test: regression test installing excluded dependency

Unlike the original regression test which explicitly names the excluded
dependency, this test installs a package that depends on the excluded
package without naming it. Based on the new way we depsolve blueprint
packages in RHEL 8.5, this should now work as well.

test/cases/regression-excluded-dependency.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+
+# This test case verifies that a blueprint can include a package which has a
+# dependency that is listed among "excluded" for a certain image type and
+# osbuild-composer doesn't fail to depsolve this blueprint.
+#
+# The script currently works only for RHEL and CentOS which provide
+# "redhat-lsb-core" package and exclude "nss" package in the image type
+# definition. The testing contains the "redhat-lsb-core" package which can only
+# be installed if the "nss" package isn't excluded
+#
+# Bug report: https://github.com/osbuild/osbuild-composer/issues/921
+
+# NOTE: ONLY WORKS IN RHEL 8.5
+# Get OS data.
+source /etc/os-release
+
+# Provision the software under tet.
+/usr/libexec/osbuild-composer-test/provision.sh
+
+if [[ "${ID}-${VERSION_ID}" != "rhel-8.5" ]]; then
+    echo "$0 is only enabled for rhel-8.5; skipping..."
+    exit 0
+fi
+
+set -xeuo pipefail
+
+# Provision the software under tet.
+BLUEPRINT_FILE=/tmp/blueprint.toml
+COMPOSE_START=/tmp/compose-start.json
+COMPOSE_INFO=/tmp/compose-info.json
+
+# Write a basic blueprint for our image.
+tee "$BLUEPRINT_FILE" > /dev/null << EOF
+name = "redhat-lsb-core"
+description = "A base system with redhat-lsb-core"
+version = "0.0.1"
+
+# The nss package is excluded in the RHEL 8.5 image type and is required by the
+# redhat-lsb-core package. This test verifies the excluded dependency doesn't
+# restrict the installation of the dependant.
+[[packages]]
+name = "redhat-lsb-core"
+EOF
+
+sudo composer-cli blueprints push "$BLUEPRINT_FILE"
+sudo composer-cli blueprints depsolve redhat-lsb-core
+sudo composer-cli --json compose start redhat-lsb-core qcow2 | tee "${COMPOSE_START}"
+COMPOSE_ID=$(jq -r '.build_id' "$COMPOSE_START")
+
+# Wait for the compose to finish.
+echo "⏱ Waiting for compose to finish: ${COMPOSE_ID}"
+while true; do
+    sudo composer-cli --json compose info "${COMPOSE_ID}" | tee "$COMPOSE_INFO" > /dev/null
+    COMPOSE_STATUS=$(jq -r '.queue_status' "$COMPOSE_INFO")
+
+    # Is the compose finished?
+    if [[ $COMPOSE_STATUS != RUNNING ]] && [[ $COMPOSE_STATUS != WAITING ]]; then
+        break
+    fi
+
+    # Wait 30 seconds and try again.
+    sleep 30
+done
+
+jq . "${COMPOSE_INFO}"
+
+# Did the compose finish with success?
+if [[ $COMPOSE_STATUS != FINISHED ]]; then
+    echo "Something went wrong with the compose. 😢"
+    exit 1
+fi