[RFC PATCH 1/1] selftests/run_kselftest.sh: make each test individually selectable

[Hangbin Liu <liuhangbin@gmail.com>]

Currently, after generating run_kselftest.sh, there is no way to choose
which test we could run. All the tests are listed together and we have
to run all every time. This patch enhanced the run_kselftest.sh to make
the tests individually selectable.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
 tools/testing/selftests/Makefile | 48 +++++++++++++++++++++++++-------
 tools/testing/selftests/lib.mk   |  2 +-
 2 files changed, 39 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 6ec503912bea..3d4bc0071849 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -220,13 +220,9 @@ ifdef INSTALL_PATH
 	@# Ask all targets to emit their test scripts
 	echo "#!/bin/sh" > $(ALL_SCRIPT)
 	echo "BASE_DIR=\$$(realpath \$$(dirname \$$0))" >> $(ALL_SCRIPT)
-	echo "cd \$$BASE_DIR" >> $(ALL_SCRIPT)
 	echo ". ./kselftest/runner.sh" >> $(ALL_SCRIPT)
-	echo "ROOT=\$$PWD" >> $(ALL_SCRIPT)
-	echo "if [ \"\$$1\" = \"--summary\" ]; then" >> $(ALL_SCRIPT)
-	echo "  logfile=\$$BASE_DIR/output.log" >> $(ALL_SCRIPT)
-	echo "  cat /dev/null > \$$logfile" >> $(ALL_SCRIPT)
-	echo "fi" >> $(ALL_SCRIPT)
+	echo "TESTS=\"$(TARGETS)\"" | tr -s "/-" "_" >> $(ALL_SCRIPT)
+	echo "" >> $(ALL_SCRIPT);
 
 	@# While building run_kselftest.sh skip also non-existent TARGET dirs:
 	@# they could be the result of a build failure and should NOT be
@@ -234,15 +230,47 @@ ifdef INSTALL_PATH
 	for TARGET in $(TARGETS); do \
 		BUILD_TARGET=$$BUILD/$$TARGET;	\
 		[ ! -d $(INSTALL_PATH)/$$TARGET ] && echo "Skipping non-existent dir: $$TARGET" && continue; \
-		echo "[ -w /dev/kmsg ] && echo \"kselftest: Running tests in $$TARGET\" >> /dev/kmsg" >> $(ALL_SCRIPT); \
-		echo "cd $$TARGET" >> $(ALL_SCRIPT); \
-		echo -n "run_many" >> $(ALL_SCRIPT); \
+		echo "run_$$TARGET()" | tr -s "/-" "_" >> $(ALL_SCRIPT); \
+		echo "{" >> $(ALL_SCRIPT); \
+		echo -e "\t[ -w /dev/kmsg ] && echo \"kselftest: Running tests in $$TARGET\" >> /dev/kmsg" >> $(ALL_SCRIPT); \
+		echo -e "\tcd $$TARGET" >> $(ALL_SCRIPT); \
+		echo -en "\trun_many" >> $(ALL_SCRIPT); \
 		echo -n "Emit Tests for $$TARGET\n"; \
 		$(MAKE) -s --no-print-directory OUTPUT=$$BUILD_TARGET -C $$TARGET emit_tests >> $(ALL_SCRIPT); \
 		echo "" >> $(ALL_SCRIPT);	    \
-		echo "cd \$$ROOT" >> $(ALL_SCRIPT); \
+		echo -e "\tcd \$$ROOT" >> $(ALL_SCRIPT); \
+		echo "}" >> $(ALL_SCRIPT); \
+		echo "" >> $(ALL_SCRIPT); \
 	done;
 
+	echo "usage()" >> $(ALL_SCRIPT);
+	echo "{" >> $(ALL_SCRIPT);
+	echo -e "\tcat <<EOF" >> $(ALL_SCRIPT);
+	echo "usage: \$${0##*/} OPTS" >> $(ALL_SCRIPT);
+	echo -e "\t-s | --summary\t\tOnly print summary info and put detailed log in output.log" >> $(ALL_SCRIPT);
+	echo -e "\t-t | --tests\t\tTest name you want to run specifically" >> $(ALL_SCRIPT);
+	echo -e "\t-h | --help\t\tShow this usage info" >> $(ALL_SCRIPT);
+	echo "EOF" >> $(ALL_SCRIPT);
+	echo "}" >> $(ALL_SCRIPT);
+	echo "" >> $(ALL_SCRIPT);
+
+	echo "while true; do" >> $(ALL_SCRIPT);
+	echo -e "\tcase \"\$$1\" in" >> $(ALL_SCRIPT);
+	echo -e "\t-s | --summary ) logfile=\$$BASE_DIR/output.log; cat /dev/null > \$$logfile; shift ;;" >> $(ALL_SCRIPT);
+	echo -e "\t-t | --tests ) TESTS=\$$2; shift 2 ;;" >> $(ALL_SCRIPT);
+	echo -e "\t-h | --help ) usage; exit 0;;" >> $(ALL_SCRIPT);
+	echo -e "\t\"\" ) break;;" >> $(ALL_SCRIPT);
+	echo -e "\t* ) usage; exit 1;;" >> $(ALL_SCRIPT);
+	echo -e "\tesac" >> $(ALL_SCRIPT);
+	echo "done" >> $(ALL_SCRIPT);
+	echo "" >> $(ALL_SCRIPT);
+
+	echo "cd \$$BASE_DIR" >> $(ALL_SCRIPT)
+	echo "ROOT=\$$PWD" >> $(ALL_SCRIPT)
+
+	echo "for test in \$$TESTS; do" >> $(ALL_SCRIPT); \
+	echo -e "\trun_\$$test" >> $(ALL_SCRIPT); \
+	echo "done" >> $(ALL_SCRIPT); \
 	chmod u+x $(ALL_SCRIPT)
 else
 	$(error Error: set INSTALL_PATH to use install)
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 3ed0134a764d..c352d6dab91d 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -110,7 +110,7 @@ emit_tests:
 	for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
 		BASENAME_TEST=`basename $$TEST`;	\
 		echo "	\\";				\
-		echo -n "	\"$$BASENAME_TEST\"";	\
+		echo -ne "\t\t\"$$BASENAME_TEST\"";	\
 	done;						\
 
 # define if isn't already. It is undefined in make O= case.
-- 
2.19.2