fmf: Run tests with firefox

Chromium has started to crash in current Fedora, and is not easily
available in RHEL.

Install bzip2 to unpack the nightly tarball.

test/browser/browser.sh

@@ -12,15 +12,12 @@ LOGS="$(pwd)/logs"
 mkdir -p "$LOGS"
 chmod a+w "$LOGS"
 
-# install browser; on RHEL, use chromium from epel
-# HACK: chromium-headless ought to be enough, but version 88 has a crash: https://bugs.chromium.org/p/chromium/issues/detail?id=1170634
-if ! rpm -q chromium; then
-    if grep -q 'ID=.*rhel' /etc/os-release; then
-        dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
-        dnf config-manager --enable epel
-    fi
-    dnf install -y chromium
-fi
+# install firefox (available everywhere in Fedora and RHEL); install the package to pull in all the dependencies
+# we don't need the H.264 codec, and it is sometimes not available (rhbz#2005760)
+dnf install --disablerepo=fedora-cisco-openh264 -y firefox
+# install nightly for Chrome DevTools Protocol support
+curl --location 'https://download.mozilla.org/?product=firefox-nightly-latest-ssl&os=linux64&lang=en-US' | tar -C /usr/local/lib/ -xj
+ln -s /usr/local/lib/firefox/firefox /usr/local/bin/
 
 # create user account for logging in
 if ! id admin 2>/dev/null; then
@@ -50,7 +47,7 @@ echo core > /proc/sys/kernel/core_pattern
 systemctl enable --now cockpit.socket
 
 # Run tests as unprivileged user
-su - -c "env SOURCE=$SOURCE LOGS=$LOGS $TESTS/run-test.sh" runtest
+su - -c "env TEST_BROWSER=firefox SOURCE=$SOURCE LOGS=$LOGS $TESTS/run-test.sh" runtest
 
 RC=$(cat $LOGS/exitcode)
 exit ${RC:-1}

test/browser/main.fmf

@@ -4,6 +4,7 @@ require:
   - cockpit-starter-kit
   - cockpit-ws
   - cockpit-system
+  - bzip2
   - git
   - glibc-langpack-de
   - libvirt-python3