SNOW-762783: final test

Author: sfc-gh-fpawlowski

test/integ/test_proxies.py

@@ -43,3 +43,47 @@ def test_put_with_https_proxy(conn_cnx, tmp_path, mitm_proxy, monkeypatch):
 
             ls_result = cur.execute(f"LIST @{stage_name}").fetchall()
             assert len(ls_result) > 0
+
+
+@pytest.mark.skipolddriver
+def test_put_with_https_proxy_and_no_proxy_regression(
+    conn_cnx, tmp_path, mitm_proxy, monkeypatch
+):
+    """SNOW-2865839: PUT fails with TypeError when HTTPS_PROXY and NO_PROXY are set.
+
+    From bug report:
+    "HTTPS_PROXY=http://localhost:8080 NO_PROXY='google.com' python test.py"
+    causes TypeError during PUT operations.
+
+    Bug flow:
+    1. HTTPS_PROXY set (mitmproxy)
+    2. NO_PROXY set with ANY value (e.g., "google.com")
+    3. Execute PUT operation
+    4. storage_client passes bytes URL to use_session()
+    5. Without fix: TypeError: inet_aton() argument 1 must be str, not bytes
+    6. With fix: PUT succeeds
+    """
+    test_file = tmp_path / "test_data.csv"
+    test_file.write_text("col1,col2\n1,2\n3,4\n")
+
+    # Configure environment to use mitmproxy
+    mitm_proxy.set_env_vars(monkeypatch)
+
+    # Set NO_PROXY with arbitrary value (from bug report)
+    monkeypatch.setenv("NO_PROXY", "google.com")
+
+    with conn_cnx(disable_ocsp_checks=True) as conn:
+        with conn.cursor() as cur:
+            stage_name = random_string(5, "test_no_proxy_")
+            cur.execute(f"CREATE TEMPORARY STAGE {stage_name}")
+
+            # This is where the bug occurs - storage_client passes bytes URL
+            put_result = cur.execute(
+                f"PUT 'file://{test_file}' @{stage_name}"
+            ).fetchall()
+
+            assert len(put_result) > 0
+            assert put_result[0][6] == "UPLOADED"
+
+            ls_result = cur.execute(f"LIST @{stage_name}").fetchall()
+            assert len(ls_result) > 0