Add test of Option<None> enum using a future monster on the wire.

.gitignore

@@ -64,6 +64,7 @@ tests/monsterdata_javascript_wire.mon
 tests/monsterdata_lobster_wire.mon
 tests/monsterdata_rust_wire.mon
 tests/unicode_test.mon
+tests/monsterdata_unknown.mon
 tests/ts/
 tests/php/
 CMakeLists.txt.user

tests/generate_code.bat

@@ -31,6 +31,8 @@ IF NOT "%MONSTER_EXTRA%"=="skip" (
   @echo monster_extra.fbs skipped (the strtod function from MSVC2013 or older doesn't support NaN/Inf arguments)
 )
 
+..\%buildtype%\flatc.exe --binary -I include_test monster_test.fbs monsterdata_unknown.json || goto FAIL
+
 cd ../samples
 ..\%buildtype%\flatc.exe --cpp --lobster --gen-mutable --reflect-names --gen-object-api --gen-compare --cpp-ptr-type flatbuffers::unique_ptr monster.fbs || goto FAIL
 ..\%buildtype%\flatc.exe -b --schema --bfbs-comments --bfbs-builtins monster.fbs || goto FAIL

tests/generate_code.sh

@@ -23,6 +23,9 @@ set -e
 ../flatc --jsonschema --schema -I include_test monster_test.fbs
 ../flatc --cpp --java --kotlin --csharp --python --gen-mutable --reflect-names --gen-object-api --gen-compare --no-includes monster_extra.fbs monsterdata_extra.json
 ../flatc --cpp --java --csharp --python --gen-mutable --reflect-names --gen-object-api --gen-compare --no-includes --scoped-enums --jsonschema --cpp-ptr-type flatbuffers::unique_ptr arrays_test.fbs
+
+../flatc --binary -I include_test monster_test.fbs monsterdata_unknown.json
+
 cd ../samples
 ../flatc --cpp --lobster --gen-mutable --reflect-names --gen-object-api --gen-compare --cpp-ptr-type flatbuffers::unique_ptr monster.fbs
 ../flatc -b --schema --bfbs-comments --bfbs-builtins monster.fbs

tests/monsterdata_unknown.json

@@ -0,0 +1,5 @@
+{
+  name: "FromFuture",
+  // Race=-127 is unknown Race, not defined in the monster_test.fbs schema.
+  signed_enum: -127,
+}

tests/rust_usage_test/tests/integration_test.rs

@@ -2797,6 +2797,17 @@ fn write_example_wire_data_to_file() {
     f.write_all(b.finished_data()).unwrap();
 }
 
+#[test]
+fn binary_data_from_future_source() {
+    let bytes = load_file("../monsterdata_unknown.mon").expect("missing monsterdata_unknown.mon");
+    let correct = my_game::example::monster_buffer_has_identifier(&bytes);
+    assert!(correct);
+
+    let m = my_game::example::get_root_as_monster(&bytes);
+    assert_eq!(m.name(), "FromFuture");
+    assert!(m.signed_enum().is_none());
+}
+
 fn load_file(filename: &str) -> Result<Vec<u8>, std::io::Error> {
     use std::io::Read;
     let mut f = std::fs::File::open(filename)?;