mirror of
https://github.com/google/nomulus.git
synced 2025-05-01 04:27:51 +02:00
c458c05801
The dark lord Gosling designed the Java package naming system so that ownership flows from the DNS system. Since we own the domain name registry.google, it seems only appropriate that we should use google.registry as our package name.
216 lines
8.7 KiB
Java
216 lines
8.7 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.util;
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import static com.google.common.truth.Truth.assertThat;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import google.registry.testing.ExceptionRule;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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import java.io.StringWriter;
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/** Unit tests for {@link HexDumper}. */
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@RunWith(JUnit4.class)
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public class HexDumperTest {
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@Rule
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public final ExceptionRule thrown = new ExceptionRule();
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@Test
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public void testEmpty() throws Exception {
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String input = "";
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String output = "[0 bytes total]\n";
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assertThat(input).isEmpty();
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assertThat(HexDumper.dumpHex(input.getBytes())).isEqualTo(output);
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}
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@Test
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public void testOneLine() throws Exception {
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String input = "hello world";
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String output = "[11 bytes total]\n"
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+ "00000000 68 65 6c 6c 6f 20 77 6f 72 6c 64 hello world \n";
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assertThat(input).hasLength(11);
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assertThat(HexDumper.dumpHex(input.getBytes())).isEqualTo(output);
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}
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@Test
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public void testMultiLine() throws Exception {
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String input = ""
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+ "\n"
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+ "Maids heard the goblins cry:\n"
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+ "\"Come buy our orchard fruits,\n"
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+ "\"Come buy, come buy:\n";
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String output = "[81 bytes total]\n"
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+ "00000000 0a 4d 61 69 64 73 20 68 65 61 72 64 20 74 68 65 .Maids heard the\n"
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+ "00000016 20 67 6f 62 6c 69 6e 73 20 63 72 79 3a 0a 22 43 goblins cry:.\"C\n"
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+ "00000032 6f 6d 65 20 62 75 79 20 6f 75 72 20 6f 72 63 68 ome buy our orch\n"
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+ "00000048 61 72 64 20 66 72 75 69 74 73 2c 0a 22 43 6f 6d ard fruits,.\"Com\n"
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+ "00000064 65 20 62 75 79 2c 20 63 6f 6d 65 20 62 75 79 3a e buy, come buy:\n"
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+ "00000080 0a . \n";
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assertThat(input).hasLength(81);
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assertThat(HexDumper.dumpHex(input.getBytes())).isEqualTo(output);
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}
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@Test
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public void testFullLine() throws Exception {
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String input = "hello worldddddd";
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String output = "[16 bytes total]\n"
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+ "00000000 68 65 6c 6c 6f 20 77 6f 72 6c 64 64 64 64 64 64 hello worldddddd\n";
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assertThat(input).hasLength(16);
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assertThat(HexDumper.dumpHex(input.getBytes())).isEqualTo(output);
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}
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@Test
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public void testUnicode() throws Exception {
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String input = "(◕‿◕)";
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String output = "[11 bytes total]\n"
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+ "00000000 28 e2 97 95 e2 80 bf e2 97 95 29 (.........) \n";
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assertThat(input).hasLength(5);
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assertThat(HexDumper.dumpHex(input.getBytes(UTF_8))).isEqualTo(output);
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}
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@Test
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public void testRainbow() throws Exception {
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byte[] input = new byte[256];
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for (int n = 0; n < 256; ++n) {
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input[n] = (byte) n;
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}
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String output = "[256 bytes total]\n"
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+ "00000000 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f ................\n"
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+ "00000016 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f ................\n"
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+ "00000032 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f !\"#$%&'()*+,-./\n"
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+ "00000048 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 0123456789:;<=>?\n"
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+ "00000064 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO\n"
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+ "00000080 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f PQRSTUVWXYZ[\\]^_\n"
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+ "00000096 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f `abcdefghijklmno\n"
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+ "00000112 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f pqrstuvwxyz{|}~.\n"
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+ "00000128 80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f ................\n"
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+ "00000144 90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f ................\n"
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+ "00000160 a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af ................\n"
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+ "00000176 b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf ................\n"
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+ "00000192 c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf ................\n"
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+ "00000208 d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df ................\n"
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+ "00000224 e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef ................\n"
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+ "00000240 f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff ................\n";
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assertThat(HexDumper.dumpHex(input)).isEqualTo(output);
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}
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@Test
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public void testLineBuffering() throws Exception {
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// Assume that we have some data that's N bytes long.
