test: dm: add button_cmd test
Add a test for the button_cmd feature. This validates that commands can
be mapped to two buttons, that the correct command runs based on which
button is pressed, that only 1 command is run, and that no command runs
if button_cmd_0_name is wrong or unset.
Additionally, fix a potential uninitialised variable use caught by these
tests, the btn variable in get_button_cmd() is assumed to be null if
button_get_by_label() fails, but it's actually used uninitialised in
that case.
CONFIG_BUTTON is now enabled automatically and was removed when running
save_defconfig.
Fixes: e761035b6423 ("boot: add support for button commands")
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index 3be9a00..a62faf7 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -11,6 +11,7 @@
CONFIG_DEBUG_UART=y
CONFIG_SYS_MEMTEST_START=0x00100000
CONFIG_SYS_MEMTEST_END=0x00101000
+CONFIG_BUTTON_CMD=y
CONFIG_FIT=y
CONFIG_FIT_SIGNATURE=y
CONFIG_FIT_VERBOSE=y