perf tests timechart: Add a perf timechart test

Basic coverage for `perf timechart` doing a record and then a basic
sanity test of the generated SVG file.

Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

diff --git a/tools/perf/tests/shell/timechart.sh b/tools/perf/tests/shell/timechart.sh
new file mode 100755 (executable)
index 0000000..b14b347
--- /dev/null
+++ b/tools/perf/tests/shell/timechart.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+# perf timechart tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+err=0
+perfdata=$(mktemp /tmp/__perf_timechart_test.perf.data.XXXXX)
+output=$(mktemp /tmp/__perf_timechart_test.output.XXXXX.svg)
+
+cleanup() {
+       rm -f "${perfdata}"
+       rm -f "${output}"
+       trap - EXIT TERM INT
+}
+
+trap_cleanup() {
+       echo "Unexpected signal in ${FUNCNAME[1]}"
+       cleanup
+       exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+test_timechart() {
+       echo "Basic perf timechart test"
+
+       # Try to record timechart data.
+       # perf timechart record uses system-wide recording and specific tracepoints.
+       # If it fails (e.g. permissions, missing tracepoints), skip the test.
+       if ! perf timechart record -o "${perfdata}" true > /dev/null 2>&1; then
+               echo "Basic perf timechart test [Skipped: perf timechart record failed (permissions/events?)]"
+               return
+       fi
+
+       # Generate the timechart
+       if ! perf timechart -i "${perfdata}" -o "${output}" > /dev/null 2>&1; then
+               echo "Basic perf timechart test [Failed: perf timechart command failed]"
+               err=1
+               return
+       fi
+
+       # Check if output file exists and is not empty
+       if [ ! -s "${output}" ]; then
+               echo "Basic perf timechart test [Failed: output file is empty or missing]"
+               err=1
+               return
+       fi
+
+       # Check if it looks like an SVG
+       if ! grep -q "svg" "${output}"; then
+               echo "Basic perf timechart test [Failed: output doesn't look like SVG]"
+               err=1
+               return
+       fi
+
+       echo "Basic perf timechart test [Success]"
+}
+
+if ! perf check feature -q libtraceevent ; then
+       echo "perf timechart is not supported. Skip."
+        cleanup
+       exit 2
+fi
+
+test_timechart
+cleanup
+exit $err