Function TestByteView

byteview_test.go:27–57

(t *testing.T)

)

func TestByteView(t *testing.T) {
	for _, s := range []string{"", "x", "yy"} {
		for _, v := range []ByteView{of([]byte(s)), of(s)} {
			name := fmt.Sprintf("string %q, view %+v", s, v)
			if v.Len() != len(s) {
				t.Errorf("%s: Len = %d; want %d", name, v.Len(), len(s))
			}
			if v.String() != s {
				t.Errorf("%s: String = %q; want %q", name, v.String(), s)
			}
			var longDest [3]byte
			if n := v.Copy(longDest[:]); n != len(s) {
				t.Errorf("%s: long Copy = %d; want %d", name, n, len(s))
			}
			var shortDest [1]byte
			if n := v.Copy(shortDest[:]); n != min(len(s), 1) {
				t.Errorf("%s: short Copy = %d; want %d", name, n, min(len(s), 1))
			}
			if got, err := ioutil.ReadAll(v.Reader()); err != nil || string(got) != s {
				t.Errorf("%s: Reader = %q, %v; want %q", name, got, err, s)
			}
			if got, err := ioutil.ReadAll(io.NewSectionReader(v, 0, int64(len(s)))); err != nil || string(got) != s {
				t.Errorf("%s: SectionReader of ReaderAt = %q, %v; want %q", name, got, err, s)
			}
			var dest bytes.Buffer
			if _, err := v.WriteTo(&dest); err != nil || !bytes.Equal(dest.Bytes(), []byte(s)) {
				t.Errorf("%s: WriteTo = %q, %v; want %q", name, dest.Bytes(), err, s)
			}
		}
	}
}

// of returns a byte view of the []byte or string in x.
func of(x interface{}) ByteView {