package gupta

import (
	"fmt"
	"strings"
	"testing"
)

func TestFreeMem(t *testing.T) {
	m := Memory{}
	m.free = uint64(1200)
	got := m.Free()
	want := uint64(1200)
	name := "free"
	if got != want {
		t.Errorf("got %s %d want %d", name, got, want)
	}
}

func TestTotalMem(t *testing.T) {
	m := Memory{total: uint64(2400)}
	got := m.Total()
	want := uint64(2400)
	name := "total"
	if got != want {
		t.Errorf("got %s %d want %d", name, got, want)
	}
}

func TestUsedMem(t *testing.T) {
	m := Memory{total: uint64(2400), free: uint64(1200)}
	got := m.Used()
	fmt.Println(got)
	want := uint64(1200)
	name := "used"
	if got != want {
		t.Errorf("got %s %d want %d", name, got, want)
	}
}

func TestNewMemory(t *testing.T) {
	//r, _ := os.open("/proc/meminfo")
	r := strings.NewReader("MemTotal:       16080192 kB\nMemFree:         3617004 kB\nMemAvailable:   11258504 kB\nBuffers:         1814108 kB\n")
	mem := NewMemory(r)
	got := mem.total
	want := uint64(16080192)
	name := "memory total"
	if got != want {
		t.Errorf("got %s %d want %d", name, got, want)
	}
}