| 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.assertEquals; |
| |
| import eu.mulk.jgvariant.core.Value.Array; |
| import eu.mulk.jgvariant.core.Value.Bool; |
| import eu.mulk.jgvariant.core.Value.Int32; |
| import eu.mulk.jgvariant.core.Value.Int8; |
| import eu.mulk.jgvariant.core.Value.Maybe; |
| import eu.mulk.jgvariant.core.Value.Str; |
| import eu.mulk.jgvariant.core.Value.Structure; |
| 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.ofStr(UTF_8); |
| assertEquals(new Str("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.ofStr(UTF_8)); |
| assertEquals( |
| new Maybe<>(Optional.of(new Str("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( |
| new Array<>(List.of(Bool.TRUE, Bool.FALSE, Bool.FALSE, Bool.TRUE, Bool.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(Str s, Int32 i) {} |
| |
| var decoder = Decoder.ofStructure(TestRecord.class, Decoder.ofStr(UTF_8), Decoder.ofInt32()); |
| assertEquals( |
| new Structure<>(new TestRecord(new Str("foo"), new Int32(-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(Str s, Int32 i) {} |
| |
| var decoder = |
| Decoder.ofArray( |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofStr(UTF_8), |
| Decoder.ofInt32().withByteOrder(LITTLE_ENDIAN))); |
| assertEquals( |
| new Array<>( |
| List.of( |
| new Structure<>(new TestRecord(new Str("hi"), new Int32(-2))), |
| new Structure<>(new TestRecord(new Str("bye"), new Int32(-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.ofStr(UTF_8)); |
| assertEquals( |
| new Array<>(List.of(new Str("i"), new Str("can"), new Str("has"), new Str("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(Int8 b, Str s) {} |
| record TestParent(Structure<TestChild> tc, Array<Str> as) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestParent.class, |
| Decoder.ofStructure(TestChild.class, Decoder.ofInt8(), Decoder.ofStr(UTF_8)), |
| Decoder.ofArray(Decoder.ofStr(UTF_8))); |
| |
| assertEquals( |
| new Structure<>( |
| new TestParent( |
| new Structure<>(new TestChild(new Int8((byte) 0x69), new Str("can"))), |
| new Array<>(List.of(new Str("has"), new Str("strings?"))))), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testSimpleStructure() { |
| var data = new byte[] {0x60, 0x70}; |
| |
| record TestRecord(Int8 b1, Int8 b2) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofInt8().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofInt8().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals( |
| new Structure<>(new TestRecord(new Int8((byte) 0x60), new Int8((byte) 0x70))), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testPaddedStructureRight() { |
| var data = new byte[] {0x60, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00}; |
| |
| record TestRecord(Int32 b1, Int8 b2) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofInt32().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofInt8().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals( |
| new Structure<>(new TestRecord(new Int32(0x60), new Int8((byte) 0x70))), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testPaddedStructureLeft() { |
| var data = new byte[] {0x60, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00}; |
| |
| record TestRecord(Int8 b1, Int32 b2) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofInt8().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofInt32().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals( |
| new Structure<>(new TestRecord(new Int8((byte) 0x60), new Int32(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(Int32 b1, Int8 b2) {} |
| |
| var decoder = |
| Decoder.ofArray( |
| Decoder.ofStructure( |
| TestRecord.class, |
| Decoder.ofInt32().withByteOrder(LITTLE_ENDIAN), |
| Decoder.ofInt8().withByteOrder(LITTLE_ENDIAN))); |
| |
| assertEquals( |
| new Array<>( |
| List.of( |
| new Structure<>(new TestRecord(new Int32(96), new Int8((byte) 0x70))), |
| new Structure<>(new TestRecord(new Int32(648), new Int8((byte) 0xf7))))), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| |
| @Test |
| void testByteArray() { |
| var data = new byte[] {0x04, 0x05, 0x06, 0x07}; |
| |
| var decoder = Decoder.ofArray(Decoder.ofInt8()); |
| |
| assertEquals( |
| new Array<>( |
| List.of( |
| new Int8((byte) 0x04), |
| new Int8((byte) 0x05), |
| new Int8((byte) 0x06), |
| new Int8((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.ofInt32().withByteOrder(LITTLE_ENDIAN)); |
| |
| assertEquals( |
| new Array<>(List.of(new Int32(4), new Int32(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(Str key, Int32 value) {} |
| |
| var decoder = |
| Decoder.ofStructure( |
| TestEntry.class, Decoder.ofStr(UTF_8), Decoder.ofInt32().withByteOrder(LITTLE_ENDIAN)); |
| assertEquals( |
| new Structure<>(new TestEntry(new Str("a key"), new Int32(514))), |
| decoder.decode(ByteBuffer.wrap(data))); |
| } |
| } |