Add another test for whitespace skipping

Author: ales-erjavec

pandas/tests/io/parser/dtypes/test_dtypes_basic.py

@@ -227,6 +227,24 @@ def decimal_number_check(parser, numeric_decimal, thousands, float_precision):
     assert val == numeric_decimal[1]
 
 
+@pytest.mark.parametrize("float_precision", [None, "legacy", "high", "round_trip"])
+def test_skip_whitespace(c_parser_only, float_precision):
+    DATA = (
+        "id\tnum\n"
+        "1\t1.2 \n"
+        "1\t 2.1\n"
+        "2\t 1\n"
+        "2\t 1.2 \n"
+    )
+    df = c_parser_only.read_csv(
+        StringIO(DATA),
+        float_precision=float_precision,
+        sep="\t", header=0,
+        dtype={1: np.float64},
+    )
+    tm.assert_series_equal(df.iloc[:, 1], pd.Series([1.2, 2.1, 1., 1.2], name="num"))
+
+
 def test_true_values_cast_to_bool(all_parsers):
     # GH#34655
     text = """a,b