Added unit test
Added unit test case for negative nbins to check the value error.
diff --git a/tensorflow/python/ops/histogram_ops_test.py b/tensorflow/python/ops/histogram_ops_test.py
index 1ee2d3a..fd89ea8 100644
--- a/tensorflow/python/ops/histogram_ops_test.py
+++ b/tensorflow/python/ops/histogram_ops_test.py
@@ -49,6 +49,11 @@
values, value_range, nbins=5, dtype=dtypes.int64)
self.assertEqual(dtypes.int32, bins.dtype)
self.assertAllClose(expected_bins, self.evaluate(bins))
+
+ def test_with_negative_nbins(self):
+ values = [-1.0, 0.0, 1.5, 2.0, 5.0, 15]
+ with self.assertRaisesRegex(ValueError, "nbins should be positive number"):
+ histogram_ops.histogram_fixed_width_bins(values, [1.0, 5.0], nbins=-5)
def test_1d_float64_values_int32_output(self):
# Bins will be:
