src/tests/dlog/dlog_test.go

// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package main

import (
	"context"
	"os"
	"path/filepath"
	"testing"

	"go.fuchsia.dev/fuchsia/tools/emulator"
	"go.fuchsia.dev/fuchsia/tools/emulator/emulatortest"
)

func TestDlog(t *testing.T) {
	exDir := execDir(t)
	distro := emulatortest.UnpackFrom(t, filepath.Join(exDir, "test_data"), emulator.DistributionParams{
		Emulator: emulator.Qemu,
	})
	arch := distro.TargetCPU()
	device := emulator.DefaultVirtualDevice(string(arch))

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()
	i := distro.CreateContext(ctx, device)
	i.Start()
	i.WaitForLogMessage("initializing platform")

	// Make sure the shell is ready to accept commands over serial.
	i.WaitForLogMessage("console.shell: enabled")

	// Run dlog
	i.RunCommand("dlog")
	// Look for the same log message again.
	i.WaitForLogMessage("initializing platform")
}

func execDir(t *testing.T) string {
	ex, err := os.Executable()
	if err != nil {
		t.Fatal(err)
	}
	return filepath.Dir(ex)
}