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byte[] data = "Sweet to tongue and sound to eye; Come buy, come buy.".getBytes();
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// And a streaming HexDumper that displays N+1 characters per row.
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int perLine = data.length + 1;
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try (StringWriter out = new StringWriter();
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HexDumper dumper = new HexDumper(out, perLine, 0)) {
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// Constructing the object does not cause it to write anything to our upstream device.
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assertThat(out.toString()).isEmpty();
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// And then we write N bytes to the hex dumper.
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dumper.write(data);
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// But it won't output any hex because it's buffering a line of output internally.
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assertThat(out.toString()).isEmpty();
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// But one more byte will bring the total to N+1, thereby flushing a line of hexdump output.
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dumper.write(0);
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assertThat(out.toString()).isEqualTo(""
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+ "00000000 53 77 65 65 74 20 74 6f 20 74 6f 6e 67 75 65 20 61 6e 64 20 73 6f 75 6e 64 "
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+ "20 74 6f 20 65 79 65 3b 20 43 6f 6d 65 20 62 75 79 2c 20 63 6f 6d 65 20 62 75 79 2e "
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+ "00 Sweet to tongue and sound to eye; Come buy, come buy..\n");
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// No additional data will need to be written upon close.
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int oldTotal = out.toString().length();
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assertThat(out.toString().length()).isEqualTo(oldTotal);
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}
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}
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@Test
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public void testFlush() throws Exception {
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try (StringWriter out = new StringWriter();
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HexDumper dumper = new HexDumper(out)) {
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dumper.write("hello ".getBytes());
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assertThat(out.toString()).isEmpty();
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dumper.flush();
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assertThat(out.toString()).isEqualTo("00000000 68 65 6c 6c 6f 20 ");
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dumper.write("world".getBytes());
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assertThat(out.toString()).isEqualTo("00000000 68 65 6c 6c 6f 20 ");
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dumper.flush();
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assertThat(out.toString()).isEqualTo("00000000 68 65 6c 6c 6f 20 77 6f 72 6c 64 ");
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dumper.close();
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assertThat(out.toString()).isEqualTo(
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"00000000 68 65 6c 6c 6f 20 77 6f 72 6c 64 hello world \n");
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}
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}
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@Test
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public void testPerLineIsOne() throws Exception {
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String input = "hello";
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String output = "[5 bytes total]\n"
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+ "00000000 68 h\n"
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+ "00000001 65 e\n"
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+ "00000002 6c l\n"
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+ "00000003 6c l\n"
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+ "00000004 6f o\n";
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assertThat(HexDumper.dumpHex(input.getBytes(), 1, 0)).isEqualTo(output);
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}
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@Test
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public void testBadArgumentPerLineZero() throws Exception {
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HexDumper.dumpHex(new byte[1], 1, 0);
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thrown.expect(IllegalArgumentException.class);
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HexDumper.dumpHex(new byte[1], 0, 0);
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}
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@Test
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public void testBadArgumentPerLineNegative() throws Exception {
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HexDumper.dumpHex(new byte[1], 1, 0);
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thrown.expect(IllegalArgumentException.class);
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HexDumper.dumpHex(new byte[1], -1, 0);
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}
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@Test
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public void testBadArgumentPerGroupNegative() throws Exception {
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HexDumper.dumpHex(new byte[1], 1, 0);
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thrown.expect(IllegalArgumentException.class);
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HexDumper.dumpHex(new byte[1], 1, -1);
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}
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@Test
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public void testBadArgumentPerGroupGreaterThanOrEqualToPerLine() throws Exception {
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HexDumper.dumpHex(new byte[1], 1, 0);
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HexDumper.dumpHex(new byte[1], 2, 1);
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thrown.expect(IllegalArgumentException.class);
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HexDumper.dumpHex(new byte[1], 1, 1);
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}
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@Test
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public void testBadArgumentBytesIsNull() throws Exception {
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HexDumper.dumpHex(new byte[1]);
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thrown.expect(NullPointerException.class);
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HexDumper.dumpHex(null);
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}
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@Test
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public void testMultiClose() throws Exception {
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try (StringWriter out = new StringWriter();
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HexDumper dumper = new HexDumper(out)) {
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dumper.close();
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dumper.close();
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out.close();
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}
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}
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}
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