[Rust] added test for issue 984

build.gradle

@@ -588,6 +588,7 @@ tasks.register('generateRustTestCodecs', JavaExec) {
     args = ['sbe-tool/src/test/resources/issue435.xml',
             'sbe-tool/src/test/resources/issue895.xml',
             'sbe-tool/src/test/resources/issue972.xml',
+            'sbe-tool/src/test/resources/issue984.xml',
             'sbe-tool/src/test/resources/example-bigendian-test-schema.xml',
             'sbe-tool/src/test/resources/nested-composite-name.xml',
     ]

rust/Cargo.toml

@@ -14,6 +14,7 @@ examples_uk_co_real_logic_sbe_benchmarks_fix = { path = "../generated/rust/uk_co
 issue_435 = { path = "../generated/rust/issue435" }
 issue_895 = { path = "../generated/rust/issue895" }
 issue_972 = { path = "../generated/rust/issue972" }
+issue_984 = { path = "../generated/rust/issue984" }
 baseline_bigendian = { path = "../generated/rust/baseline-bigendian" }
 nested_composite_name = { path = "../generated/rust/nested-composite-name" }
 

rust/benches/md_benchmark.rs

@@ -1,6 +1,6 @@
 use criterion::{black_box, criterion_group, criterion_main, Criterion};
 use examples_uk_co_real_logic_sbe_benchmarks_fix::{
-    market_data_incremental_refresh_trades_codec::{*, encoder::*},
+    market_data_incremental_refresh_trades_codec::{encoder::*, *},
     match_event_indicator::*,
     md_update_action::*,
     message_header_codec::*,

rust/tests/issue_435_test.rs

@@ -1,7 +1,6 @@
-use ::issue_435::*;
 use issue_435::{
     enum_ref::EnumRef, issue_435_codec::*, message_header_codec::MessageHeaderDecoder,
-    set_ref::SetRef,
+    set_ref::SetRef, *,
 };
 
 fn create_encoder(buffer: &mut Vec<u8>) -> Issue435Encoder {

rust/tests/issue_984_test.rs

@@ -0,0 +1,47 @@
+use issue_984::{
+    message_header_codec::MessageHeaderDecoder,
+    simple_message_codec::{encoder::MyGroupEncoder, *},
+    *,
+};
+
+fn create_encoder(buffer: &mut Vec<u8>) -> SimpleMessageEncoder {
+    let simple_msg = SimpleMessageEncoder::default().wrap(
+        WriteBuf::new(buffer.as_mut_slice()),
+        message_header_codec::ENCODED_LENGTH,
+    );
+    let mut header = simple_msg.header(0);
+    header.parent().unwrap()
+}
+
+#[test]
+fn round_trip() -> SbeResult<()> {
+    // encode...
+    let mut buffer = vec![0u8; 256];
+    let mut simple_msg_encoder = create_encoder(&mut buffer);
+    simple_msg_encoder.id(1985);
+
+    let mut my_grp_encoder = simple_msg_encoder.my_group_encoder(1, MyGroupEncoder::default());
+    my_grp_encoder.advance()?;
+    my_grp_encoder.f1(&[1, 2, 3, 4]);
+    my_grp_encoder.f2(&[1, 2, 3, 4, 5]);
+    my_grp_encoder.f3(&[1, 2, 3, 4, 5, 6]);
+
+    // decode...
+    let buf = ReadBuf::new(buffer.as_slice());
+    let header = MessageHeaderDecoder::default().wrap(buf, 0);
+    assert_eq!(SBE_BLOCK_LENGTH, header.block_length());
+    assert_eq!(SBE_SCHEMA_VERSION, header.version());
+    assert_eq!(SBE_TEMPLATE_ID, header.template_id());
+    assert_eq!(SBE_SCHEMA_ID, header.schema_id());
+
+    let simple_msg_decoder = SimpleMessageDecoder::default().header(header);
+    assert_eq!(1985, simple_msg_decoder.id());
+    let mut grp_decoder = simple_msg_decoder.my_group_decoder();
+    assert_eq!(1, grp_decoder.count());
+    grp_decoder.advance()?;
+
+    assert_eq!([1, 2, 3, 4], grp_decoder.f1());
+    assert_eq!([1, 2, 3, 4, 5], grp_decoder.f2());
+    assert_eq!([1, 2, 3, 4, 5, 6], grp_decoder.f3());
+    Ok(())
+}

sbe-tool/src/test/resources/issue984.xml

@@ -0,0 +1,31 @@
+<sbe:messageSchema
+    xmlns:sbe="http://fixprotocol.io/2016/sbe"
+    package="issue984"
+    id="984"
+    version="3"
+    semanticVersion="5.0.0"
+    byteOrder="littleEndian">
+  <types>
+    <type name="String4" length="4" primitiveType="char" semanticType="String"/>
+    <type name="String5" length="5" primitiveType="char" sinceVersion="2" semanticType="String"/>
+    <type name="String6" length="6" primitiveType="char" sinceVersion="3" semanticType="String"/>
+    <composite name="groupSize" description="Repeating group dimensions" semanticType="NumInGroup">
+      <type name="blockLength" primitiveType="uint16"/>
+      <type name="numInGroup" primitiveType="uint8"/>
+    </composite>
+    <composite name="messageHeader">
+      <type name="blockLength" primitiveType="uint16"/>
+      <type name="templateId" primitiveType="uint16" description="Template ID used to encode the message."/>
+      <type name="schemaId" primitiveType="uint16" description="ID of the system publishing the message."/>
+      <type name="version" primitiveType="uint16" description="Schema version."/>
+    </composite>
+  </types>
+  <sbe:message name="SimpleMessage" id="1">
+    <field name="id" id="2" type="uint16" semanticType="Int"/>
+    <group name="MyGroup" id="3" blockLength="15" dimensionType="groupSize">
+      <field name="f1" id="4" type="String4" offset="0" semanticType="String"/>
+      <field name="f2" id="5" type="String5" offset="4" semanticType="String"/>
+      <field name="f3" id="6" type="String6" offset="9" semanticType="String"/>
+    </group>
+  </sbe:message>
+</sbe:messageSchema>