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+#!/bin/bash
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+#
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+# Build system tests
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+#
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+# Just a bash script that tests some likely make failure scenarios in a row
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+# Creates its own test build directory under TMP and cleans it up when done.
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+#
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+# Environment variables:
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+# IDF_PATH - must be set
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+# TMP - can override /tmp location for build directory
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+# ESP_IDF_TEMPLATE_GIT - Can override git clone source for template app. Otherwise github.
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+# NOCLEANUP - Set to '1' if you want the script to leave its temporary directory when done, for post-mortem.
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+#
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+
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+# Set up some variables
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+#
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+[ -z ${TMP} ] && TMP="/tmp"
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+# override ESP_IDF_TEMPLATE_GIT to point to a local dir if you're testing and want fast iterations
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+[ -z ${ESP_IDF_TEMPLATE_GIT} ] && ESP_IDF_TEMPLATE_GIT=https://github.com/espressif/esp-idf-template.git
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+export V=1
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+
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+function run_tests()
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+{
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+ FAILURES=
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+ STATUS="Starting"
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+ print_status "Checking prerequisites"
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+ [ -z ${IDF_PATH} ] && echo "IDF_PATH is not set. Need path to esp-idf installation." && exit 2
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+
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+ print_status "Cloning template..."
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+ git clone ${ESP_IDF_TEMPLATE_GIT} template
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+ cd template
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+
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+ BOOTLOADER_BINS="bootloader/bootloader.elf bootloader/bootloader.bin"
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+ APP_BINS="app-template.elf app-template.bin"
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+
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+ print_status "Initial clean build"
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+ # if make fails here, everything fails
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+ make || exit $?
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+ # check all the expected build artifacts from the clean build
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+ assert_built ${APP_BINS} ${BOOTLOADER_BINS} partitions_singleapp.bin
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+ [ -f ${BUILD}/partition*.bin ] || failure "A partition table should have been built"
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+
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+ print_status "Updating component source file rebuilds component"
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+ # touch a file & do a build
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+ take_build_snapshot
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+ touch ${IDF_PATH}/components/esp32/syscalls.c
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+ make || failure "Failed to partial build"
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+ assert_rebuilt ${APP_BINS} esp32/libesp32.a esp32/syscalls.o
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+ assert_not_rebuilt lwip/liblwip.a freertos/libfreertos.a ${BOOTLOADER_BINS} partitions_singleapp.bin
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+
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+ print_status "Bootloader source file rebuilds bootloader"
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+ take_build_snapshot
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+ touch ${IDF_PATH}/components/bootloader/src/main/bootloader_start.c
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+ make bootloader || failure "Failed to partial build bootloader"
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+ assert_rebuilt ${BOOTLOADER_BINS} bootloader/main/bootloader_start.o
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+ assert_not_rebuilt ${APP_BINS} partitions_singleapp.bin
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+
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+ print_status "Partition CSV file rebuilds partitions"
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+ take_build_snapshot
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+ touch ${IDF_PATH}/components/partition_table/partitions_singleapp.csv
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+ make partition_table
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+ assert_rebuilt partitions_singleapp.bin
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+ assert_not_rebuilt app-template.bin app-template.elf ${BOOTLOADER_BINS}
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+
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+ print_status "Partial build doesn't compile anything by default"
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+ take_build_snapshot
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+ # verify no build files are refreshed by a partial make
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+ ALL_BUILD_FILES=$(find ${BUILD} -type f | sed "s@${BUILD}/@@")
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+ make
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+ assert_not_rebuilt ${ALL_BUILD_FILES}
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+
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+ print_status "Cleaning should remove all files from build"
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+ make clean
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+ ALL_BUILD_FILES=$(find ${BUILD} -type f)
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+ if [ -n "${ALL_BUILD_FILES}" ]; then
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+ failure "Files weren't cleaned: ${ALL_BUILD_FILES}"
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+ fi
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+
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+ print_status "All tests completed"
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+ if [ -n "${FAILURES}" ]; then
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+ echo "Some failures were detected:"
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+ echo -e "${FAILURES}"
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+ exit 1
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+ else
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+ echo "Build tests passed."
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+ fi
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+}
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+
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+function print_status()
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+{
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+ echo "******** $1"
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+ STATUS="$1"
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+}
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+
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+function failure()
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+{
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+ echo "!!!!!!!!!!!!!!!!!!!"
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+ echo "FAILURE: $1"
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+ echo "!!!!!!!!!!!!!!!!!!!"
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+ FAILURES="${FAILURES}${STATUS} :: $1\n"
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+}
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+
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+TESTDIR=${TMP}/build_system_tests_$$
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+mkdir -p ${TESTDIR}
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+# set NOCLEANUP=1 if you want to keep the test directory around
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+# for post-mortem debugging
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+[ -z ${NOCLEANUP} ] && trap "rm -rf ${TESTDIR}" EXIT KILL
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+
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+SNAPSHOT=${TESTDIR}/snapshot
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+BUILD=${TESTDIR}/template/build
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+
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+
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+# copy all the build output to a snapshot directory
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+function take_build_snapshot()
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+{
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+ rm -rf ${SNAPSHOT}
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+ cp -ap ${TESTDIR}/template/build ${SNAPSHOT}
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+}
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+
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+# verify that all the arguments are present in the build output directory
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+function assert_built()
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+{
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+ until [ -z "$1" ]; do
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+ if [ ! -f "${BUILD}/$1" ]; then
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+ failure "File $1 should be in the build output directory"
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+ fi
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+ shift
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+ done
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+}
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+
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+# verify all the arguments passed in were rebuilt relative to the snapshot
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+function assert_rebuilt()
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+{
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+ until [ -z "$1" ]; do
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+ assert_built "$1"
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+ if [ ! -f "${SNAPSHOT}/$1" ]; then
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+ failure "File $1 should have been original build snapshot"
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+ fi
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+ if [ ! "${SNAPSHOT}/$1" -ot "${BUILD}/$1" ]; then
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+ failure "File $1 should have been rebuilt"
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+ fi
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+ shift
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+ done
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+}
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+
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+# verify all the arguments are in the build directory & snapshot,
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+# but were not rebuilt
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+function assert_not_rebuilt()
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+{
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+ until [ -z "$1" ]; do
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+ assert_built "$1"
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+ if [ ! -f "${SNAPSHOT}/$1" ]; then
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+ failure "File $1 should be in snapshot build directory"
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+ fi
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+ if [ "${SNAPSHOT}/$1" -ot "${BUILD}/$1" ]; then
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+ failure "File $1 should not have been rebuilt"
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+ fi
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+ shift
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+ done
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+}
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+
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+cd ${TESTDIR}
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+run_tests
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Ivan Grokhotkov