task/task_test.go

package task_test

import (
	"os"
	"os/exec"
	"path/filepath"
	"testing"
)

func TestDeps(t *testing.T) {
	const dir = "testdata/deps"

	files := []string{
		"d1.txt",
		"d2.txt",
		"d3.txt",
		"d11.txt",
		"d12.txt",
		"d13.txt",
		"d21.txt",
		"d22.txt",
		"d23.txt",
		"d31.txt",
		"d32.txt",
		"d33.txt",
	}

	for _, f := range files {
		_ = os.Remove(f)
	}

	c := exec.Command("task")
	c.Dir = dir
	if err := c.Run(); err != nil {
		t.Error(err)
		return
	}

	for _, f := range files {
		f = filepath.Join(dir, f)
		if _, err := os.Stat(f); err != nil {
			t.Errorf("File %s should exists", f)
		}
	}
}