}
		testReadFrom struct { // ReadFrom(testFile{ops}) == (wantCnt, wantErr)
			ops     fileOps
			wantCnt int64
			wantErr error
		}
		testClose struct { // Close() == wantErr
			wantErr error
		}
		testFnc any // testHeader | testWrite | testReadFrom | testClose
	)

	vectors := []struct {
		file  string // Optional filename of expected output
		tests []testFnc
	}{{

			result := Reverse(tc.input)
			if diff := cmp2.Diff(tc.expected, result); diff != "" {
				t.Errorf("Reverse() mismatch (-want +got):\n%s", diff)
			}
		})
	}
}

func TestClone(t *testing.T) {
	tests := []struct {
		name  string
		slice []interface{}
	}{
		{
			name:  "Empty",
			slice: []interface{}{},
		},
		{
			name:  "Single Element",

		t.Errorf("DeleteFunc: want nil discarded elements, got %v, %v", mem[3], mem[4])
	}
	if mem[5] == nil {
		t.Errorf("DeleteFunc: want unchanged elements beyond original len, got nil")
	}
}

func TestClone(t *testing.T) {
	s1 := []int{1, 2, 3}
	s2 := Clone(s1)
	if !Equal(s1, s2) {
		t.Errorf("Clone(%v) = %v, want %v", s1, s2, s1)
	}
	s1[0] = 4
	want := []int{1, 2, 3}
	if !Equal(s2, want) {