test: Add a test for command repeat

This performs a command, then repeats it, and checks that the repeat
happens.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/trace/test-trace.sh b/test/trace/test-trace.sh
index 973063c..3e8651e 100755
--- a/test/trace/test-trace.sh
+++ b/test/trace/test-trace.sh
@@ -5,24 +5,10 @@
 
 # Simple test script for tracing with sandbox
 
-OUTPUT_DIR=sandbox
 TRACE_OPT="FTRACE=1"
 
-fail() {
-	echo "Test failed: $1"
-	if [ -n ${tmp} ]; then
-		rm ${tmp}
-	fi
-	exit 1
-}
-
-build_uboot() {
-	echo "Build sandbox"
-	OPTS="O=${OUTPUT_DIR} ${TRACE_OPT}"
-	NUM_CPUS=$(grep -c processor /proc/cpuinfo)
-	make ${OPTS} sandbox_config
-	make ${OPTS} -s -j${NUM_CPUS}
-}
+BASE="$(dirname $0)/.."
+. $BASE/common.sh
 
 run_trace() {
 	echo "Run trace"
@@ -69,7 +55,7 @@
 echo "Simple trace test / sanity check using sandbox"
 echo
 tmp="$(tempfile)"
-build_uboot
+build_uboot "${TRACE_OPT}"
 run_trace >${tmp}
 check_results ${tmp}
 rm ${tmp}