| package eu.mulk.jgvariant.core; |
| |
| import static java.nio.ByteOrder.LITTLE_ENDIAN; |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static org.junit.jupiter.api.Assertions.assertAll; |
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.Optional; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Tests based on the examples given in <a |
| * href="https://people.gnome.org/~desrt/gvariant-serialisation.pdf">~desrt/gvariant-serialisation.pdf</a>. |
| */ |
| class DecoderTest { |
| |
| @Test |
| void testString() { |
| var data = new byte[] {0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x00}; |
| var decoder = Decoder.ofString(UTF_8); |
| assertEquals("hello world", decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testMaybe() { |
| var data = |
| new byte[] {0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x00, 0x00}; |
| var decoder = Decoder.ofMaybe(Decoder.ofString(UTF_8)); |
| assertEquals(Optional.of("hello world"), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testBooleanArray() { |
| var data = new byte[] {0x01, 0x00, 0x00, 0x01, 0x01}; |
| var decoder = Decoder.ofArray(Decoder.ofBoolean()); |
| assertEquals(List.of(true, false, false, true, true), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testStructure() { |
| var data = |
| new byte[] { |
| 0x66, 0x6F, 0x6F, 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, 0x04 |
| }; |
| |
| record TestRecord(String s, int i) {} |
| |
| var decoder = Decoder.ofStructure(TestRecord.class, Decoder.ofString(UTF_8), Decoder.ofInt()); |
| assertEquals(new TestRecord("foo", -1), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testComplexStructureArray() { |
| var data = |
| new byte[] { |
| 0x68, |
| 0x69, |
| 0x00, |
| 0x00, |
| (byte) 0xfe, |
| (byte) 0xff, |
| (byte) 0xff, |
| (byte) 0xff, |
| 0x03, |
| 0x00, |
| 0x00, |
| 0x00, |
| 0x62, |
| 0x79, |
| 0x65, |
| 0x00, |
| (byte) 0xff, |
| (byte) 0xff, |
| (byte) 0xff, |
| (byte) 0xff, |
| 0x04, |
| 0x09, |
| 0x15 |
| }; |
| |
| record TestRecord(String s, int i) {} |
| |
| var decoder = |
| Decoder.ofArray( |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofString(UTF_8), |
| Decoder.ofInt().withByteOrder(LITTLE_ENDIAN))); |
| assertEquals( |
| List.of(new TestRecord("hi", -2), new TestRecord("bye", -1)), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testStringArray() { |
| var data = |
| new byte[] { |
| 0x69, 0x00, 0x63, 0x61, 0x6E, 0x00, 0x68, 0x61, 0x73, 0x00, 0x73, 0x74, 0x72, 0x69, 0x6E, |
| 0x67, 0x73, 0x3F, 0x00, 0x02, 0x06, 0x0a, 0x13 |
| }; |
| var decoder = Decoder.ofArray(Decoder.ofString(UTF_8)); |
| assertEquals(List.of("i", "can", "has", "strings?"), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testNestedStructure() { |
| var data = |
| new byte[] { |
| 0x69, 0x63, 0x61, 0x6E, 0x00, 0x68, 0x61, 0x73, 0x00, 0x73, 0x74, 0x72, 0x69, 0x6E, 0x67, |
| 0x73, 0x3F, 0x00, 0x04, 0x0d, 0x05 |
| }; |
| |
| record TestChild(byte b, String s) {} |
| record TestParent(TestChild tc, List<String> as) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestParent.class, |
| Decoder.ofStructure(TestChild.class, Decoder.ofByte(), Decoder.ofString(UTF_8)), |
| Decoder.ofArray(Decoder.ofString(UTF_8))); |
| |
| assertEquals( |
| new TestParent(new TestChild((byte) 0x69, "can"), List.of("has", "strings?")), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testNestedStructureVariant() { |
| var data = |
| new byte[] { |
| 0x69, 0x63, 0x61, 0x6E, 0x00, 0x68, 0x61, 0x73, 0x00, 0x73, 0x74, 0x72, 0x69, 0x6E, 0x67, |
| 0x73, 0x3F, 0x00, 0x04, 0x0d, 0x05, 0x00, 0x28, 0x28, 0x79, 0x73, 0x29, 0x61, 0x73, 0x29 |
| }; |
| |
| var decoder = Decoder.ofVariant(); |
| var result = (Object[]) decoder.decode(ByteBuffer.wrap(data)); |
| |
| assertAll( |
| () -> assertEquals(2, result.length), |
| () -> assertArrayEquals(new Object[] {(byte) 0x69, "can"}, (Object[]) result[0]), |
| () -> assertEquals(List.of("has", "strings?"), result[1])); |
| } |
| |
| @Test |
| void testSimpleStructure() { |
| var data = new byte[] {0x60, 0x70}; |
| |
| record TestRecord(byte b1, byte b2) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofByte().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofByte().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals(new TestRecord((byte) 0x60, (byte) 0x70), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testPaddedStructureRight() { |
| var data = new byte[] {0x60, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00}; |
| |
| record TestRecord(int b1, byte b2) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofInt().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofByte().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals(new TestRecord(0x60, (byte) 0x70), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testPaddedStructureLeft() { |
| var data = new byte[] {0x60, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00}; |
| |
| record TestRecord(byte b1, int b2) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofByte().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofInt().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals(new TestRecord((byte) 0x60, 0x70), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testSimpleStructureArray() { |
| var data = |
| new byte[] { |
| 0x60, |
| 0x00, |
| 0x00, |
| 0x00, |
| 0x70, |
| 0x00, |
| 0x00, |
| 0x00, |
| (byte) 0x88, |
| 0x02, |
| 0x00, |
| 0x00, |
| (byte) 0xF7, |
| 0x00, |
| 0x00, |
| 0x00 |
| }; |
| |
| record TestRecord(int b1, byte b2) {} |
| |
| var decoder = |
| Decoder.ofArray( |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofInt().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofByte().withByteOrder(LITTLE_ENDIAN))); |
| |
| assertEquals( |
| List.of(new TestRecord(96, (byte) 0x70), new TestRecord(648, (byte) 0xf7)), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testByteArray() { |
| var data = new byte[] {0x04, 0x05, 0x06, 0x07}; |
| |
| var decoder = Decoder.ofArray(Decoder.ofByte()); |
| |
| assertEquals( |
| List.of((byte) 0x04, (byte) 0x05, (byte) 0x06, (byte) 0x07), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testIntegerArray() { |
| var data = new byte[] {0x04, 0x00, 0x00, 0x00, 0x02, 0x01, 0x00, 0x00}; |
| |
| var decoder = Decoder.ofArray(Decoder.ofInt().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals(List.of(4, 258), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testDictionaryEntry() { |
| var data = |
| new byte[] {0x61, 0x20, 0x6B, 0x65, 0x79, 0x00, 0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x06}; |
| |
| record TestEntry(String key, int value) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestEntry.class, Decoder.ofString(UTF_8), Decoder.ofInt().withByteOrder(LITTLE_ENDIAN)); |
| assertEquals(new TestEntry("a key", 514), decoder.decode(ByteBuffer.wrap(data))); |
| } |
| } |