From f4a7d1a423964876208f0caccf0ba7a19d4832a0 Mon Sep 17 00:00:00 2001
From: Motoki Wu <tokestermw@gmail.com>
Date: Tue, 30 Jan 2018 18:29:54 -0800
Subject: [PATCH 1/2] make to sure pass in **cfg to each component when
 training

---
 spacy/language.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/spacy/language.py b/spacy/language.py
index ae62f918a..a2b945c49 100644
--- a/spacy/language.py
+++ b/spacy/language.py
@@ -461,7 +461,8 @@ class Language(object):
             if hasattr(proc, 'begin_training'):
                 proc.begin_training(get_gold_tuples(),
                                     pipeline=self.pipeline,
-                                    sgd=self._optimizer)
+                                    sgd=self._optimizer,
+                                    **cfg)
         return self._optimizer
 
     def evaluate(self, docs_golds, verbose=False):

From 54062b7326b998c0fe3015ae9d78816762d52c25 Mon Sep 17 00:00:00 2001
From: Motoki Wu <tokestermw@gmail.com>
Date: Tue, 30 Jan 2018 18:30:19 -0800
Subject: [PATCH 2/2] added tests for issue #1915

---
 spacy/tests/regression/test_issue1915.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 spacy/tests/regression/test_issue1915.py

diff --git a/spacy/tests/regression/test_issue1915.py b/spacy/tests/regression/test_issue1915.py
new file mode 100644
index 000000000..23cf6dc73
--- /dev/null
+++ b/spacy/tests/regression/test_issue1915.py
@@ -0,0 +1,19 @@
+# coding: utf8
+
+from __future__ import unicode_literals
+from ...language import Language
+
+
+def test_simple_ner():
+    cfg = {
+        'hidden_depth': 2,  # should error out
+    }
+
+    nlp = Language()
+    nlp.add_pipe(nlp.create_pipe('ner'))
+    nlp.get_pipe('ner').add_label('answer')
+    try:
+        nlp.begin_training(**cfg)
+        assert False  # should error out
+    except ValueError:
+        assert True