diff --git a/tests/test_train.py b/tests/test_train.py
new file mode 100644
--- /dev/null
+++ b/tests/test_train.py
@@ -0,0 +1,42 @@
+import unittest
+from unittest import TestCase
+
+from languedoc.train import merge_ngram_freqs, cross_validate, SampleSet
+
+
+class TestTrain(TestCase):
+	def test_merge_ngram_freqs(self):
+		a = {"a": 3, "b": 1, "c": 4}
+		b = {"b": 1, "c": 5, "d": 9}
+		c = merge_ngram_freqs([a, b])
+		self.assertEqual(c, {"a": 3/8/2, "b": (1/8+1/15)/2, "c": (4/8+5/15)/2, "d": 9/15/2})
+		self.assertEqual(sum(c.values()), 1)
+
+	@unittest.skip
+	def test_crossvalidate(self):
+		pass
+
+
+class TestSampleSet(TestCase):
+	def test_add(self):
+		sample_set = SampleSet("xy")
+		self.assertEqual(sample_set.texts, [])
+		self.assertEqual(sample_set.counts, [])
+
+		sample_set.add("aaab")
+		self.assertEqual(sample_set.texts, ["aaab"])
+		self.assertEqual(sample_set.counts, [{"a": 3, "b": 1, "aa": 2, "ab": 1, "aaa": 1, "aab": 1}])
+
+	def test_create_model(self):
+		sample_set = SampleSet("xy")
+		sample_set.add("aaab")
+		sample_set.add("aab")
+
+		res = sample_set.create_model()
+
+		self.assertEqual(res.language, "xy")
+		self.assertEqual(res.ranked_ngrams, {"a": 0, "aa": 1, "b": 2, "ab": 3, "aab": 4, "aaa": 5})
+
+	@unittest.skip
+	def test_generate_tests(self):
+		pass