Add testing & code coverage reporting

.github/workflows/build.yml

@@ -0,0 +1,48 @@
+name: NRPE Tests
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        path: nrpe
+
+    - name: configure
+      run: |
+        mkdir build
+        cd build
+        ../nrpe/configure
+    - name: build
+      run: |
+        cd build
+        make all
+
+    - name: configure [no ssl]
+      run: |
+        mkdir build_nossl
+        cd build_nossl
+        ../nrpe/configure --disable-ssl
+    - name: build [no ssl]
+      run: |
+        cd build_nossl
+        make all
+
+    - name: install test prerequisites
+      run: |
+        sudo apt-get -y install libio-socket-ssl-perl libdigest-crc-perl
+    - name: test
+      run: |
+        cd build
+        make test
+    - name: test [no ssl]
+      run: |
+        cd build_nossl
+        make test

.gitignore

@@ -41,3 +41,14 @@ startup/solaris-init.xml
 startup/tmpfile.conf
 startup/upstart-init
 
+# Visual Studio Code IDE
+.vscode
+
+# gcov coverage files
+*.gcno
+*.gcda
+nrpe.info-file
+coverage-report/
+
+tests/logs
+tests/run

Makefile.in

@@ -181,11 +181,15 @@ install-groups-users:
 
 clean:
 	cd $(SRC_BASE); $(MAKE) $@; cd ..
+	$(MAKE) -C tests $@
 	rm -f core
 	rm -f *~ */*~
+	rm -f nrpe.info-file
+	rm -rf coverage-report
 
 distclean: clean
 	cd $(SRC_BASE); $(MAKE) $@; cd ..
+	$(MAKE) -C tests $@
 	rm -rf autom4te.cache
 	rm -f config.log config.status config.cache sample-config/nrpe.cfg $(SRC_INCLUDE)/config.h
 	rm -f startup/bsd-init startup/debian-init startup/default-init startup/default-inetd
@@ -199,3 +203,21 @@ distclean: clean
 
 devclean: distclean
 
+test:
+	$(MAKE) -C $(SRC_BASE) nrpe check_nrpe
+	$(MAKE) -C tests test
+
+src/check_nrpe-check_nrpe.gcda:
+	$(MAKE) test
+
+src/nrpe-nrpe.gcda:
+	$(MAKE) test
+
+coverage: src/nrpe-nrpe.gcda src/check_nrpe-check_nrpe.gcda
+	@if ! which lcov >/dev/null 2>&1; then \
+		echo "ERROR: You must install lcov and genhtml first"; \
+	else \
+		lcov -c -d . -o nrpe.info-file; \
+		genhtml nrpe.info-file -o coverage-report; \
+		echo "Your coverage report is in coverage-report/index.html"; \
+	fi