mirror of
https://github.com/google/nomulus.git
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214 lines
8.7 KiB
Java
214 lines
8.7 KiB
Java
// Copyright 2016 The Nomulus 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 java.io.StringWriter;
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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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/** 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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