From 7b82e4b4c875973b6d66f8b9d96b89c4e7935b53 Mon Sep 17 00:00:00 2001
From: Niels Lohmann <mail@nlohmann.me>
Date: Thu, 5 Oct 2017 00:17:09 +0200
Subject: [PATCH] :hammer: added Makefile target to calculate lcov coverage

---
 Makefile | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Makefile b/Makefile
index 4458362a..ad54be10 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,7 @@ all:
 	@echo "check - compile and execute test suite"
 	@echo "check-fast - compile and execute test suite (skip long-running tests)"
 	@echo "clean - remove built files"
+	@echo "coverage - create coverage information with lcov"
 	@echo "cppcheck - analyze code with cppcheck"
 	@echo "doctest - compile example files and check their output"
 	@echo "fuzz_testing - prepare fuzz testing of the JSON parser"
@@ -35,11 +36,25 @@ check-fast:
 clean:
 	rm -fr json_unit json_benchmarks fuzz fuzz-testing *.dSYM test/*.dSYM
 	rm -fr benchmarks/files/numbers/*.json
+	rm -fr build_coverage
 	$(MAKE) clean -Cdoc
 	$(MAKE) clean -Ctest
 	$(MAKE) clean -Cbenchmarks
 
 
+##########################################################################
+# coverage
+##########################################################################
+
+coverage:
+	mkdir build_coverage
+	cd build_coverage ; CXX=g++-5 cmake .. -GNinja -DJSON_Coverage=ON
+	cd build_coverage ; ninja
+	cd build_coverage ; ctest
+	cd build_coverage ; ninja lcov_html
+	open build_coverage/test/html/index.html
+
+
 ##########################################################################
 # documentation tests
 ##########################################################################