Update PR based on comments

Author: beyarkay

doc/whatsnew/v0.12.0.rst

@@ -100,6 +100,8 @@ Other updates
 
 - |Fix| Improved robustness to numerical errors in :func:`kdeplot` (:pr:`2862`).
 
+- |Fix| Fixed a bug where :func:`rugplot` was ignoring expand_margins=False (:pr:`2953`).
+
 - |Defaults| The `patch.facecolor` rc param is no longer set by :func:`set_palette` (or :func:`set_theme`). This should have no general effect, because the matplotlib default is now `"C0"` (:pr:`2906`).
 
 - |Deps| Made `scipy` an optional dependency and added `pip install seaborn[stats]` as a method for ensuring the availability of compatible `scipy` and `statsmodels` libraries at install time. This has a few minor implications for existing code, which are explained in the Github pull request (:pr:`2398`).

tests/test_distributions.py

@@ -305,17 +305,15 @@ def test_expand_margins(self, flat_array):
         assert x1 == x2
         assert y1 + height * 2 == pytest.approx(y2)
 
-    def test_multiple_rugs(self, long_df):
+    def test_multiple_rugs(self):
 
         values = np.linspace(start=0, stop=1, num=5)
-        ax = lineplot(x=values, y=values)
-        rugplot(x=values, ax=ax)
+        ax = rugplot(x=values)
         ylim = ax.get_ylim()
 
-        for j in range(4):
-            rugplot(x=values, ax=ax, expand_margins=False)
+        rugplot(x=values, ax=ax, expand_margins=False)
 
-        assert_array_equal(ylim, ax.get_ylim())
+        assert ylim == ax.get_ylim()
 
     def test_matplotlib_kwargs(self, flat_series):