Add PWM c++ tests

Author: cocasema

Makefile

@@ -40,6 +40,12 @@ install3: build3
 # sudo apt-get install automake
 # make cpp
 # cd build && sudo make install
+#
+# libgtest-dev is needed for UT
+#
+# sudo sh -c 'echo cape-universaln > /sys/devices/platform/bone_capemgr/slots'
+# sudo sh -c 'echo pwm > /sys/devices/platform/ocp/ocp\:P9_16_pinmux/state'
+# sudo sh -c 'echo pwm > /sys/devices/platform/ocp/ocp\:P8_19_pinmux/state'
 ################################################################################
 configure: configure.ac
 	rm -f configure && \
@@ -51,6 +57,10 @@ build/Makefile: configure
 	../configure
 
 cpp: build/Makefile
+	cd build && \
+	$(MAKE) build
+
+cpp-check: cpp
 	cd build && \
 	$(MAKE) check
 

configure.ac

@@ -9,12 +9,17 @@ AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_FILES([Makefile source/Makefile])
 
-AM_INIT_AUTOMAKE([1.9 dist-bzip2 dist-zip foreign subdir-objects])
+AM_INIT_AUTOMAKE([1.9 dist-bzip2 dist-zip foreign subdir-objects -Wall])
+AM_PROG_AR
+
+LT_INIT
 
 AC_PROG_CC
 AC_PROG_CXX
 AC_LANG([C])
 AC_LANG([C++])
-AC_PROG_LIBTOOL
+
+CHECK_GTEST
+CHECK_KERNEL_RELEASE
 
 AC_OUTPUT

m4/gtest.m4

@@ -0,0 +1,16 @@
+AC_DEFUN([CHECK_GTEST],
+[
+  AC_MSG_CHECKING([for google test])
+
+  AC_LANG_PUSH([C++])
+  AC_CHECK_HEADER([gtest/gtest.h],[gtest_found=yes])
+  AC_LANG_POP
+
+  #if test "x$gtest_found" = "xyes"; then
+  #  GTEST_CPPFLAGS=
+  #  AC_SUBST(GTEST_CPPFLAGS)
+  #fi
+
+  AC_SUBST(HAVE_GTEST)
+  AM_CONDITIONAL([HAVE_GTEST], [test "x$gtest_found" = "xyes"])
+])

m4/kernel-release.m4

@@ -0,0 +1,14 @@
+AC_DEFUN([CHECK_KERNEL_RELEASE],
+[
+  AC_MSG_CHECKING([if kernel release >= 4.1])
+
+  kernel_ge_41=$(python -c 'import platform; print("yes" if platform.release() >= "4.1.0" else "no")')
+
+  if test "x$kernel_ge_41" = "xyes"; then
+    CPPFLAGS="$CPPFLAGS -DBBBVERSION41"
+    AC_SUBST(CPPFLAGS)
+    AC_MSG_RESULT(yes)
+  else
+    AC_MSG_RESULT(no)
+  fi
+])

source/Makefile.am

@@ -101,3 +101,28 @@ test_cpp_abi_new_SOURCES  = test/cpp/abi.cpp
 test_cpp_abi_new_CXXFLAGS = $(AM_CXXFLAGS) -pthread -D_GLIBCXX_USE_CXX11_ABI=1
 test_cpp_abi_new_LDADD    = libadafruit-bbio1.la
 test_cpp_abi_new_LDFLAGS  = $(AM_LDFLAGS) -lpthread -static
+
+if HAVE_GTEST
+
+check_PROGRAMS += test/cpp/unittest
+
+gtest/src/gtest-all.cc: /usr/src/gtest/src
+	mkdir -p gtest && cp -Rvf $< gtest
+
+gtest/src/gtest_main.cc: gtest/src/gtest-all.cc
+
+BUILT_SOURCES = \
+	gtest/src/gtest-all.cc \
+	gtest/src/gtest_main.cc
+
+test_cpp_unittest_SOURCES = \
+	test/cpp/pwm.cpp \
+	gtest/src/gtest-all.cc \
+	gtest/src/gtest_main.cc
+
+test_cpp_unittest_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_CPPFLAGS) -isystem gtest
+test_cpp_unittest_CXXFLAGS = $(AM_CXXFLAGS) -pthread -D_GLIBCXX_USE_CXX11_ABI=1
+test_cpp_unittest_LDADD    = libadafruit-bbio1.la
+test_cpp_unittest_LDFLAGS  = $(AM_LDFLAGS) -lpthread -static
+
+endif # HAVE_GTEST