feat(cmakev2/test): add simple test for component include

Add two project components, component1 and component2, and verify that
their real targets are created when they are included.

Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>

tools/cmakev2/test/CMakeLists.txt

@@ -180,6 +180,26 @@ function(test_project_properties)
     endif()
 endfunction()
 
+# Test that the targets for component1 and component2 are created when
+# component2 is included.
+function(test_include_component)
+    idf_build_library(INTERFACE idflibtest3 COMPONENTS component2)
+    idf_component_get_property(component_real_target
+                               component2
+                               COMPONENT_REAL_TARGET)
+    if(NOT TARGET ${component_real_target})
+        idf_die("Missing component2 target")
+    endif()
+
+    # Test that component1 is included as a dependency of component2.
+    idf_component_get_property(component_real_target
+                               component1
+                               COMPONENT_REAL_TARGET)
+    if(NOT TARGET ${component_real_target})
+        idf_die("Missing component1 target")
+    endif()
+endfunction()
+
 # Run tests
 test_component_priority()
 test_idf_version()
@@ -188,6 +208,7 @@ test_toolchain()
 test_idf_build_library()
 test_kconfig()
 test_project_properties()
+test_include_component()
 __dump_all_properties()
 
 message("ALL TESTS PASSED")

tools/cmakev2/test/components/component1/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_library(${COMPONENT_TARGET} component1.c)
+target_include_directories(${COMPONENT_TARGET} PUBLIC ${CMAKE_CURRENT_LIST_DIR})

tools/cmakev2/test/components/component1/component1.c

@@ -0,0 +1,11 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <stdio.h>
+
+void component1_func(void)
+{
+    printf("component1\n");
+}

tools/cmakev2/test/components/component1/component1.h

@@ -0,0 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef _COMPONENT1_H_
+#define _COMPONENT1_H_
+void component1_func(void);
+#endif

tools/cmakev2/test/components/component2/CMakeLists.txt

@@ -0,0 +1,5 @@
+idf_component_include(component1 INTERFACE component1)
+
+add_library(${COMPONENT_TARGET} component2.c)
+target_include_directories(${COMPONENT_TARGET} PUBLIC ${CMAKE_CURRENT_LIST_DIR})
+target_link_libraries(${COMPONENT_TARGET} PRIVATE ${component1})

tools/cmakev2/test/components/component2/component2.c

@@ -0,0 +1,13 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <stdio.h>
+#include "component1.h"
+
+void component2_func(void)
+{
+    component1_func();
+    printf("component2\n");
+}

tools/cmakev2/test/components/component2/component2.h

@@ -0,0 +1,10 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef _COMPONENT2_H_
+#define _COMPONENT2_H_
+
+void component2_func(void);
+#endif