid, err := strconv.Atoi(string(bytes))
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	if perfExecuter.HasPerfEvent(ctx, buf) {
-		t.Fatalf("Expecting false, but got true")
+	if paranoid >= 0 {
+		t.Skipf("Skip test because perf_event_paranoid is %q", paranoid)
 	}
 
-	buf, err = perfExecuter.GetEvent(ctx, "./testdata/has_events.data")
+	_, err = exec.LookPath("perf")
 	if err != nil {
-		t.Fatal(err)
-	}
-
-	if !perfExecuter.HasPerfEvent(ctx, buf) {
-		t.Fatalf("Expecting true, but got false")
+		t.Skip("Skip test because perf is not installed")
 	}
-}
-
-func TestPerfExecutor(t *testing.T) {
-	var timeout = 10 * time.Second
-	t.Parallel()
 
 	logger := slog.Default()
 	perfExecuter, err := NewPerfExecuter(logger)