Replace nl-unit-test with pigweed for protocols/secure_channel (#33499)

* secure channel tests to pigweed

* Remove nlunit tests dependency

* Update conversion to pigweed

* Relocate class

* Revert old implementation

* Restore

* Move definition of TEST_F_FROM_FIXTURE to UnitTest

* Fix test error

* Add missing deps

* Revert order change

* Restyle

* Revert

* Add missing header

* Add UnitTestPigweedUtils

* IoT SDK update tests list

* Remove unused define

* Change target type

* license

* Assert

* rollback

* cleanup

* Change function to method

* Restyle

* Fix dependency between tests

* Fix merge

* Fix

* Review fix

* Fix typo

* Fix review issues

* Fix review issues

Author: jlatusek

src/BUILD.gn

@@ -101,7 +101,6 @@ if (chip_build_tests) {
         "${chip_root}/src/lib/format/tests",
         "${chip_root}/src/lib/support/tests",
         "${chip_root}/src/protocols/secure_channel/tests",
-        "${chip_root}/src/protocols/secure_channel/tests:tests_nltest",
         "${chip_root}/src/system/tests",
         "${chip_root}/src/transport/tests",
       ]

src/lib/support/tests/BUILD.gn

@@ -19,6 +19,15 @@ import("//build_overrides/pigweed.gni")
 
 import("${chip_root}/build/chip/chip_test_suite.gni")
 
+pw_source_set("pw-test-macros") {
+  output_dir = "${root_out_dir}/lib"
+  public_deps = [
+    "$dir_pw_log:impl",
+    "$dir_pw_unit_test",
+  ]
+  sources = [ "ExtraPwTestMacros.h" ]
+}
+
 chip_test_suite("tests") {
   output_name = "libSupportTests"
 

src/lib/support/tests/ExtraPwTestMacros.h

@@ -0,0 +1,56 @@
+/*
+ *
+ *    Copyright (c) 2024 Project CHIP Authors
+ *    All rights reserved.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+#pragma once
+
+/*
+ * Run Fixture's class function as a test.
+ * It is used to execute test cases that need to use private members of a particular class.
+ * Unlike the pigweed macro `FRIEND_TEST`, this approach allows you to define the entire
+ * test_fixture class as a friend, rather than having to define each testcase as a friend.
+ *
+ * @param test_fixture - the fixture class.
+ *
+ * @param test_name - the name of the test function.
+ *
+ * Example:
+ * class Foo // class to be tested
+ * {
+ *     friend class TestCtx;
+ * private:
+ *     bool privateFunction();
+ * };
+ *
+ * class TestCtx: public ::testing::Test
+ * {
+ * public:
+ *    void testFunction();
+ * };
+ *
+ * TEST_F_FROM_FIXTURE(TestCtx, testFunction)
+ * {
+ *   Foo foo;
+ *   EXPECT_TRUE(foo.privateFunction());
+ * }
+ *
+ */
+#define TEST_F_FROM_FIXTURE(test_fixture, test_name)                                                                               \
+    TEST_F(test_fixture, test_name)                                                                                                \
+    {                                                                                                                              \
+        test_name();                                                                                                               \
+    }                                                                                                                              \
+    void test_fixture::test_name()

src/protocols/secure_channel/tests/BUILD.gn

@@ -1,39 +1,15 @@
 import("//build_overrides/build.gni")
 import("//build_overrides/chip.gni")
-import("//build_overrides/nlunit_test.gni")
 import("${chip_root}/build/chip/chip_test_suite.gni")
 import("${chip_root}/src/app/icd/icd.gni")
 
 chip_test_suite("tests") {
   output_name = "libSecureChannelTests"
 
   test_sources = [
+    "TestCASESession.cpp",
     "TestCheckInCounter.cpp",
     "TestCheckinMsg.cpp",
-  ]
-
-  sources = [ "CheckIn_Message_test_vectors.h" ]
-
-  cflags = [ "-Wconversion" ]
-  public_deps = [
-    "${chip_root}/src/app/icd/server:icd-server-config",
-    "${chip_root}/src/credentials/tests:cert_test_vectors",
-    "${chip_root}/src/lib/core",
-    "${chip_root}/src/lib/support",
-    "${chip_root}/src/lib/support:test_utils",
-    "${chip_root}/src/lib/support:testing",
-    "${chip_root}/src/protocols/secure_channel",
-    "${chip_root}/src/protocols/secure_channel:check-in-counter",
-    "${dir_pw_unit_test}",
-  ]
-}
-
-chip_test_suite_using_nltest("tests_nltest") {
-  # Renamed ouput during the transition away from nltest
-  output_name = "libSecureChannelTestsNL"
-
-  test_sources = [
-    "TestCASESession.cpp",
     "TestDefaultSessionResumptionStorage.cpp",
     "TestPASESession.cpp",
     "TestPairingSession.cpp",
@@ -44,22 +20,26 @@ chip_test_suite_using_nltest("tests_nltest") {
     #    "TestMessageCounterManager.cpp",
   ]
 
+  sources = [ "CheckIn_Message_test_vectors.h" ]
+
+  cflags = [ "-Wconversion" ]
   public_deps = [
+    "${chip_root}/src/app/icd/server:icd-server-config",
+    "${chip_root}/src/credentials/tests:cert_test_vectors",
     "${chip_root}/src/crypto/tests:tests.lib",
     "${chip_root}/src/lib/core",
     "${chip_root}/src/lib/support",
     "${chip_root}/src/lib/support:test_utils",
     "${chip_root}/src/lib/support:testing",
-    "${chip_root}/src/lib/support:testing_nlunit",
+    "${chip_root}/src/lib/support/tests:pw-test-macros",
     "${chip_root}/src/messaging/tests:helpers",
     "${chip_root}/src/protocols",
     "${chip_root}/src/protocols/secure_channel",
+    "${chip_root}/src/protocols/secure_channel:check-in-counter",
     "${chip_root}/src/transport/raw/tests:helpers",
-    "${nlunit_test_root}:nlunit-test",
+    "${dir_pw_unit_test}",
   ]
 
-  cflags = [ "-Wconversion" ]
-
   if (chip_enable_icd_server) {
     public_deps += [ "${chip_root}/src/app/icd/server:configuration-data" ]
   }