Start tests for new example class

spacy/tests/test_new_example.py

@@ -0,0 +1,30 @@
+import pytest
+from spacy.gold.new_example import NewExample as Example
+from spacy.tokens import Doc
+from spacy.vocab import Vocab
+
+
+@pytest.fixture
+def vocab():
+    return Vocab()
+
+
+def test_Example_init_requires_doc_objects(vocab):
+    with pytest.raises(TypeError):
+        eg = Example(None, None)
+    with pytest.raises(TypeError):
+        eg = Example(Doc(vocab, words=["hi"]), None)
+    with pytest.raises(TypeError):
+        eg = Example(None, Doc(vocab, words=["hi"]))
+
+
+
+def test_Example_from_dict(vocab):
+    eg = Example.from_dict(
+        Doc(vocab, words=["hello", "world"]),
+        {
+            "words": ["hello", "world"]
+        }
+    )
+    assert isinstance(eg.x, Doc)
+    assert isinstance(eg.y, Doc)