test/system: Test startup on Rawhide with supported versions

We need to know if the latest changes in the libc (that is dynamically
linked to the binary) causes problems in containers based on older
releases of Fedora.

The estimate of the version numbers is very crude and does not follow
the upstream schedule. That should not be a problem, though.

A part of an existing test has been reused and made into a helper
function to implement this.

This increases the run time of the test suite on Rawhide which already
takes longer than the same test suite on released versions of Fedora.
Make up for it by increasing the timeout by 2 minutes.

containers#899

.zuul.yaml

@@ -35,7 +35,7 @@
 - job:
     name: system-test-fedora-rawhide
     description: Run Toolbox's system tests in Fedora Rawhide
-    timeout: 1200
+    timeout: 1320
     nodeset:
       nodes:
         - name: ci-node-rawhide

test/system/000-setup.bats

@@ -3,10 +3,20 @@
 load 'libs/helpers'
 
 @test "test suite: Setup" {
+    local os_release="$(find_os_release)"
+    local system_id="$(get_system_id)"
+    local system_version="$(get_system_version)"
+
     _setup_environment
     # Cache the default image for the system
-    _pull_and_cache_distro_image $(get_system_id) $(get_system_version) || false
+    _pull_and_cache_distro_image "$system_id" "$system_version" || false
     # Cache all images that will be needed during the tests
     _pull_and_cache_distro_image fedora 32 || false
     _pull_and_cache_distro_image busybox || false
+    # If run on Fedora Rawhide, cache 2 extra images (previous Fedora versions)
+    local rawhide_res="$(awk '/rawhide/' $os_release)"
+    if [ "$system_id" = "fedora" ] && [ -n "$rawhide_res" ]; then
+        _pull_and_cache_distro_image fedora "$((system_version-1))" || false
+        _pull_and_cache_distro_image fedora "$((system_version-2))" || false
+    fi
 }

test/system/103-container.bats

@@ -19,23 +19,30 @@ teardown() {
 
   create_default_container
 
-  run $PODMAN start $CONTAINER_NAME
-
-  CONTAINER_INITIALIZED=0
-
-  for TRIES in 1 2 3 4 5
-  do
-    run $PODMAN logs $CONTAINER_NAME
-    CONTAINER_OUTPUT=$output
-    run grep 'Listening to file system and ticker events' <<< $CONTAINER_OUTPUT
-    if [[ "$status" -eq 0 ]]; then
-      CONTAINER_INITIALIZED=1
-      break
-    fi
-    sleep 1
-  done
-
-  echo $CONTAINER_OUTPUT
-  assert [ "$CONTAINER_INITIALIZED" -eq 1 ]
+  res="$(container_started $CONTAINER_NAME)"
+
+  assert [ "$res" -eq 1 ]
 }
 
+@test "container(Fedora Rawhide): Containers with supported versions start without issues" {
+  local os_release="$(find_os_release)"
+  local system_id="$(get_system_id)"
+  local system_version="$(get_system_version)"
+  local rawhide_res="$(awk '/rawhide/' $os_release)"
+
+  if [ "$system_id" != "fedora" ] || [ -z "$rawhide_res" ]; then
+    skip "This test is only for Fedora Rawhide"
+  fi
+
+  create_distro_container "$system_id" "$system_version" latest
+  res1="$(container_started latest)"
+  assert [ "$res1" -eq 1 ]
+
+  create_distro_container "$system_id" "$((system_version-1))" second
+  res2="$(container_started second)"
+  assert [ "$res2" -eq 1 ]
+
+  create_distro_container "$system_id" "$((system_version-2))" third
+  res3="$(container_started third)"
+  assert [ "$res3" -eq 1 ]
+}

test/system/libs/helpers.bash

@@ -232,6 +232,38 @@ function start_container() {
 }
 
 
+# Checks if a toolbox container started
+#
+# Parameters:
+# ===========
+# - container_name - name of the container
+function container_started() {
+  local container_name
+  container_name="$1"
+
+  run $PODMAN start $container_name
+
+  container_initialized=0
+
+  for TRIES in 1 2 3 4 5
+  do
+    run $PODMAN logs $container_name
+    container_output=$output
+    # Look for last line of the container startup log
+    run grep 'Listening to file system and ticker events' <<< $container_output
+    if [[ "$status" -eq 0 ]]; then
+      container_initialized=1
+      break
+    fi
+    sleep 1
+  done
+
+  echo $container_output >2
+
+  echo $container_initialized
+}
+
+
 function stop_container() {
   local container_name
   container_name="$1"