diff --git a/.changeset/cyan-rabbits-double.md b/.changeset/cyan-rabbits-double.md
new file mode 100644
index 0000000..92c0651
--- /dev/null
+++ b/.changeset/cyan-rabbits-double.md
@@ -0,0 +1,5 @@
+---
+"@zazuko/shacl-test": patch
+---
+
+Provide test run summary and exit with nonzero code when no tests are found
diff --git a/README.md b/README.md
index 362a234..bd833dd 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,9 @@ npx shacl-test \
   --command="${COMMAND}"
 ```
 
-Only the `--shapes` option is required. The rest are optional.
+The `--shapes` option is required. 
+Also, you must provide at least `--valid-cases` or `--invalid-cases`, lest no tests are run. 
+The rest are optional.
 
 `--shapes` can be a filesystem path or URL and include [`code:imports`](https://github.com/zazuko/rdf-transform-graph-imports).
 
diff --git a/run.sh b/run.sh
index 10505e9..986a54a 100755
--- a/run.sh
+++ b/run.sh
@@ -66,8 +66,12 @@ loadFullShape() {
   "$SCRIPT_PATH"/load-graph.js "$1" | "$SCRIPT_PATH"/pretty-print.js --prefixes "${prefixes[@]}"
 }
 
+testsRun=0
+
 # iterate over valid cases, run validation and monitor exit code
 for file in $validCases; do
+  testsRun=$((testsRun + 1))
+
   name=$(basename "$file")
   relativePath=$(node -e "console.log(require('path').relative('$WORKING_DIR', '$file'))")
 
@@ -92,6 +96,8 @@ done
 
 # iterate over invalid cases
 for file in $invalidCases; do
+  testsRun=$((testsRun + 1))
+
   name=$(basename "$file")
   relativePath=$(node -e "console.log(require('path').relative('$WORKING_DIR', '$file'))")
 
@@ -116,4 +122,17 @@ for file in $invalidCases; do
   fi
 done
 
+if [ $testsRun -eq 0 ]; then
+  echo "ℹ️ No test cases found"
+  echo "ℹ️ Check if the --valid-cases and --invalid-cases globs match any files"
+  exit 255
+fi
+
+echo "🏁 Tests cases run: $testsRun"
+if [ $FAILED -eq 0 ]; then
+  echo "🎉 All tests passed"
+else
+  echo "❌ Failed $FAILED tests"
+fi
+
 exit $FAILED