test: prevent regression of hitting out stat aliases

tests/test_hitting_alias_regressions.py

@@ -0,0 +1,33 @@
+from mlbstatsapi.models.stats.hitting import AdvancedHittingSplit, SimpleHittingSplit
+
+
+def test_simple_hitting_split_populates_out_stats_from_mlb_aliases():
+    stat = SimpleHittingSplit(
+        flyOuts=101,
+        groundOuts=202,
+        airOuts=303,
+        strikeOuts=404,
+        groundOutsToAirouts="0.667",
+    )
+
+    assert stat.flyouts == 101
+    assert stat.groundouts == 202
+    assert stat.airouts == 303
+    assert stat.strikeouts == 404
+    assert stat.groundouts_to_airouts == "0.667"
+
+
+def test_advanced_hitting_split_populates_out_stats_from_mlb_aliases():
+    stat = AdvancedHittingSplit(
+        walkOffs=2,
+        flyOuts=111,
+        popOuts=22,
+        lineOuts=33,
+        groundOuts=144,
+    )
+
+    assert stat.walkoffs == 2
+    assert stat.flyouts == 111
+    assert stat.popouts == 22
+    assert stat.lineouts == 33
+    assert stat.groundouts == 144