ensure a width of at least 1 for integers, update test

Author: aloctavodia

src/arviz_stats/base/core.py

@@ -210,10 +210,9 @@ def _get_bininfo(self, values, bins="arviz"):
         width_sqrt = (x_max - x_min) / np.sqrt(values.size)
         corr_fd = max(width_fd, width_sqrt / 2)
 
+        width = min(width_sturges, corr_fd)
         if dtype == "i":
-            width = np.round(np.min([1, width_sturges, corr_fd])).astype(int)
-        else:
-            width = min(width_sturges, corr_fd)
+            width = np.round(max(1, width)).astype(int)
 
         return x_min, x_max, width
 

tests/base/test_array.py

@@ -376,7 +376,7 @@ def test_get_bins_basic(self, array_stats, rng):
         ary = rng.normal(size=(100,))
         bins = array_stats.get_bins(ary)
         assert bins.ndim == 1
-        assert len(bins) == 9
+        assert len(bins) == 10
         assert bins[0] == ary.min()
         assert ary.max() <= bins[-1]