github.com/xyproto/u-root@v6.0.1-0.20200302025726-5528e0c77a3c+incompatible/cmds/core/elvish/eval/vars/ptr_test.go (about)

     1  package vars
     2  
     3  import "testing"
     4  
     5  func TestPtrVariable(t *testing.T) {
     6  	i := 10
     7  	variable := FromPtr(&i)
     8  	if g := variable.Get(); g != "10" {
     9  		t.Errorf(`Getting ptrVariable returns %v, want "10"`, g)
    10  	}
    11  	err := variable.Set("20")
    12  	if err != nil {
    13  		t.Errorf(`Setting ptrVariable with "20" returns error %v`, err)
    14  	}
    15  	if i != 20 {
    16  		t.Errorf(`Setting ptrVariable didn't change underlying value`)
    17  	}
    18  	err = variable.Set("x")
    19  	if err == nil {
    20  		t.Errorf("Setting ptrVariable with incompatible value returns no error")
    21  	}
    22  }