science/hdf5: Convert to USES= cmake:testing

Only build unit test(s) when requested

Approved by:	portmgr (blanket, enhancement)

science/hdf5/Makefile

@@ -14,13 +14,14 @@ WWW=		https://www.hdfgroup.org/ \
 LICENSE=	BSD4CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		cmake compiler:c11 localbase perl5
+USES=		cmake:testing compiler:c11 localbase perl5
 USE_PERL5=	build
 
 CFLAGS+=	-D__LONG_LONG_SUPPORTED
 CMAKE_ARGS=	-DDEFAULT_API_VERSION=v112 \
 		-DHDF5_INSTALL_CMAKE_DIR=lib/cmake/hdf5 \
 		-DHDF5_INSTALL_INCLUDE_DIR=${PREFIX}/include
+CMAKE_OFF=	BUILD_TESTING
 CMAKE_ON=	HDF5_BUILD_HL_LIB HDF5_BUILD_TOOLS HDF5_ENABLE_INSTRUMENT HDF5_ENABLE_Z_LIB_SUPPORT HDF5_STRICT_FORMAT_CHECKS
 TEST_TARGET=	test
 USE_LDCONFIG=	yes