[GCU] Add ethernet interface tests

tests/generic_config_updater/test_eth_interface.py

@@ -0,0 +1,148 @@
+import ipaddress
+import logging
+import pytest
+import re
+
+from tests.common.helpers.assertions import pytest_assert
+from tests.generic_config_updater.gu_utils import apply_patch, expect_op_success, expect_op_failure
+from tests.generic_config_updater.gu_utils import generate_tmpfile, delete_tmpfile
+from tests.generic_config_updater.gu_utils import create_checkpoint, delete_checkpoint, rollback_or_reload
+
+logger = logging.getLogger(__name__)
+
+
+@pytest.fixture(autouse=True)
+def ensure_dut_readiness(duthost):
+    """
+    Setup/teardown fixture for each ipv6 test
+    rollback to check if it goes back to starting config
+
+    Args:
+        duthost: DUT host object under test
+    """
+
+    create_checkpoint(duthost)
+
+    yield
+
+    try:
+        logger.info("Rolled back to original checkpoint")
+        rollback_or_reload(duthost)
+    finally:
+        delete_checkpoint(duthost)
+
+
+def check_interface_status(duthost, field):
+    """
+    Returns current status for Ethernet0 of specified field
+
+    Args:
+        duthost: DUT host object under test
+        field: interface field under test
+    """
+
+    cmds = "show interface status Ethernet0"
+    output = duthost.shell(cmds)
+    pytest_assert(not output['rc'])
+    status_data = output["stdout_lines"]
+
+    field_index = status_data[0].split().index(field)
+    status = status_data[2].split()[field_index]
+    return status
+
+
+@pytest.mark.parametrize("index, is_valid", [
+    ("33", True),
+    ("abc1", False)
+])
+def test_update_valid_invalid_index(duthost, ensure_dut_readiness, index, is_valid):
+    json_patch = [
+        {
+            "op": "replace",
+            "path": "/PORT/Ethernet0/index",
+            "value": "{}".format(index)
+        }
+    ]
+
+    tmpfile = generate_tmpfile(duthost)
+    logger.info("tmpfile {}".format(tmpfile))
+
+    try:
+        output = apply_patch(duthost, json_data=json_patch, dest_file=tmpfile)
+        if is_valid:
+            expect_op_success(duthost, output)
+        else:
+            expect_op_failure(output)
+    finally:
+        delete_tmpfile(duthost, tmpfile)
+
+
+@pytest.mark.parametrize("speed, is_valid", [
+    ("20000", True),
+    ("40000", True),
+    ("20a", False)
+])
+def test_update_speed(duthost, ensure_dut_readiness, speed, is_valid):
+    json_patch = [
+        {
+            "op": "replace",
+            "path": "/PORT/Ethernet0/speed",
+            "value": "{}".format(speed)
+        }
+    ]
+
+    tmpfile = generate_tmpfile(duthost)
+    logger.info("tmpfile {}".format(tmpfile))
+
+    try:
+        output = apply_patch(duthost, json_data=json_patch, dest_file=tmpfile)
+        if is_valid:
+            expect_op_success(duthost, output)
+            current_status_speed = check_interface_status(duthost, "Speed").replace("G", "000")
+            pytest_assert(current_status_speed == speed, "Failed to properly configure interface speed to requested value {}".format(speed))
+        else:
+            expect_op_failure(output)
+    finally:
+        delete_tmpfile(duthost, tmpfile)
+
+
+def test_update_description(duthost, ensure_dut_readiness):
+    json_patch = [
+        {
+            "op": "replace",
+            "path": "/PORT/Ethernet0/description",
+            "value": "Updated description"
+        }
+    ]
+
+    tmpfile = generate_tmpfile(duthost)
+    logger.info("tmpfile {}".format(tmpfile))
+
+    try:
+        output = apply_patch(duthost, json_data=json_patch, dest_file=tmpfile)
+        expect_op_success(duthost, output)
+    finally:
+        delete_tmpfile(duthost, tmpfile)
+
+
+@pytest.mark.parametrize("admin_status", ["up", "down"])
+def test_eth_interface_admin_change(duthost, admin_status):
+    json_patch = [
+        {
+            "op": "add",
+            "path": "/PORT/Ethernet0/admin_status",
+            "value": "{}".format(admin_status)
+        }
+    ]
+
+    tmpfile = generate_tmpfile(duthost)
+    logger.info("tmpfile {}".format(tmpfile))
+
+    try:
+        output = apply_patch(duthost, json_data=json_patch, dest_file=tmpfile)
+        expect_op_success(duthost, output)
+
+        running_status = check_interface_status(duthost, "Admin")
+        pytest_assert(admin_status == running_status, "Interface failed to update admin status to {}".format(admin_status))
+    finally:
+        delete_tmpfile(duthost, tmpfile)