1 files changed, 20 insertions, 0 deletions
diff --git a/tests/test_diff.sh b/tests/test_diff.sh
new file mode 100644
index 0000000..44e00d0
--- /dev/null
+++ b/tests/test_diff.sh
@@ -0,0 +1,20 @@
+cat > main.c
+
+"$p4dcc" < main.c > main.s
+if [[ $? -ne 0 ]]; then
+    cat main.s >&2
+    exit 1
+fi
+gcc -Wl,-z,noexecstack -o a.out main.s
+if [[ ! -f input ]]; then
+    touch input
+fi
+./a.out < input > output
+exit_code=$?
+
+if [[ $exit_code -ne 0 ]]; then
+    echo "invalid exit code: $exit_code" >&2
+    exit 1
+fi
+
+diff -u expected output