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72aa379e87
Two real iol-xe containers (Cisco CML iol-runner images, real IOS-XE on the telnet console) against an isolated instance, the real uBridge with the swappable bridge TAP leg: * kernel link reports kernel_datapath; anchors exist from node start and the per-link bridge enslaves exactly the two of them; * real ICMP crosses the [unix <-> tap] port-bridge relay; delay 100 lands as netem on both anchors with the measured RTT growing >= 150 ms and returning < 50 ms when cleared; * suspend admin-downs the anchor and kills the traffic; resume restores; AF_PACKET capture writes a real pcap; * link delete/re-create swaps the port leg out and back in with the ping returning; node stop leaves no gx devices and a start recreates the whole wiring from the NIO; project delete cleans everything; * the relay control on a relay-configured instance keeps the link off the kernel and still pings (anchors may exist idle — the same semantics as QEMU's and Dynamips' anchors: the server flag decides attachment, not anchor birth). Harness: create_iol_router (the appliance's template properties), docker_images, iol_anchor_name, stage_iol_base_config (the shipped iol-xe-base.txt copied into the isolated instance's configs dir — the GNS3_IOL_STARTUP_CONFIG lookup path), boot_wait(straight_prompt=True) for images that boot from NVRAM straight into the CLI with no 'Press RETURN' sentinel, and GNS3_E2E_DEBUG=1 to run the isolated instance with debug logging (the uBridge command stream lands in server.log — how the ensure-anchor EBUSY was pinned down).
59 lines
2.7 KiB
Markdown
59 lines
2.7 KiB
Markdown
<!--
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SPDX-License-Identifier: CC-BY-SA-4.0
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See LICENSE file for licensing information.
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-->
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# Live end-to-end tests
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Tests under this directory run against a **real** server: real uBridge, real
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kernel interfaces (privileged), real emulator binaries and real images. They
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verify what unit tests cannot — that a datapath actually forwards traffic,
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that kernel bridges actually enslave anchors, that tc impairments actually
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shape packets. They are marked `e2e` and **excluded from normal test runs**
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(see `tests/pytest.ini`); run them explicitly:
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```bash
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pytest -m e2e tests/e2e -s # -s shows the progress prints
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pytest -m e2e tests/e2e -k dynamips # one scenario
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```
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Two run modes, chosen per test through `harness.live_server(kernel=...)`:
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* **Target an existing server** — set `GNS3_E2E_URL` (e.g.
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`http://127.0.0.1:3080/v3`, plus `GNS3_E2E_USER`/`GNS3_E2E_PASSWORD`,
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default admin/admin). The server must already be configured for the
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datapath under test (kernel links need `enable_kernel_datapath = True`).
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* **Isolated instance** (the default) — the harness starts its own server
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process on a free port with its own config directory (the controller DB
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and every path follow the config), so nothing on the machine is touched.
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It needs `ubridge`, `dynamips` and an images directory
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(`GNS3_E2E_IMAGES`, default `~/GNS3/images`) available locally.
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Either way each test creates its own project and deletes it again. Set
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`GNS3_E2E_KEEP=1` to keep the project (and a started instance) on failure
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and print where to look at it.
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`harness.py` holds the shared pieces — REST client, server lifecycle, the
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IOS console driver, host-side kernel inspections (bridge membership, tap
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admin state, tc qdiscs) — so a new node type adds only its own scenario
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module.
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Current scenarios:
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* `test_dynamips_kernel_datapath.py` — two real c7200 routers: kernel link
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(anchors, per-link bridge, netem delay, suspend, capture, delete/re-create,
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stop/start) plus a serial link staying on the relay, and a negative
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control on an isolated relay-configured instance.
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* `test_ethernet_switch_kernel_datapath.py` — a real Ethernet switch
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(kernel bridge) between two c7200 routers: deferred joins on boot, VLAN
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isolation, absorbed-anchor filters/suspend/capture, VPCS peers staying on
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the relay, and a relay negative control.
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* `test_iol_docker_kernel_datapath.py` — two real iol-xe containers (Cisco
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CML iol-runner images): kernel link through the port bridge's swappable
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TAP leg (anchors at start, netem delay, suspend, capture, link
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delete/re-create swap, node stop/start rewiring) and a relay negative
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control.
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Set `GNS3_E2E_DEBUG=1` to run the isolated instance with debug logging (the
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uBridge command stream lands in its `server.log`).
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