Add docker compose based test environment for Linux

.gitignore

@@ -12,3 +12,4 @@ shippable/
 htmlcov/
 .dir-locals.el
 .venv/
+docker-testing/outdir

MAINTAINERS.rst

@@ -11,20 +11,35 @@ Pre-release test plan
 
      git checkout vX.Y-branch
 
-1. Make tox happy on the following first-party platforms:
+1. Make tox happy on the following first-party non-Linux platforms:
 
    - Windows 10
    - the latest macOS
-   - the latest Ubuntu LTS
 
-2. Make tox happy on other popular Linux distributions as resources allow.
-   Doing this in a container is fine.
+   Do this by hand and check for any anomalous warnings in the output.
+   Do not just trust CI.
+
+2. Make tox happy on other popular Linux distributions:
 
    - Arch
-   - the latest Ubuntu release (if different than the latest LTS)
-   - Debian stable (if its Python 3 is still supported)
+   - the latest Ubuntu LTS release
+   - the latest Ubuntu development release
+   - Debian stable
    - Debian testing
-   - Fedora
+   - the latest Fedora release
+   - the latest Fedora rawhide release
+
+   Automated infrastructure for doing this in docker is in the docker-testing
+   directory. Start by updating the Dockerfiles and compose.yaml in that
+   directory if any newer distribution versions should be tested.
+
+   Then, install docker compose in your host Linux environment and run::
+
+     cd docker-testing
+     ./run-tests.sh
+
+   Make sure to check the tox.log files mentioned in the output for any
+   anomalous warnings.
 
 3. Build alpha N (N=1 to start, then N=2 if you need more commits, etc.) and
    upload to pypi. See "Building and uploading the release wheels" below for

docker-testing/README.rst

@@ -0,0 +1,7 @@
+Docker based testing
+--------------------
+
+This directory contains helper files used for running west's tests in Docker on
+various Linux runtimes. It was originally developed for release testing.
+
+Run "./run-tests.sh" in this directory to run the tests.

docker-testing/arch/Dockerfile

@@ -0,0 +1,13 @@
+ARG TARGET
+
+FROM ${TARGET}
+
+ARG TARGET
+ENV WEST_TARGET=${TARGET}
+
+RUN pacman -Syu --noconfirm \
+           git \
+           python-pip \
+    && pacman -Scc --noconfirm
+
+RUN pip3 install --break-system-packages tox

docker-testing/compose.yaml

@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: Apache-2.0
+
+x-common: &common
+  user: ${MY_UID}:${MY_GID}
+  volumes:
+    - /etc/passwd:/etc/passwd:ro
+    - /etc/group:/etc/group:ro
+    - ..:/west
+  command: /west/docker-testing/in-container-test.sh
+  environment:
+    WEST_TOX_OUT: /west/docker-testing/outdir
+    WEST_TOX_OUT_IN_HOST: ${WEST_IN_HOST}/docker-testing/outdir
+
+services:
+  west-archlinux-latest:
+    <<: *common
+    build:
+      args:
+        TARGET: archlinux:latest
+      dockerfile: arch/Dockerfile
+
+  west-debian-stable:
+    <<: *common
+    build:
+      args:
+        TARGET: debian:stable
+      dockerfile: debian/Dockerfile
+
+  west-debian-testing:
+    <<: *common
+    build:
+      args:
+        TARGET: debian:testing
+      dockerfile: debian/Dockerfile
+
+  west-fedora-latest:
+    <<: *common
+    build:
+      args:
+        TARGET: fedora:latest
+      dockerfile: fedora/Dockerfile
+
+  west-fedora-rawhide:
+    <<: *common
+    build:
+      args:
+        TARGET: fedora:rawhide
+      dockerfile: fedora/Dockerfile
+
+  west-ubuntu-latest:
+    <<: *common
+    build:
+      args:
+        TARGET: ubuntu:latest
+      dockerfile: debian/Dockerfile
+
+  west-ubuntu-devel:
+    <<: *common
+    build:
+      args:
+        TARGET: ubuntu:devel
+      dockerfile: debian/Dockerfile

