var testInputrn = []byte("012\r\n345\r\n678\r\n9ab\r\ncde\r\nfgh\r\nijk\r\nlmn\r\nopq\r\nrst\r\nuvw\r\nxy\r\n\n\r\n")

// TestReader wraps a []byte and returns reads of a specific length.
type testReader struct {
	data   []byte
	stride int
}

func (t *testReader) Read(buf []byte) (n int, err error) {
	n = t.stride
	if n > len(t.data) {
		n = len(t.data)
	}
	if n > len(buf) {
		n = len(buf)

	// while most other tools would reject the file or extract a different one ("FILE").
	{
		Name:  "comment-truncated.zip",
		Error: ErrFormat,
	},
}

func TestReader(t *testing.T) {
	for _, zt := range tests {
		t.Run(zt.Name, func(t *testing.T) {
			readTestZip(t, zt)
		})
	}
}

func readTestZip(t *testing.T, zt ZipTest) {
	var z *Reader
	var err error