Add dummy analogin test

Author: hazzlim

drivers/tests/UNITTESTS/AnalogIn/CMakeLists.txt

@@ -0,0 +1,19 @@
+# Copyright (c) 2021 ARM Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+set(TEST_NAME analogin-unittest)
+
+add_executable(${TEST_NAME})
+
+target_sources(${TEST_NAME}
+    PRIVATE
+        ${mbed-os_SOURCE_DIR}/drivers/source/AnalogIn.cpp
+        test_analogin.cpp
+)
+
+target_link_libraries(${TEST_NAME}
+    PRIVATE
+        mbed-headers-drivers
+        mbed-headers-platform
+)
+

drivers/tests/UNITTESTS/AnalogIn/test_analogin.cpp

@@ -0,0 +1,19 @@
+/* Copyright (c) 2021 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+int main() {
+    return 0;
+}

drivers/tests/UNITTESTS/CMakeLists.txt

@@ -1,5 +1,6 @@
 # Copyright (c) 2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 add_subdirectory(doubles)
+add_subdirectory(AnalogIn)
 add_subdirectory(PwmOut)
 add_subdirectory(Watchdog)