docker-testing/debian/Dockerfile

@@ -0,0 +1,14 @@
+ARG TARGET
+
+FROM ${TARGET}
+
+ARG TARGET
+ENV WEST_TARGET=${TARGET}
+
+RUN apt-get update \
+    && apt-get install -y \
+        git \
+        python3-pip \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN pip3 install --break-system-packages tox

docker-testing/fedora/Dockerfile

@@ -0,0 +1,13 @@
+ARG TARGET
+
+FROM ${TARGET}
+
+ARG TARGET
+ENV WEST_TARGET=${TARGET}
+
+RUN dnf install -y \
+        git \
+        python3-pip \
+    && dnf clean dbcache
+
+RUN pip3 install tox

docker-testing/in-container-test.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+set -e
+
+# This is the test script that runs in the containers themselves.
+
+WEST=/west
+# Replace semicolon with dash
+WEST_TARGET=${WEST_TARGET//:/-}
+
+WEST_TOX_OUT=$WEST_TOX_OUT/$WEST_TARGET
+WEST_TOX_OUT_IN_HOST=$WEST_TOX_OUT_IN_HOST/$WEST_TARGET
+
+die() {
+    if [ $# -eq 0 ]; then
+        echo "error: $*" >&2
+    else
+        echo "error: unknown error in $0" >&2
+    fi
+    exit 1
+}
+
+main()
+{
+    # Verify the container environment set up meets this script's requirements.
+    [ -n "$WEST_TOX_OUT" ] || die "missing $WEST_TOX_OUT"
+    [ -n "$WEST_TOX_OUT_IN_HOST" ] || die "missing $WEST_TOX_OUT_IN_HOST"
+    [ -d "$WEST" ] || die "missing $WEST in the container"
+
+    TOX_LOG="$WEST_TOX_OUT/tox.log"
+    TOX_LOG_IN_HOST="$WEST_TOX_OUT_IN_HOST/tox.log"
+    WEST_TESTDIR="/tmp/west"
+
+    mkdir "$WEST_TOX_OUT"
+
+    git clone -q "$WEST" "$WEST_TESTDIR" || die "failed to clone west to $WEST_TESTDIR in container"
+    cd "$WEST_TESTDIR"
+
+    echo "running tox, output in $TOX_LOG_IN_HOST in host"
+    tox run >"$TOX_LOG" 2>&1 || die "tox failed, see $TOX_LOG"
+
+    cp -R htmlcov "$WEST_TOX_OUT" || die "failed to copy coverage to $WEST_TOX_OUT_IN_HOST/htmlcov in host"
+}
+
+main "$@"

docker-testing/run-tests.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# This is the top-level test script that runs in the host.
+
+HERE=$(dirname "$0")
+
+[ -d "$HERE/outdir" ] && rm -r "$HERE/outdir"
+
+set -e
+mkdir "$HERE/outdir"
+export MY_UID=$(id -u)
+export MY_GID=$(id -g)
+export WEST_IN_HOST=$(realpath "$HERE/..")
+# Store the final config as reference
+docker-compose config > $HERE/outdir/config.yml
+docker-compose up --force-recreate --build

tox.ini

@@ -37,6 +37,6 @@ setenv =
     # For instance: ./.tox/py3/tmp/
     TOXTEMPDIR={envtmpdir}
 commands =
-  python -m pytest --cov=west {posargs:tests} --basetemp='{envtmpdir}/pytest with space/'
+  python -m pytest --cov-report=html --cov=west {posargs:tests} --basetemp='{envtmpdir}/pytest with space/'
   python -m flake8 --config='{toxinidir}'/tox.ini '{toxinidir}'
   python -m mypy --config-file='{toxinidir}'/tox.ini --package=west