given:
        def tokenSource = new DefaultCancellationTokenSource()
        def distUri = server.uri("cancelled-dist.zip")

        BufferedReader reader = new BufferedReader(new FileReader(distribution.binDistribution))
        def content = new byte[30000] // more than one progress tick in output
        for (i in 0..<content.length) {
            content[i++] = reader.read() as byte
        }

import org.intellij.lang.annotations.Language;
import org.junit.Assert;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.ObjectStreamException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.charset.StandardCharsets;

			testWriteTo{fileOps{int64(1), "abc", int64(2), "defgh", int64(4)}, 15, errUnrefData},
			testRead{100, "", errUnrefData},
			testRemaining{0, 5},
		},
	}}

	for i, v := range vectors {
		var fr fileReader
		switch maker := v.maker.(type) {
		case makeReg:
			r := testNonEmptyReader{strings.NewReader(maker.str)}
			fr = &regFileReader{r, maker.size}
		case makeSparse:

pkg archive/tar, method (*Header) FileInfo() os.FileInfo
pkg archive/zip, const Deflate = 8
pkg archive/zip, const Store = 0
pkg archive/zip, type FileHeader struct, CompressedSize64 uint64
pkg archive/zip, type FileHeader struct, UncompressedSize64 uint64
pkg bufio, const MaxScanTokenSize = 65536
pkg bufio, const MaxScanTokenSize ideal-int
pkg bufio, func NewScanner(io.Reader) *Scanner