main_test.go

//
// Copyright (c) 2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package main

import (
	"fmt"
	"io/ioutil"
	"os"
	"path"
	"testing"

	"github.com/dlespiau/covertool/pkg/cover"
)

// package variables set in TestMain
var testDir = ""
var testDirMode = os.FileMode(0750)

func runUnitTests(m *testing.M) {
	var err error

	testDir, err = ioutil.TempDir("", fmt.Sprintf("%s-", name))
	if err != nil {
		panic(err)
	}

	err = os.MkdirAll(testDir, testDirMode)
	if err != nil {
		fmt.Printf("Could not create test directory %s: %s\n", testDir, err)
		os.Exit(1)
	}

	ret := m.Run()

	os.RemoveAll(testDir)

	os.Exit(ret)
}

// TestMain is the common main function used by ALL the test functions
// for this package.
func TestMain(m *testing.M) {
	// Parse the command line using the stdlib flag package so the flags defined
	// in the testing package get populated.
	cover.ParseAndStripTestFlags()

	// Make sure we have the opportunity to flush the coverage report to disk when
	// terminating the process.
	atexit(cover.FlushProfiles)

	// If the test binary name is cc-runtime.coverage, we've are being asked to
	// run the coverage-instrumented cc-runtime.
	if path.Base(os.Args[0]) == name+".coverage" ||
		path.Base(os.Args[0]) == name {
		main()
		exit(0)
	}

	runUnitTests(m)
}

func createEmptyFile(path string) (err error) {
	return ioutil.WriteFile(path, []byte(""), testFileMode)
}