tests: add TestLogFilterOutput test

logger_cb_test.go

@@ -0,0 +1,43 @@
+package libbpfgo
+
+import "testing"
+
+func TestLogFilterOutput(t *testing.T) {
+	tests := []struct {
+		libbpfPrintLevel int
+		output           string
+		expectedResult   bool
+	}{
+		{
+			output:         "libbpf: prog 'trace_check_map_func_compatibility': failed to create kprobe 'check_map_func_compatibility+0x0' perf event: No such file or directory\n",
+			expectedResult: true,
+		},
+		{
+			output:         "libbpf: Kernel error message: Exclusivity flag on\n",
+			expectedResult: true,
+		},
+		{
+			output:         "libbpf: prog 'cgroup_skb_ingress': failed to attach to cgroup 'cgroup': Invalid argument\n",
+			expectedResult: true,
+		},
+		{
+			output:         "libbpf: prog 'cgroup_skb_egress': failed to attach to cgroup 'cgroup': Invalid argument\n",
+			expectedResult: true,
+		},
+		{
+			output:         "This is not a log message that should be filtered\n",
+			expectedResult: false,
+		},
+		{
+			output:         "libbpf: This is not a log message that should be filtered\n",
+			expectedResult: false,
+		},
+	}
+
+	for _, test := range tests {
+		result := LogFilterOutput(test.libbpfPrintLevel, test.output)
+		if result != test.expectedResult {
+			t.Errorf("For input '%s', expected %v but got %v", test.output, test.expectedResult, result)
+		}
+	}
+}