src/runtime/metrics_cgo_test.go

// Copyright 2025 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build cgo

package runtime_test

import (
	"internal/race"
	"runtime"
	"testing"
)

func TestNotInGoMetricCallback(t *testing.T) {
	switch runtime.GOOS {
	case "windows", "plan9":
		t.Skip("unsupported on Windows and Plan9")
	case "freebsd":
		if race.Enabled {
			t.Skipf("race + cgo freebsd not supported. See https://go.dev/issue/73788.")
		}
	}

	// This test is run in a subprocess to prevent other tests from polluting the metrics
	// and because we need to make some cgo callbacks.
	output := runTestProg(t, "testprogcgo", "NotInGoMetricCallback")
	want := "OK\n"
	if output != want {
		t.Fatalf("output:\n%s\n\nwanted:\n%s", output, want)
	}
}