tests: Support targeting unit_testing with and without qualifier

For tests that support both targeting unit_testing and
other targets, we check in the cmake code the BOARD variable.
Let's allow users to set this to either of unit_testing
or unit_testing/unit_testing so it behaves like for other
tests.

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>

tests/subsys/testsuite/fff_fake_contexts/CMakeLists.txt

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 cmake_minimum_required(VERSION 3.20.0)
-if(BOARD STREQUAL unit_testing/unit_testing)
+if(BOARD STREQUAL "unit_testing" OR BOARD STREQUAL "unit_testing/unit_testing")
   find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
   set(target testbinary)
 else()

tests/ztest/base/CMakeLists.txt

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 cmake_minimum_required(VERSION 3.20.0)
-if(BOARD STREQUAL unit_testing/unit_testing)
+if(BOARD STREQUAL "unit_testing" OR BOARD STREQUAL "unit_testing/unit_testing")
   find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
   project(base)
 

tests/ztest/fail/CMakeLists.txt

@@ -4,7 +4,7 @@
 cmake_minimum_required(VERSION 3.20.0)
 include(ExternalProject)
 
-if(BOARD STREQUAL unit_testing/unit_testing)
+if(BOARD STREQUAL "unit_testing" OR BOARD STREQUAL "unit_testing/unit_testing")
   find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
   set(target testbinary)
   # Set the target binary for the 'core' external project. The path to this must match the one set

tests/ztest/fail/core/CMakeLists.txt

@@ -23,7 +23,7 @@ elseif(CONFIG_ZTEST_FAIL_TEST_UNEXPECTED_ASSUME)
   list(APPEND test_sources src/unexpected_assume.cpp)
 endif()
 
-if(BOARD STREQUAL unit_testing/unit_testing)
+if(BOARD STREQUAL "unit_testing" OR BOARD STREQUAL "unit_testing/unit_testing")
   find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
   project(base)
 

tests/ztest/zexpect/CMakeLists.txt

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 cmake_minimum_required(VERSION 3.20.0)
-if(BOARD STREQUAL unit_testing/unit_testing)
+if(BOARD STREQUAL "unit_testing" OR BOARD STREQUAL "unit_testing/unit_testing")
   find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
   project(base)