buf = *NewBuffer(testBytes)
	})
	if n > 0 {
		t.Errorf("allocations occurred while shallow copying")
	}
	check(t, "NewBuffer", &buf, testString)
}

func TestNewBufferString(t *testing.T) {
	buf := NewBufferString(testString)
	check(t, "NewBufferString", buf, testString)
}

// Empty buf through repeated reads into fub.
// The initial contents of buf corresponds to the string s.