06abfcf6d9
Now that the back end allows passt/pasta to use different external interfaces for IPv4 and IPv6, use that to do the right thing in the case that the host has IPv4 and IPv6 connectivity via different interfaces. If the user hasn't explicitly chosen an interface, separately search for a suitable external interface for each protocol. As a bonus, this substantially simplifies the external interface probe. It also eliminates a subtle confusing case where in some circumstances we would pick the first interface in interface index order, and sometimes in order of routes returned from netlink. On some network configurations that could cause tests to fail, because the logic in the tests was subtly different (it always used route order). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> |
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|---|---|---|
| .. | ||
| build | ||
| demo | ||
| dhcp | ||
| distro | ||
| env | ||
| icmp | ||
| lib | ||
| ndp | ||
| perf | ||
| tcp | ||
| two_guests | ||
| udp | ||
| valgrind | ||
| .gitignore | ||
| ci | ||
| find-arm64-firmware.sh | ||
| Makefile | ||
| passt.mbuto | ||
| prepare-distro-img.sh | ||
| README.md | ||
| run | ||
| run_demo | ||
| valgrind.supp | ||
Scope
This directory contains test cases for passt and pasta and a simple POSIX shell-based framework to define them, and run them as a suite.
These tests can be run as part of a continuous integration workflow, and are also used to provide short usage demos, with video recording, for passt and pasta basic use cases.
Run
Dependencies
Packages
The tests require some package dependencies commonly available in Linux distributions. If some packages are not available, the test groups that need them will be selectively skipped.
This is a non-exhaustive list of packages that might not commonly be installed on a system, i.e. common utilities such as a shell are not included here.
Example for Debian, and possibly most Debian-based distributions:
build-essential git jq strace iperf3 qemu-system-x86 tmux sipcalc bc
clang-tidy cppcheck isc-dhcp-common psmisc linux-cpupower socat
netcat-openbsd fakeroot lz4 lm-sensors qemu-system-arm qemu-system-ppc
qemu-system-misc qemu-system-x86 valgrind
Other tools
Test measuring request-response and connect-request-response latencies use
neper, which is not commonly packaged by distributions and needs to be built
and installed manually:
git clone https://github.com/google/neper
cd neper; make
cp tcp_crr tcp_rr udp_rr /usr/local/bin
Virtual machine images are built during test executions using mbuto, the shell script is sourced via git as needed, so there's no need to actually install it.
Special requirements for continuous integration and demo modes
Running the test suite as continuous integration or demo modes will record the terminal with the steps being executed, using asciinema(1), and create binary packages.
The following additional packages are commonly needed:
alien asciinema linux-perf tshark
Regular test
Just issue:
./run
from the test directory. Elevated privileges are not needed. Environment
variable settings: DEBUG=1 enables debugging messages, TRACE=1 enables tracing
(further debugging messages), PCAP=1 enables packet captures. Example:
PCAP=1 TRACE=1 ./run
Continuous integration
Issuing:
./ci
will run the whole test suite while recording the execution, and it will also build JavaScript fragments used on http://passt.top/ for performance data tables and links to specific offsets in the captures.
Demo mode
Issuing:
./demo
will run the demo cases under demo, with terminal captures as well.
Framework
The implementation of the testing framework is under lib, and it provides
facilities for terminal and tmux session management, interpretation of test
directives, video recording, and suchlike. Test cases are organised in the
remaining directories.
Test cases can be implemented as POSIX shell scripts, or as a set of directives,
which are not formally documented here, but should be clear enough from the
existing cases. The entry point for interpretation of test directives is
implemented in lib/test.