Create test_exceptions.py

tests/test_exceptions.py

@@ -0,0 +1,48 @@
+import pytest
+
+from protosaurus import Context
+from base64 import b64decode
+
+
+if __name__ == "__main__":
+    pytest.main()
+
+
+@pytest.fixture
+def ctx():
+    return Context()
+
+
+def test_invalid_proto(ctx):
+    with pytest.raises(RuntimeError):
+        ctx.add_proto('test',
+        """
+        syntax = "proto3";
+        message test {
+            data;
+        }
+        """)
+
+def test_invalid_message_type(ctx):
+    with pytest.raises(RuntimeError):
+        ctx.add_proto('test',
+        """
+        syntax = "proto3";
+        message test {
+            bool data = 1;
+        }
+        """)
+
+        ctx.as_json('invalid type', b64decode('CAE='))
+
+def test_invalid_data(ctx):
+    with pytest.raises(RuntimeError):
+        ctx.add_proto('test',
+        """
+        syntax = "proto3";
+        message test {
+            bool data = 1;
+        }
+        """)
+
+        ctx.as_json('test', b'invalid data')