replicate test_expr_binary for the method versions

Author: CangyuanLi

tests/expr_and_series/binary_test.py

@@ -47,3 +47,48 @@ def test_expr_binary(constructor: Constructor) -> None:
         "m": [1, 9, 4],
     }
     assert_equal_data(result, expected)
+
+
+def test_expr_binary_method(constructor: Constructor) -> None:
+    if "dask" in str(constructor) and DASK_VERSION < (2024, 10):
+        pytest.skip()
+    data = {"a": [1, 3, 2], "b": [4, 4, 6], "z": [7.0, 8.0, 9.0]}
+    df_raw = constructor(data)
+    result = nw.from_native(df_raw).with_columns(
+        a=nw.lit(1).add(nw.lit(3).mul(nw.col("a"))).mul(nw.lit(1).truediv(nw.col("a"))),
+        b=nw.col("z").truediv(nw.lit(2).sub(nw.col("b"))),
+        c=nw.col("a").add(nw.col("b").truediv(2)),
+        d=nw.col("a").sub(nw.col("b")),
+        e=((nw.col("a").gt(nw.col("b"))).and_(nw.col("a").ge(nw.col("z")))).cast(
+            nw.Int64
+        ),
+        f=(
+            (nw.col("a").lt(nw.col("b")))
+            .or_(nw.col("a").le(nw.col("z")))
+            .or_(nw.col("a").eq(1))
+        ).cast(nw.Int64),
+        g=nw.col("a").ne(1),
+        h=(nw.lit(value=False).and_(nw.col("a").ne(1))),
+        i=(nw.lit(value=False).or_(nw.col("a").ne(1))),
+        j=nw.lit(2).pow(nw.col("a")),
+        k=nw.lit(2).floordiv(nw.col("a")),
+        l=nw.col("a").floordiv(2),
+        m=nw.col("a").pow(2),
+    )
+    expected = {
+        "a": [4, 3.333333, 3.5],
+        "b": [-3.5, -4.0, -2.25],
+        "z": [7.0, 8.0, 9.0],
+        "c": [3, 5, 5],
+        "d": [-3, -1, -4],
+        "e": [0, 0, 0],
+        "f": [1, 1, 1],
+        "g": [False, True, True],
+        "h": [False, False, False],
+        "i": [False, True, True],
+        "j": [2, 8, 4],
+        "k": [2, 0, 1],
+        "l": [0, 1, 1],
+        "m": [1, 9, 4],
+    }
+    assert_equal_data(result, expected)