test: settings: functional: fix missing test_main

The functional tests for settings subsystem regressed with the
introduction of the weak test_main function. This was caused by
Issue #19582 since the common code was being linked as a library.

Update the logic of the common code to directly add the sources
to the `app` target. This resolved both Issue #19582 and #42396

Signed-off-by: Yuval Peress <[email protected]>

Author: Yuval Peress

tests/subsys/settings/fcb/raw/CMakeLists.txt

@@ -5,10 +5,6 @@ find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 project(settings_fcb_raw)
 
 add_subdirectory(../src fcb_test_bindir)
-target_link_libraries(app PRIVATE settings_fcb_test)
-
-# The code is in the library common to several tests.
-target_sources(app PRIVATE placeholder.c)
 
 if(TEST)
 	target_compile_definitions(app PRIVATE

tests/subsys/settings/fcb/raw/placeholder.c

@@ -1,10 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # Copyright (c) 2019 Intel Corporation
 
-zephyr_library_named(settings_fcb_test)
-
 add_subdirectory(../../src settings_test_bindir)
-target_link_libraries(settings_fcb_test PRIVATE settings_test)
 
 zephyr_include_directories(
 	${ZEPHYR_BASE}/subsys/settings/include
@@ -13,4 +10,4 @@ zephyr_include_directories(
 	)
 
 FILE(GLOB mysources *.c)
-zephyr_library_sources(${mysources})
+target_sources(app PRIVATE ${mysources})

tests/subsys/settings/fcb/src/CMakeLists.txt

@@ -1,15 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 # Copyright (c) 2019 Nordic Semiconductor ASA
 
-zephyr_library_named(settings_test_fs)
-
-# zephyr_library() is here in "app-mode", see
-# https://github.com/zephyrproject-rtos/zephyr/issues/19582
-# Random build failures without this, depends on the number of threads.
-add_dependencies(settings_test_fs
-  zephyr_generated_headers
-  )
-
 FILE(GLOB fssources *.c )
-zephyr_library_sources(${fssources})
-zephyr_library_link_libraries(kernel)
+target_sources(app PRIVATE ${fssources})

tests/subsys/settings/fs/src/CMakeLists.txt

@@ -8,7 +8,6 @@ project(functional_fcb)
 target_sources(app PRIVATE placeholder.c)
 
 add_subdirectory(../src func_test_bindir)
-target_link_libraries(app PRIVATE settings_func_test)
 
 if(TEST)
 	target_compile_definitions(app PRIVATE

tests/subsys/settings/functional/fcb/CMakeLists.txt

@@ -8,7 +8,6 @@ project(functional_nvs)
 target_sources(app PRIVATE placeholder.c)
 
 add_subdirectory(../src func_test_bindir)
-target_link_libraries(app PRIVATE settings_func_test)
 
 if(TEST)
 	target_compile_definitions(app PRIVATE

tests/subsys/settings/functional/nvs/CMakeLists.txt

@@ -1,18 +1,8 @@
 # SPDX-License-Identifier: Apache-2.0
 
-zephyr_library_named(  settings_func_test)
-
 zephyr_include_directories(
 	${ZEPHYR_BASE}/subsys/settings/include
 	${ZEPHYR_BASE}/subsys/settings/src
 	)
 
-zephyr_library_sources(settings_basic_test.c)
-
-# zephyr_library() is here in "app-mode", see
-# https://github.com/zephyrproject-rtos/zephyr/issues/19582
-# Random build failures without this, depends on the number of threads.
-add_dependencies(
-  settings_func_test
-  zephyr_generated_headers
-  )
+target_sources(app PRIVATE settings_basic_test.c)

tests/subsys/settings/functional/src/CMakeLists.txt

@@ -6,10 +6,6 @@ find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 project(littlefs)
 
 add_subdirectory(../src littlefs_test_bindir)
-target_link_libraries(app PRIVATE settings_littlefs_test)
-
-# The code is in the library common to several tests.
-target_sources(app PRIVATE placeholder.c)
 
 if(TEST)
 	target_compile_definitions(app PRIVATE

tests/subsys/settings/littlefs/base64/CMakeLists.txt

@@ -7,11 +7,6 @@ project(littlefs_raw)
 
 add_subdirectory(../src littlefs_test_bindir)
 
-target_link_libraries(app PRIVATE settings_littlefs_test)
-
-# The code is in the library common to several tests.
-target_sources(app PRIVATE placeholder.c)
-
 if(TEST)
 	target_compile_definitions(app PRIVATE
 		-DTEST_${TEST}