Add smoke test

tests/smoke.fmf

@@ -0,0 +1,7 @@
+require:
+  - openscap-report
+summary: Basic smoke test
+test: ./smoke.sh
+tag:
+  - smoke
+tier: 0

tests/smoke.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+# Test of the basic function
+
+set -e -o pipefail
+
+# Generate report
+oscap-report < ./test_data/arf-report.xml > report.html
+
+# Search for some rule ID in the report
+grep -q "xccdf_org\.ssgproject\.content_rule_enable_fips_mode" report.html
+
+rm report.html
+
+echo "Report generation success"