assertFile(Relay.PREFIX_CLEAN, 10L, metadata.size, "abcdefghij", metadata)
  }

  @Test
  fun readFromFile() {
    val upstream = Buffer()
    upstream.writeUtf8("abcdefghijklmnopqrst")
    val relay = edit(file, upstream, metadata, 5)
    val source1 = relay.newSource()!!.buffer()
    val source2 = relay.newSource()!!.buffer()
    assertThat(source1.readUtf8(10)).isEqualTo("abcdefghij")

	}{
		{
			name:               "lowerAscii",
			expr:               "'ABCDEFGHIJ abcdefghij'.lowerAscii()",
			expectEsimatedCost: checker.CostEstimate{Min: 3, Max: 3},
			expectRuntimeCost:  3,
		},
		{
			name:               "lowerAsciiEquals",
			expr:               "'ABCDEFGHIJ abcdefghij'.lowerAscii() == 'abcdefghij ABCDEFGHIJ'.lowerAscii()",
			expectEsimatedCost: checker.CostEstimate{Min: 7, Max: 9},

	if err != nil {
		panic(err)
	}
	stream := newCipher(block, iv[:])
	test(t, name, cipherText, stream.XORKeyStream)
}
func test(t *testing.T, name string, cipherText []byte, xor func([]byte, []byte)) {
	want := "abcdefghij"
	plainText := []byte(want)
	shorterLen := len(cipherText) / 2
	defer func() {
		err := recover()
		if err == nil {
			t.Errorf("%v XORKeyStream expected to panic on len(dst) < len(src), but didn't", name)
		}

a
ab
abc
abcd
abcde
abcdef
abcdefg
abcdefgh
abcdefghi
abcdefghij
Discard medicine more than two years old.
He who has a shady past knows that nice guys finish last.
I wouldn't marry him with a ten foot pole.
Free! Free!/A trip/to Mars/for 900/empty jars/Burma Shave
The days of the digital watch are numbered.  -Tom Stoppard
Nepal premier won't resign.
For every action there is an equal and opposite government program.

		{10, 20, []string{"0123456789", "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", "klmn"}},         // a whole read
		{0, 5, []string{"\x00\x00\x00\x00\x0056789", "abcdefghij", "klmn"}},                          // start
		{12, 24, []string{"0123456789", "ab\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00"}},   // end
	}
	p := make([]byte, 10)
	for _, test := range tests {

        }
    }

    @Test
    void readerThreadBlocksWhenBufferFull() {
        def source = stream()
        source.onRead { buffer, pos, count ->
            System.arraycopy('abcdefghij'.bytes, 0, buffer, pos, 10)
            expectLater(1)
            return 10
        }
        source.onRead { buffer, pos, count ->
            shouldBeAt(1)
            return -1
        }

	{0x081e0256, "abcdef", "adl\x01\x02M\x01'"},
	{0x0adb02bd, "abcdefg", "adl\x01\x02M\x01'"},
	{0x0e000325, "abcdefgh", "adl\x01\x03\xd8\x01\x8b"},
	{0x118e038e, "abcdefghi", "adl\x01\x03\xd8\x01\x8b"},
	{0x158603f8, "abcdefghij", "adl\x01\x05\xc8\x01\xf0"},
	{0x3f090f02, "Discard medicine more than two years old.", "adl\x01NU\a\x87"},
	{0x46d81477, "He who has a shady past knows that nice guys finish last.", "adl\x01\x89\x8e\t\xe9"},

	{"αβδ", "ΑΒΔ", true},
	{"abc", "xyz", false},
	{"abc", "XYZ", false},
	{"abcdefghijk", "abcdefghijX", false},
	{"abcdefghijk", "abcdefghij\u212A", true},
	{"abcdefghijK", "abcdefghij\u212A", true},
	{"abcdefghijkz", "abcdefghij\u212Ay", false},
	{"abcdefghijKz", "abcdefghij\u212Ay", false},
	{"1", "2", false},
	{"utf-8", "US-ASCII", false},
}

func TestEqualFold(t *testing.T) {

	{0x8b6e21b002d36776, 0x9966f6c89d56ef8e, "abcdefghi", "crc\x02s\xba\x84\x84\xbb\xcd]\xef3gv\xc4 \x00\x00\x00", "crc\x02`&\x9aR\xe1\xb7\xfee<\x9d(YnY`\xba"},
	{0x7f5b6e21b002d367, 0x32093a2ecd5773f4, "abcdefghij", "crc\x02s\xba\x84\x84\xbb\xcd]\xef2\xd3gv\xc4 \x00\x00", "crc\x02`&\x9aR\xe1\xb7\xfee\x04\v\xdfX\xfb\b\x95\xf2"},

	{0xaeef2a50, 0xa9421b7, "abcdefgh", "crc\x01ʇ\x91M\xed\x82\xcd\x11", "crc\x01wB\x84\x81\x92\xc8\n1"},
	{0x8da988af, 0x2ddc99fc, "abcdefghi", "crc\x01ʇ\x91M\xed\x82\xcd\x11", "crc\x01wB\x84\x81\x92\xc8\n1"},
	{0x3981703a, 0xe6599437, "abcdefghij", "crc\x01ʇ\x91M\x85\x87\xd8e", "crc\x01wB\x84\x81\xc4P֗"},
	{0x6b9cdfe7, 0xb2cc01fe, "Discard medicine more than two years old.", "crc\x01ʇ\x91M\xfd\xe5\xc2J", "crc\x01wB\x84\x81S\"(\xe0"},