FEAT-modin-project#2013: Simplistic test, just to test the basic appr…

…oach.

Signed-off-by: Itamar Turner-Trauring <itamar@itamarst.org>

modin/pandas/test/dataframe/test_join_sort.py

@@ -309,6 +309,17 @@ def test_merge(test_data, test_data2):
         modin_df.merge("Non-valid type")
 
 
+def test_merge_asof():
+    # Simplest possible test, just to try out the basic approach
+    left = {"a": [1, 5, 10], "left_val": ["a", "b", "c"]}
+    right = {"a": [1, 2, 3, 6, 7], "right_val": [1, 2, 3, 6, 7]}
+    pandas_left, pandas_right = pandas.DataFrame(left), pandas.DataFrame(right)
+    modin_left, modin_right = pd.DataFrame(left), pd.DataFrame(right)
+    pandas_merged = pandas.merge_asof(pandas_left, pandas_right, on="a")
+    modin_merged = pd.merge_asof(modin_left, modin_right, on="a")
+    df_equals(pandas_merged, modin_merged)
+
+
 @pytest.mark.parametrize("axis", [0, 1])
 @pytest.mark.parametrize(
     "ascending", bool_arg_values, ids=arg_keys("ascending", bool_arg_keys)