Mk/Uses/python.mk: Add support for optional 'test' argument

Some ports may need to use Python for their testing suite but otherwise
do not need it at all (ie, not for build or run). This patch adds
support for the test argument to be used in the USES clause, such as
python:3.2+,test. This enables the relevant Python environment and
modifies TEST_DEPENDS as necessary.

For non-Python ports that use Python as their testing suite, add
python:<ver>,test as required to the USES clause.

PR:			205616
Submitted by:		Brendan Molloy <brendan+freebsd bbqsrc net>
Reviewed by:		mat, miwi, koobs, antoine
Approved by:		koobs (python)
Differential Revision:	https://reviews.freebsd.org/D4711

1 files changed, 22 insertions, 7 deletions

diff --git a/Mk/Uses/python.mk b/Mk/Uses/python.mk
index a5ebce00c0f9..d47978f053a6 100644
--- a/Mk/Uses/python.mk
+++ b/Mk/Uses/python.mk
@@ -6,7 +6,7 @@
 #
 # Feature:	python
 # Usage:	USES=python or USES=python:args
-# Valid ARGS:	<version>, build, run
+# Valid ARGS:	<version>, build, run, test
 #
 # version 	If your port requires only some set of Python versions, you
 # 		can set this to [min]-[max] or min+ or -max or as an
@@ -23,12 +23,15 @@
 #						# version
 #
 # build		Indicates that Python is needed at build time and adds
-#		it as BUILD_DEPENDS.
+#		it to BUILD_DEPENDS.
 # run		Indicates that Python is needed at run time and adds
-#		it as RUN_DEPENDS.
+#		it to RUN_DEPENDS.
+# test		Indicates that Python is needed at test time and adds
+# 		it to TEST_DEPENDS.
 #
-# If build and run are omitted, Python will be added as BUILD_DEPENDS and
-# RUN_DEPENDS. PYTHON_NO_DEPENDS can be set to not add any dependencies.
+# If build, run and test are omitted, Python will be added as BUILD_DEPENDS,
+# RUN_DEPENDS and TEST_DEPENDS. PYTHON_NO_DEPENDS can be set to not add any
+# dependencies.
 #
 # Variables, which can be set by a user:
 #
@@ -231,6 +234,7 @@ _PYTHON_FEATURE_${var:tu}=	yes
 # pollutes the build/run dependency detection
 .undef _PYTHON_BUILD_DEP
 .undef _PYTHON_RUN_DEP
+.undef _PYTHON_TEST_DEP
 _PYTHON_ARGS=		${python_ARGS:S/,/ /g}
 .if ${_PYTHON_ARGS:Mbuild}
 _PYTHON_BUILD_DEP=	yes
@@ -240,13 +244,18 @@ _PYTHON_ARGS:=		${_PYTHON_ARGS:Nbuild}
 _PYTHON_RUN_DEP=	yes
 _PYTHON_ARGS:=		${_PYTHON_ARGS:Nrun}
 .endif
+.if ${_PYTHON_ARGS:Mtest}
+_PYTHON_TEST_DEP=	yes
+_PYTHON_ARGS:=		${_PYTHON_ARGS:Ntest}
+.endif
 
-# The port does not specify a build or run dependency, assume both are
+# The port does not specify a build, run or test dependency, assume all are
 # required.
 .if !defined(_PYTHON_BUILD_DEP) && !defined(_PYTHON_RUN_DEP) && \
-    !defined(PYTHON_NO_DEPENDS)
+    !defined(_PYTHON_TEST_DEP) && !defined(PYTHON_NO_DEPENDS)
 _PYTHON_BUILD_DEP=	yes
 _PYTHON_RUN_DEP=	yes
+_PYTHON_TEST_DEP=	yes
 .endif
 
 # Determine version number of Python to use
@@ -561,6 +570,12 @@ RUN_DEPENDS+=	${PYTHON_CMD}:${PYTHON_PORTSDIR}
 RUN_DEPENDS+=	python${_WANTS_META_PORT}:${_PYTHON_RELPORTDIR}${_WANTS_META_PORT}
 .endif
 .endif
+.if defined(_PYTHON_TEST_DEP)
+TEST_DEPENDS+=	${PYTHON_CMD}:${PYTHON_PORTSDIR}
+.if defined(_WANTS_META_PORT)
+TEST_DEPENDS+=	python${_WANTS_META_PORT}:${_PYTHON_RELPORTDIR}${_WANTS_META_PORT}
+.endif
+.endif
 
 # set $PREFIX as Python's one
 .if defined(_PYTHON_FEATURE_PYTHONPREFIX)