Adding upstream version 1.2+20240521.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/oneof_pattern_matching.py

@@ -0,0 +1,46 @@
+from dataclasses import dataclass
+
+import pytest
+
+import aristaproto
+
+
+def test_oneof_pattern_matching():
+    @dataclass
+    class Sub(aristaproto.Message):
+        val: int = aristaproto.int32_field(1)
+
+    @dataclass
+    class Foo(aristaproto.Message):
+        bar: int = aristaproto.int32_field(1, group="group1")
+        baz: str = aristaproto.string_field(2, group="group1")
+        sub: Sub = aristaproto.message_field(3, group="group2")
+        abc: str = aristaproto.string_field(4, group="group2")
+
+    foo = Foo(baz="test1", abc="test2")
+
+    match foo:
+        case Foo(bar=_):
+            pytest.fail("Matched 'bar' instead of 'baz'")
+        case Foo(baz=v):
+            assert v == "test1"
+        case _:
+            pytest.fail("Matched neither 'bar' nor 'baz'")
+
+    match foo:
+        case Foo(sub=_):
+            pytest.fail("Matched 'sub' instead of 'abc'")
+        case Foo(abc=v):
+            assert v == "test2"
+        case _:
+            pytest.fail("Matched neither 'sub' nor 'abc'")
+
+    foo.sub = Sub(val=1)
+
+    match foo:
+        case Foo(sub=Sub(val=v)):
+            assert v == 1
+        case Foo(abc=v):
+            pytest.fail("Matched 'abc' instead of 'sub'")
+        case _:
+            pytest.fail("Matched neither 'sub' nor 'abc'")