Added smoke tests for errorbar

Author: 0taj

lib/matplotlib/tests/test_datetime.py

@@ -129,11 +129,43 @@ def test_contourf(self):
         fig, ax = plt.subplots()
         ax.contourf(...)
 
-    @pytest.mark.xfail(reason="Test for errorbar not written yet")
     @mpl.style.context("default")
     def test_errorbar(self):
-        fig, ax = plt.subplots()
-        ax.errorbar(...)
+        mpl.rcParams["date.converter"] = "concise" 
+        fig, (ax1, ax2, ax3, ax4) = plt.subplots(4, 1, layout="constrained")
+        limit = 7
+        start_date = datetime.datetime(2023, 1, 1)
+
+        x_dates = np.array([datetime.datetime(2023, 10, delta) for delta in range(1, limit)])
+        y_dates = np.array([datetime.datetime(2023, 10, delta) for delta in range(1, limit)])
+        x_date_error = datetime.timedelta(days=1)
+        y_date_error = datetime.timedelta(days=1)
+
+        x_values = list(range(1, limit))
+        y_values = list(range(1, limit))
+        x_value_error = 0.5
+        y_value_error = 0.5
+
+        ax1.errorbar(x_dates, y_values, 
+                    yerr=y_value_error,
+                    capsize=10,
+                    barsabove=True, 
+                    label='Data')
+        
+        ax2.errorbar(x_values, y_dates, 
+                    xerr=x_value_error, yerr=y_date_error,
+                    errorevery=(1, 2),
+                    fmt='-o', label='Data')
+        
+        ax3.errorbar(x_dates, y_dates, 
+                    xerr=x_date_error, yerr=y_date_error,
+                    lolims=True, xlolims=True,
+                    label='Data')
+        
+        ax4.errorbar(x_dates, y_values, 
+                    xerr=x_date_error, yerr=y_value_error,
+                    uplims=True, xuplims=True,
+                    label='Data')
 
     @pytest.mark.xfail(reason="Test for eventplot not written yet")
     @mpl.style.context("default")