Add googletest.test.mk and integrate into bsd.test.mk

googletest.test.mk is a rudimentary wrapper around the plain test interface
(for now), which only supports C++ programs, specified by the `GTESTS`
variable.

In the future, kyua will support gtests in a more native manner.

share/mk/Makefile

@@ -73,6 +73,7 @@ FILESDIR=	${BINDIR}/mk
 
 .if ${MK_TESTS} != "no"
 FILES+=	atf.test.mk
+FILES+=	googletest.test.mk
 FILES+=	plain.test.mk
 FILES+=	suite.test.mk
 FILES+=	tap.test.mk

share/mk/bsd.test.mk

@@ -63,6 +63,7 @@ _TESTS=
 
 # Pull in the definitions of all supported test interfaces.
 .include <atf.test.mk>
+.include <googletest.test.mk>
 .include <plain.test.mk>
 .include <tap.test.mk>
 

share/mk/googletest.test.mk

@@ -0,0 +1,38 @@
+# $FreeBSD$
+#
+# You must include bsd.test.mk instead of this file from your Makefile.
+#
+# Logic to build and install GoogleTest based test programs.
+#
+# GoogleTest is a C++ test framework, thus, it does not describe/articulate how
+# to write tests in other languages, e.g., C or shell, unlike the ATF, plain,
+# and TAP raw test interfaces.
+#
+# For now this is a thin wrapper around the `plain` test interface, but in the
+# future this will rely on a newer version of kyua which will integrate in
+# GoogleTest support.
+
+.if !target(__<bsd.test.mk>__)
+.error googletest.test.mk cannot be included directly.
+.endif
+
+# List of GoogleTest test programs to build.
+#
+# Programs listed here are built according to the semantics of bsd.progs.mk for
+# PROGS_CXX.
+#
+# Test programs registered in this manner are set to be installed into TESTSDIR
+# (which should be overridden by the Makefile) and are not required to provide a
+# manpage.
+GTESTS?=
+
+.if !empty(GTESTS)
+PROGS_CXX+= ${GTESTS}
+_TESTS+= ${GTESTS}
+.for _T in ${GTESTS}
+BINDIR.${_T}= ${TESTSDIR}
+MAN.${_T}?= # empty
+SRCS.${_T}?= ${_T}.cc
+TEST_INTERFACE.${_T}= plain
+.endfor
+.endif