[connman] Allow to compile unit tests with coverage enabled

... and added unit/coverage script which runs the tests and
generates html report.

Code coverage has to be enabled with --enable-test-coverage
configure switch

connman/.gitignore

@@ -65,6 +65,11 @@ unit/test-nat
 unit/test-dnsproxy
 unit/test-sailfish_wakeup_timer
 
+*.gcda
+*.gcno
+unit/html
+unit/*.gcov
+
 doc/*.bak
 doc/*.stamp
 doc/connman.*

connman/Makefile.am

@@ -263,11 +263,17 @@ endif
 noinst_PROGRAMS += unit/test-ippool \
 			unit/test-sailfish_wakeup_timer unit/test-dnsproxy
 
+if TEST_COVERAGE
+COVERAGE_OPT = --coverage
+endif
+
 unit_test_ippool_SOURCES = src/log.c src/dbus.c src/error.c \
 					src/ippool.c unit/test-ippool.c
+unit_test_ippool_CFLAGS = $(COVERAGE_OPT) $(AM_CFLAGS)
 unit_test_ippool_LDADD = gdbus/libgdbus-internal.la \
 				@GLIB_LIBS@ @DBUS_LIBS@ -ldl
 
+unit_test_sailfish_wakeup_timer_CFLAGS = $(COVERAGE_OPT) $(AM_CFLAGS)
 unit_test_sailfish_wakeup_timer_SOURCES = unit/test-sailfish_wakeup_timer.c \
 				src/log.c src/wakeup_timer.c \
 				plugins/sailfish_wakeup_timer.c

connman/configure.ac

@@ -417,6 +417,11 @@ if (test "${need_glibutil}" = "yes"); then
 	LIBS="$LIBS $GLIBUTIL_LIBS"
 fi
 
+AC_ARG_ENABLE(test-coverage,
+	AC_HELP_STRING([--enable-test-coverage], [enable test code coverage]),
+		[enable_test_coverage=${enableval}], [enable_test_coverage="no"])
+AM_CONDITIONAL(TEST_COVERAGE, test "${enable_test_coverage}" != "no")
+
 AC_ARG_ENABLE(tools, AC_HELP_STRING([--disable-tools],
 				[disable testing tools]),
 					[enable_tools=${enableval}])

connman/unit/coverage

@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+# Script to generate unit test coverage report, requires lcov:
+#
+# http://ltp.sourceforge.net/coverage/lcov.php
+#
+
+# Tests with coverage enabled:
+TESTS="test-ippool test-sailfish_wakeup_timer"
+
+pushd `dirname $0` > /dev/null
+TEST_DIR="$PWD"
+pushd .. > /dev/null
+BASE_DIR="$PWD"
+popd > /dev/null
+popd > /dev/null
+
+FULL_COV="$TEST_DIR/full.gcov"
+PLUGINS_COV="$TEST_DIR/plugins.gcov"
+SRC_COV="$TEST_DIR/src.gcov"
+OUT="$TEST_DIR/html"
+
+# Clean everything up
+find "$BASE_DIR" -name "*.gcda" -exec rm {} \;
+rm -f "$FULL_COV" "$PLUGINS_COV" "$SRC_COV"
+rm -fr "$OUT"
+
+# Run the tests
+for t in $TESTS ; do
+    pushd "$TEST_DIR" > /dev/null
+    "$TEST_DIR/$t"
+    RC=$?
+    popd > /dev/null
+    [ $RC = 0 ] || exit 1
+done
+
+# LCOV 1.10 has branch coverage disabled per default
+LCOV_OPT="--rc lcov_branch_coverage=1"
+GENHTML_OPT="--branch-coverage"
+
+lcov $LCOV_OPT -c -d "$BASE_DIR" -o "$FULL_COV" || exit 1
+lcov $LCOV_OPT -e "$FULL_COV" "$BASE_DIR/plugins/*" -o "$PLUGINS_COV" || exit 1
+lcov $LCOV_OPT -e "$FULL_COV" "$BASE_DIR/src/*" -o "$SRC_COV" || exit 1
+genhtml $GENHTML_OPT -t connman "$PLUGINS_COV" "$SRC_COV" --output-directory "$OUT" || exit 1
+
+echo Coverage report: $OUT/index.html