json-c++: run all tests that don't require a git checkout

srcpkgs/json-c++/template

@@ -12,9 +12,12 @@ license="MIT"
 homepage="https://github.com/nlohmann/json"
 distfiles="https://github.com/nlohmann/json/archive/v${version}.tar.gz"
 checksum=5daca6ca216495edf89d167f808d1d03c4a4d929cef7da5e10f135ae1540c7e4
-# tests only work in git repository
-make_check=no
 
+do_check() {
+	# skip tests requiring wrksrc to be a git clone as they always fail
+	cd build
+	ctest -LE "git_required"
+}
 
 post_install() {
 	vdoc README.md