package systemd

import (
	"testing"
)

func TestSystemdVersion(t *testing.T) {
	var systemdVersionTests = []struct {
		verStr      string
		expectedVer int
		expectErr   bool
	}{
		{`"219"`, 219, false},
		{`"v245.4-1.fc32"`, 245, false},
		{`"241-1"`, 241, false},
		{`"v241-1"`, 241, false},
		{"NaN", 0, true},
		{"", 0, true},
	}
	for _, sdTest := range systemdVersionTests {
		ver, err := systemdVersionAtoi(sdTest.verStr)
		if !sdTest.expectErr && err != nil {
			t.Errorf("systemdVersionAtoi(%s); want nil; got %v", sdTest.verStr, err)
		}
		if sdTest.expectErr && err == nil {
			t.Errorf("systemdVersionAtoi(%s); wanted failure; got nil", sdTest.verStr)
		}
		if ver != sdTest.expectedVer {
			t.Errorf("systemdVersionAtoi(%s); want %d; got %d", sdTest.verStr, sdTest.expectedVer, ver)
		}
	}
}