Add add-tracefile test

gcovr/tests/add_coverages/Makefile

@@ -0,0 +1,40 @@
+CFLAGS= -fprofile-arcs -ftest-coverage -fPIC
+
+all:
+	$(CXX) $(CFLAGS) -c foo.cpp -o foo.o
+	$(CXX) $(CFLAGS) -c bar.cpp -o bar.o
+	$(CXX) $(CFLAGS) -DFOO -c main.cpp -o main_foo.o
+	$(CXX) $(CFLAGS) main_foo.o foo.o -o testcase_foo
+	$(CXX) $(CFLAGS) -DBAR -c main.cpp -o main_bar.o
+	$(CXX) $(CFLAGS) main_bar.o bar.o -o testcase_bar
+
+run: txt xml html sonarqube json
+
+json_foo:
+	./testcase_foo
+	$(GCOVR) -d --json-pretty -o coverage_foo.json
+
+json_bar:
+	./testcase_bar
+	$(GCOVR) -d --json -o coverage_bar.json
+
+txt: json_foo json_bar
+	$(GCOVR) -a coverage_foo.json -a coverage_bar.json -o coverage.txt
+
+xml: json_foo json_bar
+	$(GCOVR) -a coverage_foo.json -a coverage_bar.json -x -o coverage.xml
+
+html: json_foo json_bar
+	$(GCOVR) -a coverage_foo.json -a coverage_bar.json --html-details -o coverage.html
+
+sonarqube: json_foo json_bar
+	$(GCOVR) -a coverage_foo.json -a coverage_bar.json --sonarqube sonarqube.xml
+
+json: json_foo json_bar
+	$(GCOVR) -a coverage_foo.json -a coverage_bar.json --json-pretty -o coverage.json
+
+clean:
+	rm -f testcase_*
+	rm -f *.gc*
+	rm -f *.o
+	rm -f coverage.txt coverage.xml coverage*.html sonarqube.xml coverage*.json

gcovr/tests/add_coverages/README

@@ -0,0 +1 @@
+A simple test that verifies adding coverages.

gcovr/tests/add_coverages/bar.cpp

@@ -0,0 +1,7 @@
+int bar()
+{
+int x=2;
+int y=2;
+return x-y;
+}
+

gcovr/tests/add_coverages/foo.cpp

@@ -0,0 +1,6 @@
+int foo()
+{
+int x=2;
+int y=2;
+return x+y;
+}

gcovr/tests/add_coverages/main.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+#ifdef FOO
+  extern int foo();
+#endif
+#ifdef BAR
+  extern int bar();
+#endif
+
+int main(int argc, char* argv[]) {
+#ifdef FOO
+  foo();
+#endif
+#ifdef BAR
+  bar();
+#endif
+
+  return 0;
+}